Form 10-Q - Quarterly report [Sections 13 or 15(d)]

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549




			Form 10-Q

(Mark One)


x			QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended March 31, 2024


¨			TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from ______ to ______

Commission file number 001-41614




MINERALYS THERAPEUTICS, INC.

(Exact name of registrant as specified in its charter)


Delaware			84-1966887
(State or other jurisdiction of incorporation or organization)			(I.R.S. Employer Identification No.)

150 N. Radnor Chester Rd, Suite F200, Radnor, PA 19087
(Address, including zip code, of principal executive offices)

888-378-6240
(Registrant's telephone number, including area code)

(Former name, former address and former fiscal year, if changed since last report): NA

Securities registered pursuant to Section 12(b) of the Act:


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common stock, $0.0001 par value per share	MLYS	The Nasdaq Stock Market LLC

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports); and (2) has been subject to such filing requirements for the past 90 days. Yes x No o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). Yes x No o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer

Accelerated filer

Non-accelerated filer

Smaller reporting company

Emerging growth company

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). Yes o No x

As of May 1, 2024, there were 49,648,540 shares of the registrant’s common stock outstanding.

Mineralys Therapeutics, Inc.

Table of Contents


			Page
Part I - Financial Information			1
Item 1. Financial Statements			1
Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations			15
Item 3. Quantitative and Qualitative Disclosures About Market Risk			27
Item 4. Controls and Procedures			27
Part II - Other Information			29
Item 1. Legal Proceedings			29
Item 1A. Risk Factors			29
Item 2. Unregistered Sales of Equity Securities and Use of Proceeds			29
Item 3. Defaults Upon Senior Securities			29
Item 4. Mine Safety Disclosures			29
Item 5. Other Information			29
Item 6. Exhibits			29

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Part I - Financial Information

Item 1. Financial Statements

Mineralys Therapeutics, Inc.

Condensed Balance Sheets

(in thousands, except share and per share amounts)




	March 31,		December 31,
	2024		2023
	(unaudited)
Assets
Current assets:
Cash and cash equivalents	$	90,418	$	49,304
Investments	248,147		187,263
Prepaid and other current assets	8,254		12,536
Total current assets	346,819		249,103
Investments, noncurrent	—		2,482
Property and equipment, net	51		—
Other assets	379		51
Total assets	$	347,249	$	251,636

Liabilities and stockholders’ equity
Current liabilities:
Accounts payable	$	4,261	$	601
Accrued liabilities	14,943		9,881

Total current liabilities	19,204		10,482
Commitments and contingencies (Note 4)


Stockholders’ equity:
Common stock, $0.0001 par value; 500,000,000 shares authorized as of March 31, 2024 and December 31, 2023; 49,632,989 and 41,133,916 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	5		4
Additional paid-in capital	484,256		365,858
Accumulated deficit	(156,216)		(124,708)
Total stockholders’ equity	328,045		241,154
Total liabilities and stockholders’ equity	$	347,249	$	251,636

The accompanying notes are an integral part of these condensed financial statements.

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Mineralys Therapeutics, Inc.

Condensed Statements of Operations

(in thousands, except share and per share data)

(unaudited)


	Three Months Ended
	March 31,
		2024		2023
Operating expenses:
Research and development		$	30,754	$	12,293
General and administrative		4,608		2,645
Total operating expenses		35,362		14,938
Loss from operations		(35,362)		(14,938)

Interest income, net		3,853		2,329

Other income		1		1
Total other income, net		3,854		2,330
Net loss		$	(31,508)	$	(12,608)
Net loss per share attributable to common stockholders, basic and diluted		$	(0.70)	$	(0.51)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted		44,900,755		24,764,469

The accompanying notes are an integral part of these condensed financial statements.

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Mineralys Therapeutics, Inc.

Condensed Statements of Convertible Preferred Stock and Stockholders’ Equity (Deficit)

(in thousands, except share data)

(unaudited)


	Series A Convertible Preferred Stock			Series B Convertible Preferred Stock			Common Stock			Additional Paid-In-Capital		Accumulated Deficit		Total Stockholders’ Equity (Deficit)
	Shares	Amount		Shares	Amount		Shares	Amount
Balance as of December 31, 2022	86,332,216	$	40,987	136,510,868	$	117,657	6,419,238	$	1	$	540	$	(52,810)	$	(52,269)
Conversion of preferred stock to common stock upon closing of initial public offering	(86,332,216)	(40,987)		(136,510,868)	(117,657)		20,637,415	2		158,642		—		158,644
Issuance of common stock in initial public offering, net of issuance costs of $19,441	—	—		—	—		13,800,000	1		201,358		—		201,359

Stock-based compensation	—	—		—	—		—	—		749		—		749
Net loss	—	—		—	—		—	—		—		(12,608)		(12,608)
Balance as of March 31, 2023	—	$	—	—	$	—	40,856,653	$	4	$	361,289	$	(65,418)	$	295,875


	Series A Convertible Preferred Stock			Series B Convertible Preferred Stock			Common Stock			Additional Paid-In-Capital		Accumulated Deficit		Total Stockholders’ Equity
	Shares	Amount		Shares	Amount		Shares	Amount
Balance as of December 31, 2023	—	$	—	—	$	—	41,133,916	$	4	$	365,858	$	(124,708)	$	241,154
Issuance of common stock and pre-funded warrants in private placement financing, net of offering costs of $3,941	—	—		—	—		8,339,169	1		116,058		—		116,059

Issuance of common stock from stock option exercises	—	—		—	—		159,904	—		149		—		149

Stock-based compensation	—	—		—	—		—	—		2,191		—		2,191
Net loss	—	—		—	—		—	—		—		(31,508)		(31,508)
Balance as of March 31, 2024	—	$	—	—	$	—	49,632,989	$	5	$	484,256	$	(156,216)	$	328,045

The accompanying notes are an integral part of these condensed financial statements.

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Mineralys Therapeutics, Inc.

Condensed Statements of Cash Flows

(in thousands)

(unaudited)


	Three Months Ended
	March 31,
	2024		2023
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$	(31,508)	$	(12,608)
Adjustments to reconcile net loss to net cash used in operating activities:
Accretion of discount on held-to-maturity securities	(2,509)		(855)
Stock-based compensation	2,191		749
Depreciation and amortization	8		—


Changes in operating assets and liabilities:
Accrued interest receivable	119		(270)
Prepaid and other current assets	4,159		(1,703)
Accounts payable and accrued liabilities	8,401		1,912
Net cash used in operating activities	(19,139)		(12,775)

CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of marketable securities	(123,393)		(162,751)
Maturity of marketable securities	67,500		22,500
Purchases of property and equipment	(59)		—

Net cash used in investing activities	(55,952)		(140,251)

CASH FLOWS FROM FINANCING ACTIVITIES:

Proceeds from issuance of common stock and pre-funded warrants in a private placement offering, net of paid offering costs	116,119		—
Proceeds from stock option exercises	149		—
Offering costs paid	(63)		—


Proceeds from issuance of common stock in initial public offering, net of offering costs	—		203,571



Net cash provided by financing activities	116,205		203,571

Net increase in cash and cash equivalents	41,114		50,545
Cash, cash equivalents, and restricted cash - beginning	49,304		87,701
Cash and cash equivalents - ending(1)	$	90,418	$	138,246

Supplement Disclosure of Non-Cash Financing Activities:
Offering costs included in accounts payable and accrued liabilities	$	321	$	581
Conversion of convertible preferred stock to common stock upon closing of initial public offering	$	—	$	159,180

(1)Cash and cash equivalents as of March 31, 2024 exclude investments of $248.1 million. Cash, cash equivalents, and investments amounted to $338.6 million as of March 31, 2024.

The accompanying notes are an integral part of these condensed financial statements.

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

Note 1. Nature of Business

Mineralys Therapeutics, Inc. (the Company) is a clinical-stage biopharmaceutical company focused on developing medicines to target diseases driven by dysregulated aldosterone. The Company’s clinical-stage product candidate, lorundrostat, is a proprietary, orally administered, aldosterone synthase inhibitor that the Company is initially developing for the treatment of cardiorenal conditions affected by dysregulated aldosterone, including hypertension and chronic kidney disease. The Company has initiated a pivotal clinical program of lorundrostat for the treatment of uncontrolled or resistant hypertension and a Phase 2 trial for lorundrostat in hypertensive patients with Stage 2 to 3b chronic kidney disease. The Company was incorporated as a Delaware corporation in May 2019, and it is headquartered in Radnor, Pennsylvania.

The Company’s operations to date have been limited to business planning, raising capital, in-licensing lorundrostat, conducting preclinical and clinical trials, and other research and development.

Initial Public Offering

On February 14, 2023, the Company completed an initial public offering (IPO) of 13,800,000 shares of its common stock, which included the exercise in full by the underwriters of their option to purchase 1,800,000 additional shares, at a public offering price of $16.00 per share. The net proceeds to the Company from the IPO were $201.4 million, net of underwriting discounts, commissions, and offering costs.

Reverse Stock Split

On February 1, 2023, the Company effected a one-for-10.798 reverse stock split of its issued and outstanding shares of common stock, par value $0.0001 per share, and a proportional adjustment to the existing conversion ratio of the Company’s preferred stock (the Reverse Stock Split). Accordingly, all share and per-share amounts for all periods presented in the accompanying condensed financial statements and notes thereto have been adjusted to reflect this Reverse Stock Split.

Liquidity and Capital Resources

Since its inception, the Company has not generated any revenue from product sales or other sources and has incurred significant operating losses and negative cash flows from operations. The Company’s primary uses of cash to date have been to fund research and development activities, business planning, establishing and maintaining the Company’s intellectual property portfolio, hiring personnel, raising capital, and providing general and administrative support for these operations. As of March 31, 2024, the Company had an accumulated deficit of $156.2 million and cash, cash equivalents, and investments of $338.6 million. For the three months ended March 31, 2024, the Company had a net loss of $31.5 million and net cash used in operating activities of $19.1 million.

From inception to March 31, 2024, the Company has funded its operations by raising aggregate gross proceeds of approximately $498.8 million from the sale of the Company’s common stock, convertible preferred stock, convertible notes, and pre-funded warrants. The Company has a limited operating history, and the sales and income potential of its business is unproven. The Company expects to continue to incur substantial losses in the foreseeable future as a result of the Company’s research and development activities. Additional funding will be required in the future to continue with the Company’s planned research and development and other activities. The Company expects to finance its operations through equity offerings, debt financings, and other capital sources, including potential strategic collaborations, licensing, and other similar arrangements. The Company believes that its cash, cash equivalents, and investments as of March 31, 2024 will be sufficient to allow the Company to fund operations for at least twelve months from the issuance date of these condensed financial statements.

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

Note 2. Summary of Significant Accounting Policies

Basis of Presentation

The unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and applicable rules and regulations of the U.S. Securities and Exchange Commission (SEC) for interim reporting. As permitted under those rules and regulations, certain footnotes or other financial information normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These condensed financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair presentation of the Company’s financial information. These unaudited condensed financial statements should be read in conjunction with the audited financial statements and related notes in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023.

Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification (ASC) and Accounting Standards Updates of the Financial Accounting Standards Board (FASB).

Segment Information

The Company operates in one operating segment for the purposes of assessing performance and making operating decisions and, accordingly, no segment disclosures have been presented herein. All assets are held in the United States.

Use of Estimates

The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. Estimates have been used in the following areas, among others: research and development accruals, fair value of the Company’s common stock prior to the closing of the Company’s IPO, and income taxes.

Cash and Cash Equivalents

All highly liquid investments that have maturities of 90 days or less at the date of purchase are classified as cash equivalents. As of March 31, 2024 and December 31, 2023, the Company did not have any restricted cash balances. The Company’s cash and cash equivalents balances as of March 31, 2024 include cash balances and amounts held primarily in interest-bearing money market accounts. The following table provides a reconciliation of cash and cash equivalents as reported in the statement of cash flows to the balance sheets (in thousands):




	March 31,		December 31,
	2024		2023
Cash	$	5,376	$	643
Cash equivalents	85,042		48,661
Total cash and cash equivalents	$	90,418	$	49,304

Concentration of Credit Risk

The Company has no significant off-balance sheet concentrations of credit risk, such as foreign currency exchange contracts, option contracts, or other hedging arrangements. Financial instruments that

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

potentially subject the Company to concentrations of credit risk primarily consist of cash balances in several accounts with three financial institutions which, from time to time, are in excess of federally insured limits.

Fair Value Measurements

The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. ASC Topic 820, Fair Value Measurement, establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available.

Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below:

•Level 1 – quoted prices in active markets for identical assets and liabilities

•Level 2 – other significant observable inputs (including quoted prices for similar assets and liabilities, interest rates, credit risk, etc.)

•Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of assets and liabilities)

For certain financial instruments, including cash and cash equivalents, prepaid expenses, accounts payable, and certain accrued liabilities, the recorded amount approximates estimated fair value due to their relatively short maturity period. Refer to Note 3. “Fair Value of Financial Instruments” for additional details of the Company’s financial instruments.

Investments

The Company generally invests its excess cash in money market funds and investment-grade short- and long-term fixed-income debt securities, such as U.S. Treasury bills. Such investments are included in cash and cash equivalents, current investments, and investments - noncurrent in the condensed balance sheets.

The Company determines the appropriate classification of short-term and long-term securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are carried at amortized cost, adjusted for the accretion of discounts using the interest method.

The Company invested in marketable securities during the three months ended March 31, 2024 and 2023, and no impairment charges were recorded. For held-to-maturity investments, the Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other-than-temporary. If the Company believes an impairment of a security position is other than temporary, based on available quantitative and qualitative information as of the report date, the loss will be recognized within other income, net in the Company’s condensed statements of operations and a new cost basis in the investment is established.

Deferred Offering Costs

The Company capitalizes certain legal, professional, accounting, and other third-party fees that are directly associated with in-process equity issuances as deferred offering costs until such equity issuances are

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

consummated. After consummation of the equity issuance, these costs are recorded as a reduction in the capitalized amount associated with the equity issuance. Should the equity issuance be abandoned, the deferred offering costs are expensed immediately as a charge to operating expenses in the statement of operations. Deferred offering costs as of March 31, 2024 and December 31, 2023 were $0.3 million and $0, respectively. Such costs are classified in other assets on the condensed balance sheets.

Stock-Based Compensation

The Company accounts for its stock-based compensation awards in accordance with ASC Topic 718, Compensation – Stock Compensation (ASC 718). ASC 718 requires all stock-based payments to employees, including grants of employee stock options, to be recognized in the statements of operations based on their fair values. The Company’s stock-based awards are subject only to service-based vesting conditions. The Company measures restricted common stock awards using the difference, if any, between the purchase price per share of the award and the fair value of the Company’s common stock at the date of the grant or modification. The Company estimates the fair value of its stock option awards using the Black-Scholes option pricing model, which requires the input of assumptions, including (i) the expected stock price volatility, (ii) the calculation of expected term of the award, (iii) the risk-free interest rate, and (iv) expected dividends.

Volatility — Due to the Company’s limited operating history and a lack of company-specific historical and implied volatility data, the Company has based its estimate of expected volatility on the historical volatility of a group of similar publicly-traded companies. The Company believes that the companies in the group were most representative of the Company and had characteristics similar to its own, including stage of product development, a focus on the life sciences industry, and other economic and industry characteristics.

Expected Term — The Company uses the simplified method to calculate the expected term, as it does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term for options granted, and utilizes the contractual term for options granted.

Risk-Free Interest Rate — The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected life of the stock options.

Expected Dividends — To date, the Company has not issued any dividends and does not expect to issue dividends over the life of the options and therefore has estimated the dividend yield to be zero.

Subsequent to the closing of the Company’s IPO, the Company determines the fair market value of its common stock using the closing price of its common stock as reported on the Nasdaq Global Select Market. Prior to the closing of the Company’s IPO, there was no public market for the Company’s common stock, and the Company determined the fair value of the shares of its common stock underlying its share-based awards by considering a number of objective and subjective factors, including third-party valuations of the Company’s common stock, the valuation of comparable companies, the Company’s operating and financial performance, and general and industry-specific economic outlook, among other factors. The assumptions underlying these valuations represented management’s best estimate, with the assistance of a third-party valuation specialist, which involved inherent uncertainties and the application of management’s judgment. As a result, if the Company had used different assumptions or estimates, the fair value of the Company’s common stock and its stock-based compensation expense could have been materially different.

Compensation expense related to awards is recognized on a straight-line basis by recognizing the grant date fair value over the associated service period of the award, which is generally the vesting term. Management evaluates its award grants and modifications and will adjust the fair value if any are determined to be spring-loaded. The Company accounts for forfeitures as they occur.

Net Loss Per Share

The Company’s basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

outstanding for the period. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential common stock equivalents outstanding for the period determined using the treasury stock method. For purposes of this calculation, convertible preferred stock and stock options to purchase common stock are considered to be common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is anti-dilutive. The weighted-average number of common shares used in the basic and diluted net loss per common shareholders calculations includes the weighted-average pre-funded warrants outstanding during the period as they are exercisable at any time for nominal cash consideration. The following table sets forth the potential common shares excluded from the calculation of net loss per common share because their inclusion would be anti-dilutive:


	Three Months Ended
	March 31,
	2024	2023
Outstanding options	4,251,075	2,543,513
Unvested restricted stock awards	968,211	1,127,084

Total	5,219,286	3,670,597

Recently Issued Accounting Pronouncements

From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed, the Company believes the impact of recently issued standards that are not yet effective will not have a material impact on its financial position or results of operations upon adoption.

Note 3. Fair Value of Financial Instruments

The following table presents financial instruments measured at fair value on a recurring basis based on the fair value hierarchy as of March 31, 2024 and December 31, 2023 (in thousands):




	March 31,		December 31,
	2024		2023
	Level 1
Assets
Cash equivalents
Money market funds	$	85,042	$	48,661

There were no transfers within the fair value hierarchy during the periods presented.

The following methods and assumptions were used by the Company in estimating the fair values of each class of financial instrument disclosed herein:

Money Market Funds —The carrying amounts of money market funds reported as cash and cash equivalents in the condensed balance sheets approximate their fair values due to their short-term nature. The fair values of money market funds are determined by Level 1 inputs utilizing quoted prices (unadjusted) in active markets for identical assets.

U.S. Treasury Bills—As of March 31, 2024 and December 31, 2023, the Company had short- and long-term U.S. Treasury bills. Fair values of these securities are determined by Level 2 inputs utilizing quoted

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

prices (unadjusted) in active markets for similar assets. The following table presents information about the Company’s investments in held-to-maturity U.S. Treasury bills as of each reported date (in thousands):

As of March 31, 2024

Balance Sheet Location

Original Maturities

Amortized
Cost

Estimated
Fair Value

Investments

between 3 and 12 months

248,147

248,050


		As of December 31, 2023
Balance Sheet Location	Original Maturities	Amortized Cost		Estimated Fair Value

Investments	between 3 and 12 months	$	187,263	$	187,293
Investments, noncurrent	greater than 1 year	2,482		2,486
Total		$	189,745	$	189,779

Note 4. Commitments and Contingencies

License Agreement with Mitsubishi Tanabe

In July 2020, the Company entered into a license agreement (the Mitsubishi License) with Mitsubishi Tanabe Pharmaceutical Company (Mitsubishi Tanabe), pursuant to which Mitsubishi Tanabe granted the Company an exclusive, worldwide, royalty-bearing, sublicensable license under Mitsubishi Tanabe’s patent and other intellectual property rights to exploit products incorporating lorundrostat (formerly MT-4129) (Lorundrostat Products) for the prevention, treatment, diagnosis, detection, monitoring, or predisposition testing with respect to indications, diseases, and conditions in humans. Pursuant to the Mitsubishi License, the Company paid Mitsubishi Tanabe a $1.0 million upfront fee and development milestone payments of $9.0 million in the aggregate. The Company has remaining obligations to pay Mitsubishi Tanabe commercial milestone payments of up to $155.0 million in the aggregate upon first commercial sale and upon meeting certain annual sales targets, as well as additional commercial milestone payments of up to $10.0 million for a second indication. Additionally, the Company is obligated to pay Mitsubishi Tanabe tiered royalties at percentages ranging from the mid-single-digits to ten percent (10%) of aggregate net sales of each Lorundrostat Product on a Lorundrostat Product-by-Lorundrostat Product and country-by-country basis, until the later of (i) the expiration of the last-to-expire valid Mitsubishi Tanabe patent claim covering a Lorundrostat Product, (ii) ten years from the first commercial sale of a Lorundrostat Product, or (iii) the expiration of regulatory exclusivity in such country. Such royalties are subject to reduction under specified conditions, including lack of patent coverage and generic competition.

The Company is obligated to use commercially reasonable efforts to conduct and complete the development activities and to file for regulatory approval for at least one Lorundrostat Product in a major market country and consider in good faith developing at least one Lorundrostat Product in a non-major market country. If the Company elects to sublicense its rights under the Mitsubishi License to a third party with respect to exploitation of lorundrostat or any Lorundrostat Product in certain countries in Asia, the Company has agreed to negotiate such a sublicense first, for a specified period of time, with Mitsubishi Tanabe, if Mitsubishi Tanabe notifies the Company that it would like to obtain such a sublicense. The Company also agreed not to commercialize any competing product prior to three years following the first commercial sale of the first Lorundrostat Product in any country without Mitsubishi Tanabe’s prior consent.

Unless terminated earlier, the Mitsubishi License will continue until the expiration of all of the Company’s royalty obligations to Mitsubishi Tanabe. The Company may terminate the Mitsubishi License for any or no reason upon 90 or 180 days’ prior written notice to Mitsubishi Tanabe depending on whether the Lorundrostat Product has received regulatory approval. Mitsubishi Tanabe may terminate the Mitsubishi License if the Company has not initiated regulatory consultation for the first global clinical trials of lorundrostat in at least one major market country within a specified amount of time or if the Company or its affiliates or

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

sublicensees initiate a challenge to the patent rights licensed to the Company by Mitsubishi Tanabe. In addition, either party may terminate the Mitsubishi License in the event of an uncured material breach by or bankruptcy of the other party, subject to certain notice and cure periods, or upon the other party’s bankruptcy or insolvency.

The Company incurred $0 and $4.0 million of research and development expenses pursuant to the Mitsubishi License during the three months ended March 31, 2024 and 2023, respectively, that related to the Company’s initiation of its pivotal clinical program of lorundrostat. As of March 31, 2024, the Company has paid an aggregate of $9.0 million in development milestone payments and has no remaining development milestone obligations under the Mitsubishi License.

Litigation

Liabilities for loss contingencies arising from claims, assessments, litigation, fines, penalties, and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. From time to time, the Company may become involved in legal proceedings arising in the ordinary course of business. The Company was not subject to any material legal proceedings during the three months ended March 31, 2024 and 2023, and no material legal proceedings are currently pending or threatened.

Indemnification Agreements

In the ordinary course of business, the Company may provide indemnification of varying scope and terms to vendors, lessors, business partners, and other parties with respect to certain matters including, but not limited to, losses arising from breach of such agreements or intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with officers of the Company and members of its board of directors that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in many cases, unlimited. To date, the Company has not incurred any material costs as a result of such indemnifications. The Company is not aware of any claims under indemnification arrangements, and it has not accrued any liabilities related to such obligations in its condensed financial statements as of March 31, 2024 and December 31, 2023.

Note 5. Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):




	March 31,		December 31,
	2024		2023

Research and development expenses	$	12,857	$	7,122
Compensation and benefits	662		1,599
Professional fees and other	1,424		1,160
Total	$	14,943	$	9,881

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

Note 6. Capital Stock

As of March 31, 2024, the Company had reserved authorized shares of common stock for future issuance as follows:






Common stock options outstanding			4,251,075
Shares available for grant under the 2023 Plan			2,981,285
Shares available for grant under the ESPP			802,610
Pre-funded warrants issued and outstanding			549,755
Total			8,584,725

In connection with the closing of the IPO in February 2023, the Company’s board of directors approved an amendment to the Company’s amended and restated certificate of incorporation (the Restated Certificate). The Restated Certificate amended and restated the Company’s amended and restated certificate of incorporation, in its entirety to, among other things, increase the authorized number of shares of common stock to 500,000,000 shares and authorize 50,000,000 shares of undesignated preferred stock that may be issued from time to time by the Company’s board of directors in one or more series.

Preferred Stock Offerings

In February 2021, the Company entered into a Series A redeemable convertible preferred stock agreement (the Series A Purchase Agreement). From February 2021 to April 2021, the Company issued 50,311,827 shares of Series A Preferred Stock at $0.477 per share for net proceeds of $23.8 million. Additionally, in February 2021, the Company’s convertible notes and related accrued interest converted into 10,868,432 shares of Series A Preferred Stock. The Series A Purchase Agreement provided for an additional closing for the Series A purchasers for the issuance of up to 25,151,957 shares of Series A Preferred Stock, at a purchase price of $0.477 per share for aggregate cash proceeds of $12.0 million, upon the achievement of the Milestone (as defined in the Series A Purchase Agreement) or a waiver of the Milestone by the requisite holders. In January 2022, the Company achieved the Milestone under the Series A Purchase Agreement and sold an aggregate of 25,151,957 shares of Series A Preferred Stock under the Series A Purchase Agreement to certain existing investors, members of the Company’s board of directors, and affiliates of members of its board of directors, at a purchase price of $0.477 per share for aggregate net proceeds of approximately $12.0 million.

In June 2022, the Company entered into a Series B convertible preferred stock agreement with certain investors, including members of the Company’s board of directors and affiliates of members of its board of directors, pursuant to which the Company issued and sold to such investors an aggregate of 136,510,868 shares of Series B Preferred Stock at a purchase price of $0.8644 per share for aggregate net proceeds of approximately $117.7 million.

Immediately prior to the closing of the IPO, 86,332,216 shares of Series A Preferred Stock and 136,510,868 shares of Series B Preferred Stock converted into 20,637,415 shares of the Company’s common stock, and the carrying value of Series A Preferred Stock and Series B Preferred Stock was converted to permanent equity.

Private Placement Offering

On February 7, 2024, the Company entered into a securities purchase agreement (the Purchase Agreement) with the purchasers named therein (the Purchasers), for the private placement (the Private Placement) of (i) 8,339,169 shares (the Shares) of the Company’s common stock at a price of $13.50 per Share, and (ii) with respect to certain Purchasers, pre-funded warrants to purchase an aggregate of 549,755 shares of common stock (the Pre-Funded Warrants) in lieu of shares of common stock, at a purchase price of $13.499 per Pre-Funded Warrants (the shares of common stock issuable upon exercise of the Pre-Funded Warrants, the Warrant Shares) for aggregate net proceeds of approximately $116.1 million. The Company expects to use the

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

net proceeds from the Private Placement to fund the research and development of lorundrostat and for working capital and general corporate purposes.

Each Pre-Funded Warrant has an exercise price of $0.001 per share of common stock, is immediately exercisable on the date of issuance, and will not expire. Under the terms of the Pre-Funded Warrants, the Company may not effect the exercise of any portion of any Pre-Funded Warrant, and a holder will not have the right to exercise any portion of any Pre-Funded Warrant, which, upon giving effect to such exercise, would cause a holder (together with its affiliates) to own more than a specified beneficial ownership limitation of either 4.99%, 9.99% or 19.99% (as selected by such holder prior to the issuance of the Pre-Funded Warrant) of the number of shares of common stock outstanding immediately after giving effect to such exercise, as such percentage ownership is determined in accordance with the terms of the Pre-Funded Warrants. However, any holder may increase or decrease such percentage to any other percentage not in excess of 19.99%, provided that any increase in such percentage shall not be effective until 61 days after such notice is delivered to the Company.

The Company registered the resale of the Shares and the Warrant Shares on a shelf registration statement on Form S-3 (Registration No. 333-278122), which was declared effective by the SEC on April 11, 2024 (the Registration Statement). Pursuant to the Purchase Agreement, the Company agreed to use its reasonable best efforts to keep the Registration Statement effective until the earliest of (i) the time as all of the Shares and Warrant Shares purchased by the Purchasers pursuant to the terms of the Purchase Agreement have been sold pursuant to the Registration Statement, or (ii) such time as the Shares and Warrant Shares become eligible for resale by non-affiliates without any volume limitations or other restrictions pursuant to Rule 144 under the Securities Act of 1933, as amended, or any other rule of similar effect.

At Market Equity Offering Sales Agreement

On March 21, 2024, the Company entered into an ATM Equity Offering Sales Agreement (the ATM Agreement) with BofA Securities, Inc. and Evercore Group L.L.C. as the Company’s sales agents (the Agents) and/or principals. Pursuant to the terms of the ATM Agreement, the Company may sell from time to time through the Agents shares of the Company’s common stock having an aggregate offering price of up to $100,000,000 (the ATM Shares). Any ATM Shares will be issued pursuant to the Registration Statement. Sales of the ATM Shares, if any, will be made by means of ordinary brokers’ transactions on the Nasdaq Global Select Market or as otherwise agreed by the Company and the Agents. Under the terms of the ATM Agreement, the Company may also sell the ATM Shares from time to time to an Agent as principal for its own account at a price to be agreed upon at the time of sale. Any sale of the ATM Shares to an Agent as principal would be pursuant to the terms of a separate terms agreement between the Company and such Agent. The Company has not yet sold any ATM Shares as of March 31, 2024.

Note 7. Stock-Based Compensation

2023 Incentive Award Plan

In February 2023, the Company’s board of directors adopted and stockholders approved the 2023 Incentive Award Plan that became effective upon the closing of the IPO (2023 Plan), under which the Company may grant stock options, restricted stock awards (RSAs), dividend equivalents, restricted stock units, stock appreciation rights, and other stock or cash-based awards to its employees, consultants, and directors. The number of shares of the Company’s common stock initially available for issuance under awards granted pursuant to the 2023 Plan was the sum of (i) 4,650,000 shares of the Company’s common stock, plus (ii) any shares subject to outstanding awards under the 2020 Plan described below as of the effective date of the 2023 Plan that become available for issuance under the 2023 Plan thereafter in accordance with its terms.

The number of shares initially available for issuance will be increased on January 1 of each calendar year beginning in 2024 and ending in 2033, by an amount equal to the lesser of (i) 4% of the shares of the Company’s common stock outstanding on the final day of the immediately preceding calendar year and (ii) such

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

smaller number of shares as determined by the Company’s board of directors. No more than 100,000,000 shares of the Company’s common stock may be issued upon the exercise of incentive stock options under the 2023 Plan. Shares issued under the 2023 Plan may be authorized but unissued shares, shares purchased on the open market, or treasury shares.

2020 Equity Incentive Plan

On July 7, 2020, the board of directors adopted, and the Company’s stockholders approved, the 2020 Equity Incentive Plan. The 2020 Equity Incentive Plan, as amended and restated (the 2020 Plan), provided for the grant of incentive stock options to employees of the Company, and for the grant of non-statutory stock options, RSAs, restricted stock unit awards, and other forms of stock awards to employees, directors, and consultants of the Company.

Subsequent to the closing of the IPO, no additional awards will be granted under the 2020 Plan. However, the 2020 Plan will continue to govern the terms and conditions of the outstanding awards granted under it. Shares of the Company’s common stock subject to awards granted under the 2020 Plan that expire, lapse, or are terminated, exchanged for cash, surrendered, repurchased, or forfeited following the effective date of the 2020 Plan will be available for issuance under the 2023 Plan in accordance with its terms.

As of March 31, 2024, the Company had the following balances by plan:


	Options Outstanding	Unvested RSAs	Shares Available for Grant
2023 Plan	3,322,685	—	2,981,285
2020 Plan	928,390	968,211	—
Total	4,251,075	968,211	2,981,285

2023 Employee Stock Purchase Plan

In February 2023, the Company’s board of directors and stockholders approved the 2023 Employee Stock Purchase Plan (ESPP), which became effective upon the closing of the Company’s IPO. The ESPP permits eligible employees who elect to participate in an offering under the ESPP to have up to a specified percentage of their eligible compensation withheld, subject to certain limitations, to purchase shares of common stock pursuant to the ESPP. A total of 400,000 shares of the Company’s common stock was initially reserved for issuance under the ESPP. The first ESPP offering period commenced on July 1, 2023, with each new six-month offering period beginning each January 1 and July 1. ESPP purchases of common stock occur at a price equal to 85% of the lower of (i) the closing price on the first trading day of the offering period or (ii) the closing price on the last trading day of the offering period. As of March 31, 2024, the Company had 802,610 shares available for issuance and 8,729 cumulative shares had been issued under the ESPP.

In addition, the number of shares available for issuance under the ESPP will be annually increased on January 1 of each calendar year beginning in 2024 and ending in and including 2033, by an amount equal to the lesser of (i) 1% of the shares outstanding on the final day of the immediately preceding calendar year and (ii) such smaller number of shares as is determined by the Company’s board of directors, provided that no more than 15,000,000 shares of the Company’s common stock may be issued under the ESPP.

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Mineralys Therapeutics, Inc.

Notes to Condensed Financial Statements

(unaudited)

Total stock-based compensation expense reported in the statements of operations was allocated as follows (in thousands):


	Three Months Ended
	March 31,
		2024		2023
Research and development		$	965	$	335
General and administrative		1,226		414
Total		$	2,191	$	749

Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations

The following discussion and analysis and the unaudited interim financial statements included in this Quarterly Report on Form 10-Q (Quarterly Report) should be read in conjunction with the financial statements and notes thereto for the year ended December 31, 2023 and the related Management’s Discussion and Analysis of Financial Condition and Results of Operations, both of which are contained in the Annual Report on Form 10-K for the year ended December 31, 2023.

Forward-Looking Statements

This Quarterly Report contains forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended (the Securities Act), and Section 21E of the Securities Exchange Act of 1934, as amended (the Exchange Act). All statements other than statements of historical facts contained in this Quarterly Report, including statements regarding our future results of operations and financial position, business strategy, research and development plans, the anticipated timing, costs, design, and conduct of our ongoing and planned preclinical studies and planned clinical trials for lorundrostat and any future product candidates, the timing and likelihood of regulatory filings and approvals for lorundrostat and any future product candidates, our ability to commercialize our product candidates, if approved, the potential to develop future product candidates, the potential benefits of strategic collaborations and our intent to enter into any strategic arrangements, the timing and likelihood of success, and plans and objectives of management for future operations and future results of anticipated product development efforts, are forward-looking statements. These statements involve known and unknown risks, uncertainties, and other important factors that may cause our actual results, performance, or achievements to be materially different from any future results, performance, or achievements expressed or implied by the forward-looking statements. This Quarterly Report also contains estimates and other statistical data made by independent parties and by us relating to market size and growth and other data about our industry. This data involves a number of assumptions and limitations, and you are cautioned not to give undue weight to such estimates. In addition, projections, assumptions, and estimates of our future performance and the future performance of the markets in which we operate are necessarily subject to a high degree of uncertainty and risk.

In some cases, you can identify forward-looking statements by terms such as “anticipate,” “believe,” “continue” “could,” “estimate,” “expect,” “intend,” “may,” “plan,” “potential,” “predict,” “project,” “should,” “target,” “will” or "would" or the negative of these terms or other similar expressions. The forward-looking statements in this Quarterly Report are only predictions. We have based these forward-looking statements largely on our current expectations and projections about future events and financial trends that we believe may affect our business, financial condition, and results of operations. These forward-looking statements speak only as of the date of this Quarterly Report and are subject to a number of risks, uncertainties, and assumptions, including, without limitation, the risk factors described in Part II, Item 1A, “Risk Factors,” in Part I, Item 1A, “Risk Factors” in our Annual Report on Form 10-K for the year ended December 31, 2023, and under a similar heading in any other periodic or current report we may file with the U.S. Securities and Exchange Commission (the SEC) in the future. The events and circumstances reflected in our forward-looking statements may not be achieved or occur and actual results could differ materially from those projected in the forward-looking statements. Moreover, we operate in an evolving environment. New risk factors and uncertainties may emerge from time to time, and it is not possible for management to predict all risk factors and uncertainties. Except as required by applicable law, we do not plan to publicly update or revise any forward-looking statements contained herein, whether as a result of any new information, future events, changed circumstances, or otherwise. All forward-looking statements are qualified in their entirety by this cautionary statement, which is made under the safe harbor provisions of the Private Securities Litigation Reform Act of 1995.

This Quarterly Report includes trademarks, tradenames, and service marks that are the property of other organizations. Solely for convenience, trademarks and tradenames referred to in this Quarterly Report appear without the ® and ™ symbols, but those references are not intended to indicate, in any way, that we will

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not assert, to the fullest extent under applicable law, our rights, or that the applicable owner will not assert its rights, to these trademarks and tradenames.

Overview

We are a clinical-stage biopharmaceutical company focused on developing medicines to target diseases driven by dysregulated aldosterone. Our clinical-stage product candidate, lorundrostat, is a proprietary, orally administered, highly selective aldosterone synthase inhibitor (ASI) that we are initially developing for the treatment of cardiorenal conditions affected by dysregulated aldosterone, including hypertension and chronic kidney disease (CKD). In the United States, there are over 115 million patients who have sustained elevated blood pressure (BP), or hypertension, and more than half of this population fails to achieve their BP goals, defined as BP of below 130/80 mmHg, with currently available medications. There are over 30 million treated patients who do not achieve their BP goal, of whom approximately 20 million have systolic BP levels greater than 140 mmHg. Patients with hypertension that persists despite taking two or more medications have 1.8 and 2.5 times greater mortality risk due to either cardiovascular disease or stroke, respectively. In a Phase 2 proof-of-concept clinical trial evaluating 200 subjects with uncontrolled hypertension (uHTN) or resistant hypertension (rHTN), lorundrostat demonstrated a clinically meaningful and statistically significant reduction in BP with once-daily dosing and was well tolerated. Dysregulated aldosterone levels are a key factor in driving hypertension in approximately 25% of hypertensive patients. In addition to hypertension, we intend to investigate the benefits of lorundrostat in subjects with hypertension and CKD. We believe that our product candidate holds promise to be an innovative solution for the rapidly growing unmet need in multiple cardiorenal metabolic disorders.

Clinical Highlights

Pivotal Hypertension Program

In April 2023, we initiated our first pivotal trial, Advance-HTN, a randomized, double-blind, placebo-controlled Phase 2 clinical trial to evaluate the efficacy and safety of lorundrostat for the treatment of uHTN or rHTN, when used as an add-on therapy to a standardized background treatment of two or three antihypertensive medications in 261 adult subjects. Subjects who meet screening criteria will have their existing hypertension medications discontinued and start on a standard regimen of an ARB and a diuretic, if previously on two medications, or a standard regimen of ARB, diuretic and calcium channel blocker if previously on three to five medications. Subjects who remain hypertensive, despite the standardized regimen are then randomized into three cohorts and treated for twelve weeks: lorundrostat 50 mg QD, lorundrostat 50 mg QD, and an option to titrate to 100 mg QD at week four based on defined criteria or placebo. The primary endpoint of the trial will be change in 24-hour ambulatory systolic BP at week twelve from baseline for active cohorts versus placebo. Topline data from this trial is anticipated in the fourth quarter of 2024.

In December 2023, we initiated our second pivotal trial, Launch-HTN, a randomized, double-blind, placebo-controlled Phase 3 clinical trial to evaluate the efficacy and safety of lorundrostat for the treatment of uHTN or rHTN, when used as an add-on therapy to their existing, prescribed background treatment of two to five antihypertensive medications in up to approximately 1,000 adult subjects. Subjects are then randomized into three cohorts and treated for twelve weeks: lorundrostat 50 mg QD, lorundrostat 50 mg QD and an option to titrate to 100 mg QD at week six based on defined criteria or placebo. The primary endpoint of the trial will be change in office measured systolic BP at week twelve from baseline for active cohorts versus placebo. Topline data from this trial is anticipated in the second half of 2025.

In mid-2023, we initiated an open-label extension trial, Transform-HTN, to allow subjects to continue to receive lorundrostat and obtain long-term efficacy and safety data. All subjects in the pivotal hypertension program, including the Advance-HTN and Launch-HTN trials, as well as the Explore-CKD trial, will be given the opportunity to participate in the extension trial.

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Other Indications

Lorundrostat has been developed to normalize the production of aldosterone, and we believe this mechanism can be applied to other indications where dysregulated aldosterone biology plays a role, including CKD and cardiorenal indications.

The Explore-CKD trial is designed to evaluate lorundrostat in hypertensive subjects with Stage 2 to 3b CKD. The Phase 2 clinical trial was recently modified from its original design to enroll both naïve to and patients on SGLT2 inhibitors. This change reflects how SGLT2 inhibitors have quickly become standard of care for patients with CKD. All study participants will stay on an SGLT2 inhibitor throughout the course of the trial. We also lowered the eGFR criteria for the proof-of-concept study from 45ml/min/1.73m2 to 30ml/min/1.73m2 and eliminated the original Part B profiling portion of the study. The study periods were reduced to four weeks, which we believe will provide ample time to demonstrate clinical benefit on BP reduction and kidney benefit. The primary endpoint is placebo-adjusted change from baseline in systolic BP and an exploratory endpoint is placebo-adjusted percent change from baseline in urine albumin-to-creatinine ratio at week four. As this is an exploratory trial, interim data analyses may be conducted at one or more points in time. Topline data from this trial continues to be anticipated between the fourth quarter of 2024 and the first quarter of 2025.

Financial Overview

We commenced our operations in May 2019 and have devoted substantially all of our resources to date to organizing and staffing our company, business planning, raising capital, in-licensing our product candidate, lorundrostat, establishing our intellectual property portfolio, conducting research, preclinical studies, and clinical trials, and providing other general and administrative support for our operations. As of March 31, 2024, we had cash, cash equivalents, and investments of $338.6 million. From inception through the date of this Quarterly Report, we raised aggregate gross proceeds of approximately $498.8 million from the sale of common stock, convertible preferred stock, convertible notes, and pre-funded warrants. In February 2023, we completed our initial public offering (IPO) of 13,800,000 shares of our common stock at a price to the public of $16.00 per share, including the exercise in full by the underwriters of their option to purchase 1,800,000 additional shares of our common stock. Including the option exercise, our aggregate net proceeds from the IPO were approximately $201.4 million, net of underwriting discounts, commissions, and offering costs. In February 2024, we sold 8,339,169 shares of common stock and, to certain purchasers, 549,755 pre-funded warrants to purchase common stock for aggregate net proceeds of approximately $116.1 million, net of offering expenses, in a private placement offering (the Private Placement).

We do not have any products approved for sale, have not generated any revenue, and have incurred net losses since our inception. Our operations to date have been limited to business planning, raising capital, in-licensing and developing lorundrostat, conducting clinical trials, and other research and development activities. Our net losses for the three months ended March 31, 2024 and 2023 were $31.5 million and $12.6 million, respectively. As of March 31, 2024 and December 31, 2023, we had an accumulated deficit of $156.2 million and $124.7 million, respectively. Our net losses may fluctuate significantly from quarter to quarter and year to year, depending on the timing of our clinical development activities and other research and development activities. We expect our expenses and operating losses will increase substantially as we conduct our ongoing and planned clinical trials for lorundrostat, potentially seek regulatory approval for lorundrostat and any future product candidates we may develop, expand our clinical, regulatory, quality, manufacturing, and commercialization capabilities, obtain, maintain, protect and enforce our intellectual property, expand our general and administrative support functions, including hiring additional personnel, and incur additional costs associated with operating as a public company.

Based on our current operating plan, we believe that our cash, cash equivalents, and investments will be sufficient to allow us to fund our operations for at least twelve months. We have never generated any revenue and do not expect to generate any revenue from product sales unless and until we successfully complete the development of, and obtain regulatory approval for, lorundrostat, which will not be for several years, if ever. Accordingly, until such time as we can generate significant revenue from sales of lorundrostat, if ever, we

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expect to finance our cash needs through equity offerings, debt financings, or other capital sources, including potential collaborations, licenses, and other similar arrangements. However, we may be unable to raise additional funds or enter into such other arrangements when needed on favorable terms or at all. Our failure to raise capital or enter into such other arrangements when needed would have a negative impact on our financial condition and could force us to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market product candidates that we would otherwise prefer to develop and market ourselves. For more information, see “Liquidity and Capital Resources.”

License Agreement with Mitsubishi Tanabe

In July 2020, we entered into a license agreement (the Mitsubishi License) with Mitsubishi Tanabe Pharmaceutical Company (Mitsubishi Tanabe), pursuant to which Mitsubishi Tanabe granted us an exclusive, worldwide, royalty-bearing, sublicensable license under Mitsubishi Tanabe’s patent and other intellectual property rights to exploit products incorporating lorundrostat (formerly MT-4129) (Lorundrostat Products) for the prevention, treatment, diagnosis, detection, monitoring, or predisposition testing with respect to indications, diseases, and conditions in humans. Pursuant to the Mitsubishi License, we paid Mitsubishi Tanabe a $1.0 million upfront fee and development milestone payments of $9.0 million in the aggregate. We have remaining obligations to pay Mitsubishi Tanabe commercial milestone payments of up to $155.0 million in the aggregate upon first commercial sale and upon meeting certain annual sales targets, as well as additional commercial milestone payments of up to $10.0 million for a second indication. Additionally, we are obligated to pay Mitsubishi Tanabe tiered royalties at percentages ranging from the mid-single digits to ten percent (10%) of aggregate net sales of each Lorundrostat Product on a Lorundrostat Product-by-Lorundrostat Product and country-by-country basis, until the later of (i) the expiration of the last-to-expire valid Mitsubishi Tanabe patent claim covering a Lorundrostat Product, (ii) ten years from the first commercial sale of a Lorundrostat Product, or (iii) the expiration of regulatory exclusivity in such country. Such royalties are subject to reduction under specified conditions, including lack of patent coverage and generic competition. We incurred $0 and $4.0 million of research and development expenses pursuant to the Mitsubishi License during the three months ended March 31, 2024 and 2023, respectively, that related to the initiation of our pivotal clinical program of lorundrostat. As of March 31, 2024, we have paid an aggregate of $9.0 million in development milestone payments and have no remaining development milestone obligations under the Mitsubishi License.

We are obligated to use commercially reasonable efforts to conduct and complete the development activities and to file for regulatory approval for at least one Lorundrostat Product in a major market country and consider in good faith developing at least one Lorundrostat Product in a non-major market country. If we elect to sublicense our rights under the Mitsubishi License to a third party with respect to exploitation of lorundrostat or any Lorundrostat Product in certain countries in Asia, we have agreed to negotiate such a sublicense first, for a specified period of time, with Mitsubishi Tanabe, if Mitsubishi Tanabe notifies us that it would like to obtain such a sublicense. We also agreed not to commercialize any competing product prior to three years following the first commercial sale of the first Lorundrostat Product in any country without Mitsubishi Tanabe’s prior consent.

Private Placement Offering

On February 7, 2024, we entered into a securities purchase agreement (the Purchase Agreement) with the purchasers named therein (the Purchasers), for the Private Placement of (i) 8,339,169 shares (the Shares) of our common stock at a price of $13.50 per Share, and (ii) with respect to certain Purchasers, Pre-Funded Warrants to purchase an aggregate of 549,755 shares of common stock (the Pre-Funded Warrants) in lieu of shares of common stock, at a purchase price of $13.499 per Pre-Funded Warrant (the shares of common stock issuable upon exercise of the Pre-Funded Warrants, the Warrant Shares) for aggregate net proceeds of approximately $116.1 million. We expect to use the net proceeds from the Private Placement to fund the research and development of lorundrostat and for working capital and general corporate purposes.

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not effect the exercise of any portion of any Pre-Funded Warrant, and a holder will not have the right to exercise any portion of any Pre-Funded Warrant, which, upon giving effect to such exercise, would cause a holder (together with its affiliates) to own more than a specified beneficial ownership limitation of either 4.99%, 9.99% or 19.99% (as selected by such holder prior to the issuance of the Pre-Funded Warrant) of the number of shares of common stock outstanding immediately after giving effect to such exercise, as such percentage ownership is determined in accordance with the terms of the Pre-Funded Warrants. However, any holder may increase or decrease such percentage to any other percentage not in excess of 19.99%, provided that any increase in such percentage shall not be effective until 61 days after such notice is delivered to us.

We registered the resale of the Shares and the Warrant Shares on a shelf registration statement on Form S-3 (Registration No. 333-278122), which was declared effective by the SEC on April 11, 2024 (the Registration Statement). Pursuant to the Purchase Agreement, we agreed to use our reasonable best efforts to keep the Registration Statement effective until the earliest of (i) the time as all of the Shares and Warrant Shares purchased by the Purchasers pursuant to the terms of the Purchase Agreement have been sold pursuant to the Registration Statement, or (ii) such time as the Shares and Warrant Shares become eligible for resale by non-affiliates without any volume limitations or other restrictions pursuant to Rule 144 under the Securities Act or any other rule of similar effect.

At Market Equity Offering Sales Agreement

On March 21, 2024, we entered into an ATM Equity Offering Sales Agreement (the ATM Agreement) with BofA Securities, Inc. and Evercore Group L.L.C. as our sales agents (the Agents) and/or principals. Pursuant to the terms of the ATM Agreement, we may sell from time to time through the Agents shares of our common stock having an aggregate offering price of up to $100,000,000 (the ATM Shares). Any ATM Shares will be issued pursuant to the Registration Statement. Sales of the ATM Shares, if any, will be made by means of ordinary brokers’ transactions on the Nasdaq Global Select Market or as otherwise agreed by us and the Agents. Under the terms of the ATM Agreement, we may also sell the ATM Shares from time to time to an Agent as principal for its own account at a price to be agreed upon at the time of sale. Any sale of the ATM Shares to an Agent as principal would be pursuant to the terms of a separate terms agreement between us and such Agent. We have not yet sold any ATM Shares as of March 31, 2024.

Key Components of Results of Operations

Operating Expenses

Research and Development

Research and development expenses consist primarily of external and internal costs related to the development of lorundrostat. Research and development expenses are recognized as incurred, and payments made prior to the receipt of goods or services to be used in research and development are capitalized until the goods are received or when the services are performed.

Research and development expenses include:

•salaries, bonuses, employee benefits, and stock-based compensation charges for those individuals involved in research and development efforts;

•external research and development expenses incurred under agreements with contract research organizations (CROs) and consultants to conduct and support our clinical trials of lorundrostat, and payments made under the Mitsubishi License; and

•costs related to manufacturing lorundrostat for our clinical trials.

We plan to substantially increase our research and development expenses for the foreseeable future as we continue the development of lorundrostat. We cannot determine with certainty the timing of initiation, the

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duration, or the completion costs of current or future clinical trials and preclinical studies of lorundrostat or any future product candidates due to the inherently unpredictable nature of clinical and preclinical development. Clinical and preclinical development timelines, the probability of success, and development costs can differ materially from expectations. In addition, we cannot forecast whether lorundrostat or any future product candidates may be subject to future collaborations, when such arrangements will be secured, if at all, and to what degree such arrangements would affect our development plans and capital requirements.

Our future development costs may vary significantly based on factors such as:

•the initiation, type, number, scope, progress, expansions, results, costs, and timing of clinical trials and preclinical studies of lorundrostat and any future product candidates we may choose to pursue, including any modifications to clinical development plans based on feedback that we may receive from regulatory authorities;

•our ability and strategic decision to develop future product candidates other than lorundrostat, and the timing of such development, if any;

•our ability to receive timely regulatory approvals for lorundrostat, any future product candidates, and additional indications of lorundrostat and any future product candidates, in the jurisdictions in which we or any future partners apply for such approvals;

•the costs and timing of manufacturing lorundrostat or any future product candidates for use in our trials, including as a result of inflation, any supply chain issues, or component shortages;

•any additional jurisdictions in which we may seek approval for lorundrostat and any future product candidates and timing of seeking approval in such jurisdictions;

•the drop-out or discontinuation rates of clinical trial patients;

•potential additional safety monitoring requested by regulatory agencies;

•the duration of patient participation in the trials and follow-up;

•the phase of development of the product candidate;

•the efficacy and safety profile of the relevant product candidate; and

•the extent to which we establish strategic collaborations or other arrangements.

General and Administrative Expenses

General and administrative expenses consist primarily of personnel-related expenses, including employee salaries, bonuses, benefits, and stock-based compensation charges, for personnel in executive and administrative functions. Other significant general and administrative expenses include legal fees relating to intellectual property and corporate matters, professional fees for accounting, tax and consulting services, and insurance costs. We expect our general and administrative expenses will increase for the foreseeable future to support our increased research and development activities, manufacturing activities, and the increased costs associated with operating as a public company. These increased costs will likely include increased expenses related to the hiring of additional personnel, audit, legal, regulatory, and tax-related services associated with maintaining compliance with the exchange listing and the SEC requirements and requirements of the Sarbanes-Oxley Act of 2002, director and officer insurance costs, and investor and public relations costs.

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Other Income, Net

Interest Income, Net

Interest income reported in each period is associated with our investments in money market funds and U.S. treasuries, net of fees, or other related expenses.

Results of Operations

Comparison of the Three Months Ended March 31, 2024 and 2023


	Three Months Ended,
	March 31,
	2024		2023		Change
	(in thousands)


Research and development expenses	$	(30,754)	$	(12,293)	$	(18,461)
General and administrative expenses	(4,608)		(2,645)		(1,963)
Total other income, net	3,854		2,330		1,524
Net loss	$	(31,508)	$	(12,608)	$	(18,900)

Research and Development Expenses

Research and development expenses increased by $18.5 million for the three months ended March 31, 2024, compared to the three months ended March 31, 2023, which was primarily due to increases of $16.8 million in preclinical and clinical costs, driven by the initiation of the lorundrostat pivotal program beginning in the second quarter of 2023 and the Explore-CKD trial that began in December 2023, $3.7 million in clinical supply, manufacturing, and regulatory costs, $1.7 million in higher compensation expense resulting from additions to headcount and stock-based compensation, and $0.3 million in other research and development expenses, partially offset by a decrease of $4.0 million in license fees.

General and Administrative Expenses

General and administrative expenses increased by $2.0 million for the three months ended March 31, 2024, compared to the three months ended March 31, 2023. The increase was primarily due to $1.3 million in higher compensation expense resulting from additions to headcount and stock-based compensation, $0.5 million in higher professional fees associated with operating as a public company, and $0.2 million in higher insurance and other administrative expenses.

Total Other Income, Net

Total other income, net increased by $1.5 million for the three months ended March 31, 2024, compared to the three months ended March 31, 2023, which was primarily attributable to increased interest earned on our investments in money market funds and U.S. treasuries.

Liquidity and Capital Resources

We have incurred net losses and negative cash flows from operations since our inception and anticipate we will continue to incur net losses and have negative cash flows from operations for the foreseeable future as we continue the development of, seek regulatory approval for, and potentially commercialize lorundrostat, seek to identify, assess, acquire, and in-license intellectual property related to or develop additional product candidates and operate as a public company. From inception through the date of this Quarterly Report, we raised aggregate gross proceeds of approximately $498.8 million from the sale of common stock, convertible preferred stock, convertible notes, and pre-funded warrants. As of March 31, 2024, we had cash, cash equivalents, and investments of $338.6 million. In February 2023, we completed our IPO of 13,800,000 shares of our common stock sold at a price to the public of $16.00 per share, including the exercise in full by the

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underwriters of their option to purchase 1,800,000 additional shares of our common stock, for net proceeds of approximately $201.4 million, net of underwriting discounts, commissions, and offering costs. In February 2024, we sold 8,339,169 Shares and, to certain Purchasers, 549,755 Pre-Funded Warrants for aggregate net proceeds of approximately $116.1 million in a Private Placement.

Our primary uses of cash to date have been to fund our research and development activities, including with respect to lorundrostat, business planning, establishing and maintaining our intellectual property portfolio, hiring personnel, raising capital, and providing general and administrative support for these operations.

Funding Requirements

Based on our current operating plan, we believe that our cash, cash equivalents, and investments as of March 31, 2024 will be sufficient to allow us to fund our operations for at least twelve months. However, our forecast of the period of time through which our financial resources will be adequate to support our operations is a forward-looking statement that involves risks and uncertainties, and actual results could vary materially. We have based this estimate on assumptions that may prove to be wrong, and we could deplete our capital resources sooner than we expect. Additionally, the process of testing product candidates in clinical trials is costly, and the timing of progress and expenses in these trials is uncertain.

Our future capital requirements will depend on many factors, including, but not limited to:

•our ability and strategic decision to develop future product candidates other than lorundrostat, and the timing of such development, if any;

•the costs and timing of manufacturing for lorundrostat, or any future product candidate, including commercial manufacture at sufficient scale, if any product candidate is approved, including as a result of inflation, any supply chain issues, or component shortages;

•any additional jurisdictions in which we may seek approval for lorundrostat and any future product candidates and timing of seeking approval in such jurisdictions;

•the costs, timing, and outcome of regulatory meetings and reviews of lorundrostat or any future product candidates;

•any delays and cost increases that may result from any pandemic or other healthcare emergency;

•the costs of obtaining, maintaining, enforcing, and protecting our patents and other intellectual property and proprietary rights;

•our efforts to enhance operational systems and hire additional personnel to satisfy our obligations as a public company, including enhanced internal control over financial reporting;

•the costs associated with hiring additional personnel and consultants as our business grows, including additional executive officers and clinical development, regulatory, CMC, quality, and commercial personnel;

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•the timing and amount of the milestone, royalty, or other payments we must make to Mitsubishi Tanabe, from whom we have in-licensed lorundrostat, or any future licensors;

•the costs and timing of establishing or securing sales and marketing capabilities if lorundrostat or any future product candidate is approved;

•our ability to achieve sufficient market acceptance, coverage, and adequate reimbursement from third-party payors, and adequate market share and revenue for any approved products;

•patients’ willingness to pay out-of-pocket for any approved products in the absence of coverage and/or adequate reimbursement from third-party payors;

•the terms and timing of establishing and maintaining collaborations, licenses, and other similar arrangements;

•costs associated with any products or technologies that we may in-license or acquire; and

•the other risks and uncertainties described under the heading “Risk Factors” in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 202 3 and in “Forward-Looking Statements” and elsewhere in this Quarterly Report.

Until such time, if ever, as we can generate substantial product revenue, we expect to finance our cash needs through equity offerings, debt financings, or other capital sources, including potential collaborations, licenses, and other similar arrangements. We do not have any committed external source of funds. To the extent that we raise additional capital through the sale of equity or convertible debt securities, the ownership interest of our stockholders may be diluted, and the terms of these securities may include liquidation or other preferences that adversely affect the rights of our common stockholders. Debt financing and equity financing, if available, may involve agreements that include covenants limiting or restricting our ability to take specific actions, such as incurring additional debt, making capital expenditures, or declaring dividends. Our ability to raise additional funds may be adversely impacted by potential worsening global economic conditions and the disruptions to, and volatility in, the credit and financial markets in the United States and worldwide resulting from factors that include but are not limited to, inflation, elevated interest rates, geopolitical conflict in and around Ukraine, Israel, and other areas of the world, diminished liquidity and credit availability, declines in consumer confidence, declines in economic growth, increases in unemployment rates, and uncertainty about economic stability. If the equity and credit markets deteriorate, it may make any necessary debt or equity financing more difficult, more costly, and more dilutive. If we raise additional funds through future collaborations, licenses, or other similar arrangements with third parties, we may have to relinquish valuable rights to our future revenue streams, product candidates, research programs, intellectual property or proprietary technology, or grant licenses on terms that may not be favorable to us and/or may reduce the value of our common stock. If we are unable to raise additional funds through equity or debt financings or other arrangements when needed or on terms acceptable to us, we may be required to delay, limit, reduce, or terminate our product development or future commercialization efforts or grant rights to develop and market our product candidates even if we would otherwise prefer to develop and market such product candidates ourselves, or on less favorable terms than we would otherwise choose.

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Cash Flows

Comparison of the Three Months Ended March 31, 2024 and 2023

Since our inception, we have primarily used our available cash to fund expenditures related to the in-license and development of lorundrostat. The following table sets forth a summary of cash flows for the periods presented:


	Three Months Ended
	March 31,
	2024		2023
	(in thousands)
Net cash provided by (used in):
Operating activities	$	(19,139)	$	(12,775)
Investing activities	(55,952)		(140,251)
Financing activities	116,205		203,571
Net	$	41,114	$	50,545

Operating Activities

Net cash used in operating activities of $19.1 million during the three months ended March 31, 2024 increased, compared to $12.8 million during the three months ended March 31, 2023, which was primarily attributable to an increase in cash used to support our operating activities, including but not limited to, the development of lorundrostat and related clinical trial expenses, personnel and compensation expense, legal and professional fees to support our operations, and general working capital requirements. The $6.4 million increase in cash used consisted of an increase in net loss, adjusted for non-cash expenses of approximately $19.1 million, and the net effect of changes in working capital of $12.7 million.

Investing Activities

Net cash used in investing activities of $56.0 million during the three months ended March 31, 2024 decreased, compared to $140.3 million during the three months ended March 31, 2023. The decrease was primarily attributable to the timing and amount of purchases and maturities of marketable securities in each period. During the three months ended March 31, 2024 compared to the three months ended March 31, 2023, an increase in maturities of prior purchases of $45.0 million occurred, which was partially offset by a reduction in purchases of $39.4 million.

Financing Activities

Net cash provided by financing activities of $116.2 million during the three months ended March 31, 2024 decreased, compared to $203.6 million during the three months ended March 31, 2023. During the three months ended March 31, 2024, we received net proceeds of $116.1 million from the sale of Shares and Pre-Funded Warrants in the Private Placement, and during the three months ended March 31, 2023, we received net proceeds of $203.6 million from the sale of our common stock in our IPO.

Contractual Obligations and Commitments

Under the Mitsubishi License, we have milestone payment obligations that are contingent upon the achievement of specified levels of product sales and are required to make certain royalty payments in connection with the sale of products developed under the agreement. We are currently unable to estimate the timing or likelihood of achieving other future milestones or making future product sales. See above and Note 4. “Commitments and Contingencies” to our financial statements included elsewhere in this Quarterly Report for additional information regarding the Mitsubishi License.

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We enter into contracts in the normal course of business for contract research services, contract manufacturing services, professional services, and other services and products for operating purposes. These contracts generally provide for termination after a notice period, and, therefore, are cancelable contracts.

Critical Accounting Estimates

We have prepared the condensed financial statements in accordance with accounting principles generally accepted in the United States of America. The preparation of these condensed financial statements requires us to make estimates, assumptions, and judgments that affect the reported amounts of assets, liabilities, expenses, and related disclosures at the date of the condensed financial statements, and the reported amounts of expenses during the reporting period. On an ongoing basis, management evaluates its critical estimates, including those related to prepaid and accrued research and development expenses and stock-based compensation. We base our estimates on our historical experience and on assumptions that we believe are reasonable; however, actual results may differ materially from these estimates under different assumptions or conditions.

There were no changes during the three months ended March 31, 2024 to our critical accounting estimates as disclosed in our Annual Report on Form 10-K for the year ended December 31, 2023. For information on our significant accounting policies, please refer to Note 2. “Summary of Significant Accounting Policies” within our Annual Report on Form 10-K for the year ended December 31, 2023.

JOBS Act and Smaller Reporting Company Status

As an emerging growth company under the Jumpstart Our Business Startups Act of 2012, as amended (the JOBS Act), we can take advantage of an extended transition period for complying with new or revised accounting standards. This allows an emerging growth company to delay the adoption of certain accounting standards until those standards would otherwise apply to private companies. We have elected to use the extended transition period for complying with new or revised accounting standards and as a result of this election, our financial statements may not be comparable to companies that comply with public company effective dates. We intend to rely on other exemptions provided by the JOBS Act, including without limitation, not being required to comply with the auditor attestation requirements of Section 404(b) of the Sarbanes-Oxley Act of 2002.

We will remain an emerging growth company until the earliest of (i) the last day of the fiscal year following the fifth anniversary of the consummation of our IPO, (ii) the last day of the fiscal year in which we have total annual gross revenue of at least $1.235 billion, (iii) the last day of the fiscal year in which we are deemed to be a “large accelerated filer” as defined in Rule 12b-2 under the Exchange Act, which would occur if, among other factors, the market value of our common stock held by non-affiliates exceeded $700.0 million as of the last business day of the second fiscal quarter of such year (subject to certain conditions), or (iv) the date on which we have issued more than $1.0 billion in non-convertible debt securities during the prior three-year period.

We are also a smaller reporting company as defined in the Exchange Act. We may continue to be a smaller reporting company even after we are no longer an emerging growth company. We may take advantage of certain of the scaled disclosures available to smaller reporting companies and will be able to take advantage of these scaled disclosures for so long as our voting and non-voting common stock held by non-affiliates is less than $250.0 million measured on the last business day of our second fiscal quarter, or our annual revenue is less than $100.0 million during the most recently completed fiscal year and our voting and non-voting common stock held by non-affiliates is less than $700.0 million measured on the last business day of our second fiscal quarter.

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Recently Issued Accounting Pronouncements

We have reviewed all recently issued accounting pronouncements and have determined that, other than as disclosed elsewhere in this Quarterly Report, such standards do not have a material impact on our financial statements or do not otherwise apply to our operations.

Item 3. Quantitative and Qualitative Disclosures About Market Risk

Interest Rate Risk

We are exposed to market risk related to changes in interest rates of our investment portfolio of cash equivalents and investments. As of March 31, 2024, our cash equivalents and investments consisted of money market funds and U.S. treasury securities. Our primary exposure to market risk is interest income sensitivity, which is affected by changes in the general level of U.S. interest rates. The fair value of our short-term cash equivalents and investments is subject to change as a result of potential changes in market interest rates. Due to the nature of our cash equivalents and investments, we believe an immediate hypothetical 10% change in interest rates would not have had a material effect on our results of operations during the periods presented.

Foreign Currency Exchange Risk

We are exposed to market risk related to changes in foreign currency exchange rates. We contract with vendors that are located outside the United States and certain invoices are denominated in foreign currencies. We are subject to fluctuations in foreign currency rates in connection with these arrangements. To date, these fluctuations have not been significant, and we have not had a formal hedging program with respect to foreign currency. We believe an immediate hypothetical 10% change in exchange rates would not have had a material effect on our results of operations during the periods presented.

Effects of Inflation

Inflation generally affects us by increasing our cost of labor and research and development contract costs. Although we do not believe that inflation has had a material impact on our financial position or results of operations to date, we may experience some effect in the near future (especially if inflation rates further increase) due to an impact on the costs to conduct clinical trials, labor costs we incur to attract and retain qualified personnel, and other operational costs. Inflationary costs could adversely affect our business, financial condition, and results of operations.

Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic and current reports that we file with the SEC is recorded, processed, summarized, and reported within the time periods specified in the rules and forms of the SEC, and that such information is accumulated and communicated to our management, including our principal executive officer and principal financial officer, as appropriate, to allow timely decisions regarding required disclosures. In designing and evaluating the disclosure controls and procedures, management recognized that any controls and procedures, no matter how well designed and operated, can provide only reasonable and not absolute assurance of achieving the desired control objectives. In reaching a reasonable level of assurance, management necessarily was required to apply its judgment in evaluating the cost-benefit relationship of possible controls and procedures. In addition, the design of any system of controls is also based in part upon certain assumptions about the likelihood of future events, and there can be no assurance that any design will succeed in achieving its stated goals under all potential future conditions. Over time, control may become inadequate because of changes in conditions, or the degree of compliance with policies or procedures may deteriorate. Because of the inherent limitations in a cost-effective control system, misstatements due to error or fraud may occur and not be detected.

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Conclusion Regarding the Effectiveness of Disclosure Controls and Procedures

Under the supervision and with the participation of our management, including our principal executive officer and principal financial officer, we conducted an evaluation of the design and operation of our disclosure controls and procedures, as such term is defined in Rule 13a-15(e) and 15d-15(e) promulgated under the Exchange Act, as of the end of the period covered by this Quarterly Report. Based on that evaluation, our principal executive officer and principal financial officer concluded that our disclosure controls and procedures were effective and were operating at a reasonable assurance level as of March 31, 2024.

Changes in Internal Control over Financial Reporting

Management has determined that there were no changes in our internal control over financial reporting that occurred during the three months ended March 31, 2024 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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Part II - Other Information

Item 1. Legal Proceedings

We are not currently a party to any material proceedings. From time to time, we may become involved in legal proceedings arising in the ordinary course of our business. Regardless of outcome, litigation can have an adverse impact on us due to defense and settlement costs, diversion of management resources, negative publicity, reputational harm, and other factors.

Item 1A. Risk Factors

Our business, financial condition, and operating results may be affected by a number of factors, whether currently known or unknown, including but not limited to those described in Part I, Item 1A of our Annual Report on Form 10-K for the year ended December 31, 2023 under the heading “Risk Factors.” Any one or more of such factors could directly or indirectly cause our actual results of operations and financial condition to vary materially from past or anticipated future results of operations and financial condition. Any of these factors, in whole or in part, alone or combined with any of the other factors, could materially and adversely affect our business, financial condition, results of operations, and stock price. There have been no material changes to our risk factors since our Annual Report on Form 10-K for the year ended December 31, 2023.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

None.

Item 3. Defaults Upon Senior Securities

Not Applicable.

Item 4. Mine Safety Disclosures

Not Applicable.

Item 5. Other Information

During the three months ended March 31, 2024, one of our officers (as defined in Rule 16a-1(f) of the Exchange Act) adopted or terminated a contract, instruction, or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) of the Exchange Act or any non-Rule 10b5-1 trading arrangement (as defined in the SEC’s rules). The material terms of the Rule 10b5-1 trading arrangement are described below:

Name and Title

Action Taken

Type of Trading Arrangement

Nature of Trading Arrangement

Duration of Trading Arrangement

Number of Securities

Jon Congleton, Chief Executive Officer and Director

Adoption January 30, 2024

Trading plan intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c)

Sale of the Company’s common stock pursuant to the terms of the plan

June 11, 2024 through December 31, 2025

(1)

__________________

(1)The executive’s Rule 10b5-1 trading arrangement provides for the sale of up to 479,389 shares of common stock subject to a restricted stock award granted to Mr. Congleton that vests ratably over time.

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Item 6. Exhibits

Exhibit
Number

Incorporated by Reference

Filed Herewith

Exhibit Description

Form

Date

Number

3.1

Amended and Restated Certificate of Incorporation

8-K

2/14/23

3.1

3.2

Amended and Restated Bylaws

8-K

2/14/23

3.2

4.1

Form of Pre-Funded Warrant

8-K

2/8/24

4.1

10.1

Securities Purchase Agreement, dated February 7, 2024, by and between the Registrant and each of the purchasers party thereto

8-K

2/8/24

10.1

10.2

ATM Equity Offering Sales Agreement, dated March 21, 2024, by and among the Registra nt , BofA Securities, Inc. and Evercore Group L.L.C.

S-3

3/21/24

1.2

31.1

Certification of Principal Executive Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

31.2

Certification of Principal Financial Officer pursuant to Rules 13a-14(a) and 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.1*

Certification of Principal Executive Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

32.2*

Certification of Principal Financial Officer pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101.INS

XBRL Instance Document

101.SCH

XBRL Taxonomy Extension Schema Document

101.CAL

XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF

XBRL Taxonomy Extension Definition Linkbase Document

101.LAB

XBRL Taxonomy Extension Label Linkbase Document

101.PRE

XBRL Taxonomy Extension Presentation Linkbase Document

104

Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)

__________________

* This certification is deemed not filed for purpose of Section 18 of the Exchange Act or otherwise subject to the liability of that section, nor shall it be deemed incorporated by reference into any filing under the Securities Act or the Exchange Act.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.


		MINERALYS THERAPEUTICS, INC.


Date:	May 9, 2024	By:	/s/ Jon Congleton
			Jon Congleton
			Chief Executive Officer
			(Principal Executive Officer)

Date:	May 9, 2024	By:	/s/ Adam Levy
			Adam Levy
			Chief Financial Officer and Secretary
			(Principal Financial Officer; Principal Accounting Officer)

Exhibit 31.1

CERTIFICATION PURSUANT TO

RULE 13a-14(a) AND RULE 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Jon Congleton, certify that:

1.I have reviewed this Quarterly Report on 10-Q of Mineralys Therapeutics, Inc., a Delaware corporation;

2. Based on my knowledge, this report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this report;

3. Based on my knowledge, the financial statements, and other financial information included in this report, fairly present in all material respects the financial condition, results of operations and cash flows of the registrant as of, and for, the periods presented in this report;

4. The registrant’s other certifying officer(s) and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) and internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)) for the registrant and have:

(a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the registrant, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this report is being prepared;

(b) Designed such internal control over financial reporting, or caused such internal control over financial reporting to be designed under our supervision, to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles;

(c) Evaluated the effectiveness of the registrant’s disclosure controls and procedures and presented in this report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this report based on such evaluation; and

(d) Disclosed in this report any change in the registrant’s internal control over financial reporting that occurred during the registrant’s most recent fiscal quarter (the registrant’s fourth fiscal quarter in the case of an annual report) that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting; and

5. The registrant’s other certifying officer(s) and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the registrant’s auditors and the audit committee of the registrant’s board of directors (or persons performing the equivalent functions):

(a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the registrant’s ability to record, process, summarize and report financial information; and

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: May 9, 2024	By:	/s/ Jon Congleton
		Jon Congleton
		Chief Executive Officer
		(Principal Executive Officer)

Exhibit 31.2

CERTIFICATION PURSUANT TO

RULE 13a-14(a) AND RULE 15d-14(a) UNDER THE SECURITIES EXCHANGE ACT OF 1934,

AS ADOPTED PURSUANT TO SECTION 302 OF THE SARBANES-OXLEY ACT OF 2002

I, Adam Levy, certify that:

1.I have reviewed this Quarterly Report on 10-Q of Mineralys Therapeutics, Inc., a Delaware corporation;

(b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the registrant’s internal control over financial reporting.


Date: May 9, 2024	By:	/s/ Adam Levy
		Adam Levy
		Chief Financial Officer
		(Principal Financial Officer and Principal Accounting Officer)

Exhibit 32.1

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Mineralys Therapeutics, Inc., a Delaware corporation (the “Company”) on Form 10-Q for the period ending March 31, 2024 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I certify, pursuant to 18 U.S.C. § 1350 as, adopted pursuant to § 906 of the Sarbanes-Oxley Act of 2002, that:

(1) The Report complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.



Date: May 9, 2024						/s/ Jon Congleton
						Jon Congleton
						Chief Executive Officer
						(Principal Executive Officer)

Exhibit 32.2

CERTIFICATION PURSUANT TO

18 U.S.C. SECTION 1350, AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

(1) The Report complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2) The information contained in the Report fairly presents, in all material respects, the financial condition and result of operations of the Company.



Date: May 9, 2024						/s/ Adam Levy
						Adam Levy
						Chief Financial Officer
						(Principal Financial Officer and Principal Accounting Officer)

Cover Page - shares	3 Months Ended
Cover Page - shares	Mar. 31, 2024	May 01, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2024
Document Transition Report	false
Entity File Number	001-41614
Entity Registrant Name	MINERALYS THERAPEUTICS, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	84-1966887
Entity Address, Address Line One	150 N. Radnor Chester Rd
Entity Address, Address Line Two	Suite F200
Entity Address, City or Town	Radnor
Entity Address, State or Province	PA
Entity Address, Postal Zip Code	19087
City Area Code	888
Local Phone Number	378-6240
Title of 12(b) Security	Common stock, $0.0001 par value per share
Trading Symbol	MLYS
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		49,648,540
Entity Central Index Key	0001933414
Document Fiscal Year Focus	2024
Document Fiscal Period Focus	Q1
Amendment Flag	false
Current Fiscal Year End Date	--12-31

Condensed Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 90,418	$ 49,304
Investments	248,147	187,263
Prepaid and other current assets	8,254	12,536
Total current assets	346,819	249,103
Investments, noncurrent	0	2,482
Property and equipment, net	51	0
Other assets	379	51
Total assets	347,249	251,636
Current liabilities:
Accounts payable	4,261	601
Accrued liabilities	14,943	9,881
Total current liabilities	19,204	10,482
Commitments and contingencies (Note 4)
Stockholders’ equity:
Common stock, $0.0001 par value; 500,000,000 shares authorized as of March 31, 2024 and December 31, 2023; 49,632,989 and 41,133,916 shares issued and outstanding as of March 31, 2024 and December 31, 2023, respectively	5	4
Additional paid-in capital	484,256	365,858
Accumulated deficit	(156,216)	(124,708)
Total stockholders’ equity	328,045	241,154
Total liabilities and stockholders’ equity	$ 347,249	$ 251,636

Condensed Balance Sheets (Parentheticals) - $ / shares	Mar. 31, 2024	Dec. 31, 2023
Statement of Financial Position [Abstract]
Common stock par value (in USD per share)	$ 0.0001	$ 0.0001
Common stock shares authorized (in shares)	500,000,000	500,000,000
Common stock shares outstanding (in shares)	49,632,989	41,133,916
Common stock shares issued (in shares)	49,632,989	41,133,916

Condensed Statements of Operations - USD ($) $ in Thousands	3 Months Ended
Condensed Statements of Operations - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Operating expenses:
Research and development	$ 30,754	$ 12,293
General and administrative	4,608	2,645
Total operating expenses	35,362	14,938
Loss from operations	(35,362)	(14,938)
Interest income, net	3,853	2,329
Other income	1	1
Total other income, net	3,854	2,330
Net loss	$ (31,508)	$ (12,608)
Basic net loss per share attributable to common stockholders (in USD per share)	$ (0.70)	$ (0.51)
Diluted net loss per share attributable to common stockholders (in USD per share)	$ (0.70)	$ (0.51)
Basic weighted-average shares used to compute net loss per share attributable to common stockholders (in shares)	44,900,755	24,764,469
Diluted weighted-average shares used to compute net loss per share attributable to common stockholders (in shares)	44,900,755	24,764,469

Condensed Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) - USD ($) $ in Thousands	Total	Series A Convertible Preferred Stock	Series B Convertible Preferred Stock	Common Stock	Additional Paid-In-Capital	Accumulated Deficit
Beginning balance, convertible preferred stock (in shares) at Dec. 31, 2022		86,332,216	136,510,868
Beginning balance, convertible preferred stock at Dec. 31, 2022		$ 40,987	$ 117,657
Increase (Decrease) in Temporary Equity [Roll Forward]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)		(86,332,216)	(136,510,868)
Conversion of preferred stock to common stock upon closing of initial public offering		$ (40,987)	$ (117,657)
Ending balance, convertible preferred stock (in shares) at Mar. 31, 2023		0	0
Ending balance, convertible preferred stock at Mar. 31, 2023		$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2022				6,419,238
Beginning balance at Dec. 31, 2022	$ (52,269)			$ 1	$ 540	$ (52,810)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)				20,637,415
Conversion of preferred stock to common stock upon closing of initial public offering	158,644			$ 2	158,642
Issuance of common stock from initial public offering, net of issuance costs (in shares)				13,800,000
Issuance of common stock from initial public offering, net of issuance costs	201,359			$ 1	201,358
Stock-based compensation	749				749
Net loss	(12,608)					(12,608)
Ending balance (in shares) at Mar. 31, 2023				40,856,653
Ending balance at Mar. 31, 2023	$ 295,875			$ 4	361,289	(65,418)
Beginning balance, convertible preferred stock (in shares) at Dec. 31, 2023		0	0
Beginning balance, convertible preferred stock at Dec. 31, 2023		$ 0	$ 0
Ending balance, convertible preferred stock (in shares) at Mar. 31, 2024		0	0
Ending balance, convertible preferred stock at Mar. 31, 2024		$ 0	$ 0
Beginning balance (in shares) at Dec. 31, 2023	41,133,916			41,133,916
Beginning balance at Dec. 31, 2023	$ 241,154			$ 4	365,858	(124,708)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock from initial public offering, net of issuance costs (in shares)				8,339,169
Issuance of common stock from initial public offering, net of issuance costs	116,059			$ 1	116,058
Issuance of common stock from stock option exercises (in shares)				159,904
Issuance of common stock from stock option exercises	149				149
Stock-based compensation	2,191				2,191
Net loss	$ (31,508)					(31,508)
Ending balance (in shares) at Mar. 31, 2024	49,632,989			49,632,989
Ending balance at Mar. 31, 2024	$ 328,045			$ 5	$ 484,256	$ (156,216)

Condensed Statements of Convertible Preferred Stock and Stockholders' Equity (Deficit) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Common Stock
Issuance of common stock in initial public offering, issuance costs	$ 3,941	$ 19,441

Condensed Statements of Cash Flows - USD ($)
$ in Thousands

3 Months Ended

Mar. 31, 2024

Mar. 31, 2023

CASH FLOWS FROM OPERATING ACTIVITIES:

Net loss

$ (31,508)

$ (12,608)

Adjustments to reconcile net loss to net cash used in operating activities:

Accretion of discount on held-to-maturity securities

(2,509)

(855)

Stock-based compensation

2,191

749

Depreciation and amortization

Changes in operating assets and liabilities:

Accrued interest receivable

119

(270)

Prepaid and other current assets

4,159

(1,703)

Accounts payable and accrued liabilities

8,401

1,912

Net cash used in operating activities

(19,139)

(12,775)

CASH FLOWS FROM INVESTING ACTIVITIES:

Purchase of marketable securities

(123,393)

(162,751)

Maturity of marketable securities

67,500

22,500

Purchases of property and equipment

(59)

Net cash used in investing activities

(55,952)

(140,251)

CASH FLOWS FROM FINANCING ACTIVITIES:

Proceeds from issuance of common stock and pre-funded warrants in a private placement offering, net of paid offering costs

116,119

Proceeds from stock option exercises

149

Offering costs paid

(63)

Proceeds from issuance of common stock in initial public offering, net of offering costs

203,571

Net cash provided by financing activities

116,205

203,571

Net increase in cash and cash equivalents

41,114

50,545

Cash, cash equivalents, and restricted cash - beginning

49,304

87,701

Cash, cash equivalents, and restricted cash - ending

^[1]

90,418

138,246

Supplement Disclosure of Non-Cash Financing Activities:

Offering costs included in accounts payable and accrued liabilities

321

581

Conversion of convertible preferred stock to common stock upon closing of initial public offering

$ 0

$ 159,180

[1]	Cash and cash equivalents as of March 31, 2024 exclude investments of $248.1 million. Cash, cash equivalents, and investments amounted to $338.6 million as of March 31, 2024.

Condensed Statements of Cash Flows (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Statement of Cash Flows [Abstract]
Investments	$ 248,147	$ 189,745
Cash, cash equivalents, and investments	$ 338,600

Nature of Business	3 Months Ended
Nature of Business	Mar. 31, 2024
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Business	Nature of Business Mineralys Therapeutics, Inc. (the Company) is a clinical-stage biopharmaceutical company focused on developing medicines to target diseases driven by dysregulated aldosterone. The Company’s clinical-stage product candidate, lorundrostat, is a proprietary, orally administered, aldosterone synthase inhibitor that the Company is initially developing for the treatment of cardiorenal conditions affected by dysregulated aldosterone, including hypertension and chronic kidney disease. The Company has initiated a pivotal clinical program of lorundrostat for the treatment of uncontrolled or resistant hypertension and a Phase 2 trial for lorundrostat in hypertensive patients with Stage 2 to 3b chronic kidney disease. The Company was incorporated as a Delaware corporation in May 2019, and it is headquartered in Radnor, Pennsylvania. The Company’s operations to date have been limited to business planning, raising capital, in-licensing lorundrostat, conducting preclinical and clinical trials, and other research and development. Initial Public Offering On February 14, 2023, the Company completed an initial public offering (IPO) of 13,800,000 shares of its common stock, which included the exercise in full by the underwriters of their option to purchase 1,800,000 additional shares, at a public offering price of $16.00 per share. The net proceeds to the Company from the IPO were $201.4 million, net of underwriting discounts, commissions, and offering costs. Reverse Stock Split On February 1, 2023, the Company effected a one-for-10.798 reverse stock split of its issued and outstanding shares of common stock, par value $0.0001 per share, and a proportional adjustment to the existing conversion ratio of the Company’s preferred stock (the Reverse Stock Split). Accordingly, all share and per-share amounts for all periods presented in the accompanying condensed financial statements and notes thereto have been adjusted to reflect this Reverse Stock Split. Liquidity and Capital Resources Since its inception, the Company has not generated any revenue from product sales or other sources and has incurred significant operating losses and negative cash flows from operations. The Company’s primary uses of cash to date have been to fund research and development activities, business planning, establishing and maintaining the Company’s intellectual property portfolio, hiring personnel, raising capital, and providing general and administrative support for these operations. As of March 31, 2024, the Company had an accumulated deficit of $156.2 million and cash, cash equivalents, and investments of $338.6 million. For the three months ended March 31, 2024, the Company had a net loss of $31.5 million and net cash used in operating activities of $19.1 million. From inception to March 31, 2024, the Company has funded its operations by raising aggregate gross proceeds of approximately $498.8 million from the sale of the Company’s common stock, convertible preferred stock, convertible notes, and pre-funded warrants. The Company has a limited operating history, and the sales and income potential of its business is unproven. The Company expects to continue to incur substantial losses in the foreseeable future as a result of the Company’s research and development activities. Additional funding will be required in the future to continue with the Company’s planned research and development and other activities. The Company expects to finance its operations through equity offerings, debt financings, and other capital sources, including potential strategic collaborations, licensing, and other similar arrangements. The Company believes that its cash, cash equivalents, and investments as of March 31, 2024 will be sufficient to allow the Company to fund operations for at least twelve months from the issuance date of these condensed financial statements.

Summary of Significant Accounting Policies

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Summary of Significant Accounting Policies

Basis of Presentation

Segment Information

Use of Estimates

Cash and Cash Equivalents




	March 31,		December 31,
	2024		2023
Cash	$	5,376	$	643
Cash equivalents	85,042		48,661
Total cash and cash equivalents	$	90,418	$	49,304

Concentration of Credit Risk

Fair Value Measurements

•Level 1 – quoted prices in active markets for identical assets and liabilities

•Level 2 – other significant observable inputs (including quoted prices for similar assets and liabilities, interest rates, credit risk, etc.)

•Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of assets and liabilities)

Investments

Deferred Offering Costs

Stock-Based Compensation

Risk-Free Interest Rate — The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected life of the stock options.

Expected Dividends — To date, the Company has not issued any dividends and does not expect to issue dividends over the life of the options and therefore has estimated the dividend yield to be zero.

Net Loss Per Share


	Three Months Ended
	March 31,
	2024	2023
Outstanding options	4,251,075	2,543,513
Unvested restricted stock awards	968,211	1,127,084

Total	5,219,286	3,670,597

Recently Issued Accounting Pronouncements

Fair Value of Financial Instruments

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Fair Value of Financial Instruments

The following table presents financial instruments measured at fair value on a recurring basis based on the fair value hierarchy as of March 31, 2024 and December 31, 2023 (in thousands):




	March 31,		December 31,
	2024		2023
	Level 1
Assets
Cash equivalents
Money market funds	$	85,042	$	48,661

There were no transfers within the fair value hierarchy during the periods presented.

The following methods and assumptions were used by the Company in estimating the fair values of each class of financial instrument disclosed herein:

As of March 31, 2024

Balance Sheet Location

Original Maturities

Amortized
Cost

Estimated
Fair Value

Investments

between 3 and 12 months

248,147

248,050


		As of December 31, 2023
Balance Sheet Location	Original Maturities	Amortized Cost		Estimated Fair Value

Investments	between 3 and 12 months	$	187,263	$	187,293
Investments, noncurrent	greater than 1 year	2,482		2,486
Total		$	189,745	$	189,779

Commitment and Contingencies	3 Months Ended
Commitment and Contingencies	Mar. 31, 2024
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies License Agreement with Mitsubishi Tanabe In July 2020, the Company entered into a license agreement (the Mitsubishi License) with Mitsubishi Tanabe Pharmaceutical Company (Mitsubishi Tanabe), pursuant to which Mitsubishi Tanabe granted the Company an exclusive, worldwide, royalty-bearing, sublicensable license under Mitsubishi Tanabe’s patent and other intellectual property rights to exploit products incorporating lorundrostat (formerly MT-4129) (Lorundrostat Products) for the prevention, treatment, diagnosis, detection, monitoring, or predisposition testing with respect to indications, diseases, and conditions in humans. Pursuant to the Mitsubishi License, the Company paid Mitsubishi Tanabe a $1.0 million upfront fee and development milestone payments of $9.0 million in the aggregate. The Company has remaining obligations to pay Mitsubishi Tanabe commercial milestone payments of up to $155.0 million in the aggregate upon first commercial sale and upon meeting certain annual sales targets, as well as additional commercial milestone payments of up to $10.0 million for a second indication. Additionally, the Company is obligated to pay Mitsubishi Tanabe tiered royalties at percentages ranging from the mid-single-digits to ten percent (10%) of aggregate net sales of each Lorundrostat Product on a Lorundrostat Product-by-Lorundrostat Product and country-by-country basis, until the later of (i) the expiration of the last-to-expire valid Mitsubishi Tanabe patent claim covering a Lorundrostat Product, (ii) ten years from the first commercial sale of a Lorundrostat Product, or (iii) the expiration of regulatory exclusivity in such country. Such royalties are subject to reduction under specified conditions, including lack of patent coverage and generic competition. The Company is obligated to use commercially reasonable efforts to conduct and complete the development activities and to file for regulatory approval for at least one Lorundrostat Product in a major market country and consider in good faith developing at least one Lorundrostat Product in a non-major market country. If the Company elects to sublicense its rights under the Mitsubishi License to a third party with respect to exploitation of lorundrostat or any Lorundrostat Product in certain countries in Asia, the Company has agreed to negotiate such a sublicense first, for a specified period of time, with Mitsubishi Tanabe, if Mitsubishi Tanabe notifies the Company that it would like to obtain such a sublicense. The Company also agreed not to commercialize any competing product prior to three years following the first commercial sale of the first Lorundrostat Product in any country without Mitsubishi Tanabe’s prior consent. Unless terminated earlier, the Mitsubishi License will continue until the expiration of all of the Company’s royalty obligations to Mitsubishi Tanabe. The Company may terminate the Mitsubishi License for any or no reason upon 90 or 180 days’ prior written notice to Mitsubishi Tanabe depending on whether the Lorundrostat Product has received regulatory approval. Mitsubishi Tanabe may terminate the Mitsubishi License if the Company has not initiated regulatory consultation for the first global clinical trials of lorundrostat in at least one major market country within a specified amount of time or if the Company or its affiliates or sublicensees initiate a challenge to the patent rights licensed to the Company by Mitsubishi Tanabe. In addition, either party may terminate the Mitsubishi License in the event of an uncured material breach by or bankruptcy of the other party, subject to certain notice and cure periods, or upon the other party’s bankruptcy or insolvency. The Company incurred $0 and $4.0 million of research and development expenses pursuant to the Mitsubishi License during the three months ended March 31, 2024 and 2023, respectively, that related to the Company’s initiation of its pivotal clinical program of lorundrostat. As of March 31, 2024, the Company has paid an aggregate of $9.0 million in development milestone payments and has no remaining development milestone obligations under the Mitsubishi License. Litigation Liabilities for loss contingencies arising from claims, assessments, litigation, fines, penalties, and other sources are recorded when it is probable that a liability has been incurred and the amount can be reasonably estimated. From time to time, the Company may become involved in legal proceedings arising in the ordinary course of business. The Company was not subject to any material legal proceedings during the three months ended March 31, 2024 and 2023, and no material legal proceedings are currently pending or threatened. Indemnification Agreements In the ordinary course of business, the Company may provide indemnification of varying scope and terms to vendors, lessors, business partners, and other parties with respect to certain matters including, but not limited to, losses arising from breach of such agreements or intellectual property infringement claims made by third parties. In addition, the Company has entered into indemnification agreements with officers of the Company and members of its board of directors that will require the Company, among other things, to indemnify them against certain liabilities that may arise by reason of their status or service as directors. The maximum potential amount of future payments the Company could be required to make under these indemnification agreements is, in many cases, unlimited. To date, the Company has not incurred any material costs as a result of such indemnifications. The Company is not aware of any claims under indemnification arrangements, and it has not accrued any liabilities related to such obligations in its condensed financial statements as of March 31, 2024 and December 31, 2023.

Accrued Liabilities

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):




	March 31,		December 31,
	2024		2023

Research and development expenses	$	12,857	$	7,122
Compensation and benefits	662		1,599
Professional fees and other	1,424		1,160
Total	$	14,943	$	9,881

Capital Stock

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Capital Stock

As of March 31, 2024, the Company had reserved authorized shares of common stock for future issuance as follows:






Common stock options outstanding			4,251,075
Shares available for grant under the 2023 Plan			2,981,285
Shares available for grant under the ESPP			802,610
Pre-funded warrants issued and outstanding			549,755
Total			8,584,725

Preferred Stock Offerings

Private Placement Offering

net proceeds from the Private Placement to fund the research and development of lorundrostat and for working capital and general corporate purposes.

At Market Equity Offering Sales Agreement

Stock-Based Compensation

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Stock-Based Compensation

2023 Incentive Award Plan

2020 Equity Incentive Plan

As of March 31, 2024, the Company had the following balances by plan:


	Options Outstanding	Unvested RSAs	Shares Available for Grant
2023 Plan	3,322,685	—	2,981,285
2020 Plan	928,390	968,211	—
Total	4,251,075	968,211	2,981,285

2023 Employee Stock Purchase Plan

Total stock-based compensation expense reported in the statements of operations was allocated as follows (in thousands):


	Three Months Ended
	March 31,
		2024		2023
Research and development		$	965	$	335
General and administrative		1,226		414
Total		$	2,191	$	749

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended
Pay vs Performance Disclosure - USD ($) $ in Thousands	Mar. 31, 2024	Mar. 31, 2023
Pay vs Performance Disclosure
Net loss	$ (31,508)	$ (12,608)

Insider Trading Arrangements

3 Months Ended

Mar. 31, 2024

Trading Arrangements, by Individual

Material Terms of Trading Arrangement

The material terms of the Rule 10b5-1 trading arrangement are described below:

Name and Title

Action Taken

Type of Trading Arrangement

Nature of Trading Arrangement

Duration of Trading Arrangement

Number of Securities

Jon Congleton, Chief Executive Officer and Director

Adoption January 30, 2024

Trading plan intended to satisfy the affirmative defense conditions of Exchange Act Rule 10b5-1(c)

Sale of the Company’s common stock pursuant to the terms of the plan

June 11, 2024 through December 31, 2025

(1)

__________________

Rule 10b5-1 Arrangement Adopted

true

Non-Rule 10b5-1 Arrangement Adopted

false

Rule 10b5-1 Arrangement Terminated

false

Non-Rule 10b5-1 Arrangement Terminated

false

Jon Congleton [Member]

Trading Arrangements, by Individual

Name

Jon Congleton

Title

Chief Executive Officer and Director

Adoption Date

Adoption January 30, 2024

Arrangement Duration

568 days

Aggregate Available

479,389

Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2024
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The unaudited condensed financial statements have been prepared in accordance with accounting principles generally accepted in the United States (U.S. GAAP) and applicable rules and regulations of the U.S. Securities and Exchange Commission (SEC) for interim reporting. As permitted under those rules and regulations, certain footnotes or other financial information normally included in financial statements prepared in accordance with U.S. GAAP have been condensed or omitted. These condensed financial statements have been prepared on the same basis as the annual financial statements and, in the opinion of management, reflect all adjustments, consisting only of normal recurring adjustments, which are necessary for a fair presentation of the Company’s financial information. These unaudited condensed financial statements should be read in conjunction with the audited financial statements and related notes in the Company’s Annual Report on Form 10-K for the year ended December 31, 2023. Any reference in these notes to applicable guidance is meant to refer to the authoritative U.S. GAAP as found in the Accounting Standards Codification (ASC) and Accounting Standards Updates of the Financial Accounting Standards Board (FASB).
Segment Information	Segment Information The Company operates in one operating segment for the purposes of assessing performance and making operating decisions and, accordingly, no segment disclosures have been presented herein. All assets are held in the United States.
Use of Estimates	Use of Estimates The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from those estimates. Estimates have been used in the following areas, among others: research and development accruals, fair value of the Company’s common stock prior to the closing of the Company’s IPO, and income taxes.
Cash and Cash Equivalents	Cash and Cash Equivalents All highly liquid investments that have maturities of 90 days or less at the date of purchase are classified as cash equivalents.
Concentration of Credit Risk	Concentration of Credit Risk The Company has no significant off-balance sheet concentrations of credit risk, such as foreign currency exchange contracts, option contracts, or other hedging arrangements. Financial instruments that potentially subject the Company to concentrations of credit risk primarily consist of cash balances in several accounts with three financial institutions which, from time to time, are in excess of federally insured limits.
Fair Value Measurements	Fair Value Measurements The Company is required to disclose information on all assets and liabilities reported at fair value that enables an assessment of the inputs used in determining the reported fair values. ASC Topic 820, Fair Value Measurement, establishes a hierarchy of inputs used in measuring fair value that maximizes the use of observable inputs and minimizes the use of unobservable inputs by requiring that the observable inputs be used when available. Observable inputs are inputs that market participants would use in pricing the asset or liability based on market data obtained from sources independent of the Company. Unobservable inputs are inputs that reflect the Company’s assumptions about the inputs that market participants would use in pricing the asset or liability and are developed based on the best information available in the circumstances. The fair value hierarchy applies only to the valuation inputs used in determining the reported fair value and is not a measure of the investment credit quality. The three levels of the fair value hierarchy are described below: •Level 1 – quoted prices in active markets for identical assets and liabilities •Level 2 – other significant observable inputs (including quoted prices for similar assets and liabilities, interest rates, credit risk, etc.) •Level 3 – significant unobservable inputs (including the Company’s own assumptions in determining the fair value of assets and liabilities) For certain financial instruments, including cash and cash equivalents, prepaid expenses, accounts payable, and certain accrued liabilities, the recorded amount approximates estimated fair value due to their relatively short maturity period. Refer to Note 3. “Fair Value of Financial Instruments” for additional details of the Company’s financial instruments.
Investments	Investments The Company generally invests its excess cash in money market funds and investment-grade short- and long-term fixed-income debt securities, such as U.S. Treasury bills. Such investments are included in cash and cash equivalents, current investments, and investments - noncurrent in the condensed balance sheets. The Company determines the appropriate classification of short-term and long-term securities at the time of purchase and re-evaluates such designation as of each balance sheet date. Securities are classified as held-to-maturity when the Company has the positive intent and ability to hold the securities to maturity. Held-to-maturity securities are carried at amortized cost, adjusted for the accretion of discounts using the interest method. The Company invested in marketable securities during the three months ended March 31, 2024 and 2023, and no impairment charges were recorded. For held-to-maturity investments, the Company periodically reviews each individual security position that has an unrealized loss, or impairment, to determine if that impairment is other-than-temporary. If the Company believes an impairment of a security position is other than temporary, based on available quantitative and qualitative information as of the report date, the loss will be recognized within other income, net in the Company’s condensed statements of operations and a new cost basis in the investment is established.
Deferred Offering Costs	Deferred Offering Costs The Company capitalizes certain legal, professional, accounting, and other third-party fees that are directly associated with in-process equity issuances as deferred offering costs until such equity issuances are consummated. After consummation of the equity issuance, these costs are recorded as a reduction in the capitalized amount associated with the equity issuance. Should the equity issuance be abandoned, the deferred offering costs are expensed immediately as a charge to operating expenses in the statement of operations.
Stock-Based Compensation	Stock-Based Compensation The Company accounts for its stock-based compensation awards in accordance with ASC Topic 718, Compensation – Stock Compensation (ASC 718). ASC 718 requires all stock-based payments to employees, including grants of employee stock options, to be recognized in the statements of operations based on their fair values. The Company’s stock-based awards are subject only to service-based vesting conditions. The Company measures restricted common stock awards using the difference, if any, between the purchase price per share of the award and the fair value of the Company’s common stock at the date of the grant or modification. The Company estimates the fair value of its stock option awards using the Black-Scholes option pricing model, which requires the input of assumptions, including (i) the expected stock price volatility, (ii) the calculation of expected term of the award, (iii) the risk-free interest rate, and (iv) expected dividends. Volatility — Due to the Company’s limited operating history and a lack of company-specific historical and implied volatility data, the Company has based its estimate of expected volatility on the historical volatility of a group of similar publicly-traded companies. The Company believes that the companies in the group were most representative of the Company and had characteristics similar to its own, including stage of product development, a focus on the life sciences industry, and other economic and industry characteristics. Expected Term — The Company uses the simplified method to calculate the expected term, as it does not have sufficient historical exercise data to provide a reasonable basis upon which to estimate the expected term for options granted, and utilizes the contractual term for options granted. Risk-Free Interest Rate — The risk-free interest rate is based on a treasury instrument whose term is consistent with the expected life of the stock options. Expected Dividends — To date, the Company has not issued any dividends and does not expect to issue dividends over the life of the options and therefore has estimated the dividend yield to be zero. Subsequent to the closing of the Company’s IPO, the Company determines the fair market value of its common stock using the closing price of its common stock as reported on the Nasdaq Global Select Market. Prior to the closing of the Company’s IPO, there was no public market for the Company’s common stock, and the Company determined the fair value of the shares of its common stock underlying its share-based awards by considering a number of objective and subjective factors, including third-party valuations of the Company’s common stock, the valuation of comparable companies, the Company’s operating and financial performance, and general and industry-specific economic outlook, among other factors. The assumptions underlying these valuations represented management’s best estimate, with the assistance of a third-party valuation specialist, which involved inherent uncertainties and the application of management’s judgment. As a result, if the Company had used different assumptions or estimates, the fair value of the Company’s common stock and its stock-based compensation expense could have been materially different. Compensation expense related to awards is recognized on a straight-line basis by recognizing the grant date fair value over the associated service period of the award, which is generally the vesting term. Management evaluates its award grants and modifications and will adjust the fair value if any are determined to be spring-loaded. The Company accounts for forfeitures as they occur.
Net Loss Per Share	Net Loss Per Share The Company’s basic net loss per share attributable to common stockholders is calculated by dividing the net loss attributable to common stockholders by the weighted-average number of shares of common stock outstanding for the period. The diluted net loss per share attributable to common stockholders is computed by giving effect to all potential common stock equivalents outstanding for the period determined using the treasury stock method. For purposes of this calculation, convertible preferred stock and stock options to purchase common stock are considered to be common stock equivalents but have been excluded from the calculation of diluted net loss per share attributable to common stockholders as their effect is anti-dilutive. The weighted-average number of common shares used in the basic and diluted net loss per common shareholders calculations includes the weighted-average pre-funded warrants outstanding during the period as they are exercisable at any time for nominal cash consideration.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements From time to time, new accounting pronouncements are issued by the FASB or other standard setting bodies and adopted by the Company as of the specified effective date. Unless otherwise discussed, the Company believes the impact of recently issued standards that are not yet effective will not have a material impact on its financial position or results of operations upon adoption.

Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2024

Accounting Policies [Abstract]

Schedule of Cash and Cash Equivalents

The following table provides a reconciliation of cash and cash equivalents as reported in the statement of cash flows to the balance sheets (in thousands):




	March 31,		December 31,
	2024		2023
Cash	$	5,376	$	643
Cash equivalents	85,042		48,661
Total cash and cash equivalents	$	90,418	$	49,304

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following table sets forth the potential common shares excluded from the calculation of net loss per common share because their inclusion would be anti-dilutive:


	Three Months Ended
	March 31,
	2024	2023
Outstanding options	4,251,075	2,543,513
Unvested restricted stock awards	968,211	1,127,084

Total	5,219,286	3,670,597

Fair Value of Financial Instruments (Tables)

3 Months Ended

Mar. 31, 2024

Fair Value Disclosures [Abstract]

Schedule of Fair Value, Assets Measured on Recurring Basis

The following table presents financial instruments measured at fair value on a recurring basis based on the fair value hierarchy as of March 31, 2024 and December 31, 2023 (in thousands):




	March 31,		December 31,
	2024		2023
	Level 1
Assets
Cash equivalents
Money market funds	$	85,042	$	48,661

Schedule of Held-to-Maturity U.S. Treasury Bills

. The following table presents information about the Company’s investments in held-to-maturity U.S. Treasury bills as of each reported date (in thousands):

As of March 31, 2024

Balance Sheet Location

Original Maturities

Amortized
Cost

Estimated
Fair Value

Investments

between 3 and 12 months

248,147

248,050


		As of December 31, 2023
Balance Sheet Location	Original Maturities	Amortized Cost		Estimated Fair Value

Investments	between 3 and 12 months	$	187,263	$	187,293
Investments, noncurrent	greater than 1 year	2,482		2,486
Total		$	189,745	$	189,779

Accrued Liabilities (Tables)

3 Months Ended

Mar. 31, 2024

Payables and Accruals [Abstract]

Schedule of Accrued Liabilities

Accrued liabilities consisted of the following (in thousands):




	March 31,		December 31,
	2024		2023

Research and development expenses	$	12,857	$	7,122
Compensation and benefits	662		1,599
Professional fees and other	1,424		1,160
Total	$	14,943	$	9,881

Capital Stock (Tables)

3 Months Ended

Mar. 31, 2024

Equity [Abstract]

Schedule of Common Stock Authorized

As of March 31, 2024, the Company had reserved authorized shares of common stock for future issuance as follows:






Common stock options outstanding			4,251,075
Shares available for grant under the 2023 Plan			2,981,285
Shares available for grant under the ESPP			802,610
Pre-funded warrants issued and outstanding			549,755
Total			8,584,725

Stock-Based Compensation (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Options by Plan

As of March 31, 2024, the Company had the following balances by plan:


	Options Outstanding	Unvested RSAs	Shares Available for Grant
2023 Plan	3,322,685	—	2,981,285
2020 Plan	928,390	968,211	—
Total	4,251,075	968,211	2,981,285

Schedule of Stock-Based Compensation Reported in Statement of Operations

Total stock-based compensation expense reported in the statements of operations was allocated as follows (in thousands):


	Three Months Ended
	March 31,
		2024		2023
Research and development		$	965	$	335
General and administrative		1,226		414
Total		$	2,191	$	749

Nature of Business (Details) $ / shares in Units, $ in Thousands			3 Months Ended		14 Months Ended
	Feb. 14, 2023 USD ($) $ / shares shares	Feb. 01, 2023 $ / shares	Mar. 31, 2024 USD ($) $ / shares	Mar. 31, 2023 USD ($)	Mar. 31, 2024 USD ($) $ / shares	Dec. 31, 2023 USD ($) $ / shares
Class of Stock [Line Items]
Reverse stock split conversion ratio		0.0926
Common stock par value (in USD per share) \| $ / shares		$ 0.0001	$ 0.0001		$ 0.0001	$ 0.0001
Accumulated deficit			$ 156,216		$ 156,216	$ 124,708
Cash, cash equivalents, and investments			338,600		338,600
Net loss			31,508	$ 12,608
Net cash			$ 19,139	$ 12,775
Proceeds from issuance of equity					$ 498,800
IPO
Class of Stock [Line Items]
Shares issued (in shares) \| shares	13,800,000
Price per share (in USD per share) \| $ / shares	$ 16.00
Gross proceeds of sale of stock	$ 201,400
Over-Allotment Option
Class of Stock [Line Items]
Shares issued (in shares) \| shares	1,800,000

Summary of Significant Accounting Policies - Segment Information (Details)	3 Months Ended
	Mar. 31, 2024 segment
Accounting Policies [Abstract]
Number of operating segments	1

Summary of Significant Accounting Policies - Cash and Cash Equivalents (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Restricted cash	$ 0	$ 0
Cash	5,376,000	643,000
Cash equivalents	85,042,000	48,661,000
Total cash and cash equivalents	$ 90,418,000	$ 49,304,000

Summary of Significant Accounting Policies - Deferred Offering Costs (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023
Accounting Policies [Abstract]
Deferred offering costs	$ 0.3	$ 0.0

Summary of Significant Accounting Policies - Net Loss per Share (Details) - shares	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total (in shares)	5,219,286	3,670,597
Outstanding options
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total (in shares)	4,251,075	2,543,513
Unvested restricted stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total (in shares)	968,211	1,127,084

Fair Value of Financial Instruments - Assets Measured on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Level 1 \| Money market funds
Cash and Cash Equivalents [Line Items]
Cash equivalents	$ 85,042	$ 48,661

Fair Value of Financial Instruments - Balance Sheet Grouping (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Amortized Cost
Investments	$ 248,147	$ 187,263
Investments, noncurrent	0	2,482
Total	248,147	189,745
Estimated Fair Value
Investments		187,293
Investments, noncurrent		2,486
Total	$ 248,050	$ 189,779

Commitment and Contingencies (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Jul. 31, 2020
Other Commitments [Line Items]
Research and development	$ 30,754	$ 12,293
Mitsubishi Tanabe \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement
Other Commitments [Line Items]
Upfront fee			$ 1,000
Development milestone payments			9,000
First commercial milestone payments			155,000
Second commercial milestone payment			$ 10,000
Expiration period			10 years
Non-compete period			3 years
Research and development	0	$ 4,000
Proceeds received from milestones achieved	$ 9,000
Mitsubishi Tanabe \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Maximum
Other Commitments [Line Items]
Royalties percentage			10.00%
Termination period			180 days
Mitsubishi Tanabe \| Collaborative Arrangement, Transaction with Party to Collaborative Arrangement \| Minimum
Other Commitments [Line Items]
Termination period			90 days

Accrued Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Payables and Accruals [Abstract]
Research and development expenses	$ 12,857	$ 7,122
Compensation and benefits	662	1,599
Professional fees and other	1,424	1,160
Accrued liabilities	$ 14,943	$ 9,881

Capital Stock - Schedule of Common Stock (Details)	Mar. 31, 2024 shares
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	8,584,725
Pre-Funded Warrant
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	549,755
Stock Options
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	4,251,075
Employee Stock
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	802,610
2023 Plan
Class of Stock [Line Items]
Common stock shares reserved for future issuance (in shares)	2,981,285

Capital Stock - Narrative (Details) - USD ($)			1 Months Ended			3 Months Ended
Capital Stock - Narrative (Details) - USD ($)	Feb. 07, 2024	Feb. 14, 2023	Jun. 30, 2022	Jan. 31, 2022	Feb. 28, 2021	Mar. 31, 2023	Apr. 30, 2021	Mar. 31, 2024	Mar. 21, 2024	Dec. 31, 2023	Feb. 28, 2023
Class of Stock [Line Items]
Common stock shares authorized (in shares)								500,000,000		500,000,000	500,000,000
Convertible preferred stock, shares authorized (in shares)											50,000,000
Sale of warrants (in shares)	549,755
Price per share of warrants sold (in USD per share)	$ 13.499
Exercise price (in USD per share)	$ 0.001
Tranche 1
Class of Stock [Line Items]
Ownership limitation percentage	4.99%
Tranche 2
Class of Stock [Line Items]
Ownership limitation percentage	9.99%
Tranche 3
Class of Stock [Line Items]
Ownership limitation percentage	19.99%
Common Stock
Class of Stock [Line Items]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)						20,637,415
Series A Convertible Preferred Stock
Class of Stock [Line Items]
Issuance of convertible preferred stock, net of issuance costs (in shares)							50,311,827
Purchase price temporary equity (in USD per share)				$ 0.477			$ 0.477
Issuance of convertible preferred stock, net of issuance costs				$ 12,000,000			$ 23,800,000
Issuance of Series A convertible preferred stock (in shares)				25,151,957	10,868,432
Conversion of preferred stock to common stock upon closing initial public offering (in shares)						86,332,216
Series B Convertible Preferred Stock
Class of Stock [Line Items]
Issuance of convertible preferred stock, net of issuance costs (in shares)			136,510,868
Purchase price temporary equity (in USD per share)			$ 0.8644
Issuance of convertible preferred stock, net of issuance costs			$ 117,700,000
Conversion of preferred stock to common stock upon closing initial public offering (in shares)						136,510,868
IPO
Class of Stock [Line Items]
Shares issued (in shares)		13,800,000
Price per share (in USD per share)		$ 16.00
Gross proceeds of sale of stock		$ 201,400,000
IPO \| Common Stock
Class of Stock [Line Items]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)		20,637,415
IPO \| Series A Convertible Preferred Stock
Class of Stock [Line Items]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)		86,332,216
IPO \| Series B Convertible Preferred Stock
Class of Stock [Line Items]
Conversion of preferred stock to common stock upon closing initial public offering (in shares)		136,510,868
Private Placement
Class of Stock [Line Items]
Shares issued (in shares)	8,339,169
Price per share (in USD per share)	$ 13.50
Gross proceeds of sale of stock	$ 116,100,000
At the Market \| Maximum
Class of Stock [Line Items]
Maximum aggregate offering price									$ 100,000,000

Stock-Based Compensation - Narrative (Details) - shares		1 Months Ended	3 Months Ended
Stock-Based Compensation - Narrative (Details) - shares	Jul. 01, 2023	Feb. 28, 2023	Mar. 31, 2024
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares available for grant (in shares)			2,981,285
Shares available for grant under the 2023 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares authorized (in shares)		4,650,000
Percent of outstanding shares		4.00%
Number of additional shares allowed under the plan (in shares)		100,000,000
Shares available for grant (in shares)			2,981,285
Employee Stock \| Shares available for grant under the ESPP
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Shares authorized (in shares)		400,000
Percent of outstanding shares		1.00%
Number of additional shares allowed under the plan (in shares)		15,000,000
Purchase price of common stock, percentage	85.00%
Offering period		6 months
Shares available for grant (in shares)			802,610
Cumulative shares issued (in shares)			(8,729)

Stock-Based Compensation - Options by Plan (Details)	Mar. 31, 2024 shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding options (in shares)	4,251,075
Shares available for grant (in shares)	2,981,285
Unvested restricted stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSAs issued (in shares)	968,211
2023 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding options (in shares)	3,322,685
Shares available for grant (in shares)	2,981,285
2023 Plan \| Unvested restricted stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSAs issued (in shares)	0
2020 Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Outstanding options (in shares)	928,390
Shares available for grant (in shares)	0
2020 Plan \| Unvested restricted stock awards
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
RSAs issued (in shares)	968,211

Stock-Based Compensation - Reported in Statements of Operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	$ 2,191	$ 749
Research and development
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	965	335
General and administrative
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Total	$ 1,226	$ 414

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