MX Magnachip Semiconductor Corp

Exhibit 99.1

Magnachip Reports Results for Fourth Quarter and Full-Year 2024

-Announces Transition to Become Pure-Play Power Company; Explores All Strategic Options for Display Business -

Q4 Results Summary

2024 Highlights

SEOUL, South Korea, March 12, 2025—Magnachip Semiconductor Corporation (NYSE: MX) (“Magnachip” or the “Company”) today announced financial results for the fourth quarter and full-year 2024.

YJ Kim, Magnachip’s CEO, said, “Our Q4 revenue of $63 million was up 24% year-over-year, and gross profit margin of 25.2% was up 2.5 percentage points as compared to a year ago. For the year, Standard Products business revenue increased 13% year-over-year, in line with our guidance for double-digit growth that we provided at the beginning of 2024.”

YJ Kim added, “Our revenue and gross margin results represented a step in the right direction, but our utmost short-term goal is a return to profitability. To achieve this goal, Magnachip announced today its transition to become a pure-play Power company, and we also announced that we are exploring all strategic options for the Display business, which will be classified as discontinued operations when the Company reports Q1 results in May.”

YJ Kim commented, “By focusing on the Power business, Magnachip currently expects to achieve a quarterly Adjusted EBITDA^* breakeven by the end of Q4 2025 from continuing operations, followed by positive adjusted operating income^* in 2026, and positive adjusted free cash flow^* in 2027. Each of these targets will act as milestones towards achieving a goal in 3 years to reach a $300 million annual revenue run-rate with a 30% gross profit margin target. We call this our 3-3-3 strategy.”

Q4 and 2024 Financial Highlights

Q1 and Full-year 2025 Financial Guidance

Beginning Q1 2025, the Company will become a pure-play Power company, with the display business classified as discontinued operations and reported separately from continuing operations, which will include PAS and Power IC business lines. While actual results may vary, Magnachip currently expects the following:

For Q1 2025:

For the full-year 2025, which will set the stage to become a pure-play Power company, we currently expect:

Q4 2024 Earnings Conference Call

Magnachip will host a corresponding conference call at 8:30 a.m. ET on Wednesday, March 12, 2025, to discuss its financial results. In advance of the conference call, all participants must use the following link to complete the online registration process. Upon registering, each participant will receive access details for this event including the dial-in numbers, a PIN number, and an e-mail with detailed instructions to join the conference call. A live and archived webcast of the conference call and a copy of earnings release will be accessible from the ‘Investors’ section of the Company’s website at www.magnachip.com.

Online registration: https://register.vevent.com/register/BIa6cd0a845f2f49d6b9ae30f6b3ef47d2

Sell-Side Analyst Briefing and Webcast

Following the conference call, Magnachip will hold an in-person briefing for sell-side analysts in New York City at 10:15 a.m. ET on Wednesday, March 12, 2025. The session will be led by Chief Executive Officer YJ Kim, with Chief Financial Officer Shinyoung Park and other members of management also in attendance. The in person briefing is open to all sell-side analysts and will be webcast live. For further details, please contact steven@blueshirtgroup.co.

To join the Analyst Briefing webcast, all participants must use the following link to complete the online registration process in advance. Upon registering, each participant will receive access details, including the dial-in numbers, a PIN number, and an email with detailed instructions to join the call.

Online registration: https://register.vevent.com/register/BIa603d2c4ff554592b500a20e6e1500d7

Safe Harbor for Forward-Looking Statements

Information in this presentation regarding Magnachip’s forecasts, business outlook, expectations and beliefs are forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995 that involve risks and uncertainties. All forward-looking statements included or incorporated by reference in this presentation, including expectations about estimated historical or future operating results and financial performance, outlook and business plans, including first quarter and full year 2025 revenue and gross profit margin expectations and longer term annualized revenue and gross profit margin targets, future growth and revenue opportunities from new and existing products and customers, the timing and extent of future revenue contributions by our products and businesses, and the impact of

market conditions associated with inflation and higher interest rates, geopolitical conflicts between Russia-Ukraine and between Israel-Hamas, sustained military action and conflict in the Red Sea, and trade tensions between the U.S. and China on Magnachip’s first quarter and full year 2025 revenue and future operating results, and the timing and extent of future revenue contributions by our products and businesses, are based upon information available to Magnachip as of the date of this presentation and the accompanying press release, which may change, and we assume no obligation to update any such forward-looking statements. These statements are not guarantees of future performance and actual results could differ materially from our current expectations. Factors that could cause or contribute to such differences include, among others: the impact of changes in macroeconomic conditions, including those caused by or related to inflation, potential recessions or other deteriorations, economic instability or civil unrest; the geopolitical conflicts between Russia-Ukraine and between Israel-Hamas, sustained military action and conflict in the Red Sea, and trade tensions between the U.S., China and other countries, including the impact of tariff actions; manufacturing capacity constraints or supply chain disruptions that may impact our ability to deliver our products or affect the price of components, which may lead to an increase in our costs and impact demand for our products from customers who are similarly affected by such capacity constraints or disruptions; the impact of competitive products and pricing; timely acceptance of our designs by customers; timely introduction of new products and technologies; our ability to ramp new products into volume production; industry-wide shifts in supply and demand for semiconductor products; overcapacity within the industry or at Magnachip; effective and cost-efficient utilization of manufacturing capacity; financial stability in foreign markets and the impact of foreign exchange rates; unanticipated costs and expenses or the inability to identify expenses that can be eliminated; compliance with U.S. and international trade and export laws and regulations by us, our customers and our distributors; change to or ratification of local or international laws and regulations, including those related to environment, health and safety; public health issues; other business interruptions that could disrupt supply or delivery of, or demand for, Magnachip’s products; and other risks detailed from time to time in Magnachip’s filings with the U.S. Securities and Exchange Commission (the “SEC”), including our Form 10-K filed on March 8, 2024, and subsequent registration statements, amendments or other reports that we may file from time to time with the SEC and/or make available on our website. Magnachip assumes no obligation and does not intend to update the forward-looking statements provided, whether as a result of new information, future events or otherwise.

About Magnachip Semiconductor

Magnachip is a designer and manufacturer of analog and mixed-signal semiconductor platform solutions for communication, Internet of Things (“IoT”), consumer, computing, industrial and automotive applications. The Company provides a broad range of standard products to customers worldwide. Magnachip, with about 45 years of operating history, owns a portfolio of approximately 1,000 registered patents and pending applications, and has extensive engineering, design, and manufacturing process expertise. For more information, please visit www.magnachip.com. Information on or accessible through Magnachip’s website is not a part of, and is not incorporated into, this release.

CONTACT:

Steven C. Pelayo, CFA

The Blueshirt Group

Tel. +1 (360) 808-5154

steven@blueshirtgroup.co

MAGNACHIP SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF OPERATIONS

(In thousands of U.S. dollars, except share data)

(Unaudited)

MAGNACHIP SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(In thousands of U.S. dollars, except share data)

(Unaudited)

MAGNACHIP SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(In thousands of U.S. dollars)

(Unaudited)

MAGNACHIP SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

RECONCILIATION OF OPERATING LOSS TO ADJUSTED OPERATING LOSS

(In thousands of U.S. dollars)

(Unaudited)

We present Adjusted Operating Loss as a supplemental measure of our performance. We define Adjusted Operating Loss for the periods indicated as operating loss adjusted to exclude (i) Equity-based compensation expense, (ii) Impairment and other charges and (iii) Early termination charges.

For the year ended December 31, 2024, we recorded in our consolidated statement of operations $4,637 thousand of impairment loss primarily related to the tangible assets associated with our Display business. During the same period, we also recorded $2,017 thousand of one-time cumulative financial impact in connection with certain employee benefits.

For the year ended December 31, 2023, we recorded in our consolidated statement of operations $8,449 thousand of termination related charges in connection with the voluntary resignation program that we offered to certain employees during the first quarter of 2023. During the same period, we also recorded $802 thousand of one-time employee incentives.

MAGNACHIP SEMICONDUCTOR CORPORATION AND SUBSIDIARIES

RECONCILIATION OF NET LOSS TO ADJUSTED EBITDA AND ADJUSTED NET INCOME (LOSS)

(In thousands of U.S. dollars, except share data)

(Unaudited)

We present Adjusted EBITDA and Adjusted Net Income (Loss) as supplemental measures of our performance. We define Adjusted EBITDA for the periods indicated as EBITDA (as defined below), adjusted to exclude (i) Equity-based compensation expense, (ii) Foreign currency loss (gain), net, (iii) Derivative valuation loss (gain), net, (iv) Impairment and other charges and (v) Early termination charges. EBITDA for the periods indicated is defined as net loss before interest income, interest expense, income tax expense (benefit), net and depreciation and amortization.

We prepare Adjusted Net Income (Loss) by adjusting net loss to eliminate the impact of a number of non-cash expenses and other items that may be either one time or recurring that we do not consider to be indicative of our core ongoing operating performance. We believe that Adjusted Net Income (Loss) is particularly useful because it reflects the impact of our asset base and capital structure on our operating performance. We define Adjusted Net Income (Loss) for the periods as net loss, adjusted to exclude (i) Equity-based compensation expense, (ii) Foreign currency loss (gain), net, (iii) Derivative valuation loss (gain), net, (iv) Impairment and other charges, (v) Early termination charges and (vi) Income tax effect on non-GAAP adjustments.

For the year ended December 31, 2024, we recorded in our consolidated statement of operations $4,637 thousand of impairment loss primarily related to the tangible assets associated with our Display business. During the same period, we also recorded $2,017 thousand of one-time cumulative financial impact in connection with certain employee benefits.

For the year ended December 31, 2023, we recorded in our consolidated statement of operations $8,449 thousand of termination related charges in connection with the voluntary resignation program that we offered to certain employees during the first quarter of 2023. During the same period, we also recorded $802 thousand of one-time employee incentives.