STIR Stag Industrial Common Stock

        As of December 31, 2010, our weighted average in-place remaining lease term across our portfolio was approximately 5.9 years. The following table sets forth a summary schedule of lease expirations for leases in place as of December 31, 2010, plus available space, for each of the five calendar years beginning with 2011 and thereafter in our portfolio. The information set forth in the table assumes that tenants exercise no renewal options and no early termination rights.

Recent Developments

Acquisition Activity

        STAG GI has entered into purchase and sale agreements for the purchase of two industrial properties with a total of 536,550 square feet, which represent an aggregate purchase price for both properties of $24.9 million. We are in various stages of due diligence and underwriting as part of our evaluations of these two potential acquisitions, and each is subject to significant outstanding conditions.

Leasing Activity

        In addition, of the leases representing 1,041,705 square feet that were originally expiring in 2011, we executed two early renewals in 2010 representing 379,794 square feet of space and, in the first quarter of 2011, have renewed an additional 379,180 square feet of space. Including those leases, we have now renewed 73% of the square footage and 54% of the annualized rent that was expiring in 2011.

        We also have leased 65,182 square feet of vacant space in the first quarter of 2011, at an average rental rate of $2.50 per square foot, initially equating to $162,955 of annualized rent (representing an increase of approximately $98,000 of annualized rent from the previous leases). In addition, we have leased a total of 78,266 square feet to two existing tenants who have expanded into vacant space in their current buildings on a short term and month to month basis.

Financing Activity

        We have executed a loan modification, which is being held in escrow and is subject to customary closing conditions, to extend the maturity of our loan from Anglo Irish Bank Corporation Limited ("Anglo Master Loan (Fund III)"), which debt is due in 2012, to October 2013.

8

Table of Contents

Market Overview

         Unless otherwise indicated, all information contained in this Market Overview section is derived from market materials prepared by CBRE-EA as of February 11, 2011, and the projections and beliefs of CBRE-EA stated herein are as of that date.

        As of December 31, 2010, the overall U.S. industrial market consisted of approximately 257,000 buildings with 13.8 billion square feet of space. In terms of net rentable area ("NRA"), warehouse/distribution facilities constitute the majority (66.6%) of this space followed by manufacturing (20.6%) and flex/office (which includes research and development) (10.5%). Unclassified buildings (industrial facilities such as sewage treatment centers and airport hangars that are not amenable to private real estate investment) represent the remaining 2.3%.

Source: CBRE-EA Industrial Peer Select, Spring 2011.

        The single-tenant industrial sector offers investors the opportunity to receive stable income from leases to a variety of firms across the spectrum of industrial sub-property types, and single-tenant industrial buildings are more likely to provide their owners with less volatile cash flows after expenses, as they generally do not require the same degree of tenant and capital improvement expenditures that are required on an ongoing basis to lease multi-tenanted space or other classes of commercial property.

        Within the context of the broader real estate market, industrial property, including our targeted asset class, has exhibited a number of favorable investment characteristics:

•

According to the National Council of Real Estate Investment Fidicuaries Property Index, industrial property has generally outperformed commercial property as a whole on a total return basis over the long term, by generating high and stable cash-flow yields.



•

The current market environment provides an opportunity for well-capitalized investors to acquire industrial assets with strong cash flows at prices significantly discounted from levels of a few years ago due to the recent capital market dislocation on commercial real estate values.



•

Industrial property fundamentals are expected to gradually improve as new supply remains low, the absorption rate increases and availabilities decrease over the next few years.



•

Over the recent past, the Class B warehouse market has demonstrated a relatively higher degree of stability in terms of occupancy compared with newer and larger Class A space. Despite these market fundamentals, Class B space is relatively consistently priced at a discount to Class A space.



•

Over the past 20 years, industrial properties in secondary markets on average have generated a superior economic rent growth with slightly lower volatility than their primary market counterparts.

9

Table of Contents

Summary Risk Factors

        An investment in our common stock involves material risks. You should consider carefully the risks described below and under "Risk Factors" before purchasing shares of our common stock in this offering:

•

Our investments are concentrated in the industrial real estate sector, and we would be adversely affected by a downturn in that sector.



•

Our growth will depend upon our ability to acquire properties successfully. We may be unable to consummate acquisitions on advantageous terms, and acquisitions may not perform as we expect.



•

We depend on key personnel and the loss of their full service could adversely affect us.



•

Our officers and certain directors may have conflicting duties because they have a duty both to us and to the funds that will retain properties not contributed to us.



•

We could be adversely affected if we fail to have access to capital on favorable terms.



•

We have not obtained third-party property appraisals of the properties to be contributed to us in our formation transactions or fairness opinions in connection with our formation transactions. As a result, the consideration for these properties in our formation transactions may exceed their fair market value.



•

We depend on tenants for revenue. Defaults by our tenants, as a result of bankruptcy or otherwise, could adversely affect us.



•

We may be unable to renew or replace expiring leases or lease empty space on favorable terms or at all.



•

Uninsured losses and contingent or unknown liabilities with respect to our properties, including environmentally hazardous conditions, could adversely affect us.



•

Our charter and bylaws do not limit the amount or percentage of indebtedness that we may incur, and we could be adversely affected if we are unable to make required payments on our indebtedness, comply with other covenants in our indebtedness or refinance our indebtedness at maturity on favorable terms.



•

Our accounting predecessor has experienced historical net losses and accumulated deficits after depreciation and we may experience future losses.



•

We may not be able to make distributions at expected levels or at all.



•

Our qualification as a REIT will depend on our satisfaction of numerous requirements under highly technical and complex provisions of the Code, and our failure so to qualify could adversely affect us, including our ability to make distributions.



•

Investors in this offering will experience an immediate and substantial dilution in the pro forma net tangible book value of our common stock equal to $9.46 per share.

Debt Financing and Liquidity

        As of December 31, 2010, on a pro forma basis, we had mortgage debt outstanding with an estimated aggregate balance of approximately $250.9 million at a weighted average annual interest rate of 5.55%. All of this debt will initially bear interest at a fixed rate, $146.8 million of which as a result of interest rate swaps. This debt will be comprised of a $135.8 million loan maturing in 2012, a $95.6 million loan maturing in 2018 and an $8.5 million loan maturing in 2027, as well as borrowings in the amount of approximately $11.0 million under a $100 million credit facility with an initial three-year term to maturity. See "Business—Description of Certain Debt" for more information about such debt. We have executed a loan modification, which is being held in escrow and is subject to customary closing conditions, to extend the maturity of our debt due in 2012 to October 2013. The pro forma debt yield on this instrument is 16.12%.

10

Table of Contents

        We have executed a loan agreement with several financial institutions establishing a $100 million secured corporate revolving credit facility (subject to increase to $200 million under certain circumstances). The credit facility is being held in escrow and will be available upon the closing of this offering and satisfaction of other customary closing conditions. In addition, in connection with our formation transactions, we will be assuming an existing secured acquisition credit facility from STAG GI that currently has $30.4 million of borrowing capacity and a commitment letter for an additional $65 million secured acquisition credit facility.

        Upon completion of this offering and after the debt paydowns discussed under "Use of Proceeds" and the approximately $11.0 million borrowing described above, we expect to have approximately $36.0 million in credit facility capacity immediately available to us under the $100 million credit facility (with up to $64.4 million available upon the satisfaction of certain lender conditions) to fund working capital and property acquisitions and to execute our business strategy.

Our Formation Transactions and Structure

Background

        We have deployed approximately $1.4 billion through four private equity real estate funds, SCP Green, LLC ("Fund I"), STAG Investments II, LLC ("Fund II"), STAG Investments III, LLC ("Fund III") and STAG Investments IV, LLC ("Fund IV"), and one joint venture, STAG GI. We were formed to acquire the existing assets and operations of our predecessor business.

        Our senior management team consists of Mr. Butcher, the Chairman of our board of directors and our Chief Executive Officer and President, Gregory W. Sullivan, our Chief Financial Officer, Executive Vice President and Treasurer, Stephen C. Mecke, our Chief Operating Officer and Executive Vice President, Kathryn Arnone, our Executive Vice President, General Counsel and Secretary, and David G. King, our Executive Vice President and Director of Real Estate Operations. They have each led or helped manage private and public real estate companies and funds, including STAG, AMB Property Corp., Trizec Hahn Corporation, Meditrust Corporation and LaQuinta Corporation.

Formation Transactions

        Prior to or concurrent with the completion of this offering, we will engage in the following formation transactions, which are designed to consolidate the ownership of our property portfolio under our operating partnership and its subsidiaries, consolidate our acquisition and asset management businesses into a subsidiary of our operating partnership and enable us to qualify as a REIT for U.S. federal income tax purposes commencing with the taxable year ending December 31, 2011:

•

Pursuant to separate contribution agreements, our operating partnership will, directly or indirectly through its wholly-owned subsidiaries, acquire a 100% equity interest in the entities that own our properties in exchange for common units. Those equity interests will be acquired in exchange for 7,551,379 common units, representing 34.9% of the total number of shares of our common stock outstanding on a fully diluted basis, as set forth below:



•

Fund III will contribute 100% of the equity interests in the entities owning 57 of its properties to our operating partnership in exchange for 230,769 common units;



•

Fund IV will contribute 100% of the equity interests in the entities owning all 19 of its properties to our operating partnership in exchange for 1,754,521 common units; and



•

STAG GI will contribute 100% of the equity interests in the entities owning all 15 of its properties to our operating partnership in exchange for 5,566,089 common units.



•

Pursuant to separate contribution agreements, the members of the management company will contribute their interests in the management company to our operating partnership in exchange for 38,621 common units, representing 0.2% of the total number of shares of our common stock outstanding on a fully diluted basis.

11

Table of Contents

•

In connection with the foregoing transactions, we will directly or indirectly assume approximately $250.9 million in principal amount of mortgage debt (together with all related accrued and unpaid interest) secured by certain of our properties that will remain outstanding.



•

With the proceeds of this offering, based on December 31, 2010 balances, we will repay approximately $167.7 million in indebtedness (including principal and related accrued interest). See "Use of Proceeds."



•

We will close on a $100 million secured corporate revolving credit facility (subject to increase to $200 million under certain circumstances) and borrow approximately $11.0 million thereunder contemporaneously with the closing of this offering.



•

We will enter into a refinancing of our debt due in 2012 to extend the maturity date to October 2013 that we anticipate will close contemporaneously with the closing of this offering.



•

Our executive officers will enter into employment agreements with us.



•

We will issue 200,441 LTIP units in our operating partnership to our executive officers and independent directors and 80,809 shares of restricted common stock to our employees pursuant to our 2011 Equity Incentive Plan, representing in the aggregate 1.3% of the total number of shares of our common stock outstanding on a fully-diluted basis.

        We will not enter into any tax protection agreements in connection with our formation transactions.

Services Agreements and Option Properties

        Following completion of our formation transactions, Fund II will continue to operate as a private, fully-invested fund and will retain ownership of its 86 properties, with approximately 13.1 million rentable square feet. We will enter into a services agreement with Fund II on terms we believe to be customary, pursuant to which we will manage its properties in return for an annual asset management fee based on the equity investment in such assets, which will initially equal 0.94% of the equity investment and may increase up to 1.25% of the equity investment to the extent assets are sold and the total remaining equity investment is reduced.

        Following completion of our formation transactions, Fund III will retain ownership of three properties with approximately 890,891 rentable square feet that are vacant and that are acquisition opportunities for us (the "Option Properties"). Following completion of our formation transactions, we will enter into a services agreement with Fund III pursuant to which we will manage the Option Properties for an annual fee of $30,000 per property and provide the limited administrative services (including preparation of reports for the Fund III lender and investors, bookkeeping, tax and accounting services) Fund III will require until its liquidation for an annual fee of $20,000. Upon approval of our independent directors, we will have the right to acquire any of the Option Properties individually.

        In addition, we will enter into a services agreement with Fund IV pursuant to which we will provide the limited administrative services (including preparation of reports for the Fund IV investors, bookkeeping, tax and accounting services) Fund IV will require until its liquidation for an annual fee of $20,000. STAG GI will not require administrative services from us or our affiliates following completion of our formation transactions.

12

Table of Contents

        Following completion of our formation transactions, Fund II, Fund III, Fund IV and STAG GI will make no additional property acquisitions, and our senior management team will devote substantially all of its business time to our business.

Corporate Structure

        The chart below reflects our organization immediately following completion of our formation transactions and this offering.

(1)

Upon completion of this offering, we will grant 80,809, shares of restricted common stock, or 0.6% of our outstanding common stock, pursuant to our 2011 Equity Incentive Plan.

(2)

Includes our executive officers' investments in Fund III, Fund IV and STAG GI and their residual interests in Fund III, Fund IV and STAG GI. Solely for purposes of this chart, we calculated our executive officers' residual interests assuming Fund III, Fund IV and STAG GI are liquidated on April 13, 2011 at $13.00 per share, the initial public offering price, and made certain other assumptions. We cannot estimate the actual timing of the liquidations of Fund III, Fund IV and STAG GI or the value of any distributions at the time of the liquidations. "See—Benefits to Related Parties—Formation Transactions" below.

(3)

Excludes common units in which a director or executive officer has no pecuniary interest but that are owned by entities that a director or executive officer may directly or indirectly control. Includes LTIP units, as if LTIP units were common units, that will be issued upon closing of this offering to our executive officers and independent directors pursuant to our 2011 Equity Incentive Plan.

13

Table of Contents

(4)

Ownership is through Fund III, Fund IV and/or STAG GI.

Benefits to Related Parties

        Upon completion of our formation transactions and this offering, our directors and executive officers and their affiliates will receive material financial and other benefits, as shown below. For a more detailed discussion of these benefits see "Management," "Certain Relationships and Related Transactions" and "Structure and Formation of Our Company—Benefits of Our Formation Transactions and this Offering to Certain Parties."

        Formation Transactions.     Fund III, Fund IV, STAG GI and the members of the management company will receive 7,590,000 common units as a result of their contribution to us of the entities owning our properties and the management company, as described above under "—Our Formation Transactions and Structure—Formation Transactions." In addition, upon completion of our formation transactions, we will repay or assume indebtedness secured by our properties and unsecured indebtedness, as described under "—Our Formation Transactions and Structure—Formation Transactions" and "Use of Proceeds."

        After the expiration of the lock-up period, Fund III, Fund IV and STAG GI may distribute its common units to its members in accordance with the fund's operating agreement. In addition to their invested equity, certain members of Fund III, Fund IV and STAG GI, including certain of our officers, employees and directors, have residual interests, or contingent profit interests, in Fund III, Fund IV and STAG GI. As a result, they may receive distributions related to these residual interests if there are sufficient proceeds after return of capital and preferred returns to themselves and the other equity investors in Fund III, Fund IV and STAG GI. In all cases where there is a residual distribution, the higher the share price of our common stock at the time a fund is liquidated, the greater the portion of the common units the fund will distribute to the holders of the residual interests.

        The number of common units being issued in our formation transactions is fixed so that residual interests will not, in any manner, require us to issue additional common units or shares of common stock or otherwise dilute investors in this offering. In addition, because the value of the residual interests depends on the value of our common stock, not on the value of certain properties or portfolios individually, such residual interests align the interests of the holders of residual interests with the interests of our company and shareholders. See "Structure and Formation of Our Company—Benefits of Our Formation Transactions and the Offering to Certain Parties."

        The table below sets forth a list of what individual directors and executive officers of our company will receive as a result of the contributions.

14

Table of Contents

        Voting Agreement.     An affiliate of GI Partners will receive rights to designate two nominees for election to our board of directors, and Fund III, Fund IV, STAG GI and the contributors of the management company will enter into a voting agreement pursuant to which they will vote any shares of common stock that they own in favor of the election of the two nominees at each annual meeting of shareholders.

        Services Agreements and Option Agreement.     We will enter into services agreements with each of Fund II, Fund III and Fund IV and an option to purchase agreement with Fund III with respect to the Option Properties. See "—Our Formation Transactions and Structure—Services Agreements and Option Properties."

        Registration Rights Agreement.     We have agreed to file a shelf registration statement with the SEC covering the resale of the shares of common stock issued or issuable in exchange for common units issued in our formation transactions. We have also agreed to provide rights to these holders of common units to demand additional registration statement filings.

        Employment Agreements.     Messrs. Butcher, Sullivan, Mecke and King and Ms. Arnone will enter into employment agreements with us providing for salary, discretionary bonus and other benefits.

        Equity Incentive Plan Grants.     We will issue 200,441 LTIP units to our executive officers and independent directors and 80,809 shares of restricted common stock to our employees pursuant to our 2011 Equity Incentive Plan, representing in the aggregate 1.3% of the total number of shares of our common stock outstanding on a fully-diluted basis.

        Indemnification Agreements.     Our bylaws provide that we will indemnify our directors, executive officers and employees to the fullest extent permitted by Maryland law. We also intend to enter into indemnification agreements with our directors and executive officers. See "Management—Limitation on Liabilities and Indemnification of Directors and Officers."

Conflicts of Interest

        The executive officers for each of the managers of Fund II, Fund III, Fund IV and STAG GI consist of a number of persons who serve as executive officers in similar positions in our company, specifically: Messrs. Butcher, Sullivan, Mecke and King and Ms. Arnone. Also, Mr. Butcher, who is a member of our board of directors, also serves on the board of managers and/or management committees of the managers of Fund II, Fund III and Fund IV, and is a member of the management board of STAG GI. F. Alexander Fraser, one of two of our directors selected by GI Partners, is also a member of the management board of STAG GI and serves as a Director at GI Partners, LLC, which is an affiliate of GI Partners and STAG GI. Our executive officers and certain of our directors may have conflicting duties because they have a duty to both us and to Fund II (which will retain ownership of its properties and continue as a private, fully-invested fund until liquidated), Fund III (which will retain ownership of the Option Properties), Fund IV and STAG GI. Upon completion of our formation transactions, all of these entities will be fully invested and, as a result, will not be making any additional investments in income properties. It is possible that the executive officers' and board members' fiduciary duty to and interests in Fund II, Fund III, Fund IV, STAG GI and GI Partners, LLC, including, without limitation, their interests in Fund II and the Option Properties, will conflict with what will be in the best interests of our company.

        We did not conduct arm's-length negotiations with respect to the terms and structuring of our formation transactions, resulting in the principals of the management company having the ability to

15

Table of Contents

influence the type and level of benefits that they and our other affiliates will receive. We have not obtained third-party appraisals of the properties to be contributed to us in our formation transactions or fairness opinions in connection with our formation transactions.

        Additional conflicts of interest could arise in the future as a result of the relationships between us and our affiliates, on the one hand, and our operating partnership or any partner thereof on the other. Our directors and officers have duties to our company under applicable Maryland law in connection with their management of our company. At the same time, we, as the indirect general partner of our operating partnership, have duties to our operating partnership and to its limited partners in connection with the management of our operating partnership under Delaware law as modified by our operating partnership agreement. Our duties, as the indirect general partner of our operating partnership, may come into conflict with the duties of our directors and officers to our company.

        We plan to adopt policies to reduce potential conflicts of interest. To the extent that specific matters involving us arise where Mr. Fraser may have conflicting duties, we will require that our disinterested directors approve those matters. More generally, our policies will provide that any transaction involving us in which any of our directors, officers or employees has a material interest must be approved by a vote of a majority of our disinterested directors. However, we cannot assure you that these policies will be successful in eliminating the influence of these conflicts. See "Policies with Respect to Certain Activities—Conflicts of Interest Policies."

Tax Status

        We will elect to be taxed as a REIT under the Code commencing with our taxable year ending December 31, 2011. As a REIT, we generally will not be subject to U.S. federal income tax on income that we distribute currently to our shareholders. Under the Code, REITs are subject to numerous organizational and operational requirements, including the distribution requirement described below. If we fail to qualify for taxation as a REIT in any year, our income will be taxed at regular corporate rates, we will not be allowed a deduction for dividends to our shareholders in computing our taxable income and we may be precluded from qualifying for treatment as a REIT for the four-year period following the year of our failure to qualify. Even if we qualify as a REIT for U.S. federal income tax purposes, we may still be subject to state and local taxes on our income and property and to U.S. federal income and excise taxes on our undistributed income.

Distribution Policy

        We are a newly formed company that has not commenced operations, and as a result, we have not paid any distributions as of the date of this prospectus. U.S. federal income tax law generally requires that a REIT distribute annually at least 90% of its REIT taxable income, determined without regard to the deduction for dividends paid and excluding any net capital gains. To satisfy the requirements to qualify as a REIT and generally not be subject to U.S. federal income tax, we intend to make quarterly distributions of all or substantially all of our net income to holders of our common shares out of assets legally available therefor. We intend to pay a pro rata initial distribution with respect to the period commencing on the completion of this offering and ending at the last day of the then-current fiscal quarter, based on a distribution of $0.256 per share for a full quarter. On an annualized basis, this would be $1.024 per share, or an annual distribution rate of approximately 7.9%, based on the initial public offering price. We estimate this initial annual distribution rate will represent approximately 103.6% of estimated cash available for distribution to our common shareholders for the 12 months ending December 31, 2011. We intend to maintain our initial distribution rate for the 12-month period following completion of this offering unless our actual results of operations, economic conditions or other factors differ materially from the assumptions used in our estimate. Any future distributions we make will be at the discretion of our board of directors and will depend upon our earnings and financial condition, maintenance of REIT qualification, the applicable provisions of the Maryland General Corporation Law ("MGCL") and such other factors as our board may determine in its sole

16

Table of Contents

discretion. We anticipate that our estimated cash available for distribution will exceed the annual distribution requirements applicable to REITs. However, under some circumstances, we may be required to pay distributions in excess of cash available for distribution in order to meet these distribution requirements and may need to use the proceeds from future equity and debt offerings, sell assets or borrow funds to make some distributions. We have no intention to use the net proceeds of this offering to make distributions nor do we intend to make distributions using shares of common stock. We cannot assure you that our distribution policy will not change in the future.

Restrictions on Ownership and Transfer of Stock

        Due to limitations on the concentration of ownership of a REIT imposed by the Code, not more than 50% of the value of the outstanding shares of beneficial ownership of a REIT may be owned, directly or indirectly, by five or fewer individuals (as defined by the Code to include certain entities) during the last half of a taxable year (other than the first year for which an election to be a REIT has been made). As a result, our charter provides that, subject to certain exceptions, no person may beneficially own, or be deemed to own by virtue of the attribution provisions of the Code, either more than 9.8% in value or in number of shares, whichever is more restrictive, of our outstanding shares of capital stock, or more than 9.8% in value or in number of shares, whichever is more restrictive, of our outstanding common stock. Our board of directors may, in its discretion, exempt a person from the 9.8% ownership limits under certain circumstances. In connection with our formation transactions, our board of directors will grant a waiver to STAG GI, GI Partners and an affiliate of GI Partners to own up to 28.7% of our outstanding common stock. Our charter also prohibits any person from, among other matters: beneficially or constructively owning or transferring shares of our capital stock if such ownership or transfer would result in our being "closely held" within the meaning of Section 856(h) of the Code; owning or transferring our capital stock if such ownership or transfer would result in us becoming a "pension-held REIT" under Section 856(h)(3)(D) of the Code; transferring shares of our capital stock if such transfer would result in our capital stock being owned by fewer than 100 persons; or beneficially or constructively owning or transferring shares of our capital stock if such ownership or transfer would cause us to own, directly or indirectly, 10% or more of the ownership interests in a tenant of our company (or a tenant of any entity owned or controlled by us) or would cause any independent contractor to not be treated as such under Section 856(d)(3) of the Code, or beneficially or constructively owning shares of our capital stock to the extent such beneficial or constructive ownership would otherwise cause us to fail to qualify as a REIT. See "Description of Stock—Restrictions on Ownership and Transfer of Stock."

Lock-Up Arrangements

        We and our executive officers and directors and the owners of the management company, Fund III, Fund IV and STAG GI have agreed not to sell or transfer any common units or shares of common stock, as applicable, for a period of 180 days in the case of our company and 12 months in the case of our executive officers, directors and contributors after the date of this prospectus. Specifically, all of these parties have agreed, subject to exceptions, not to directly or indirectly offer, pledge, sell or contract to sell any common units or shares of common stock, sell any option or contract to purchase any common units or shares of common stock, purchase any option or contract to sell any common units or shares of common stock, grant any option, right or warrant for the sale of any common units or shares of common stock, lend or otherwise dispose of or transfer any common units or shares of common stock, request or demand that we file a registration statement related to the common units or shares of common stock, or enter into any swap or other agreement that transfers, in whole or in part, the economic consequence of ownership of any common units or shares of common stock whether any such swap or transaction is to be settled by delivery of shares or other securities, in cash or otherwise.

17

Table of Contents

The Offering

18

Table of Contents

(1)

Assumes the underwriters' overallotment option to purchase up to an additional 2,062,500 shares of common stock is not exercised.

(2)

Does not include 1,319,250 shares of our common stock reserved for future issuance under our 2011 Equity Incentive Plan. Includes 200,441 LTIP units to be granted to our executive officers and independent directors under our 2011 Equity Incentive Plan upon consummation of this offering and 80,809 shares of our restricted common stock to be issued under our 2011 Equity Incentive Plan to certain employees upon consummation of this offering. See "Management—Equity Incentive Plan" for additional information.

(3)

Includes 7,590,000 common units held by limited partners (other than STAG Industrial, Inc.) expected to be outstanding following consummation of our formation transactions.

(4)

The debt repayments described above are estimated based on principal and related accrued interest outstanding as of December 31, 2010.

19

Table of Contents

Summary Financial Information

        The following table sets forth summary financial and operating data on (1) a pro forma basis for our company and (2) an historical basis for STAG Predecessor Group. On a pro forma basis, we will own 91 properties, consisting of 57 properties owned by STAG Predecessor Group and 34 properties that constitute STAG Contribution Group. STAG Predecessor Group, which includes the entity that is considered our accounting acquirer, is part of our predecessor business and consists of the subsidiaries of Fund III that will be contributed to us by Fund III in our formation transactions. STAG Contribution Group consists of the properties owned by Fund IV and STAG GI that will be contributed to us in the formation transactions.

        In the summary financial and operating data, we have not presented historical information for STAG Industrial, Inc. because we have not had any corporate activity since our formation other than the issuance of shares of common stock in connection with the initial capitalization of our company and activity in connection with our formation transactions and this offering, and because we believe that a discussion of the results of STAG Industrial, Inc. would not be meaningful.

        We have not presented historical financial information for the management company as its results are not considered significant, and because we believe that a discussion of these results (which primarily consist of acquisition and asset management fees from Fund II, Fund III and Fund IV and general and administrative costs), would not be meaningful.

        You should read the following summary financial and operating data in conjunction with "Management's Discussion and Analysis of Financial Condition and Results of Operation," our unaudited pro forma consolidated financial statements and related notes, the historical combined financial statements and related notes of STAG Predecessor Group, the historical combined statements of revenue and certain expenses and related notes of STAG Contribution Group, and the historical (combined) statements of revenue and certain expenses and related notes of the various properties listed in the Index to the Financial Statements.

        The unaudited pro forma condensed consolidated balance sheet data is presented as if this offering and our formation transactions had occurred on December 31, 2010, and the unaudited pro forma statement of operations and other data for the year ended December 31, 2010, is presented as if this offering and our formation transactions had occurred on January 1, 2010. The pro forma financial information is not necessarily indicative of what our actual financial condition would have been as of December 31, 2010 or what our actual results of operations would have been assuming this offering and our formation transactions had been completed as of January 1, 2010, nor does it purport to represent our future financial position or results of operations.

        The summary historical combined balance sheet information as of December 31, 2010 and 2009, and the historical combined statement of operations data for the years ended December 31, 2010, 2009, and 2008, have been derived from the combined financial statements of the STAG Predecessor Group audited by PricewaterhouseCoopers LLP, independent registered public accountants, whose report thereon is included elsewhere in this prospectus. The summary historical cost balance sheet information as of December 31, 2008 and the historical combined statement of operations data for the year ended December 31, 2007 have been derived from audited combined financial statements of the STAG Predecessor Group, which are not included in this prospectus. The summary historical combined balance sheet information as of December 31, 2007 and 2006 and the historical combined statement of operations for the period ended December 31, 2006 have been derived from the unaudited combined financial statements of the STAG Predecessor Group, which are not included in this prospectus.

        The audited historical financial statements of STAG Predecessor Group in this prospectus, and therefore the historical financial and operating data in the table below, exclude the operating results and financial condition of the Option Properties, the entities that own the Option Properties and the management company.

20

Table of Contents

(1)

We have prepared the results of operations for the year ended December 31, 2007 by combining amounts for 2007 obtained by adding the audited operating results of each of the Antecedent for the period of January 1, 2007 to May 31, 2007 and STAG Predecessor Group for the period of June 1, 2007 to December 31, 2007 (since the difference in basis between Antecedent and STAG Predecessor Group were not materially different and the entities were under common management). Although this combined presentation does not comply with GAAP, we believe that it provides a meaningful method of comparison.

(2)

See "Management's Discussion and Analysis of Financial Condition and Results of Operations" for more detailed explanations of net operating income ("NOI"), EBITDA, FFO and adjusted funds from operations ("AFFO"), and reconciliations of NOI, EBITDA, FFO and AFFO to net income computed in accordance with GAAP.

21

Table of Contents

RISK FACTORS

         An investment in our common stock involves risks. In addition to other information in this prospectus, you should carefully consider the following risks before investing in our common stock offered by this prospectus. The occurrence of any of the following risks could materially and adversely affect our business, prospects, financial condition, results of operations and our ability to make cash distributions to our shareholders, which could cause you to lose all or a significant portion of your investment in our common stock. Some statements in this prospectus, including statements in the following risk factors, constitute forward-looking statements. See "Cautionary Note Regarding Forward-Looking Statements."

Risks Related to Our Business and Operations

Our investments are concentrated in the industrial real estate sector, and our business would be adversely affected by an economic downturn in that sector.

        All of our 91 properties are industrial properties, including 44 warehouse/distribution facilities, 26 manufacturing facilities and 21 flex/office facilities. This concentration may expose us to the risk of economic downturns in the industrial real estate sector to a greater extent than if our properties were more diversified across other sectors of the real estate industry.

Adverse economic conditions will negatively affect our returns and profitability.

        Our operating results may be affected by market and economic challenges, including the current global economic credit environment, which may result from a continued or exacerbated general economic slow down experienced by the nation as a whole or by the local economies where our properties may be located, or by the real estate industry, including the following:

•

poor economic conditions may result in tenant defaults under leases;



•

re-leasing may require concessions or reduced rental rates under the new leases due to reduced demand;



•

adverse capital and credit market conditions may restrict our operating activities; and



•

constricted access to credit may result in tenant defaults, non-renewals under leases or inability of potential buyers to acquire properties held for sale.

        Also, to the extent we purchase real estate in an unstable market, we are subject to the risk that if the real estate market ceases to attract the same level of capital investment in the future that it attracts at the time of our purchases, or the number of companies seeking to acquire properties decreases, the value of our investments may not appreciate or may decrease significantly below the amount we pay for these investments. The length and severity of any economic slow down or downturn cannot be predicted. Our operations could be negatively affected to the extent that an economic slow down or downturn is prolonged or becomes more severe.

Dislocations in the credit markets and real estate markets could have a material adverse effect on our results of operations, financial condition and ability to pay distributions to you.

        Domestic and international financial markets recently experienced significant dislocations brought about in large part by failures in the U.S. banking system. These dislocations have impacted the availability of credit. If this dislocation in the credit markets causes the inability to borrow at attractive rates, our ability to borrow monies to finance the purchase of, or other activities related to, real estate assets will be negatively impacted. If we are unable to borrow monies on terms and conditions that we find acceptable, we likely will have to reduce the number of properties we can purchase, and the return on the properties we do purchase may be lower. Also, if the values of our properties decline we may be

22

Table of Contents

RISK FACTORS

unable to refinance all of our debt as it matures. All of these events would have a material adverse effect on our results of operations, financial condition and ability to pay distributions.

Events or occurrences that affect areas in which our properties are geographically concentrated may impact financial results.

        In addition to general, regional, national and international economic conditions, our operating performance is impacted by the economic conditions of the specific markets in which we have concentrations of properties. We have holdings in the following states (which, as of December 31, 2010, accounted for the percentage of our total annualized rent indicated): North Carolina (17.1%); Ohio (12.7%); Wisconsin (7.2%); and Michigan (6.1%). Our operating performance could be adversely affected if conditions become less favorable in any of the states or regions in which we have a concentration of properties.

We are subject to industry concentrations that make us susceptible to adverse events with respect to certain industries.

        We are subject to certain industry concentrations with respect to our properties, including the following (which, as of December 31, 2010, accounted for the percentage of our total annualized rent indicated): Containers & Packaging (14.7%); Business Services (9.8%); Personal Products (9.5%); Industrial Equipment, Components & Metals (7.1%); Aerospace & Defense (7.1%); Automotive (7.0%); Retail (6.9%); Food & Beverages (6.6%); and Technology (6.3%). Such industries are subject to specific risks that could result in downturns within the industries. For example, several of our technology tenants operate in the telecommunications sector. Telecommunications companies face risks regarding their ability to adapt to new technological developments and changes in regulations by the Federal Communications Commission and other federal, state and local agencies. Any downturn in one or more of these industries, or in any other industry in which we may have a significant concentration now or in the future, could adversely affect our tenants who are involved in such industries. If any of these tenants is unable to withstand such downturn or is otherwise unable to compete effectively in its business, it may be forced to declare bankruptcy, fail to meet its rental obligations, seek rental concessions or be unable to enter into new leases, which could materially and adversely affect us.

We are subject to risks involved in single-tenant leases, and the default by one or more tenants could materially and adversely affect us.

        Any of our tenants may experience a downturn in its business at any time that may significantly weaken its financial condition or cause its failure. As a result, such tenant may decline to extend or renew its lease upon expiration, fail to make rental payments when due or declare bankruptcy. The default, financial distress or bankruptcy of a single tenant could cause interruptions in the receipt of rental revenue and/or result in a vacancy, which is likely to result in the complete reduction in the operating cash flows generated by the property leased to that tenant and may decrease the value of that property. In addition, a majority of our leases generally require the tenant to pay all or substantially all of the operating expenses normally associated with the ownership of the property, such as utilities, real estate taxes, insurance and routine maintenance. Following a vacancy at a single-tenant property, we will be responsible for all of the operating costs at such property until it can be re-let, if at all.

23

Table of Contents

RISK FACTORS

If our tenants are unable to obtain financing necessary to continue to operate their businesses and pay us rent, we could be materially and adversely affected.

        Many of our tenants rely on external sources of financing to operate their businesses. The U.S. financial and credit markets continue to experience liquidity disruptions, resulting in the unavailability of financing for many businesses. If our tenants are unable to obtain financing necessary to continue to operate their businesses, they may be unable to meet their rent obligations to us or enter into new leases with us or be forced to declare bankruptcy and reject our leases, which could materially and adversely affect us.

As a newly formed REIT, we have no operating history and may not be able to operate our business successfully or implement our business strategies as described in this prospectus.

        We were organized in July 2010 and will commence operations upon completion of our formation transactions and this offering. We are subject to all the risks and uncertainties associated with any new business, including the risk that we will not achieve our investment objectives and that the value of your investment could decline substantially.

As a newly formed REIT, we have no experience operating as a publicly traded REIT, which may affect our ability to successfully operate our business or generate sufficient cash flow to make or sustain distributions to our shareholders.

        We have no experience operating as a publicly traded REIT. We cannot assure you that our past experience will be sufficient to successfully operate our company as a REIT or a publicly traded company, including the requirements to timely meet disclosure requirements and comply with the Sarbanes-Oxley Act of 2002. Failure to maintain REIT status would have an adverse effect on our financial condition, results of operations, cash flow, per share trading price of our common stock and ability to satisfy our debt service obligations and to pay dividends to you.

We depend on key personnel, the loss of their full service could adversely affect us.

        Our success depends to a significant degree upon the continued contributions of certain key personnel including, but not limited to, Messrs. Butcher, Sullivan, Mecke and King and Ms. Arnone, whose continued service is not guaranteed, and each of whom would be difficult to replace. While we have entered into employment contracts with Messrs. Butcher, Sullivan, Mecke and King and Ms. Arnone, they may nevertheless cease to provide services to us at any time. If any of our key personnel were to cease employment with us, our operating results could suffer. Our ability to retain our management group or to attract suitable replacements should any members of the management group leave is dependent on the competitive nature of the employment market. The loss of services from key members of the management group or a limitation in their availability could adversely impact our financial condition and cash flows. Further, such a loss could be negatively perceived in the capital markets. We have not obtained and do not expect to obtain key man life insurance on any of our key personnel except for Mr. Butcher, the founder of STAG. The policy has limits in the amount of $5.0 million and covers us in the event of Mr. Butcher's death.

        We also believe that, as we expand, our future success depends, in large part, upon our ability to hire and retain highly skilled managerial, investment, financing, operational and marketing personnel. Competition for such personnel is intense, and we cannot assure you that we will be successful in attracting and retaining such skilled personnel.

24

Table of Contents

RISK FACTORS

Our growth will depend upon future acquisitions of properties, and we may be unable to consummate acquisitions on advantageous terms or acquisitions may not perform as we expect.

        We acquire and intend to continue to acquire primarily generic distribution warehouses, manufacturing properties and flex/office facilities. The acquisition of properties entails various risks, including the risks that our investments may not perform as we expect. Further, we face competition for attractive investment opportunities from other well-capitalized real estate investors, including both publicly-traded REITs and private institutional investment funds, and these competitors may have greater financial resources than us and a greater ability to borrow funds to acquire properties. This competition will increase as investments in real estate become increasingly attractive relative to other forms of investment. As a result of competition, we may be unable to acquire additional properties as we desire or the purchase price may be significantly elevated. In addition, we expect to finance future acquisitions through a combination of secured and unsecured borrowings, proceeds from equity or debt offerings by us or our operating partnership or its subsidiaries and proceeds from property contributions and divestitures which may not be available and which could adversely affect our cash flows. Any of the above risks could adversely affect our financial condition, results of operations, cash flows and ability to pay distributions on, and the market price of, our common stock.

We may be unable to source "limited marketing" deal flow in the future, which could adversely affect our ability to locate and acquire additional properties at attractive prices.

        A key component of our growth strategy is to continue to acquire additional industrial real estate assets. Since 2004, approximately 32.5% of the acquisitions we sourced, based on total purchase price, were acquired before they were widely marketed by real estate brokers, or "limited marketing" transactions. Properties that are acquired by "limited marketing" transactions are typically more attractive to us as a purchaser because of the absence of a formal sales process, which could lead to higher prices. If we cannot obtain "limited marketing" deal flow in the future, our ability to locate and acquire additional properties at attractive prices could be somewhat adversely affected.

The fair market value of the consideration for the assets to be acquired by us in our formation transactions may exceed the assets' aggregate book value and fair market value.

        We have not obtained updated third-party appraisals of the properties and other assets to be contributed to us in our formation transactions or fairness opinions in connection with our formation transactions. The initial public offering price of our common stock was determined in consultation with the underwriters based on the history and prospects for the industry in which we compete, our financial information, the ability of our management and our business potential and earning prospects, the prevailing securities markets at the time of this offering, and the recent market prices of, and the demand for, publicly traded shares of generally comparable companies. The initial public offering price does not necessarily bear any relationship to the book value or the fair market value of such assets. As a result, the consideration for these assets in our formation transactions may exceed their book value and fair market value.

The cash available for distribution to shareholders may not be sufficient to pay dividends at expected levels, nor can we assure you of our ability to make distributions in the future. We may use borrowed funds to make distributions.

        All distributions will be made at the discretion of our board of directors and will depend on our earnings, our financial condition, maintenance of our REIT qualification and other factors as our board of directors may deem relevant from time to time. We may not be able to make distributions in the future. In addition, some of our distributions may include a return of capital. To the extent that we

25

Table of Contents

RISK FACTORS

make distributions in excess of our current and accumulated earnings and profits, such distributions would generally be considered a return of capital for U.S. federal income tax purposes to the extent of the holder's adjusted tax basis in its shares. A return of capital is not taxable, but it has the effect of reducing the holder's adjusted tax basis in its investment. To the extent that distributions exceed the adjusted tax basis of a holder's shares, they will be treated as gain from the sale or exchange of such stock. See "U.S. Federal Income Tax Considerations—Taxation of Shareholders." If we borrow to fund distributions, our future interest costs would increase, thereby reducing our earnings and cash available for distribution from what they otherwise would have been.

Our ability to pay our estimated initial annual distribution depends upon our actual operating results, and, in adverse scenarios, we may have to borrow funds under our secured corporate revolving credit facility to pay this distribution, which could slow our growth.

        We expect to pay an initial annual dividend of $1.024 per share, or $22.1 million in the aggregate, which represents approximately 103.6% of our estimated cash available for distribution of $21.4 million for the 12 months ending December 31, 2011 calculated as described in "Distribution Policy" (which does not take into account future tenant retention and potential acquisitions). Our ability to pay our estimated initial annual distribution depends upon our actual operating results, and, in adverse scenarios, we may be required either to fund future distributions from cash balances, borrowings under our secured corporate revolving credit facility or to reduce such distributions. Use of our secured corporate revolving credit facility to pay distributions will reduce the amount of our borrowing capacity available for other purposes. If we need to borrow funds on a regular basis to meet our distribution requirements or if we reduce the amount of our distribution, our stock price may be adversely affected.

We have owned our properties for a limited time, and we may not be aware of characteristics or deficiencies involving any one or all of them.

        Prior to our formation transactions and this offering, Fund III, Fund IV and STAG GI owned or controlled our 91 initial properties comprising an aggregate 13.9 million rentable square feet. All of these properties have been under management for less than four years. The properties may have characteristics or deficiencies unknown to us that could affect their valuation or revenue potential and such properties may not ultimately perform up to our expectations. We cannot assure you that the operating performance of the properties will not decline under our management.

Risks Related to Our Organization and Structure

We may pursue less vigorous enforcement of terms of contribution, purchase and sale and other agreements because of conflicts of interest with certain of our officers and directors.

        Certain of our directors and executive officers have ownership interests in the other entities or properties to be contributed to us in our formation transactions, including Fund III, Fund IV, STAG GI and the management company. Following the completion of our formation transactions and this offering, under the contribution agreements with certain of our directors and executive officers and their affiliates, we will be entitled to indemnification in the event of breaches of the representations and warranties made by them with respect to the entities and properties to be acquired by us. Such indemnification is limited and we are not entitled to any other indemnification in connection with our formation transactions. In addition, we expect that our executive officers will enter into employment agreements with us pursuant to which they will agree, among other things, not to engage in certain business activities in competition with us and pursuant to which they will devote substantially all of their business time to our business. See "Management—Employment Agreements." We may choose not

26

Table of Contents

RISK FACTORS

to enforce, or to enforce less vigorously, our rights under these agreements due to our ongoing relationship with our directors and executive officers.

Certain of our directors and executive officers exercised significant influence with respect to the terms of our formation transactions, including the economic benefits they will receive, and as a result, the consideration given by us may exceed the fair market value of the properties.

        We did not conduct arm's-length negotiations with respect to all of the terms of our formation transactions. In the course of structuring our formation transactions, our directors and executive officers had the ability to influence the type and level of benefits that they and our other officers will receive from us. In addition, certain of our directors and executive officers had substantial pre-existing ownership interests in Fund III, Fund IV, STAG GI and the management company, and will receive substantial economic benefits as a result of our formation transactions. The formation transaction documents provide that the individual allocations of the total formation transaction value to each prior investor are determined by the provisions of the applicable partnership agreement or organizational document of the relevant fund. Also, our directors and executive officers have assumed management and/or director positions with us, for which they will obtain certain other benefits such as employment agreements, restricted stock or LTIP unit grants and other compensation.

Our executive officers and directors have duties to Fund II, Fund III, Fund IV and STAG GI which may create conflicts of interest, which may impede business decisions that could benefit our shareholders.

        Certain of our executive officers and directors also serve on the board of managers and/or management committees of the managers of Fund II, Fund III and Fund IV, and are members of the board of directors of STAG GI. Our officers and directors may have conflicting duties because they have a duty to both us and to Fund II (which will retain ownership of its properties and continue as a private, fully-invested fund until liquidated), Fund III (which will retain ownership of the Option Properties), Fund IV and STAG GI. Upon completion of our formation transactions, all of these entities will be fully invested and, as a result, will not be making any additional investments in income properties. However, some Fund II properties may be competitive with our current or future properties. It is possible that the executive officers' and board members' fiduciary duty to Fund II, Fund III, Fund IV and STAG GI, including, without limitation, their interests in Fund II and the Option Properties, will conflict with what will be in the best interests of our company.

Our fiduciary duties as sole member of the general partner of our operating partnership could create conflicts of interest, which may impede business decisions that could benefit our shareholders.

        After the consummation of this offering, we, as the sole member of the general partner of our operating partnership, will have fiduciary duties to the other limited partners in the operating partnership, the discharge of which may conflict with the interests of our shareholders. The limited partners of our operating partnership have agreed that, in the event of a conflict in the fiduciary duties owed by us to our shareholders and, in our capacity as indirect general partner of our operating partnership, to such limited partners, we are under no obligation to give priority to the interests of such limited partners. In addition, those persons holding common units will have the right to vote on certain amendments to the operating partnership agreement (which require approval by a majority in interest of the limited partners, including us) and individually to approve certain amendments that would adversely affect their rights. These voting rights may be exercised in a manner that conflicts with the interests of our shareholders. For example, we are unable to modify the rights of limited partners to receive distributions as set forth in the operating partnership agreement in a manner that adversely

27

Table of Contents

RISK FACTORS

affects their rights without their consent, even though such modification might be in the best interest of our shareholders.

        In addition, conflicts may arise when the interests of our shareholders and the limited partners of the operating partnership diverge, particularly in circumstances in which there may be an adverse tax consequence to the limited partners. Tax consequences to holders of common units upon a sale or refinancing of our properties may cause the interests of our senior management to differ from your own. As a result of unrealized built-in gain attributable to contributed property at the time of contribution, some holders of common units, including our principals, may suffer different and more adverse tax consequences than holders of our common stock upon the sale or refinancing of the properties owned by our operating partnership, including disproportionately greater allocations of items of taxable income and gain upon a realization event. As those holders will not receive a correspondingly greater distribution of cash proceeds, they may have different objectives regarding the appropriate pricing, timing and other material terms of any sale or refinancing of certain properties, or whether to sell or refinance such properties at all.

        We may experience conflicts of interest with several members of our senior management team who have or may become limited partners in our operating partnership through the receipt of LTIP units granted under our 2011 Equity Incentive Plan. See "Management—Equity Incentive Plan."

Our growth depends on external sources of capital which are outside of our control, which may affect our ability to seize strategic opportunities, satisfy debt obligations and make distributions to our shareholders.

        In order to maintain our qualification as a REIT, we are generally required under the Code to distribute annually at least 90% of our net taxable income, determined without regard to the dividends paid deduction and excluding any net capital gain. In addition, we will be subject to income tax at regular corporate rates to the extent that we distribute less than 100% of our net taxable income, including any net capital gains. Because of these distribution requirements, we may not be able to fund future capital needs, including any necessary acquisition financing, from operating cash flow. Consequently, we may rely on third-party sources to fund our capital needs. We may not be able to obtain financing on favorable terms or at all. Any additional debt we incur will increase our leverage. Our access to third-party sources of capital depends, in part, on:

•

general market conditions;



•

the market's perception of our growth potential;



•

our current debt levels;



•

our current and expected future earnings;



•

our cash flow and cash dividends; and



•

the market price per share of our common stock.

        If we cannot obtain capital from third-party sources, we may not be able to acquire properties when strategic opportunities exist, meet the capital and operating needs of our existing properties or satisfy our debt service obligations. Further, in order to meet the REIT distribution requirements and maintain our REIT status and to avoid the payment of income and excise taxes, we may need to borrow funds on a short-term basis even if the then-prevailing market conditions are not favorable for these borrowings. These short-term borrowing needs could result from differences in timing between the actual receipt of cash and inclusion of income for U.S. federal income tax purposes or the effect of non-deductible capital expenditures, the creation of reserves, certain restrictions on distributions under loan documents or required debt or amortization payments.

28

Table of Contents

RISK FACTORS

        To the extent that capital is not available to acquire properties, profits may not be realized or their realization may be delayed, which could result in an earnings stream that is less predictable than some of our competitors and result in us not meeting our projected earnings and distributable cash flow levels in a particular reporting period. Failure to meet our projected earnings and distributable cash flow levels in a particular reporting period could have an adverse effect on our financial condition and on the market price of our common stock.

Our charter, the partnership agreement of our operating partnership and Maryland law contain provisions that may delay or prevent a change of control transaction.

        Our charter contains 9.8% ownership limits.     Our charter, subject to certain exceptions, authorizes our directors to take such actions as are necessary and desirable to limit any person to actual or constructive ownership of no more than 9.8% in value or in number of shares, whichever is more restrictive, of the outstanding shares of our capital stock and no more than 9.8% in value or in number of shares, whichever is more restrictive, of the outstanding shares of our common stock. Our board of directors, in its sole discretion, may exempt a proposed transferee from the ownership limits. However, our board of directors may not grant an exemption from the ownership limits to any proposed transferee whose ownership, direct or indirect, of more than 9.8% of the value or number of our outstanding shares of our common stock could jeopardize our status as a REIT. The ownership limits contained in our charter and the restrictions on ownership of our common stock may delay or prevent a transaction or a change of control that might involve a premium price for our common stock or otherwise be in the best interest of our shareholders. See "Description of Stock—Restrictions on Ownership and Transfer of Stock."

        Our board of directors may create and issue a class or series of preferred stock without shareholder approval.     Our board of directors is empowered under our charter to amend our charter to increase or decrease the aggregate number of shares of our common stock or the number of shares of stock of any class or series that we have authority to issue, to designate and issue from time to time one or more classes or series of preferred stock and to classify or reclassify any unissued shares of our common stock or preferred stock without shareholder approval. Our board of directors may determine the relative rights, preferences and privileges of any class or series of preferred stock issued. As a result, we may issue series or classes of preferred stock with preferences, dividends, powers and rights, voting or otherwise, senior to the rights of holders of our common stock. The issuance of preferred stock could also have the effect of delaying or preventing a change of control transaction that might otherwise be in the best interests of our shareholders.

        Certain provisions in the partnership agreement for our operating partnership may delay or prevent unsolicited acquisitions of us.     Provisions in the partnership agreement for our operating partnership may delay or make more difficult unsolicited acquisitions of us or changes in our control. These provisions could discourage third parties from making proposals involving an unsolicited acquisition of us or change of our control, although some shareholders might consider such proposals, if made, desirable. These provisions include, among others:

•

redemption rights of qualifying parties;



•

transfer restrictions on our common units;



•

the ability of the general partner in some cases to amend the partnership agreement without the consent of the limited partners; and



•

the right of the limited partners to consent to transfers of the general partnership interest and mergers under specified circumstances.

29

Table of Contents

RISK FACTORS

        Any potential change of control transaction may be further limited as a result of provisions of the partnership unit designation for the LTIP units, which require us to preserve the rights of LTIP unit holders and may restrict us from amending the partnership agreement for our operating partnership in a manner that would have an adverse effect on the rights of LTIP unit holders.

        Certain provisions of Maryland law could inhibit changes in control.     Certain provisions of the MGCL may have the effect of inhibiting a third party from making a proposal to acquire us or impeding a change of control under circumstances that otherwise could provide our shareholders with the opportunity to realize a premium over the then-prevailing market price of our common stock, including:

•

"business combination" provisions that, subject to limitations, prohibit certain business combinations between us and an "interested shareholder" (defined generally as any person who beneficially owns 10% or more of the voting power of our shares or an affiliate thereof) for five years after the most recent date on which the shareholder becomes an interested shareholder, and thereafter impose special appraisal rights and special shareholder voting requirements on these combinations; and



•

"control share" provisions that provide that "control shares" of our company (defined as shares which, when aggregated with other shares controlled by the shareholder, entitle the shareholder to exercise one of three increasing ranges of voting power in electing directors) acquired in a "control share acquisition" (defined as the direct or indirect acquisition of ownership or control of "control shares") have no voting rights except to the extent approved by our shareholders by the affirmative vote of at least two-thirds of all the votes entitled to be cast on the matter, excluding all interested shares.

        We have elected to opt out of these provisions of the MGCL, in the case of the business combination provisions of the MGCL, by resolution of our board of directors, and in the case of the control share provisions of the MGCL, pursuant to a provision in our bylaws. However, only upon the approval of our shareholders, our board of directors may by resolution elect to repeal the foregoing opt-outs from the business combination provisions of the MGCL and we may, only upon the approval of our shareholders, by amendment to our bylaws, opt in to the control share provisions of the MGCL in the future.

        Additionally, Title 8, Subtitle 3 of the MGCL, permits our board of directors, without shareholder approval and regardless of what is currently provided in our charter or our bylaws, to implement takeover defenses, some of which (for example, a classified board) we do not currently have. These provisions may have the effect of inhibiting a third party from making an acquisition proposal for our company or of delaying, deferring or preventing a change in control of our company under circumstances that otherwise could provide the holders of our common stock with the opportunity to realize a premium over the then-current market price.

        Our charter, bylaws, the partnership agreement for our operating partnership and Maryland law also contain other provisions that may delay, defer or prevent a transaction or a change of control that might involve a premium price for our common stock or otherwise be in the best interest of our shareholders. See "Certain Provisions of Maryland Law and of Our Charter and Bylaws—Our Board of Directors," "—Business Combinations," "—Control Share Acquisitions," "—Maryland Unsolicited Takeovers Act," "—Advance Notice of Director Nominations and New Business" and "Our Operating Partnership and the Partnership Agreement."

30

Table of Contents

RISK FACTORS

Under their employment agreements, our executive officers will have the right to terminate their employment and, under certain conditions, receive severance, which may adversely affect us.

        In connection with this offering, we are entering into employment agreements with Messrs. Butcher, Sullivan, Mecke and King and Ms. Arnone. These employment agreements provide that each executive may terminate his or her employment and, under certain conditions, receive severance based on two or three times (depending on the officer) the annual total of salary and bonus and immediate vesting of all outstanding equity-based awards. In the case of certain terminations, they would not be restricted from competing with us after their departure. See "Management—Employment Agreements" for further details about the terms of these employment agreements.

Compensation awards to our management may not be tied to or correspond with our improved financial results or share price, which may adversely affect us.

        The compensation committee of our board of directors is responsible for overseeing our compensation and employee benefit plans and practices, including our executive compensation plans and our incentive compensation and equity-based compensation plans. Our compensation committee has significant discretion in structuring compensation packages and may make compensation decisions based on any number of factors. As a result, compensation awards may not be tied to or correspond with improved financial results at our company or the share price of our common stock.

If we fail to establish and maintain an effective system of integrated internal controls, we may not be able to accurately report our financial results.

        In the past, we have reported our results to the investors in our predecessor business on a fund-by-fund basis. We have generally maintained separate systems and procedures for each fund, which makes it more difficult for us to evaluate and integrate their systems and procedures on a reliable company-wide basis. In addition, for certain funds we were not required to report our results on a GAAP basis. In connection with our operation as a public company, we will be required to report our operations on a consolidated basis under GAAP and, in some cases, on a property by property basis. We are in the process of implementing an internal audit function and modifying our company-wide systems and procedures in a number of areas to enable us to enhance our reporting on a consolidated basis under GAAP as we continue the process of integrating the financial reporting of our predecessor. If we fail to implement proper overall business controls, including as required to integrate our predecessor entities and support our growth, our results of operations could be harmed or we could fail to meet our reporting obligations.

Our board of directors can take many actions without shareholder approval.

        Our board of directors has overall authority to oversee our operations and determine our major corporate policies. This authority includes significant flexibility. For example, our board of directors can do the following:

•

amend or revise at any time and from time to time our investment, financing, borrowing and dividend policies and our policies with respect to all other activities, including growth, debt, capitalization and operations;



•

amend our policies with respect to conflicts of interest provided that such changes are consistent with applicable legal requirements;



•

within the limits provided in our charter, prevent the ownership, transfer and/or accumulation of shares in order to protect our status as a REIT or for any other reason deemed to be in the best interests of us and our shareholders;

31

Table of Contents

RISK FACTORS

•

issue additional shares without obtaining shareholder approval, which could dilute the ownership of our then-current shareholders;



•

amend our charter to increase or decrease the aggregate number of shares of stock or the number of shares of stock of any class or series, without obtaining shareholder approval;



•

classify or reclassify any unissued shares of our common stock or preferred stock and set the preferences, rights and other terms of such classified or reclassified shares, without obtaining shareholder approval;



•

employ and compensate affiliates;



•

direct our resources toward investments that do not ultimately appreciate over time;



•

change creditworthiness standards with respect to third-party tenants; and



•

determine that it is no longer in our best interests to attempt to qualify, or to continue to qualify, as a REIT.

        Any of these actions could increase our operating expenses, impact our ability to make distributions or reduce the value of our assets without giving you, as a shareholder, the right to vote.

Our rights and the rights of our shareholders to take action against our directors and officers are limited.

        Maryland law provides that a director or officer has no liability in that capacity if he or she performs his or her duties in good faith, in a manner he or she reasonably believes to be in our best interests and with the care that an ordinarily prudent person in a like position would use under similar circumstances. In addition, our charter eliminates our directors' and officers' liability to us and our shareholders for money damages except for liability resulting from actual receipt of an improper benefit or profit in money, property or services or active and deliberate dishonesty established by a final judgment and which is material to the cause of action. Our bylaws require us to indemnify our directors and officers to the maximum extent permitted by Maryland law for liability actually incurred in connection with any proceeding to which they may be made, or threatened to be made, a party, except to the extent that the act or omission of the director or officer was material to the matter giving rise to the proceeding and was either committed in bad faith or was the result of active and deliberate dishonesty, the director or officer actually received an improper personal benefit in money, property or services, or, in the case of any criminal proceeding, the director or officer had reasonable cause to believe that the act or omission was unlawful. As a result, we and our shareholders may have more limited rights against our directors and officers than might otherwise exist under common law. In addition, we may be obligated to fund the defense costs incurred by our directors and officers.

General Real Estate Risks

Our performance and value are subject to general economic conditions and risks associated with our real estate assets.

        The investment returns available from equity investments in real estate depend on the amount of income earned and capital appreciation generated by the properties, as well as the expenses incurred in connection with the properties. If our properties do not generate income sufficient to meet operating expenses, including debt service and capital expenditures, then our ability to pay distributions to our shareholders could be adversely affected. In addition, there are significant expenditures associated with an investment in real estate (such as mortgage payments, real estate taxes and maintenance costs) that

32

Table of Contents

RISK FACTORS

generally do not decline when circumstances reduce the income from the property. Income from and the value of our properties may be adversely affected by:

•

changes in general or local economic climate;



•

the attractiveness of our properties to potential tenants;



•

changes in supply of or demand for similar or competing properties in an area;



•

bankruptcies, financial difficulties or lease defaults by our tenants;



•

changes in interest rates and availability of permanent mortgage funds that may render the sale of a property difficult or unattractive or otherwise reduce returns to shareholders;



•

changes in operating costs and expenses and our ability to control rents;



•

changes in or increased costs of compliance with governmental rules, regulations and fiscal policies, including changes in tax, real estate, environmental and zoning laws, and our potential liability thereunder;



•

our ability to provide adequate maintenance and insurance;



•

changes in the cost or availability of insurance, including coverage for mold or asbestos;



•

unanticipated changes in costs associated with known adverse environmental conditions or retained liabilities for such conditions;



•

periods of high interest rates and tight money supply;



•

tenant turnover;



•

general overbuilding or excess supply in the market; and



•

disruptions in the global supply chain caused by political, regulatory or other factors including terrorism.

        In addition, periods of economic slowdown or recession, rising interest rates or declining demand for real estate, or public perception that any of these events may occur, would result in a general decrease in rents or an increased occurrence of defaults under existing leases, which would adversely affect our financial condition and results of operations. Future terrorist attacks may result in declining economic activity, which could reduce the demand for, and the value of, our properties. To the extent that future attacks impact our tenants, their businesses similarly could be adversely affected, including their ability to continue to honor their existing leases.

        For these and other reasons, we cannot assure you that we will be profitable or that we will realize growth in the value of our real estate properties.

Actions by our competitors may decrease or prevent increases in the occupancy and rental rates of our properties.

        We compete with other owners, operators and developers of real estate, some of which own properties similar to ours in the same markets and submarkets in which our properties are located. If our competitors offer space at rental rates below current market rates or below the rental rates we currently charge our tenants, we may lose potential tenants, and we may be pressured to reduce our rental rates below those we currently charge in order to retain tenants when our tenants' leases expire. As a result, our financial condition, cash flows, cash available for distribution, trading price of our common stock and ability to satisfy our debt service obligations could be materially adversely affected.

33

Table of Contents

RISK FACTORS

A significant portion of our properties have leases that expire in the next three years and we may be unable to renew leases, lease vacant space or re-lease space as leases expire, which could adversely affect our results of operations, cash flows and the value of our common stock.

        Our results of operations, cash flows and the value of our common stock would be adversely affected if we are unable to lease, on economically favorable terms, a significant amount of space in our operating properties. As of December 31, 2010, leases with respect to 30.2% of our total annualized rent will expire on or before December 31, 2013. We cannot assure you expiring leases will be renewed or that our properties will be re-leased at base rental rates equal to or above the current average base rental rates. In addition, the number of vacant or partially vacant industrial properties in a market or submarket could adversely affect our ability to re-lease the space at attractive rental rates.

A property that incurs a vacancy could be difficult to sell or re-lease, which could adversely affect our results of operations, cash flows and the value of our common stock.

        A property may incur a vacancy either by the continued default of a tenant under its lease or the expiration of one of our leases. In addition, certain of the properties we acquire may have some level of vacancy at the time of closing. Certain of our properties may be specifically suited to the particular needs of a tenant. We may have difficulty obtaining a new tenant for any vacant space we have in our properties. If the vacancy continues for a long period of time, we may suffer reduced revenue resulting in less cash available to be distributed to shareholders. In addition, the resale value of a property could be diminished because the market value of a particular property will depend principally upon the value of the leases of such property.

We may not have funding for future tenant improvements, which could adversely affect our results of operations, cash flows and the value of our common stock.

        When a tenant at one of our properties does not renew its lease or otherwise vacates its space in one of our buildings, it is likely that, in order to attract one or more new tenants, we will be required to expend funds to construct new tenant improvements in the vacated space. Except with respect to our current reserves for capital expenditures, tenant improvements and leasing commissions, we cannot assure you that we will have adequate sources of funding available to us for such purposes in the future.

Bankruptcy laws will limit our remedies if a tenant becomes bankrupt and rejects the lease and we may be unable to collect balances due on our leases.

        If a tenant becomes bankrupt or insolvent, that could diminish the income we receive from that tenant's leases. Our tenants may experience downturns in their operating results due to adverse changes to their business or economic conditions, and those tenants that are highly leveraged may have a higher possibility of filing for bankruptcy or insolvency. We may not be able to evict a tenant solely because of its bankruptcy. On the other hand, a bankruptcy court might authorize the tenant to terminate its leases with us. If that happens, our claim against the bankrupt tenant for unpaid future rent would be an unsecured prepetition claim subject to statutory limitations, and therefore such amounts received in bankruptcy are likely to be substantially less than the remaining rent we otherwise were owed under the leases. In addition, any claim we have for unpaid past rent could be substantially less than the amount owed. If the lease for such a property is rejected in bankruptcy, our revenue would be reduced and could cause us to reduce distributions to shareholders.

34

Table of Contents

RISK FACTORS

The fact that real estate investments are not as liquid as other types of assets may reduce economic returns to investors.

        Real estate investments are not as liquid as other types of investments, and this lack of liquidity may limit our ability to react promptly to changes in economic or other conditions. In addition, significant expenditures associated with real estate investments, such as mortgage payments, real estate taxes and maintenance costs, are generally not reduced when circumstances cause a reduction in income from the investments. In addition, we intend to comply with the safe harbor rules relating to the number of properties that can be disposed of in a year, the tax bases and the costs of improvements made to these properties, and other items that enable a REIT to avoid punitive taxation on the sale of assets. Thus, our ability at any time to sell assets or contribute assets to property funds or other entities in which we have an ownership interest may be restricted. This lack of liquidity may limit our ability to vary our portfolio promptly in response to changes in economic or other conditions and, as a result, could adversely affect our financial condition, results of operations, cash flows and our ability to pay distributions on, and the market price of, our common stock.

Acquired properties may be located in new markets where we may face risks associated with investing in an unfamiliar market.

        We have acquired, and may continue to acquire, properties in markets that are new to us. When we acquire properties located in these markets, we may face risks associated with a lack of market knowledge or understanding of the local economy, forging new business relationships in the area and unfamiliarity with local government and permitting procedures.

Uninsured losses relating to real property may adversely affect your returns.

        We attempt to ensure that all of our properties are adequately insured to cover casualty losses. However, there are certain losses, including losses from floods, earthquakes, acts of war, acts of terrorism or riots, that are not generally insured against or that are not generally fully insured against because it is not deemed economically feasible or prudent to do so. In addition, changes in the cost or availability of insurance could expose us to uninsured casualty losses. In the event that any of our properties incurs a casualty loss that is not fully covered by insurance, the value of our assets will be reduced by the amount of any such uninsured loss, and we could experience a significant loss of capital invested and potential revenue in these properties and could potentially remain obligated under any recourse debt associated with the property. Moreover, we, as the indirect general partner of our operating partnership, generally will be liable for all of our operating partnership's unsatisfied recourse obligations, including any obligations incurred by our operating partnership as the general partner of joint ventures. Any such losses could adversely affect our financial condition, results of operations, cash flows and ability to pay distributions on, and the market price of, our common stock. In addition, we may have no source of funding to repair or reconstruct the damaged property, and we cannot assure you that any such sources of funding will be available to us for such purposes in the future. We evaluate our insurance coverage annually in light of current industry practice through an analysis prepared by outside consultants.

Contingent or unknown liabilities could adversely affect our financial condition.

        As part of our formation transactions, we will assume existing liabilities of contributed operating companies and liabilities in connection with contributed properties, some of which may be unknown or unquantifiable at the time this offering is consummated. Unknown liabilities might include liabilities for cleanup or remediation of undisclosed environmental conditions beyond the scope of our environmental

35

Table of Contents

RISK FACTORS

insurance coverage, claims of tenants, vendors or other persons dealing with the entities prior to this offering, tax liabilities, and accrued but unpaid liabilities whether incurred in the ordinary course of business or otherwise. As part of our formation transactions, the owners of our predecessor business have only made limited representations and warranties to us regarding the entities, properties and assets that we will own following our formation transactions that survive for a period of one year and agreed to indemnify us and our operating partnership for breaches of such representations subject to specified deductibles and caps, as applicable. Because many liabilities, including tax liabilities, may not be identified within such period, we may have no recourse against any of the owners of our predecessor business for these liabilities.

        In addition, we may in the future acquire properties, or may have previously owned properties, subject to liabilities and without any recourse, or with only limited recourse, with respect to unknown liabilities. As a result, if a liability were asserted against us based on ownership of any of these entities or properties, then we might have to pay substantial sums to settle it, which could adversely affect our cash flows.

Environmentally hazardous conditions may adversely affect our operating results.

        Under various federal, state and local environmental laws, a current or previous owner or operator of real property may be liable for the cost of removing or remediating hazardous or toxic substances on such property. Such laws often impose liability whether or not the owner or operator knew of, or was responsible for, the presence of such hazardous or toxic substances. Even if more than one person may have been responsible for the contamination, each person covered by the environmental laws may be held responsible for all of the clean-up costs incurred. In addition, third parties may sue the owner or operator of a site for damages based on personal injury, natural resources or property damage or other costs, including investigation and clean-up costs, resulting from the environmental contamination. The presence of hazardous or toxic substances on one of our properties, or the failure to properly remediate a contaminated property, could give rise to a lien in favor of the government for costs it may incur to address the contamination, or otherwise adversely affect our ability to sell or lease the property or borrow using the property as collateral. Environmental laws also may impose restrictions on the manner in which property may be used or businesses may be operated. A property owner who violates environmental laws may be subject to sanctions which may be enforced by governmental agencies or, in certain circumstances, private parties. In connection with the acquisition and ownership of our properties, we may be exposed to such costs. The cost of defending against environmental claims, of compliance with environmental regulatory requirements or of remediating any contaminated property could materially adversely affect our business, assets or results of operations and, consequently, amounts available for distribution to our shareholders.

        Environmental laws in the United States also require that owners or operators of buildings containing asbestos properly manage and maintain the asbestos, adequately inform or train those who may come into contact with asbestos and undertake special precautions, including removal or other abatement, in the event that asbestos is disturbed during building renovation or demolition. These laws may impose fines and penalties on building owners or operators who fail to comply with these requirements and may allow third parties to seek recovery from owners or operators for personal injury associated with exposure to asbestos. Some of our properties contain asbestos-containing building materials.

        We invest in properties historically used for industrial, manufacturing and commercial purposes. Some of these properties contain, or may have contained, underground storage tanks for the storage of petroleum products and other hazardous or toxic substances. All of these operations create a potential

36

Table of Contents

RISK FACTORS

for the release of petroleum products or other hazardous or toxic substances. Some of our properties are adjacent to or near other properties that have contained or currently contain underground storage tanks used to store petroleum products or other hazardous or toxic substances. In addition, certain of our properties are on or are adjacent to or near other properties upon which others, including former owners or tenants of our properties, have engaged, or may in the future engage, in activities that may release petroleum products or other hazardous or toxic substances.

        From time to time, we may acquire properties, or interests in properties, with known adverse environmental conditions where we believe that the environmental liabilities associated with these conditions are quantifiable and that the acquisition will yield a superior risk-adjusted return. In such an instance, we underwrite the costs of environmental investigation, clean-up and monitoring into the cost. Further, in connection with property dispositions, we may agree to remain responsible for, and to bear the cost of, remediating or monitoring certain environmental conditions on the properties.

        Preliminary assessments of environmental conditions at a property that meet certain specifications are often referred to as "Phase I environmental site assessments" or "Phase I environmental assessments." They are intended to discover and evaluate information regarding the environmental condition of the surveyed property and surrounding properties. Phase I environmental assessments generally include an historical review, a public records review, an investigation of the surveyed site and surrounding properties, and preparation and issuance of a written report, but do not include soil sampling or subsurface investigations and typically do not include an asbestos survey. In connection with our secured corporate revolving credit facility and STAG GI's recent acquisition activity, 65.4% of the total rentable square feet of our portfolio have Phase I environmental site assessments that are less than 12 months old. Material environmental conditions, liabilities or compliance concerns may arise after the environmental assessment has been completed. Moreover, there can be no assurance that:

•

future laws, ordinances or regulations will not impose any material environmental liability; or



•

the current environmental condition of our properties will not be affected by tenants, by the condition of land or operations in the vicinity of our properties (such as releases from underground storage tanks), or by third parties unrelated to us.

Compliance or failure to comply with the Americans with Disabilities Act and other similar regulations could result in substantial costs.

        Under the Americans with Disabilities Act of 1990, as amended (the "ADA"), places of public accommodation must meet certain federal requirements related to access and use by disabled persons. Noncompliance could result in the imposition of fines by the federal government or the award of damages to private litigants. If we are required to make unanticipated expenditures to comply with the ADA, including removing access barriers, then our cash flows and the amounts available for distributions to our shareholders may be adversely affected. While we believe that our properties are currently in material compliance with these regulatory requirements, the requirements may change or new requirements may be imposed that could require significant unanticipated expenditures by us that will affect our cash flows and results of operations.

One of our properties is subject to a ground lease that exposes us to the loss of such property upon breach or termination of the ground lease and may limit our ability to sell this property.

        We own one of our properties through a leasehold interest in the land underlying the building and we may acquire additional buildings in the future that are subject to similar ground leases. As lessee under a ground lease, we are exposed to the possibility of losing the property upon expiration, or an

37

Table of Contents

RISK FACTORS

earlier breach by us, of the ground lease, which may have an adverse effect on our business, financial condition and results of operations, our ability to make distributions to our shareholders and the trading price of our common stock.

        In the future, our ground leases may contain certain provisions that may limit our ability to sell certain of our properties. In addition, in the future, in order to assign or transfer our rights and obligations under certain of our ground leases, we may be required to obtain the consent of the landlord which, in turn, could adversely impact the price realized from any such sale.

        We also own one property that benefits from payment in lieu of tax ("PILOT") programs and to facilitate such tax treatment our ownership in this property is structured as a leasehold interest with the relevant municipality serving as lessor. With respect to such arrangement, we have the right to purchase the fee interest in the property for a nominal purchase price, so the risk factors set forth above for traditional ground leases are mitigated by our ability to convert such leasehold interest to fee interest. In the event of such a conversion of our ownership interest, however, any preferential tax treatment offered by the PILOT program will be lost.

We may be unable to sell a property if or when we decide to do so, including as a result of uncertain market conditions, which could adversely affect the return on your investment.

        We expect to hold the various real properties in which we invest until such time as we decide that a sale or other disposition is appropriate given our investment objectives. Our ability to dispose of properties on advantageous terms depends on factors beyond our control, including competition from other sellers and the availability of attractive financing for potential buyers of our properties. We cannot predict the various market conditions affecting real estate investments which will exist at any particular time in the future. Due to the uncertainty of market conditions which may affect the future disposition of our properties, we cannot assure you that we will be able to sell our properties at a profit in the future. Accordingly, the extent to which you will receive cash distributions and realize potential appreciation on our real estate investments will be dependent upon fluctuating market conditions.

        Furthermore, we may be required to expend funds to correct defects or to make improvements before a property can be sold. We cannot assure you that we will have funds available to correct such defects or to make such improvements.

We may acquire properties with "lock-out" provisions which may affect our ability to dispose of the properties.

        We may acquire properties through contracts that could restrict our ability to dispose of the property for a period of time. These "lock-out" provisions could affect our ability to turn our investments into cash and could affect cash available for distributions to you. Lock-out provisions could also impair our ability to take actions during the lock-out period that would otherwise be in the best interest of our shareholders and, therefore, may have an adverse impact on the value of our common stock relative to the value that would result if the lock-out provisions did not exist.

If we sell properties and provide financing to purchasers, defaults by the purchasers would adversely affect our cash flows.

        If we decide to sell any of our properties, we presently intend to use our best efforts to sell them for cash. However, in some instances we may sell our properties by providing financing to purchasers. If we provide financing to purchasers, we will bear the risk that the purchaser may default, which could negatively impact our cash distributions to shareholders and result in litigation and related expenses.

38

Table of Contents

RISK FACTORS

Even in the absence of a purchaser default, the distribution of the proceeds of sales to our shareholders, or their reinvestment in other assets, will be delayed until the promissory notes or other property we may accept upon a sale are actually paid, sold, refinanced or otherwise disposed of.

Risks Related to Our Debt Financings

Our operating results and financial condition could be adversely affected if we are unable to make required payments on our debt.

        Our charter and bylaws do not limit the amount or percentage of indebtedness that we may incur, and we are subject to risks normally associated with debt financing, including the risk that our cash flows will be insufficient to meet required payments of principal and interest. There can be no assurance that we will be able to refinance any maturing indebtedness, that such refinancing would be on terms as favorable as the terms of the maturing indebtedness or that we will be able to otherwise obtain funds by selling assets or raising equity to make required payments on maturing indebtedness.

        In particular, loans obtained to fund property acquisitions will generally be secured by first mortgages on such properties. If we are unable to make our debt service payments as required, a lender could foreclose on the property or properties securing its debt. This could cause us to lose part or all of our investment, which in turn could cause the value of our common stock and distributions payable to shareholders to be reduced. Certain of our existing and future indebtedness is and may be cross-collateralized and, consequently, a default on this indebtedness could cause us to lose part or all of our investment in multiple properties. See "Policies With Respect to Certain Activities—Financing Policies."

Increases in interest rates could increase the amount of our debt payments and adversely affect our ability to make distributions to our shareholders.

        As of December 31, 2010, we had total pro forma outstanding debt of approximately $250.9 million, and we expect that we will incur additional indebtedness in the future. Interest we pay reduces our cash available for distributions. We have entered into interest rate swaps and intend to collateralize other interest rate swaps under our secured corporate revolving credit facility to mitigate the risk of increasing interest rates for our $146.8 million in variable rate debt. Since we have incurred and may continue to incur variable rate debt, increases in interest rates raise our interest costs, which reduces our cash flows and our ability to make distributions to you. If we are unable to refinance our indebtedness at maturity or meet our payment obligations, the amount of our distributable cash flows and our financial condition would be adversely affected, and we may lose the property securing such indebtedness. In addition, if we need to repay existing debt during periods of rising interest rates, we could be required to liquidate one or more of our investments in properties at times which may not permit realization of the maximum return on such investments.

Covenants in our mortgage loans and any future credit facility could limit our flexibility and adversely affect our financial condition or our status as a REIT.

        The terms of our mortgage loans require us to comply with loan-to-collateral-value ratios, debt service coverage ratios and, in the case of an event of default, limitations on the ability of our subsidiaries that are borrowers under our mortgage loans to make distributions to us or our other subsidiaries. We have executed a loan agreement with several financial institutions establishing a $100 million secured corporate revolving credit facility (subject to increase to $200 million under certain circumstances). The credit facility is being held in escrow and will be available upon the closing of this offering and satisfaction of other customary closing conditions. Contemporaneously with the

39

Table of Contents

RISK FACTORS

closing of this offering, we expect to borrow approximately $11.0 million under the credit facility. In addition, in connection with our formation transactions, we will be assuming an existing secured acquisition credit facility from STAG GI that currently has $30.4 million of borrowing capacity and a commitment letter for an additional $65 million secured acquisition credit facility. There is no assurance that we will be able to enter into a definitive agreement relating to the additional acquisition facility that we find acceptable, or at all. Any facility we obtain will likely include a number of additional customary financial and other covenants. Any of our existing loan covenants or future credit facility covenants may limit our flexibility in our operations and prevent us from making distributions to our shareholders, and breaches of these covenants could result in defaults under the instruments governing the applicable indebtedness even if we have satisfied our payment obligations.

        As of December 31, 2010, we had certain secured loans that are cross-collateralized by multiple properties. If we default on any of these loans we may then be required to repay such indebtedness, together with applicable prepayment charges, to avoid foreclosure on all cross-collateralized properties within the applicable pool. Moreover, any future corporate credit facility of ours may contain certain cross-default provisions which are triggered in the event that our other material indebtedness is in default. These cross-default provisions may require us to repay or restructure the facility in addition to any mortgage or other debt that is in default. If our properties were foreclosed upon, or if we are unable to refinance our indebtedness at maturity or meet our payment obligations, the amount of our distributable cash flows and our financial condition would be adversely affected.

        We are a holding company and conduct all of our operations through our operating partnership. We do not have, apart from our ownership of our operating partnership, any independent operations. As a result, we will rely on distributions from our operating partnership to pay any dividends we might declare on our common stock. We will also rely on distributions from our operating partnership to meet our debt service and other obligations, including our obligations to make distributions required to maintain our REIT status. The ability of subsidiaries of our operating partnership to make distributions to the operating partnership, and the ability of our operating partnership to make distributions to us in turn, will depend on their operating results and on the terms of any loans that encumber the properties owned by them. Such loans may contain lockbox arrangements, reserve requirements, financial covenants and other provisions that restrict the distribution of funds. In the event of a default under these loans, the defaulting subsidiary would be prohibited from distributing cash. For example, our subsidiaries are party to mortgage loans that prohibit, in the event of default, their distribution of any cash to a related party, including our operating partnership. As a result, a default under any of these loans by the borrower subsidiaries could cause us to have insufficient cash to make distributions on our common stock required to maintain our REIT status.

If we enter into financing arrangements involving balloon payment obligations, it may adversely affect our ability to make distributions.

        Some of our financing arrangements require us to make a lump-sum or "balloon" payment at maturity. Our ability to make a balloon payment at maturity is uncertain and may depend upon our ability to obtain additional financing or our ability to sell the property. At the time the balloon payment is due, we may or may not be able to refinance the existing financing on terms as favorable as the original loan or sell the property at a price sufficient to make the balloon payment. The effect of a refinancing or sale could affect the rate of return to shareholders and the projected time of disposition of our assets. In addition, payments of principal and interest made to service our debts may leave us with insufficient cash to pay the distributions that we are required to pay to maintain our qualification as a REIT.

40

Table of Contents

RISK FACTORS

High mortgage rates may make it difficult for us to finance or refinance properties, which could reduce the number of properties we can acquire and the amount of cash distributions we can make.

        If mortgage debt is unavailable at reasonable rates, we may not be able to finance the purchase of properties. In addition, we run the risk of being unable to refinance mortgage debt when the loans come due or of being unable to refinance such debt on favorable terms. If interest rates are higher when we refinance such debt, our income could be reduced. We may be unable to refinance such debt at appropriate times, which may require us to sell properties on terms that are not advantageous to us or could result in the foreclosure of such properties. If any of these events occur, our cash flows would be reduced. This, in turn, would reduce cash available for distribution to you and may hinder our ability to raise more capital by issuing more stock or by borrowing more money.

Our hedging strategies may not be successful in mitigating our risks associated with interest rates and could reduce the overall returns on your investment.

        We use various derivative financial instruments to provide a level of protection against interest rate risks, but no hedging strategy can protect us completely. These instruments involve risks, such as the risk that the counterparties may fail to honor their obligations under these arrangements, that these arrangements may not be effective in reducing our exposure to interest rate changes and that a court could rule that such agreements are not legally enforceable. These instruments may also generate income that may not be treated as qualifying REIT income for purposes of the 75% or 95% REIT income tests. In addition, the nature and timing of hedging transactions may influence the effectiveness of our hedging strategies. Poorly designed strategies or improperly executed transactions could actually increase our risk and losses. Moreover, hedging strategies involve transaction and other costs. We cannot assure you that our hedging strategy and the derivatives that we use will adequately offset the risk of interest rate volatility or that our hedging transactions will not result in losses that may reduce the overall return on your investment.

Risks Related to this Offering

The purchase price per share of our common stock may not accurately reflect the future value of our company.

        The purchase price per share of our common stock offered pursuant to this prospectus reflects the result of negotiations between us and the representatives of the underwriters. The purchase price may not accurately reflect the future value of our company, and the offering price may not be realized upon any subsequent disposition of the shares.

Future offerings of debt securities, which would rank senior to our common stock upon liquidation, and future offerings of equity securities, which would dilute our existing shareholders and may be senior to our common stock for the purposes of dividend and liquidating distributions, may adversely affect the market price of our common stock.