Exhibit 99.1

AG Mortgage Investment Trust, Inc. Reports Fourth Quarter Earnings

NEW YORK, NY, March 1, 2012 / BusinessWire — AG Mortgage Investment Trust, Inc. (“MITT” or the “Company”) (NYSE: MITT) today reported net income for the quarter ended December 31, 2011 of $5.8 million and net book value of $20.52 per share.

FINANCIAL HIGHLIGHTS

INVESTMENT HIGHLIGHTS

FOURTH QUARTER 2011 AND PERIOD ENDED DECEMBER 31, 2011 RESULTS

AG Mortgage Investment Trust, Inc. is an actively managed REIT that opportunistically invests in a diversified risk-adjusted portfolio of Agency RMBS, Non-Agency RMBS, CMBS and ABS. For the fourth quarter, the Company had net income of $5.8 million, or $0.58 per diluted share, and Core Earnings of $6.5 million, or $0.65 per diluted share. For the period from March 7, 2011 to December 31, 2011, the Company had net income of $19.0 million, or $3.20 per diluted share (7), and for the period from July 6, 2011 to December 31, 2011 (“period ended December 31, 2011”), the Company had Core Earnings of $12.4 million, or $1.24 per diluted share. Core Earnings represents a non-GAAP financial measure and is defined as net income (loss) excluding (i) net realized gain (loss) on investments and terminations on derivative contracts and (ii) net unrealized appreciation (depreciation) on investments and derivative contacts. (See “Non-GAAP Financial Measure” below for further detail on Core Earnings)

David Roberts, Chief Executive Officer, commented “We are pleased to announce our fourth quarter earnings. During the quarter, Core Earnings increased to $0.65 per share and we announced our first full quarter dividend of $0.70 per share. In addition to meeting our financial goals, we continued to diversify funding relationships and in January we were able to successfully complete an equity raise which has improved our stock’s liquidity. We are proud of our accomplishments over the last two quarters and look forward to the opportunities ahead.”

“Amidst uncertainty in the global markets, European liquidity difficulties and year-end funding pressures, we continued to optimize our Agency portfolio, opportunistically rotate the credit portfolio and retain capital for potential market dislocations,” said Jonathan Lieberman, Chief Investment Officer. “While Agency RMBS yields have compressed, we believe the low interest rate environment and a carefully selected investment portfolio will continue to support attractive risk-adjusted returns. Over the course of the quarter, we rotated a significant portion of the Agency portfolio into securities with more favorable prepayment attributes to further mitigate prepayment risk. Allocations to credit securities were concentrated in less volatile short duration Non-Agency securities and CMBS tranches with superior intrinsic value. We believe MITT is well positioned to continue to produce sustainable returns and take advantage of the opportunities ahead in both the Agency RMBS and credit markets. With the success of the European Central Bank’s Long-Term Refinancing Operation, funding risks have materially declined and we anticipate deploying capital in a more aggressive style. New capital from our January equity transaction allows greater latitude to the investment team to selectively increase our capital allocation to credit opportunities.”

KEY STATISTICS (2)

INVESTMENT PORTFOLIO

The following summarizes the Company’s investment portfolio as of December 31, 2011 (2):

As of December 31, 2011, the weighted average yield on the Company’s investment portfolio was 3.16% and its weighted average cost of funds was 0.91%. This resulted in a net interest margin of 2.25% as of December 31, 2011. (6)

The CPR for the Agency RMBS portfolio was 5.0% for the fourth quarter and 5.0% for the month of December 2011. (5)

The weighted average cost basis of the Agency investment portfolio, excluding interest-only securities, was 103.5% as of December 31, 2011. The amortization of premiums (net of any accretion of discounts) on Agency securities for the fourth quarter was $1.9 million, or $(0.19) per share. The unamortized net Agency premium as of December 31, 2011 was $42.0 million.

Premiums and discounts associated with purchases of the Company’s securities are amortized or accreted into interest income over the estimated life of such securities, using the effective yield method. Since the cost basis of the Company’s Agency securities, excluding interest-only securities, exceeds the underlying principal balance by 3.5% as of December 31, 2011, slower actual and projected prepayments can have a meaningful positive impact, while faster actual or projected prepayments can have a meaningful negative impact on the Company’s asset yields.

We have also entered into “to-be-announced” (“TBA”) positions to facilitate the future purchase of Agency RMBS. Under the terms of these TBAs, the Company agrees to purchase, for future delivery, Agency RMBS with certain principal and interest specifications and certain types of underlying collateral, but the particular Agency RMBS to be delivered are not identified until shortly before (generally two days) the TBA settlement date. At December 31, 2011, we had $100 million net notional amount of TBA positions with a net weighted average purchase price of 103.8%. As of December 31, 2011, our TBA portfolio had a net weighted average yield at purchase of 3.01% and a net weighted average settlement date of February 5, 2012. We have recorded derivative assets of $1.4 million and derivative liabilities of $0.5 million, reflecting these TBA positions.

LEVERAGE AND HEDGING ACTIVITIES

The investment portfolio is financed with repurchase agreements as of December 31, 2011 as summarized below:

As of December 31, 2011, the Company had entered into repurchase agreements with twenty-one counterparties. We continue to rebalance our exposures to counterparties and add new counterparties.

We have entered into interest rate swap agreements to hedge our portfolio. The Company’s swaps as of December 31, 2011 are summarized as follows:

TAXABLE INCOME

The primary differences between taxable income and GAAP net income include (i) unrealized gains and losses associated with investment and derivative portfolios are marked-to-market in current income for GAAP purposes, but excluded from taxable income until realized or settled, (ii) temporary differences related to amortization of net premiums paid on investments (iii) the timing and amount of deductions related to stock-based compensation and (iv) excise taxes. As of December 31, 2011, the Company had undistributed taxable income of approximately $0.46 per share.

DIVIDEND

On December 14, 2011, the Company declared a dividend of $0.70 per share of common stock to stockholders of record as of December 30, 2011 and paid such dividend on January 27, 2012. The Company declared dividends of $1.10 per share for the period ended December 31, 2011.

SUBSEQUENT EVENT

On January 24, 2012, the Company completed a follow-on offering of 5,000,000 shares of its common stock and subsequently issued an additional 750,000 shares of common stock pursuant to the underwriters’ over-allotments at a price of $19.00 per share, for gross proceeds of approximately $109.3 million. Net proceeds to the Company from the offerings were approximately $104.1 million, net of issuance costs of approximately $5.2 million.

SHAREHOLDER CALL

The Company invites shareholders, prospective shareholders and analysts to attend MITT’s fourth quarter earnings conference call on March 1, 2012 at 11:00 am Eastern Time. The shareholder call can be accessed by dialing (888) 424-8151 (U.S. domestic) or (847) 585-4422 (international). Please enter code number 8732511#.

A presentation will accompany the conference call and will be available on the Company’s website at www.agmit.com. Select the Q4 2011 Earnings Presentation link to download and print the presentation in advance of the shareholder call.

An audio replay of the shareholder call combined with the presentation will be made available on our website after the call. The replay will be available until midnight on March 15, 2012. If you are interested in hearing the replay, please dial (888) 843-7419 (U.S. domestic) or (630) 652-3042 (international). The conference ID number is 8732511#.

For further information or questions, please contact Allan Krinsman, the Company’s General Counsel, at (212) 883-4180 or akrinsman@angelogordon.com.

ABOUT AG MORTGAGE INVESTMENT TRUST, INC.

AG Mortgage Investment Trust, Inc. is a real estate investment trust that invests in, acquires and manages a diversified portfolio of residential mortgage assets, other real estate-related securities and financial assets. AG Mortgage Investment Trust, Inc. is externally managed and advised by AG REIT Management, LLC, a subsidiary of Angelo, Gordon & Co., L.P., an SEC-registered investment adviser that specializes in alternative investment activities.

Additional information can be found on the Company’s website at www.agmit.com.

ABOUT ANGELO, GORDON & CO.

Angelo, Gordon & Co. was founded in 1988 and has approximately $22 billion under management. Currently, the firm’s investment disciplines encompass five principal areas: (i) distressed debt and leveraged loans, (ii) real estate, (iii) mortgage-backed securities and other structured credit, (iv) private equity and special situations and (v) a number of hedge fund strategies. Angelo, Gordon & Co. employs over 250 employees, including more than 90 investment professionals, and is headquartered in New York, with associated offices in Amsterdam, Chicago, Los Angeles, London, Hong Kong Seoul, Shanghai, Sydney and Tokyo.

FORWARD LOOKING STATEMENTS

This press release includes “forward-looking statements” within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995. Forward-looking statements are based on estimates, projections, beliefs and assumptions of management of the Company at the time of such statements and are not guarantees of future performance. Forward-looking statements involve risks and uncertainties in predicting future results and conditions. Actual results could differ materially from those projected in these forward-looking statements due to a variety of factors, including, without limitation, changes in interest rates, changes in the yield curve, changes in prepayment rates, the availability and terms of financing, changes in the market value of our assets, general economic conditions, market conditions, conditions in the market for Agency securities, and legislative and regulatory changes that could adversely affect the business of the Company. Additional information concerning these and other risk factors are contained in the

Company’s most recent filings with the Securities and Exchange Commission (“SEC”). Copies are available on the SEC’s website, http://www.sec.gov/. The Company does not undertake or accept any obligation or undertaking to release publicly any updates or revisions to any forward-looking statements to reflect any change in its expectations or any change in events, conditions or circumstances on which any such statement is based.

AG Mortgage Investment Trust, Inc. and Subsidiaries

Consolidated Balance Sheets

AG Mortgage Investment Trust, Inc. and Subsidiaries

Consolidated Statements of Operations

(Unaudited)

Non-GAAP Financial Measure

This press release contains Core Earnings, a non-GAAP financial measure. AG Mortgage Investment Trust’s management believes that this non-GAAP measure, when considered with GAAP, provides supplemental information useful in evaluating the results of the Company’s operations. This non-GAAP measure should not be considered a substitute, or superior to, the financial measures calculated in accordance with GAAP. Our GAAP financial results and the reconciliations from these results should be carefully evaluated.

Core Earnings are defined by the Company as net income excluding both realized and unrealized gains (losses) on the sale or termination of securities, including underlying linked transactions and derivatives. As defined, Core Earnings include the net interest earned on these transactions, including credit derivatives, linked transactions, inverse Agency securities, interest rate derivatives or any other investment activity that may earn net interest. One of the objectives of the Company is to generate net income from net interest margin on the portfolio and management uses Core Earnings to measure this objective.

A reconciliation of GAAP net income to Core Earnings for the quarter and period ended December 31, 2011 is set forth below:

Footnotes