Exhibit 99.1

AG Mortgage Investment Trust, Inc. Reports Second Quarter 2017 Results

NEW YORK, NY, August 8, 2017 / Business Wire — AG Mortgage Investment Trust, Inc. (“MITT” or the “Company”) (NYSE: MITT) today reported financial results for the quarter-ended June 30, 2017. AG Mortgage Investment Trust, Inc. is a hybrid mortgage REIT that opportunistically invests in a diversified risk-adjusted portfolio of Agency RMBS and Credit Investments, which include our Residential Investments, Commercial Investments and ABS Investments.

SECOND QUARTER 2017 FINANCIAL HIGHLIGHTS

INVESTMENT HIGHLIGHTS

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SECOND QUARTER ACTIVITY

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MANAGEMENT REMARKS

“We are pleased with MITT’s performance during the second quarter,” said Chief Executive Officer and Chief Investment Officer, David Roberts. “We increased core earnings by redeploying excess liquidity into Agency RMBS and increased book value per share. Going forward, we believe MITT is well positioned to produce sustainable returns and to leverage the expertise and experience of the Angelo, Gordon platform to invest in a wide range of assets.”

“The second quarter theme for mortgage and asset-backed markets was mostly unchanged from the start of the year, as credit spreads continued to rally due to strong demand and stable fundamentals,” said Co-Portfolio Manager, TJ Durkin. “Agency MBS spreads were relatively stable during the second quarter despite increased discussion of the Federal Reserve slowing the pace of its balance sheet reinvestment program. The growing likelihood of this event commencing later this year resulted in Agency MBS underperforming most other structured products. However, the favorable backdrop of a range bound interest rate environment and falling implied interest rate volatility supported the team’s deployment of capital into the sector at attractive returns.”

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KEY STATISTICS

INVESTMENT PORTFOLIO

The following summarizes the Company’s investment portfolio as of June 30, 2017 ^{(2) (3)}

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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. The Company recorded a $0.2 million, or $(0.01) per share, retrospective adjustment due to the change in projected cash flows on its Agency RMBS, excluding interest-only securities and TBAs. Since the cost basis of the Company’s Agency RMBS securities, excluding interest-only securities and TBAs, exceeds the underlying principal balance by 3.9% as of June 30, 2017, 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.

FINANCING AND HEDGING ACTIVITIES

The Company, either directly or through its equity method investments in affiliates, had master repurchase agreements with 39 counterparties, under which it had debt outstanding with 26 counterparties as of June 30, 2017. The weighted average funding cost was 1.3% for Agency RMBS and 2.6% for Credit Investments. The investment portfolio is financed with repurchase agreements as of June 30, 2017 as summarized below:

The Company’s hedge portfolio as of June 30, 2017 is summarized as follows:

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The Company’s interest rate swaps as of June 30, 2017 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 which 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 premiums and discounts paid on investments, (iii) the timing and amount of deductions related to stock-based compensation, (iv) temporary differences related to the recognition of certain terminated derivatives and (v) taxes. As of June 30, 2017, the Company had estimated undistributed taxable income of approximately $1.74 per share.^(1)(12)

DIVIDEND

On June 8, 2017, the Company’s board of directors declared the second quarter dividend of $0.475 per share of common stock that was paid on July 31, 2017 to stockholders of record as of June 19, 2017.

On May 15, 2017, the Company’s board of directors declared a quarterly dividend of $0.51563 per share on its 8.25% Series A Cumulative Redeemable Preferred Stock and a quarterly dividend on its $0.50 per share of 8.00% Series B Cumulative Redeemable Preferred Stock. The preferred distributions were paid on June 19, 2017 to stockholders of record as of May 31, 2017.

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STOCKHOLDER CALL

The Company invites stockholders, prospective stockholders and analysts to participate in MITT’s second quarter earnings conference call on August 9, 2017 at 9:30 am Eastern Time. The stockholder call can be accessed by dialing (888) 424-8151 (U.S. domestic) or (847) 585-4422 (international). Please enter code number 6106747.

A presentation will accompany the conference call and will be available on the Company’s website at www.agmit.com. Select the Q2 2017 Earnings Presentation link to download and print the presentation in advance of the stockholder call.

An audio replay of the stockholder call combined with the presentation will be made available on our website after the call. The replay will be available until September 8, 2017. 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 6106747.

For further information or questions, please e-mail ir@agmit.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 and commercial 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., L.P. is a privately held limited partnership founded in November 1988. The firm currently manages approximately $28 billion with a primary focus on credit and real estate strategies. Angelo, Gordon has over 420 employees, including more than 160 investment professionals, and is headquartered in New York, with offices in the US, Europe and Asia. For more information, visit www.angelogordon.com.

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 related to dividends, our strategy related to our investments and portfolio, taxes, liquidity and our assets. 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, conditions in the market for Agency

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RMBS, Non-Agency RMBS, ABS and CMBS securities and loans, 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 filings with the Securities and Exchange Commission (“SEC”). Copies are available free of charge on the SEC’s website, http://www.sec.gov/, including its most recent Annual Report on Form 10-K and subsequent filings. All information in this press release is as of August 8, 2017. The Company undertakes no duty to update 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.

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AG Mortgage Investment Trust, Inc. and Subsidiaries

Consolidated Balance Sheets

(Unaudited)

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AG Mortgage Investment Trust, Inc. and Subsidiaries

Consolidated Statements of Operations

(Unaudited)

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NON-GAAP FINANCIAL MEASURE

This press release contains Core Earnings, a non-GAAP financial measure. AG Mortgage Investment Trust, Inc.’s management believes that this non-GAAP measure, when considered with the Company’s GAAP financials, provides supplemental information useful for investors in evaluating the results of the Company’s operations. The Company’s presentation of Core Earnings may not be comparable to similarly-titled measures of other companies, who may use different calculations. This non-GAAP measure should not be considered a substitute for, 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.

We define Core Earnings, a non-GAAP financial measure, as net income available to common stockholders excluding both unrealized and realized gains/(losses) on the sale or termination of securities and the related tax expense/benefit or disposition expense, if any, on such sale or termination including (i) investments held in affiliated entities and (ii) derivatives. As defined, Core Earnings include the net interest and other income earned on our investments on a yield adjusted basis, including credit derivatives, investments in debt and equity of affiliates, inverse Agency Interest-Only securities, interest rate derivatives, TBA drop income or any other investment activity that may earn or pay net interest or its economic equivalent. One of our objectives is to generate net income from net interest margin on the portfolio, and management uses Core Earnings to measure this objective. Management believes that this non-GAAP measure, when considered with the Company’s GAAP financials, provides supplemental information useful for investors in evaluating our results of operations. This metric, in conjunction with related GAAP measures, provides greater transparency into the information used by our management in its financial and operational decision-making.

A reconciliation of GAAP net income to Core Earnings for the three months ended June 30, 2017 and the three months ended June 30, 2016 is set forth below:

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Footnotes

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