TPG Mortgage Investment Trust, Inc.

proxy statement of MITT and CHMI (the “joint proxy statement/prospectus”). The joint proxy statement/prospectus will contain important information about MITT, CHMI, the proposed Merger and related matters. MITT and CHMI also expect to file with the SEC other documents regarding the Merger. The Merger will be submitted to the stockholders of CHMI for their consideration. Issuance of MITT stock in the Merger will be submitted to the stockholders of MITT for consideration. The definitive joint proxy statement/prospectus will be sent to the stockholders of MITT and CHMI, and will contain important information about MITT, CHMI, the proposed Merger and related matters. This communication is not a substitute for any proxy statement, registration statement, tender or exchange offer statement, prospectus or other document MITT or CHMI may file with the SEC in connection with the proposed Merger and related matters. INVESTORS AND SECURITY HOLDERS ARE ADVISED TO READ THE REGISTRATION STATEMENT ON FORM S-4 AND THE RELATED JOINT PROXY STATEMENT/PROSPECTUS (INCLUDING ALL AMENDMENTS AND SUPPLEMENTS THERETO) AND OTHER RELEVANT DOCUMENTS FILED BY MITT AND CHMI WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT MITT, CHMI AND THE PROPOSED MERGER. Investors and security holders may obtain copies of these documents free of charge (if and when they become available) through the website maintained by the SEC at www.sec.gov. Copies of the documents filed by MITT with the SEC are also available free of charge on MITT’s website at www.mitt.tpg.com. Copies of the documents filed by CHMI with the SEC are also available free of charge on CHMI’s website at www.chmireit.com. Participants in the Solicitation Relating to the Merger MITT, CHMI and certain of their respective directors and executive officers and certain other affiliates of MITT and CHMI may be deemed to be participants in the solicitation of proxies from the common stockholders of CHMI and MITT in respect of the proposed Merger. Information regarding CHMI and its directors and executive officers and their ownership of common stock of CHMI can be found in CHMI’s Annual Report on Form 10-K for the fiscal year ended December 31, 2025, filed with the SEC on March 5, 2026, and in its definitive proxy statement relating to its 2026