TPG Mortgage Investment Trust, Inc.

FOR

2026 ANNUAL MEETING OF STOCKHOLDERS

TO BE HELD ON APRIL 27, 2026

This proxy statement (the “Proxy Statement”) is being furnished in connection with the solicitation of proxies by the Board of Directors (the “Board”) of TPG Mortgage Investment Trust, Inc., a Maryland corporation (the “Company,” “we,” “us” or “our”), for use at our 2026 Annual Meeting of Stockholders (the “Annual Meeting”) to be held virtually on Monday, April 27, 2026 at 9:00 a.m., Eastern Time. Any reference herein to attending the Annual Meeting, including any reference to “in-person” attendance, means attending by remote communication via live webcast on the Internet.

Like an in-person meeting, you can vote and submit questions during the Annual Meeting by visiting

https://edge.media-server.com/mmc/p/3fiotaf5. You must have your 11-Digit Control Number in order to access the Annual Meeting. The Proxy Statement, proxy card, and our 2025 Annual Report to Stockholders (the “Annual Report”) will be distributed or made available on or about March 16, 2026 to stockholders of record as of the close of business on March 6, 2026 (the “Record Date”).