Company: MITN
Filing Date: 2025-03-21
Form Type: DEF 14A
Source: 0001514281-25-000033
Chunk: 0

Company: AG Mortgage Investment Trust, Inc.
Filing Date: 2025-03-21
Form: DEF 14A
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549
<div align='center'>_____________________________________________________________________</div>

#### SCHEDULE 14A
<div align='center'>(Rule 14a-101)</div>

### INFORMATION REQUIRED IN PROXY STATEMENT

#### SCHEDULE 14A INFORMATION

#### Proxy Statement Pursuant to Section 14(a) of the

#### Securities Exchange Act of 1934
<div align='center'>_____________________________________________________________________</div>

Filed by the registrant x Filed by a party other than the registrant ¨

Check the appropriate box:

| ¨ |     | Preliminary Proxy Statement                                                     |
| ¨ |     | Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| x |     | Definitive Proxy Statement                                                      |
| ¨ |     | Definitive Additional Materials                                                 |
| ¨ |     | Soliciting Material Pursuant to §240.14a-12                                     |

#### AG Mortgage Investment Trust, Inc.
<div align='center'>(Name of registrant as specified in its charter)

(Name of person(s) filing proxy statement, if other than the registrant)</div>

Payment of filing fee (Check the appropriate box):

| x |     | No fee required |

| ¨ |     | Fee paid previously with preliminary materials.                                                      |
| ¨ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11. |

#### AG Mortgage Investment Trust, Inc.

#### 245 Park Avenue, 26th Floor

#### New York, New York 10167
<div align='center'>March 21, 2025</div>

Dear Fellow Stockholders:

You are cordially invited to attend the 2025 Annual Meeting of Stockholders (the “Annual Meeting”) of AG Mortgage Investment Trust, Inc., which will be held virtually on Monday, May 5, 2025 at 9:00 a.m., Eastern Time. You will be able to participate in the Annual Meeting, vote, and submit your questions via live webcast by visiting

https://web.lumiconnect.com/201017455. Details of the business to be presented at the meeting can be found in the accompanying Notice of Annual Meeting of Stockholders and proxy statement (the “Proxy Statement”).

Pursuant to rules adopted