Company: INTS
Filing Date: 2025-09-09
Form Type: DEF 14A
Source: 0001567264-25-000090
Chunk: 3

Company: INTENSITY THERAPEUTICS, INC.
Filing Date: 2025-09-09
Form: DEF 14A
Chunk 3
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 Suite 430

#### Shelton, CT 06484

### TABLE OF CONTENTS
|                                                                |     |         PAGE |
| PROXY STATEMENT                                                |     |            1 |
| PROPOSAL NO.1                                                  |     |            6 |
| PROPOSAL NO. 2                                                 |     |           13 |
| SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT |     |           14 |
| ADDITIONAL INFORMATION                                         |     |           16 |
| APPENDIX A                                                     |     | Appendix A-1 |
| APPENDIX B                                                     |     | Appendix B-1 |

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#### Intensity Therapeutics, Inc.

#### 1 Enterprise Drive, Suite 430

#### Shelton, CT 06484

### PROXY STATEMENT

### FOR THE SPECIAL MEETING OF STOCKHOLDERS

#### TO BE HELD ON OCTOBER 22, 2025
This proxy statement (the “Proxy Statement”) is furnished to stockholders of Intensity Therapeutics, Inc., a Delaware corporation (the “Company,” “we,” “us,” or “our”), in connection with the solicitation of proxies by our board of directors for use at a special meeting of stockholders to be held on October 22, 2025, and at any adjournment or postponement thereof (our “Special Meeting”). Our Special Meeting will be held at 10:30a.m. Eastern time via a live audio webcast at www.virtualshareholdermeeting.com/INTS2025SM.

On or about September 9, 2025, we will commence mailing of the proxy materials which are also available at www.proxyvote.com. The proxy materials are being sent to stockholders who owned our common stock at the close of business on August 29, 2025, the record date for the Special Meeting (the “Record Date”). This Proxy Statement contains important information for you to consider when deciding how to vote on the matters brought before the meeting. Please read it carefully.

#### Why am I receiving these materials?
We sent you this Proxy Statement because our board of directors is soliciting your proxy to vote at our Special Meeting. This Proxy Statement summarizes the information you need to vote at our Special Meeting. You do not need to attend our Special Meeting to vote your shares.

What proposals will be voted on at the Special Meeting?

Stockholders will vote on two proposals at the Special Meeting:

1.