Company: ATLN
Filing Date: 2025-09-17
Form Type: DEFA14A
Source: 0001605888-25-000041
Chunk: 0

Company: ATLANTIC INTERNATIONAL CORP.
Filing Date: 2025-09-17
Form: DEFA14A
Chunk 0
---
### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

#### 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
<div align='center'>the Securities Exchange Act of 1934 (Amendment No. 3)</div>

Filed by the Registrant x

Filed by a Party other than the Registrant o

Check the appropriate box:

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

| ATLANTIC INTERNATIONAL CORP.                     |
| (Name of Registrant as Specified In Its Charter) |

<div align='center'>(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.                                                         |
| o |     | Fee paid previously with preliminary materials                           |
| o |     | Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11. |

<div align='center'>i</div>

#### Atlantic International Corp.

#### 270 Sylvan Avenue, Suite 2230

#### Englewood Cliffs, New Jersey 07632
September 16, 2025

Dear Atlantic International Stockholders:

You are cordially invited to attend the Annual Meeting of Stockholders (the “Annual Meeting”) of Atlantic International Corp. (the “Company”) which will be held on November 7, 2025 at 10:00 A.M. (Eastern Time). You will be able to attend the Annual Meeting, vote your shares of common stock and submit your questions at such meeting via a live webcast available at: https://meeting.vstocktransfer.com/ATLANTICOCTOBER25. The Annual Meeting will be a completely virtual meeting of stockholders which will be conducted exclusively by webcast on the internet. No physical meeting will be held.

Details regarding admission to the meeting and the