Company: ATLN
Filing Date: 2025-12-05
Form Type: S-3
Source: 0001213900-25-118830
Chunk: 9

Company: ATLANTIC INTERNATIONAL CORP.
Filing Date: 2025-12-05
Form: S-3
Chunk 9
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Englewood Cliffs, NJ

Attention: Corporate Secretary

Telephone: (201) 899-4470

<div align='center'>iv

PROSPECTUS SUMMARY</div>

The following summary highlights information contained elsewhere in this prospectus. The summary may not contain all of the information that may be important to you. You should read this entre prospectus carefully, including our financial statements and related notes thereto and the documents incorporated by reference in this prospectus and the risks described below under “Risk factors.” And as described or may be described in any subsequent quarterly report on Form 10-Q or Current Report on Form 8-K, as well as in any applicable prospectus supplement and contained or to be contained in our filings with the SEC and incorporated by reference in this prospectus. We note that our actual results and future events may differ significantly based upon a number of factors. The reader should not put undue reliance on the forward-looking statements in this document, which speak only as of the date on the cover of this prospectus.

In this prospectus, unless otherwise noted, the terms “the Company,” “Atlantic,” “we,” “us,” and “our” refer to Atlantic International Corp.

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

Atlantic International Corp. (“Atlantic”) (Nasdaq: ATLN), through its subsidiaries, is a national strategic staffing firm servicing the commercial, professional, finance, direct placement, and managed service provider verticals. Lyneer was formed under the principles of honesty and integrity, and with the view of becoming the preferred outside employer of choice. Since its formation, the Company has grown from a regional operation to a national staffing firm with offices and geographic reach across the United States. The Company primarily places individuals in accounting and finance, administrative and clerical, information technology, legal, light industrial, and medical roles. Atlantic’s approximately 300 employees generated over $400 million in revenue for the year ended December 31, 2024.

<div align='center'>Corporate Information</div>

We were incorporated in Delaware under the name SeqLL Inc. on April 1, 2014. On June 13, 2024, the Company changed its name from SeqLL Inc. to Atlantic International Corp. On June 4, 2024 the Company, SeqLL Merger LLC, a Delaware limited liability company and wholly-owned subsidiary of the Company (“Purchaser Sub”), Atlantic Acquisition Corp, a Delaware corporation “Atlantic”, Atlantic Merger LLC, a Delaware limited liability company