Organization and Nature of Operations	3 Months Ended
Mar. 31, 2026
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Organization and Nature of Operations	Note 1: Organization and Nature of Operations On June 18, 2024 (the “Closing Date”), Atlantic International Corp (“Atlantic” or the “Company,” formerly known as SeqLL Inc.) completed the acquisition (the “Merger”) of Lyneer Investments LLC and its operating subsidiaries, including Lyneer Staffing Solutions, LLC (collectively, “Lyneer”). On January 23, 2026, the Company completed the acquisition (“Circle8 Closing Date” or the “Circle8 Acquisition”) of Circle8 Group B.V. (“Circle8”). See Note 2: Merger and Acquisition for further information. The Company was incorporated in Delaware under the name SeqLL Inc. on April 1, 2014. The Company historically operated as a commercial-stage life science instrumentation and research services company engaged in development of scientific assets and novel intellectual property across multiple “Omics” fields. Pursuant to the terms and conditions of the Amended and Restated Agreement and Plan of Reorganization dated as of June 4, 2024, as amended (the “Merger Agreement”), all of the legacy SeqLL business operations were sold to SeqLL Omics, a newly formed company owned by our former employees and management. Our operating business became that of Lyneer and our corporate headquarters were relocated to 270 Sylvan Avenue, Suite 2230, Englewood Cliffs, New Jersey 07632. Lyneer Investments, LLC (“Lyneer Investments”) is a limited liability company formed in the State of Delaware on January 9, 2018. Lyneer Investments is owned by its members and is now a wholly-owned subsidiary of the Company. The members of Lyneer Investments have limited personal liability for the obligations and debts of Lyneer Investments under Delaware law. Lyneer Holdings, Inc. (“Lyneer Holdings”), a wholly-owned subsidiary of Lyneer Investments, and Lyneer Staffing Solutions, LLC (“LSS”), a wholly-owned subsidiary of Lyneer Holdings, were also incorporated and formed, respectively, in the State of Delaware on January 9, 2018. Lyneer Investments, Lyneer Holdings, and LSS are collectively referred to herein as “Lyneer.” Circle8 was formed in 1987, under the laws of the Netherlands. Until its acquisition by Atlantic on January 23, 2026, Circle8 was owned by Axiom Partners GmbH (“Axiom”), which, in turn, is 100% owned by Mr. Guus Franke. Mr. Franke became Executive Chairman of the Board upon the completion of the Circle8 Acquisition. In the United States of America (“USA”), the Company specializes in the placement of temporary and temporary-to-permanent labor across various industries. The Company primarily places individuals in accounting and finance, administrative and clerical, information technology, legal, light industrial, and medical roles. The Company is also a leading provider of productivity consulting and workforce management solutions. The Company has more than one hundred locations throughout the USA. In Europe, the Company specializes in workforce solutions to enterprises, technology companies, financial institutions, and public-sector organizations. Circle8 focuses on sourcing, deploying, and managing highly skilled professionals in information technology and related digital disciplines. Circle8 is one of the fastest-growing IT and technology staffing companies, operating across Europe through a portfolio of specialized brands. Circle8 manages approximately 8,500 technology professionals and specializes in software development, data analytics, cybersecurity, project management, and emerging technologies. On October 29, 2024, the Company formed a subsidiary in Delaware. This inactive subsidiary is named A36 Merger Sub, Inc. and all 100 shares of its common stock are owned by the Company.

On June 18, 2024 (the “Closing Date”), Atlantic International Corp (“Atlantic” or the “Company,” formerly known as SeqLL Inc.) completed the acquisition (the “Merger”) of Lyneer Investments LLC and its operating subsidiaries, including Lyneer Staffing Solutions, LLC (collectively, “Lyneer”). On January 23, 2026, the Company completed the acquisition (“Circle8 Closing Date” or the “Circle8 Acquisition”) of Circle8 Group B.V. (“Circle8”). See Note 2: Merger and Acquisition for further information.

The Company was incorporated in Delaware under the name SeqLL Inc. on April 1, 2014. The Company historically operated as a commercial-stage life science instrumentation and research services company engaged in development of scientific assets and novel intellectual property across multiple “Omics” fields. Pursuant to the terms and conditions of the Amended and Restated Agreement and Plan of Reorganization dated as of June 4, 2024, as amended (the “Merger Agreement”), all of the legacy SeqLL business operations were sold to SeqLL Omics, a newly formed company owned by our former employees and management. Our operating business became that of Lyneer and our corporate headquarters were relocated to 270 Sylvan Avenue, Suite 2230, Englewood Cliffs, New Jersey 07632.

Lyneer Investments, LLC (“Lyneer Investments”) is a limited liability company formed in the State of Delaware on January 9, 2018. Lyneer Investments is owned by its members and is now a wholly-owned subsidiary of the Company. The members of Lyneer Investments have limited personal liability for the obligations and debts of Lyneer Investments under Delaware law. Lyneer Holdings, Inc. (“Lyneer Holdings”), a wholly-owned subsidiary of Lyneer Investments, and Lyneer Staffing Solutions, LLC (“LSS”), a wholly-owned subsidiary of Lyneer Holdings, were also incorporated and formed, respectively, in the State of Delaware on January 9, 2018. Lyneer Investments, Lyneer Holdings, and LSS are collectively referred to herein as “Lyneer.”

Circle8 was formed in 1987, under the laws of the Netherlands. Until its acquisition by Atlantic on January 23, 2026, Circle8 was owned by Axiom Partners GmbH (“Axiom”), which, in turn, is 100% owned by Mr. Guus Franke. Mr. Franke became Executive Chairman of the Board upon the completion of the Circle8 Acquisition.

In the United States of America (“USA”), the Company specializes in the placement of temporary and temporary-to-permanent labor across various industries. The Company primarily places individuals in accounting and finance, administrative and clerical, information technology, legal, light industrial, and medical roles. The Company is also a leading provider of productivity consulting and workforce management solutions. The Company has more than one hundred locations throughout the USA.

In Europe, the Company specializes in workforce solutions to enterprises, technology companies, financial institutions, and public-sector organizations. Circle8 focuses on sourcing, deploying, and managing highly skilled professionals in information technology and related digital disciplines. Circle8 is one of the fastest-growing IT and technology staffing companies, operating across Europe through a portfolio of specialized brands. Circle8 manages approximately 8,500 technology professionals and specializes in software development, data analytics, cybersecurity, project management, and emerging technologies.