RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On July 23, 2026, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2026. A copy of the press release is attached as Exhibit 99.1 to this current report.

CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT. The information set forth in

TERMINATION OF A MATERIAL DEFINITIVE AGREEMENT The information set forth under

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT On July 15, 2026 Acme United Corporation (the “Company”) entered into a new $65 million syndicated credit facility with HSBC Bank USA, National Association. (HSBC) and City National Bank, a U.S. subsidiary of Royal Bank of Canada. The new facility, which replaces the Company’s prior $65 million credit facility with HSBC that was scheduled to expire on May 31, 2027, is intended to provide liquidity for growth, acquisitions, dividends, and other busine…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On April 23, 2026, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On February 26, 2026, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended December 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this current report.

COMPLETION OF ACQUISITION OR DISPOSITION OF ASSETS. On January 15, 2026, Acme United Corporation (the “Company”) announced that it had entered into and closed a transaction pursuant to an Asset Purchase Agreement (the “Agreement”) dated January 15, 2026 with SLED Distribution, LLC. d/b/a "My Medic" (“My Medic”), a leading supplier of tactical, trauma and emergency response products, primarily in the direct-to-consumer channel and Rapid Medical, LLC (“Rapid Medical” and, together with My Medic…

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT. See the disclosure in

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On October 21, 2025, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On July 23, 2025, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2025. A copy of the press release is attached as Exhibit 99.1 to this current report.

CREATION OF A DIRECT FINANCIAL OBLIGATION OR AN OBLIGATION UNDER AN OFF-BALANCE SHEET ARRANGEMENT OF A REGISTRANT. The information set forth in

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT Effective as of June 26, 2025, Acme United Corporation (the “Company”) entered into Amendment No. 11 to the Loan and Security Agreement dated as of April 5, 2012, as amended (the ”Loan Agreement”), between the Company and HSBC Bank USA, N.A. Amendment No. 11 extends the scheduled maturity of the $65 million dollar secured revolving credit facility under the Loan Agreement from May 31, 2026 to May 31, 2027. The terms of the Loan Agreement otherwise re…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On April 17, 2025, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2025. A copy of the press release is attached as Exhibit 99.1 to this current report.

Changes in Registrant’s Certifying Accountant. (a) Resignation of Independent Registered Public Accounting Firm On November 1, 2024, CBIZ CPAs P.C. (“CBIZ”) acquired the attest business of Marcum LLP (“Marcum”). On March 24, 2025, Marcum informed Acme United Corporation (the “Company”) that Marcum resigned as the Company’s independent registered public accounting firm as a result of such acquisition. The audit report of Marcum on the Company’s consolidated financial statements as of and for t…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On February 28, 2025, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended December 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On October 18, 2024, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. Acme United Corporation earlier today issued its earnings release for the quarter ended June 30, 2024 and filed the earnings release in a Current Report on a Form 8-k. The Company is filing this amendment to the Current Report on Form 8-K filed earlier today to correct a historical net sales amount for the quarter ended June 30, 2023 in the "CONDENSED CONSOLIDATED STATEMENTS OF INCOME" table. The "Net sales" figure for "Three Months Ended June 30…

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On July 19, 2024, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2024. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On April 19, 2024, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On March 1, 2024, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended December 31, 2023. A copy of the press release is attached as Exhibit 99.1 to this current report.

COMPLETION OF ACQUISITION OR DISPOSITION OF ASSETS. On November 1, 2023, Acme United Corporation (the “Company”) entered into an Asset Purchase Agreement to sell the assets of its Camillus Cutlery and Cuda business lines to GSM Holdings, Inc. Below is a summary of the terms of such transaction. The sections below describe selected provisions of the Asset Purchase Agreement and certain ancillary documents but do not purport to describe all of the terms thereof. The following summary is qualifi…

ENTRY INTO A MATERIAL DEFINITIVE AGREEMENT. See the disclosure in

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On October 23, 2023, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended September 30, 2023. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On July 21, 2023, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended June 30, 2023. A copy of the press release is attached as Exhibit 99.1 to this current report.

RESULTS OF OPERATIONS AND FINANCIAL CONDITION. On April 21, 2023, Acme United Corporation (the “Company”) issued a press release announcing its financial results for the quarter ended March 31, 2023. A copy of the press release is attached as Exhibit 99.1 to this current report.