Shareholder Vote

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 8-K   CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of report (date of earliest event reported): April 28, 2026   ACME UNITED CORPORATION (Exact name of registrant as specified in its charter)     Connecticut 001-07698 06-0236700 (State or other jurisdiction of incorporation or organization) (Commission file number) (I.R.S. Employer Identification No.) 1 Waterview Dr , Shelton , Connecticut   06484 (Address of principal executive offices)   (Zip Code) Registrant’s telephone number, including area code: ( 203 ) 254-6060 Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:     ☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)   ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)   ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))   ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) Securities registered pursuant to Section 12(b) of the Act:   Title of each class   Trading Symbol(s)   Name of each exchange on which registered Common Stock, $2.50 par value per share   ACU   NYSE American   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter). Emerging growth company ☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐         ITEM 5.07. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS   Set forth below are the results of the matters submitted for a vote of the shareholders at the Company's 2026 Annual Meeting of Shareholders held on April 27, 2026.   Proposal 1 - Election of Directors   Directors Votes For Votes Withheld Walter C. Johnsen 2,875,292 8,321 Richmond Y. Holden          2,453,243 430,370 Brian S. Olschan          2,875,502 8,111 Susan H. Murphy          2,830,061 53,552 Rex L. Davidson 2,827,861 55,752 Brian K. Barker 2,874,498 9,115 Paul J. Conway 2,869,174 14,439     Proposal 2 – Amendment to the 2022 Employee Stock Option Plan. The shareholders approved the amendment to the 2022 Employee Stock Option Plan           Votes For Votes Against Abstained Broker Non- Votes   1,951,474 925,794 6,345 537,097   Proposal 3 – Adoption of a Non-Binding Resolution to Approve the Compensation of our Named Executive Officers   The shareholders approved the Advisory vote to Approve Executive Compensation.           Votes For Votes Against Abstained Broker Non-Votes    2,775,611 102,051 5,951 537,097   Proposal 4- Ratification of the Appointment of CBIZ CPA's, P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2026. The shareholders approved the proposal to ratify the appointment of CBIZ CPA's P.C. as our independent registered public accounting firm for the fiscal year ending December 31, 2026.         Votes For Votes Against Abstained 3,413,803 4,534 2,367     SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.   ACME UNITED CORPORATION   By /s/ Walter C. Johnsen Walter C. Johnsen Chairman and Chief Executive Officer Dated: April 28, 2026 By /s/ Paul G. Driscoll Paul G. Driscoll Vice President and Chief Financial Officer Dated: April 28, 2026