Company Update

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) July 1, 2025   STURM, RUGER & COMPANY, INC. (Exact Name of Registrant as Specified in its Charter)   Delaware (State or Other Jurisdiction of Incorporation) 001-10435 (Commission File Number) 06-0633559 (IRS Employer Identification Number)   One Lacey Place , Southport , Connecticut 06890 (Address of Principal Executive Offices) (Zip Code)   (203) 259-7843 Registrant’s telephone number, including area code   N/A (Former name or former address, if changed since last report)   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 ( see General Instruction A.2. below): ☐ 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 RGR NYSE   Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). 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. ¨ 1     Item 8.01 Other Events   On July 1, 2025, Sturm, Ruger & Company, Inc. (“the Company”) issued a press release announcing the asset purchase of Anderson Manufacturing, a manufacturer of firearms and firearm accessories based in Hebron, Kentucky. A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and incorporated herein by reference.   Item 9.01 Financial Statements and Exhibits   Exhibit No . Description     99.1 Press release of Sturm, Ruger & Company, Inc., dated July 1, 2025, reporting the asset purchase of Anderson Manufacturing.   Forward-Looking Statements   This Current Report on Form 8-K, including the press release attached hereto, contains “forward-looking” statements that are based on the Company’s beliefs and assumptions and on information currently available to the Company on the date of this Current Report on Form 8-K. Forward-looking statements include all statements that are not historical facts and can be identified by terms such as “anticipate,” “believe,” “continue,” “could,” “design,” “estimate,” “expect,” “may,” “seek,” “should,” “will,” “would” or similar expressions and the negatives of those terms. Forward-looking statements may involve known and unknown risks, uncertainties and other factors that may cause the Company’s actual results, performance or achievements to be materially different from those expressed or implied by the forward-looking statements. These statements include, but are not limited to, statements concerning the integration of the Anderson Manufacturing assets into the business of the Company, including the impact such events may have on the growth, profitability, and financial performance of the Company. Except as required by law, the Company assumes no obligation to update these forward-looking statements publicly, or to update the reasons actual results could differ materially from those anticipated in the forward-looking statements, even if new information becomes available in the future. Further information on factors that could cause the Company’s actual results to differ materially from the results anticipated by the Company’s forward-looking statements is included in the reports the Company has filed with the U.S. Securities and Exchange Commission, including our Annual Report on Form 10-K for the year ended December 31, 2024 and our Quarterly Report on Form 10-Q for the quarterly period ended March 29, 2025. All information provided in this Current Report on Form 8-K is as of July 1, 2025, and the Company undertakes no duty to update this information unless required by law.   2     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.          STURM, RUGER & COMPANY, INC.                                           By: /S/ THOMAS A. DINEEN     Name: Thomas A. Dineen     Title: Principal Financial Officer,        Principal Accounting Officer,        Senior Vice President, Treasurer and       Chief Financial Officer     Dated: July 1, 2025     3