Dorman Products, Inc. 10-Q

ITEM 5. Other Information Director and Executive Officer Trading Arrangements The following table describes contracts, instructions, or written plans for the purchase or sale of the Company’s common stock intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) (each, a “Rule 10b5-1 Plan”) entered into or terminated during the quarter ended June 28, 2025, by our directors and officers (as defined under Rule 16b-1(f) of the Exchange Act). There were no non-Rule 27 Table of Contents 10b5-1 trading arrangements entered into or terminated by our directors and officers during the quarter ended March 29, 2025. Name and Title of Director or Officer Date of Adoption of Agreement 1 Expiration Date of Agreement 2 Aggregate Number of Securities to be Purchased or Sold Donna M. Long SVP, Chief Information Officer June 3, 2025 July 31, 2026 6,799 3 1 Rule 10b5-1 Plan (the “Plan”) was effective as of June 3, 2025, and the Plan’s trading schedule was subsequently amended on June 9, 2025. 2 Plan expires upon the date shown or, if earlier, upon completion of all authorized transactions under the Plan. 3 Plan includes (i) the sale of up to 1,500 shares of the Company’s common stock and (ii) the potential exercise of vested stock options and the associated sale of up to 5,299 shares of the Company’s common stock. The actual number of shares sold may be less based on tax withholdings . ITEM 6. Exhibits (a) Exhibits The Exhibits included in this report are listed in the Exhibit Index on page 28 , which is incorporated herein by reference. EXHIBIT INDEX 31.1 Certification of Chief Executive Officer pursuant to Rule 13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. * 31.2 Certification of Chief Financial Officer pursuant to Rule 13a-14(a), as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002. * 32 Certification of Chief Executive Officer and Chief Financial Officer pursuant to 18 U.S.C. Section 1350 as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (furnished with this report). ** 101 The following financial statements from the Dorman Products, Inc. Quarterly Report on Form 10-Q as of and for the quarter ended June 28, 2025, formatted in Inline XBRL (eXtensible Business Reporting Language): (i) the Condensed Consolidated Statements of Operations; (ii) the Condensed Consolidated Balance Sheets; (iii) Condensed Consolidated Statements of Shareholders’ Equity; (iv) the Condensed Consolidated Statements of Cash Flows and (v) the Notes to Condensed Consolidated Financial Statements. 104 The cover page from the Company’s Quarterly Report on Form 10-Q as of and for the quarter ended June 28, 2025, formatted in Inline XBRL (included as Exhibit 101). * Filed herewith ** Furnished herewith 28 Table of Contents 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 thereunto duly authorized. Dorman Products, Inc. August 5, 2025 /s/ Kevin M. Olsen Kevin M. Olsen President, Chief Executive Officer (principal executive officer) August 5, 2025 /s/ David M. Hession David M. Hession Senior Vice President and Chief Financial Officer (principal financial officer) 29