Donna M. Long - 17 Aug 2026 Form 4 Insider Report for Dorman Products, Inc. (DORM)

Reporting relationship: SVP, CIO
Issuer ticker: DORM
Reported as of: 17 Aug 2026
Net transaction value: -$99,244
SEC form: 4
Accepted by SEC: 18 Aug 2026, 16:10:33 UTC
Prior SEC filing: 16 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Frank J. Mahr, by Power of Attorney

Key filing fact

Donna M. Long filed Form 4 for Dorman Products, Inc. (DORM) on 18 Aug 2026.

Key facts

This page summarizes Donna M. Long's Form 4 filing for Dorman Products, Inc. (DORM).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 18 Aug 2026, 16:10.

Change

Previous filing in this sequence was filed on 16 Mar 2026.
Current net transaction value: -$99,244.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001931700 Primary reporting owner

Long Donna M.

Relationship: SVP, CIO
Address: C/O DORMAN PRODUCTS, INC., 3400 EAST WALNUT STREET, COLMAR
Signature: /s/ Frank J. Mahr, by Power of Attorney
Signature date: 18 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

DORM transaction

Common Stock

Sale

Transaction value: $99,244
Shares: -734
Change %: -3.7%
Price: $135.21
Shares after: 19,339
Date: 17 Aug 2026
Ownership: Direct
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 1 footnote

Footnote F1

Represents shares of the Issuer's common stock sold by the reporting person in accordance with a Rule 10b5-1 trading arrangement adopted by the reporting person on August 20, 2025.

SEC remarks

The filing of this Statement shall not be construed as an admission (a) that the person filing this Statement is, for the purposes of Section 16 of the Securities Exchange Act of 1934, as amended, the beneficial owner of any equity securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person.