John McKnight - Dec 1, 2025 Form 4 Insider Report for Dorman Products, Inc. (DORM)

Role
President, Heavy Duty
Signature
/s/ Frank J. Mahr, by Power of Attorney
Stock symbol
DORM
Transactions as of
Dec 1, 2025
Transactions value $
-$218,202
Form type
4
Date filed
12/3/2025, 04:05 PM
Previous filing
Mar 5, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
McKnight John President, Heavy Duty C/O DORMAN PRODUCTS, INC., 3400 EAST WALNUT STREET, COLMAR /s/ Frank J. Mahr, by Power of Attorney 2025-12-03 0001932069

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction DORM Common Stock Options Exercise $100K +1.36K +11.92% $73.72 12.7K Dec 1, 2025 Direct
transaction DORM Common Stock Options Exercise $198K +1.95K +15.31% $101.45 14.7K Dec 1, 2025 Direct
transaction DORM Common Stock Options Exercise $60K +623 +4.24% $96.36 15.3K Dec 1, 2025 Direct
transaction DORM Common Stock Options Exercise $64.2K +703 +4.59% $91.28 16K Dec 1, 2025 Direct
transaction DORM Common Stock Sale -$521K -3.99K -24.9% $130.60 12K Dec 1, 2025 Direct F1
transaction DORM Common Stock Sale -$120K -911 -7.58% $131.19 11.1K Dec 1, 2025 Direct F2

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction DORM Employee Stock Option (right to buy) Options Exercise $0 -1.36K -49.34% $0.00 1.39K Dec 1, 2025 Common Stock 1.36K $73.72 Direct F3
transaction DORM Employee Stock Option (right to buy) Options Exercise $0 -1.95K -100% $0.00 0 Dec 1, 2025 Common Stock 1.95K $101.45 Direct F4
transaction DORM Employee Stock Option (right to buy) Options Exercise $0 -623 -50% $0.00 623 Dec 1, 2025 Common Stock 623 $96.36 Direct F5
transaction DORM Employee Stock Option (right to buy) Options Exercise $0 -703 -33.33% $0.00 1.41K Dec 1, 2025 Common Stock 703 $91.28 Direct F6
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.18 to $131.135. The reporting person undertakes to provide to Dorman Products, Inc., any security holder of Dorman Products, Inc. or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F2 The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $131.175 to $131.35. The reporting person undertakes to provide to Dorman Products, Inc., any security holder of Dorman Products, Inc. or the Staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3 The option vests in four equal annual installments beginning on November 1, 2020, which was the first anniversary of the date of grant.
F4 The option vests in four equal annual installments beginning on March 2, 2022, which was the first anniversary of the date of grant.
F5 The option vests in four equal annual installments beginning on March 2, 2023, which is the first anniversary of the date of grant.
F6 The option vests in four equal annual installments beginning on March 2, 2024, which is the first anniversary of the date of grant.

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 securities covered by this Statement, or (b) that this Statement is legally required to be filed by such person.