McKnight John 4

4 · Dorman Products, Inc. · Filed Dec 3, 2025

Form 4

Period: 2025-12-01

President, Heavy Duty

Transactions

Exercise/Conversion
Common Stock
2025-12-01$73.72/sh+1,356$99,964→ 12,734.106 total
Exercise/Conversion
Common Stock
2025-12-01$101.45/sh+1,950$197,828→ 14,684.106 total
Exercise/Conversion
Common Stock
2025-12-01$96.36/sh+623$60,032→ 15,307.106 total
Exercise/Conversion
Common Stock
2025-12-01$91.28/sh+703$64,170→ 16,010.106 total
Sale
Common Stock
2025-12-01$130.59/sh−3,987$520,682→ 12,023.106 total
Sale
Common Stock
2025-12-01$131.19/sh−911$119,514→ 11,112.106 total
Exercise/Conversion
Employee Stock Option (right to buy)
2025-12-01−1,356→ 1,392 total
Exercise: $73.72Exp: 2027-11-01→ Common Stock (1,356 underlying)
Exercise/Conversion
Employee Stock Option (right to buy)
2025-12-01−1,950→ 0 total
Exercise: $101.45Exp: 2029-03-02→ Common Stock (1,950 underlying)
Exercise/Conversion
Employee Stock Option (right to buy)
2025-12-01−623→ 623 total
Exercise: $96.36Exp: 2030-03-02→ Common Stock (623 underlying)
Exercise/Conversion
Employee Stock Option (right to buy)
2025-12-01−703→ 1,406 total
Exercise: $91.28Exp: 2031-03-02→ Common Stock (703 underlying)

Footnotes (6)

[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.

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