Dorman Products officer sells 2,000 shares of common stock

A Dorman Products, Inc. officer reported selling 2,000 shares of common stock on December 12, 2025 at a weighted average price of $128.798 per share.

Rhea-AI Filing Summary

A Dorman Products, Inc. officer reported selling 2,000 shares of common stock on December 12, 2025 at a weighted average price of $128.798 per share. The reporting person serves as President, Heavy Duty at the company.

After this transaction, the officer directly owns 9,112.1061 shares of Dorman Products common stock. The sale price reflects multiple trades executed in a range from $128.53 to $129.26 per share.

Insider Trade Summary

Net Seller: 2,000 shares

Net Sell 1 txn

Insider McKnight John

Role President, Heavy Duty

Sold 2,000 shs ($258K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2,000	$128.798	$258K

Holdings After Transaction: Common Stock — 9,112.1061 shares (Direct)

Footnotes (1)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.53 to $129.26. 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Dorman Products (DORM) report?

A company officer reported selling 2,000 shares of Dorman Products, Inc. common stock in an open market transaction on December 12, 2025.

How many Dorman Products (DORM) shares were sold and at what price?

The officer sold 2,000 shares at a weighted average price of $128.798 per share, with individual trades ranging from $128.53 to $129.26.

What is the reporting person’s role at Dorman Products (DORM)?

The reporting person is an officer of Dorman Products, Inc., serving as President, Heavy Duty.

How many Dorman Products (DORM) shares does the officer own after the sale?

Following the reported sale, the officer directly owns 9,112.1061 shares of Dorman Products, Inc. common stock.

Was the Dorman Products insider sale executed in multiple trades?

Yes. The 2,000 shares were sold in multiple transactions, at prices between $128.53 and $129.26 per share, resulting in a weighted average of $128.798.

Is the reported ownership of Dorman Products (DORM) shares direct or indirect?

The 9,112.1061 shares reported after the transaction are held in direct ownership by the officer.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 12/15/2025 - 05:46 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

X

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

McKnight John

(Last) (First) (Middle)

C/O DORMAN PRODUCTS, INC.

3400 EAST WALNUT STREET

(Street)

COLMAR PA 18915

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Dorman Products, Inc. [ DORM ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, Heavy Duty

3. Date of Earliest Transaction (Month/Day/Year)
12/12/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	12/12/2025		S		2,000	D	$128.798(1)	9,112.1061	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $128.53 to $129.26. 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.

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.

	/s/ Frank J. Mahr, by Power of Attorney	12/15/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.