DORM insider sells 820 shares; holdings down 4% – Form 4 review

Rhea-AI Filing Summary

Form 4 – Dorman Products, Inc. (DORM)

SVP & CIO Donna M. Long reported two open-market sales on 28 Jul 2025:

• 2 common shares at a weighted average price of $121.60
• 818 common shares at a weighted average price of $122.2108

Aggregate shares sold: 820, for gross proceeds of roughly $100,000. Post-sale direct ownership declines to 19,073.8738 shares, a reduction of about 4 % of her prior position. No derivative securities were exercised or acquired, and no 10b5-1 trading plan is referenced.

The filing is routine and does not indicate any corporate events or financial performance issues. Given the modest size relative to both Long’s remaining stake and Dorman’s ~30 million-share float, the transaction is unlikely to exert meaningful pressure on the stock, but investors may track insider activity as a sentiment gauge.

Insights

Equity Analyst

TL;DR: Small insider sale; negligible impact.

The 820-share sale (~$100k) represents only 4 % of Ms. Long’s holdings and an immaterial fraction of DORM’s float. No options exercised, no sign of strategic shift. Such routine diversification sales typically carry neutral informational value unless part of a larger pattern. I view the impact on valuation or near-term trading as minimal.

Corporate Governance Specialist

TL;DR: Governance clean; filing timely and standard.

The Form 4 is timely (filed next day), includes weighted-average footnotes, and shows no ambiguous indirect holdings. Absence of derivative activity or accelerated selling suggests compliance rather than opportunism. I classify the disclosure as not impactful for governance risk.

Insider Trade Summary

Net Seller: 820 shares

Net Sell 2 txns

Insider Long Donna M.

Role SVP, CIO

Sold 820 shs ($100K)

Type	Security	Shares	Price	Value
Sale	Common Stock	2	$121.60	$243.20
Sale	Common Stock	818	$122.2108	$100K

Holdings After Transaction: Common Stock — 19,073.8738 shares (Direct)

Footnotes (2)

1. F1. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.58 through $121.62. 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.
2. F2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.72 through $122.70. 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.

How many Dorman (DORM) shares did the insider sell?

Donna M. Long sold 820 common shares on 28 Jul 2025.

What was the average sale price disclosed in the Form 4?

The weighted average prices were $121.60 and $122.2108 for the two trade lots.

How many DORM shares does the insider still own after the sale?

Long retains 19,073.8738 directly held shares.

Did the Form 4 report any option exercises or derivative transactions?

No. Table II is empty, indicating no derivative activity.

Is the insider sale significant relative to Dorman’s share count?

The 820 shares equal a tiny fraction of Dorman’s ~30 million share float, implying limited market impact.

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

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Accepted by SEC EDGAR 07/29/2025 - 09:09 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

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

1. Name and Address of Reporting Person^*

Long Donna M.

(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)
	SVP, CIO

3. Date of Earliest Transaction (Month/Day/Year)
07/28/2025

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	07/28/2025		S		2(1)	D	$121.6	19,891.8738	D
Common Stock	07/28/2025		S		818(2)	D	$122.2108	19,073.8738	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 $121.58 through $121.62. 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.

2. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.72 through $122.70. 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 equity 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	07/29/2025
	** 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.