Were Donna M. Long’s Dorman Products (DORM) share dispositions open-market sales?

No, the dispositions reflect shares withheld by Dorman Products to cover Donna M. Long’s tax withholding obligations upon restricted stock unit vesting. This tax withholding is treated as a disposition for reporting purposes, rather than a discretionary open-market sale by the executive.

Dorman (DORM) SVP gets 2,587 RSUs; shares withheld for taxes

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Dorman Products, Inc. senior vice president and CIO Donna M. Long reported equity compensation and related tax withholding in common stock. She received a grant of 2,587 restricted stock units at $115.93 per share value, which will vest in three equal annual installments beginning on March 2, 2027. A total of 156 shares of common stock were withheld by the company upon vesting of restricted stock units to cover her tax obligations, treated as dispositions under securities rules. After these transactions, she directly owned about 21,771.8738 shares of Dorman common stock.

Insider Trade Summary

Net Buyer: 2,431 shares

Net Buy 3 txns

Insider Long Donna M.

Role SVP, CIO

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Common Stock	66	$115.93	$8K
Exercise Price or Tax Liability	Common Stock	90	$115.93	$10K
Grant/Award	Common Stock	2,587	$115.93	$300K

Holdings After Transaction: Common Stock — 21,771.8738 shares (Direct)

Footnotes (2)

F1. These shares were withheld by the Issuer upon the vesting of restricted stock units to satisfy the Reporting Person's tax withholding obligations. Such withholding is treated as a disposition of securities under Section 16 of the Securities Exchange Act of 1934, as amended.
F2. Grant of restricted stock units representing a contingent right to receive shares of Dorman common stock. The restricted stock units will vest in three equal annual installments beginning on March 2, 2027, which is the first anniversary of the date of grant.

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Form 4 Insider Transactions: What Each Field Means →

Accepted by SEC EDGAR 03/04/2026 - 04:54 PM

FAQ

What insider transactions did Dorman Products (DORM) executive Donna M. Long report?

Donna M. Long reported a grant of 2,587 restricted stock units and related tax withholding in Dorman Products common stock. Two small share dispositions occurred solely to satisfy tax obligations tied to vesting, rather than open-market selling, and were treated as dispositions under securities rules.

How many Dorman Products (DORM) shares were granted to Donna M. Long in the latest Form 4?

She was granted 2,587 restricted stock units representing a contingent right to receive Dorman common shares. These units were valued at $115.93 per share and will convert into shares over time as they vest in three equal annual installments beginning March 2, 2027.

When do Donna M. Long’s new Dorman Products (DORM) restricted stock units vest?

The 2,587 restricted stock units vest in three equal annual installments starting March 2, 2027. Each year on that anniversary date, one-third of the original grant is scheduled to vest, subject to the terms of the award and her continued service with the company.

How many Dorman Products (DORM) shares does Donna M. Long own after these transactions?

After the reported grant and tax-withholding dispositions, Donna M. Long directly owns approximately 21,771.8738 shares of Dorman Products common stock. This figure reflects her direct ownership position immediately following the March 2, 2026 transactions reported in the Form 4 filing.

What transaction codes appear in Donna M. Long’s latest Dorman Products (DORM) Form 4?

The filing shows code A for a grant or award acquisition of restricted stock units and code F for dispositions related to payment of tax liability by delivering securities. These codes identify the nature of each transaction under Section 16 reporting rules.

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).

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^*

Long Donna M.

(Last)

(First)

(Middle)

C/O DORMAN PRODUCTS, INC.

3400 EAST WALNUT STREET

(Street)

COLMAR

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)
03/02/2026

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	03/02/2026		F		66⁽¹⁾	D	$115.93	19,274.8738	D
Common Stock	03/02/2026		F		90⁽¹⁾	D	$115.93	19,184.8738	D
Common Stock	03/02/2026		A		2,587⁽²⁾	A	$115.93	21,771.8738	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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. These shares were withheld by the Issuer upon the vesting of restricted stock units to satisfy the Reporting Person's tax withholding obligations. Such withholding is treated as a disposition of securities under Section 16 of the Securities Exchange Act of 1934, as amended.

2. Grant of restricted stock units representing a contingent right to receive shares of Dorman common stock. The restricted stock units will vest in three equal annual installments beginning on March 2, 2027, 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.

	/s/ Frank J. Mahr, by Power of Attorney	03/04/2026
	** 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.

Source: View Original Filing on SEC EDGAR