Was Derek Stark’s PennyMac (PFSI) share sale under a Rule 10b5-1 plan?

Yes. The 1,066-share sale on March 3 occurred automatically under a Rule 10b5-1 trading plan adopted on October 23, 2025. Such plans pre-schedule trades, aiming to separate trading decisions from day-to-day, non-public information.

PennyMac (NYSE: PFSI) CLO sells 1,066 shares, with RSUs taxed

Filing Impact

(Moderate)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

PennyMac Financial Services Chief Legal Officer Derek Stark reported two stock transactions. On March 3, he completed an open-market sale of 1,066 shares of common stock at $87.66 per share, executed automatically under a Rule 10b5-1 trading plan adopted on October 23, 2025.

On February 28, 467 shares were disposed of at $91.93 per share to cover taxes upon vesting of restricted stock units. After these transactions, Stark’s reported holdings consist of 15,000 shares of common stock and 5,944 restricted stock units, which will settle in the same number of shares upon vesting.

Insider Trade Summary

Net Seller: 1,066 shares ($93,446)

Net Sell 2 txns

Insider STARK DEREK

Role Chief Legal Officer

Sold 1,066 shs ($93K)

Type	Security	Shares	Price	Value
Sale	Common Stock	1,066	$87.66	$93K
Tax Withholding	Common Stock	467	$91.93	$43K

Holdings After Transaction: Common Stock — 20,944 shares (Direct)

Footnotes (1)

Represents shares withheld for taxes upon vesting of restricted stock units. The sale reported on this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 23, 2025. The reported amount consists of 5,944 restricted stock units and 15,000 shares of Common Stock. The restricted stock units are to be settled in an equal number of shares of Common Stock upon vesting.

Form 4 Insider Transactions: What Each Field Means →

03/03/2026 - 07:52 PM

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^*

STARK DEREK

(Last)

(First)

(Middle)

C/O PENNYMAC FINANCIAL SERVICES, INC.

3043 TOWNSGATE ROAD

(Street)

WESTLAKE VILLAGE

91361

(City)

(State)

(Zip)

2. Issuer Name and Ticker or Trading Symbol
PennyMac Financial Services, Inc. [ PFSI ]

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

	Director	10% Owner
X	Officer (give title below)	Other (specify below)
	Chief Legal Officer

3. Date of Earliest Transaction (Month/Day/Year)
02/28/2026

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	02/28/2026		F		467⁽¹⁾	D	$91.93	22,010	D
Common Stock	03/03/2026		S		1,066⁽²⁾	D	$87.66	20,944⁽³⁾	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. Represents shares withheld for taxes upon vesting of restricted stock units.

2. The sale reported on this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on October 23, 2025.

3. The reported amount consists of 5,944 restricted stock units and 15,000 shares of Common Stock. The restricted stock units are to be settled in an equal number of shares of Common Stock upon vesting.

	/s/ Derek Stark	03/03/2026
	** 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

FAQ

What insider transactions did Derek Stark report for PennyMac (PFSI)?

Derek Stark reported an open-market sale of 1,066 PennyMac common shares at $87.66 and a tax-withholding disposition of 467 shares at $91.93. The tax-related shares were withheld upon vesting of restricted stock units.

How many PennyMac (PFSI) shares and RSUs does Derek Stark hold after these transactions?

After the reported transactions, Derek Stark’s holdings consist of 15,000 shares of PennyMac common stock and 5,944 restricted stock units. The restricted stock units are designed to settle into an equal number of common shares upon vesting.

Why were 467 PennyMac (PFSI) shares disposed of in Derek Stark’s Form 4?

The 467 shares were withheld to satisfy tax obligations when restricted stock units vested. This tax-withholding disposition, coded as “F,” uses shares instead of cash to pay required taxes associated with the equity award vesting.

What type of insider is Derek Stark at PennyMac (PFSI)?

Derek Stark serves as Chief Legal Officer of PennyMac Financial Services, Inc. As an executive officer, his trades in company stock must be reported on Form 4, providing transparency into his equity transactions and resulting ownership levels.