X0609 4 2026-05-15 0001745916 PennyMac Financial Services, Inc. PFSI 0001591994 Perotti Daniel Stanley false C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 Chief Financial Officer 1 Common Stock 2026-05-15 4 S 0 2925 87.50 D 210625 I The Perotti Family Trust Common Stock 15701 D The sale reported on this Form 4 occurred automatically pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on June 2, 2025. The reported amount consists of 10,409 restricted stock units and 5,292 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 W. Stark, attorney-in-fact for Mr. Perotti 2026-05-18