X0508 4 2023-12-08 0001745916 PennyMac Financial Services, Inc. PFSI 0001196045 MAZZELLA JOSEPH F C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 0 Common Stock 2023-12-08 4 A 0 770 80.15 A 139478 D Common Stock 177031 I Mazzella Family Irrevocable Trust The Reporting Person received these shares in lieu of cash compensation payable for services rendered as a non-management director of Issuer during the Second and Third quarters of 2023. The transaction is exempt under Rule 16b-3 of the Securities Exchange Act of 1934. The reported amount consists of 2,387 restricted stock units and 137,091 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. Mazzella 2023-12-12