X0508 4 2023-08-07 0001745916 PennyMac Financial Services, Inc. PFSI 0001275713 SPECTOR DAVID C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 1 Chairman & CEO 1 Common Stock 650183 D Common Stock 2023-08-07 4 S 0 15000 76.275 D 360604 I ST Family Investment Company LLC The reported amount consists of 50,153 restricted stock units and 600,030 shares of Common Stock. The restricted stock units are to be settled in an equal number of shares of Common Stock upon vesting. The price reported is the weighted average price of multiple transactions ranging from $75.62 to $75.94. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of Common Stock and the prices at which the transactions were effected. The price reported is the weighted average price of multiple transactions ranging from $76.01 to $76.75. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of Common Stock and the prices at which the transactions were effected. /s/ Derek W. Stark, attorney-in-fact for Mr. Spector 2023-08-08