X0306 4 2020-07-15 0001745916 PennyMac Financial Services, Inc. PFSI 0001469142 Botein Matthew C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 Common Stock 2020-07-15 4 S 0 18600 42.1117 D 393202 D Common Stock 2020-07-15 4 S 0 1400 42.5929 D 391802 D Common Stock 2020-07-15 4 S 0 16188 42.0622 D 375614 D Common Stock 2020-07-15 4 S 0 3812 42.5317 D 371802 D Common Stock 2020-07-15 4 S 0 20000 42.2284 D 351802 D Common Stock 2020-07-16 4 S 0 3711 43.0273 D 348091 D Common Stock 2020-07-17 4 S 0 16289 43.5196 D 331802 D Common Stock 2020-07-17 4 S 0 100 44.01 D 331702 D These shares of Common Stock were sold pursuant to a 10b5-1 plan. The price reported is the weighted average price of multiple transactions ranging from $41.53 to $42.51. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $42.53 to $42.76. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $41.475 to $42.47. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $42.48 to $42.75. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $42.00 to $42.75. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $43.00 to $43.06. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares 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 $43.00 to $43.89. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of shares of Common Stock and the prices at which the transactions were effected. The reported amount consists of 4,236 restricted stock units and 327,466 shares of Common Stock. The restricted stock units are to be settled in an equal number of Common Stock upon vesting. /s/ Derek W. Stark, attorney-in-fact for Mr. Botein 2020-07-17