X0306 4 2022-01-02 0001745916 PennyMac Financial Services, Inc. PFSI 0001198631 STARK DEREK C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 Chief Legal Officer Common Stock 2022-01-02 4 F 0 479 69.78 D 55435 D Nonstatutory Stock Option (Right to Buy) 58.85 2022-02-25 2031-02-24 Common Stock 6652 6652 D Nonstatutory Stock Option (Right to Buy) 35.03 2021-02-26 2030-02-25 Common Stock 11882 11882 D Nonstatutory Stock Option (Right to Buy) 24.40 2019-03-09 2028-03-08 Common Stock 7684 7684 D Nonstatutory Stock Option (Right to Buy) 18.05 2018-03-06 2027-03-05 Common Stock 6925 6925 D Nonstatutory Stock Option (Right to Buy) 22.92 2020-03-15 2029-03-14 Common Stock 8086 8086 D Nonstatutory Stock Option (Right to Buy) 59.68 2020-12-14 2030-12-13 Common Stock 13506 13506 D Represents shares withheld for taxes upon vesting of restricted stock units. The reported amount consists of 4,748 restricted stock units and 50,687 shares of Common Stock. The restricted stock units are to be settled in an equal number of shares of Common Stock upon vesting. This nonstatutory stock option to purchase 6,652 shares of Common Stock of the Issuer will vest as to one-third of the optioned shares on each of February 25, 2022, 2023 and 2024, subject to the Reporting Person's continued service through each date. This nonstatutory stock option to purchase 11,882 shares of Common Stock of the Issuer will vest as to one-third of the optioned shares on each of February 26, 2021, 2022 and 2023, subject to the Reporting Person's continued service through each date. This nonstatutory stock option to purchase 7,684 shares of Common Stock of the Issuer will vest as to one-third of the optioned shares on each of March 9, 2019, 2020 and 2021, subject to the Reporting Person's committed service through each date. This nonstatutory stock option to purchase 6,925 shares of Common Stock of the Issuer will vest as to one-third of the optioned shares on each of March 6, 2018, 2019 and 2020, subject to the Reporting Person's committed service through each date. This nonstatutory stock option to purchase 8,086 shares of Common Stock of the Issuer will vest as to one-third of the optioned shares on each of March 15, 2020, 2021 and 2022, subject to the Reporting Person's continued service through each date. This nonstatutory stock option to purchase 13,506 shares of Common Stock of the Issuer is fully vested but subject to certain transfer restrictions that will lapse in one-third increments on each of December 14, 2021, 2022 and 2023 ,subject to the Reporting Person's continued service through each lapse date. /s/ Derek Stark 2022-01-04