X0306 4 2017-12-21 0001568669 PENNYMAC FINANCIAL SERVICES, INC. PFSI 0001469142 Botein Matthew C/O PENNYMAC FINANCIAL SERVICES, INC. 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 Class A Common Stock 2017-12-21 4 M 0 10000 0 A 34741 D Class A Common Stock 2017-12-21 4 S 0 10000 22.045 D 24741 D Cl A Units of Private Nat'l Mortgage Acceptance Company, LLC 2017-12-21 4 M 0 10000 0 D 2013-11-05 Class A Common Stock 10000 908552 D Represents shares of Class A Common Stock received upon the exchange of Class A Units of Private National Mortgage Acceptance Company, LLC. Pursuant to the terms of an exchange agreement, Class A Units of Private National Mortgage Acceptance Company, LLC are exchangeable for shares of Class A Common Stock of the Issuer on a one-for-one basis, subject to customary conversion rate adjustments. These shares of Class A Common Stock were sold pursuant to a 10b5-1 plan. The price reported is the weighted average of multiple transactions ranging from $21.825 to $22.20. The reporting person hereby undertakes to provide upon request to the SEC, the Issuer or a security holder of the Issuer the number of Class A Common Stock and the price at which the transactions were effected. The reported amount consists of 12,028 restricted stock units and 12,713 shares of Class A Common Stock. The restricted stock units are to be settled in an equal number of shares of Class A Common Stock upon vesting. N/A /s/ Derek W. Stark, attorney-in-fact for Mr. Botein 2017-12-21