X0306 4 2021-02-17 0001464423 PennyMac Mortgage Investment Trust PMT 0001717888 Sullivan Marianne C/O PENNYMAC MORTAGE INVESTMENT TRUST 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 Common Shares of Beneficial Interest 2021-02-17 4 A 0 5357 0 A 17274 D Common Shares of Beneficial Interest 42651 I Individual Retirement Account Common Shares of Beneficial Interest 47077 I Marianne E Sullivan Revocable Trust Common Shares of Beneficial Interest 1700 I OptimX Advisors 401K Common Shares of Beneficial Interest 5600 I Roth Contributory IRA The Reporting Person was granted 5,357 restricted share units. The restricted share units, which vest in three equal installments beginning on the first anniversary of the grant date, are to be settled in an equal number of common shares of beneficial interest upon vesting. The reported amount consists of 12,755 restricted share units and 4,519 common shares of beneficial interest. The restricted share units are to be settled in an equal number of common shares of beneficial interest upon vesting. /s/ Derek W. Stark, attorney-in-fact for Ms. Sullivan 2021-02-19