X0508 4 2024-03-12 0001464423 PennyMac Mortgage Investment Trust PMT 0001275713 SPECTOR DAVID C/O PENNYMAC MORTGAGE INVESTMENT TRUST 3043 TOWNSGATE ROAD WESTLAKE VILLAGE CA 91361 1 1 Chairman and CEO 0 Common Shares of Beneficial Interest 2024-03-12 4 A 0 31337 0 A 332714 D Common Shares of Beneficial Interest 2024-03-12 4 M 0 15298 0 A 258322 D Common Shares of Beneficial Interest 2024-03-12 4 M 0 21950 0 A 280272 D Common Shares of Beneficial Interest 2024-03-12 4 M 0 21105 0 A 301377 D Common Shares of Beneficial Interest 2024-03-12 4 F 0 7754 14.28 D 324960 D Common Shares of Beneficial Interest 2024-03-12 4 F 0 11125 14.28 D 313835 D Common Shares of Beneficial Interest 2024-03-12 4 F 0 10697 14.28 D 303138 D Performance-Based Restricted Share Units 2024-03-12 4 A 0 15298 0 A Common Shares of Beneficial Interest 15298 15298 D Performance-Based Restricted Share Units 2024-03-12 4 M 0 15298 0 D Common Shares of Beneficial Interest 15298 0 D Performance-Based Restricted Share Units 2024-03-12 4 A 0 21950 0 A Common Shares of Beneficial Interest 21950 21950 D Performance-Based Restricted Share Units 2024-03-12 4 M 0 21950 0 D Common Shares of Beneficial Interest 21950 0 D Performance-Based Restricted Share Units 2024-03-12 4 A 0 21105 0 A Common Shares of Beneficial Interest 21105 21105 D Performance-Based Restricted Share Units 2024-03-12 4 M 0 21105 0 D Common Shares of Beneficial Interest 21105 0 D The Reporting Person was granted restricted stock units, which will vest in three equal installments beginning on the first anniversary of the date of grant, are to be settled in an equal number of shares of Common Stock upon vesting. This performance-based restricted share unit (PSU) award was granted on February 17, 2021 and may vest in three equal installments subject to the satisfaction of certain performance based criteria for each of the fiscal years ending 2021, 2022 and 2023. The PSU vested as to one-third on March 12, 2024 and the payout of common shares of beneficial interest pursuant to the PSU award for the 2023 fiscal year was determined based on a return on equity and relative total stockholder return for the period of January 1, 2023 through December 31, 2023 resulting in a payout of 158.9%. This performance-based restricted share unit (PSU) award was granted on February 25, 2022 and may vest in three equal installments subject to the satisfaction of certain performance based criteria for each of the fiscal years ending 2022, 2023 and 2024. The PSU vested as to one-third on March 12, 2024 and the payout of common shares of beneficial interest pursuant to the PSU award for the 2023 fiscal year was determined based on return on equity and relative total stockholder return for the period of January 1, 2023 through December 31, 2023 resulting in a payout of 187.5%. This performance-based restricted share unit (PSU) award was granted on February 28, 2023 and may vest in three equal installment subject to the satisfaction of certain performance based criteria for each of the fiscal years ending 2023, 2024 and 2025. The PSU vested as to one-third on March 12, 2024 and the payout of common shares of beneficial interest pursuant to the PSU award for the 2023 fiscal year was determined based on return on equity and relative total stockholder return for the period of January 1, 2023 through December 31, 2023 resulting in a payout of 150%. Represents shares withheld for taxes upon vesting of performance-based restricted share units. The reported amount consists of 63,940 restricted share units and 239,198 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 Mr. Spector 2024-03-14