X0306 4 2022-03-01 0 0001810546 Eastern Bankshares, Inc. EBC 0001904111 Lodge Timothy Joseph 265 FRANKLIN STREET BOSTON MA 02110 0 1 0 0 CEO, Eastern Insurance Group Common Stock 2000 D Common Stock 15182 I By 401(k) Common Stock 969 I By ESOP Restricted Stock Units 2022-03-01 4 A 0 23719 0.00 A Common Stock 23719 23719 D Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report. Each restricted stock unit represents a contingent right to receive one share of EBC common stock on the applicable vesting date. The restricted stock units vest in five equal annual installments beginning March 1, 2023. Vested shares will be issued to the reporting person as soon as practicable after the vesting date. /s/ Astrid E. P. Tsang, by Power of Attorney 2022-03-03