X0306 4 2022-05-17 0 0001810546 Eastern Bankshares, Inc. EBC 0001825655 Spiess Paul Davis 265 FRANKLIN STREET BOSTON MA 02110 1 0 0 0 Common Stock 2022-05-17 4 A 0 2869 0.00 A 114965 D Common Stock 50000 I By Spouse These shares represent restricted stock that was granted under the Issuer's 2021 Equity Incentive Plan. This restricted stock is scheduled to vest in full on May 14, 2023. Consists of (i) 50,000 shares of common stock; (ii) 62,096 shares of restricted stock that vest ratably over a five-year period on the anniversary of the November 30, 2021 date of grant; and (iii) the shares of restricted stock reported on this Form 4. The signatory is signing on behalf of Paul D. Spiess pursuant to a Power of Attorney dated September 8, 2020, which was previously filed with the Commission. /s/ Astrid E.P. Tsang, by Power of Attorney 2022-05-19