Westermann Donald Michael 4

4 · Eastern Bankshares, Inc. · Filed Mar 5, 2026

Form 4

Period: 2026-03-03

Chief Information Officer

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-03-03+2,165→ 33,933 total
Tax Payment
Common Stock
2026-03-03$19.45/sh−961$18,691→ 32,972 total
Exercise/Conversion
Restricted Stock Units
[F1][F5]
2026-03-03−2,165→ 32,532 total
→ Common stock (2,165 underlying)

Holdings

Footnotes (6)

[F1]Restricted stock units convert into common stock on a one-for-one basis.
[F2]Reflects the amount of shares beneficially owned, including shares received due to automatic dividend reinvestment, as of the date of this report.
[F3]On March 1, 2022, the reporting person was granted 47,438 restricted stock units that vest in five equal annual installments beginning March 1, 2023, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.
[F4]On March 1, 2024, the reporting person was granted 8,683 restricted stock units that vest in three equal annual installments beginning March 1, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.
[F5]On March 3, 2025, the reporting person was granted 34,697 restricted stock units of which 6,497 vest in three equal annual installments beginning March 3, 2026, after market close, and 28,200 vest after 3 years, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.
[F6]On March 2, 2026, the reporting person was granted 7,099 restricted stock units that vest in three equal annual installments beginning March 2, 2027, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.

Signature

/s/ Kathleen R. Henry, by Power of Attorney|2026-03-05

Documents

1 file