R. David Rosato - 03 Mar 2026 Form 4 Insider Report for Eastern Bankshares, Inc. (EBC)

Role: Chief Financial Officer
Signature: /s/ Kathleen R. Henry, by Power of Attorney
Issuer symbol: EBC
Transactions as of: 03 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 05 Mar 2026, 16:43:28 UTC
Previous filing: 03 Mar 2026
Next filing: 09 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Rosato R David	Chief Financial Officer	125 HIGH STREET, BOSTON	/s/ Kathleen R. Henry, by Power of Attorney	05 Mar 2026	0001605452

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	EBC	Common Stock	Options Exercise		+4,135	+52%	$0.000000^*	12,157	03 Mar 2026	Direct	F1
transaction	EBC	Common Stock	Tax liability		-1,425	-12%	$19.45^*	10,732	03 Mar 2026	Direct
holding	EBC	Common Stock						40,000	03 Mar 2026	By Spouse in Trust

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	EBC	Restricted Stock Units	Options Exercise		-4,135	-33%	$0.000000^*	8,273	03 Mar 2026	Common stock	4,135		Direct	F1, F3
holding	EBC	Restricted Stock Units						22,714	03 Mar 2026	Common stock	22,714		Direct	F1, F2
holding	EBC	Restricted Stock Units						11,156	03 Mar 2026	Common stock	11,156		Direct	F1, F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Restricted stock units convert into common stock on a one-for-one basis.
F2	On September 3, 2024, the reporting person was granted 34,070 restricted stock units that vest in three equal annual installments beginning September 3, 2025, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.
F3	On March 3, 2025, the reporting person was granted 12,408 restricted stock units that vest in three equal annual installments beginning March 3, 2026, after market close, subject to continued service. Vested shares will be issued to the reporting person as soon as practicable after the vesting date.
F4	On March 2, 2026, the reporting person was granted 11,156 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.