RIVERS ROBERT FRANCIS (Chair and CEO) exercised options at EASTERN BANKSHARES, INC.

Option exercise — a mechanical event triggered by vesting or expiry. Not a discretionary conviction trade.

M · 1 exercise

RIVERS ROBERT FRANCIS

Filed: 3/5/2026ACC: 0001193125-26-094351

InsiderRIVERS ROBERT FRANCISCIK 1825654

→

IssuerEASTERN BANKSHARES, INC.CIK 1810546

DirectorOfficer· Chair and CEO

Since Oct 2020

-5.43K

Net shares

Net seller

$105.6K

Total sold

Open market trades

0B · 0S

Total transactions

11.22K acquired · 16.65K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+11.22K

Price / share

—

Trade value

—

% of position

2.5%

3/3/2026

452.49K→463.71K

Common Stock

Direct

F · Tax Withholding

−5.43K

Price / share

$19.45

Trade value

$105.56K

% of position

1.2%

3/3/2026

463.71K→458.28K

Total

Net shares

+5.80K

Net value

-$105.56K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/3/2026	M · Option Exercise	+11.22K	—	—	2.5%	452.49K	463.71K
Common Stock Direct	3/3/2026	F · Tax Withholding	−5.43K	$19.45	$105.56K	1.2%	463.71K	458.28K
Total			+5.80K		-$105.56K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common stock

11.22K shares

−11.22K

Strike price

Held after

22.45K

Exercisable

—

3/3/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common stock11.22K shares	3/3/2026	M · Option Exercise	−11.22K		—	22.45K

Non-Derivative Holdings (Post-Transaction)1

Common Stock

Indirect

Shares owned4.92K

Total

4.92K indirect4.92K

Security Title	Shares Owned	Ownership Type
Common Stock	4.92K	Indirect
Total	4.92K	4.92K indirect

Derivative Holdings (Post-Transaction)3

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

15.54K

Shares owned

15.54K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

33.30K

Shares owned

33.30K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

21.35K

Shares owned

21.35K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

70.18K

Owned

70.18K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common stock	—	—	15.54K	15.54K
Restricted Stock Units Direct	Common stock	—	—	33.30K	33.30K
Restricted Stock Units Direct	Common stock	—	—	21.35K	21.35K
Total				70.18K	70.18K