ANTONAKES STEVEN LOUIS (Executive VP) exercised options at EASTERN BANKSHARES, INC.

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

M · 1 exercise

ANTONAKES STEVEN LOUIS

Filed: 3/5/2026ACC: 0001193125-26-094134

InsiderANTONAKES STEVEN LOUISCIK 1825588

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IssuerEASTERN BANKSHARES, INC.CIK 1810546

Officer· Executive VP

Since Oct 2020

-486.00

Net shares

Net seller

$9.5K

Total sold

Open market trades

0B · 0S

Total transactions

1.65K acquired · 2.14K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

+1.65K

Price / share

—

Trade value

—

% of position

2.2%

3/3/2026

74.12K→75.78K

Common Stock

Direct

F · Tax Withholding

−486.00

Price / share

$19.45

Trade value

$9.45K

% of position

0.6%

3/3/2026

75.78K→75.29K

Total

Net shares

+1.17K

Net value

-$9.45K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	3/3/2026	M · Option Exercise	+1.65K	—	—	2.2%	74.12K	75.78K
Common Stock Direct	3/3/2026	F · Tax Withholding	−486.00	$19.45	$9.45K	0.6%	75.78K	75.29K
Total			+1.17K		-$9.45K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common stock

1.65K shares

−1.65K

Strike price

Held after

31.51K

Exercisable

—

3/3/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common stock1.65K shares	3/3/2026	M · Option Exercise	−1.65K		—	31.51K

Non-Derivative Holdings (Post-Transaction)2

Common Stock

Indirect

Shares owned13.11K

Common Stock

Indirect

Shares owned4.92K

Total

18.03K indirect18.03K

Security Title	Shares Owned	Ownership Type
Common Stock	13.11K	Indirect
Common Stock	4.92K	Indirect
Total	18.03K	18.03K indirect

Derivative Holdings (Post-Transaction)3

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

1.81K

Shares owned

1.81K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

9.49K

Shares owned

9.49K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

4.63K

Shares owned

4.63K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

15.93K

Owned

15.93K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common stock	—	—	1.81K	1.81K
Restricted Stock Units Direct	Common stock	—	—	9.49K	9.49K
Restricted Stock Units Direct	Common stock	—	—	4.63K	4.63K
Total				15.93K	15.93K