SHEAHAN DENIS K

PrivateCIK: 1207221

Location

BURLINGTON, MA

SHEAHAN DENIS K (Chief Executive Officer) exercised options at EASTERN BANKSHARES, INC.

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

M · 1 exercise

SHEAHAN DENIS K

Filed: 9/4/2026ACC: 0001193125-26-383670

InsiderSHEAHAN DENIS KCIK 1207221

→

IssuerEASTERN BANKSHARES, INC.CIK 1810546

DirectorOfficer· Chief Executive Officer

Since Mar 2026

-4.16K

Net shares

Net seller

$91.9K

Total sold

0

Open market trades

0B · 0S

3

Total transactions

8.61K acquired · 12.77K disposed

Non-Derivative Transactions2

Common Stock

Direct

M · Option Exercise

Shares

+8.61K

Price / share

—

Trade value

—

% of position

New position

9/3/2026

0.00→8.61K

Common Stock

Direct

F · Tax Withholding

Shares

−4.16K

Price / share

$22.08

Trade value

$91.90K

% of position

48.4%

9/3/2026

8.61K→4.45K

Total

Net shares

+4.45K

Net value

-$91.90K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	9/3/2026	M · Option Exercise	+8.61K	—	—	New position	0.00	8.61K
Common Stock Direct	9/3/2026	F · Tax Withholding	−4.16K	$22.08	$91.90K	48.4%	8.61K	4.45K
Total			+4.45K		-$91.90K

Derivative Transactions1

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common stock

8.61K shares

Shares

−8.61K

Strike price

Held after

8.61K

Exercisable

—

9/3/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common stock8.61K shares	9/3/2026	M · Option Exercise	−8.61K		—	8.61K

Non-Derivative Holdings (Post-Transaction)3

Common Stock

Indirect

Shares owned33.30K

Common Stock

Indirect

Shares owned269.66K

Common Stock

Indirect

Shares owned902.00

Total

303.87K indirect303.87K

Security Title	Shares Owned	Ownership Type
Common Stock	33.30K	Indirect
Common Stock	269.66K	Indirect
Common Stock	902.00	Indirect
Total	303.87K	303.87K indirect

Derivative Holdings (Post-Transaction)7

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

24.34K

Shares owned

24.34K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

33.72K

Shares owned

33.72K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

17.91K

Shares owned

17.91K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

42.22K

Shares owned

42.22K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

34.54K

Shares owned

34.54K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

120.02K

Shares owned

120.02K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common stock

Underlying shares

3.75K

Shares owned

3.75K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

276.51K

Owned

276.51K

Security	Underlying	Exercise Price	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common stock		—	—	24.34K	24.34K
Restricted Stock Units Direct	Common stock		—	—	33.72K	33.72K
Restricted Stock Units Direct	Common stock		—	—	17.91K	17.91K
Restricted Stock Units Direct	Common stock		—	—	42.22K	42.22K
Restricted Stock Units Direct	Common stock		—	—	34.54K	34.54K
Restricted Stock Units Direct	Common stock		—	—	120.02K	120.02K
Restricted Stock Units Direct	Common stock		—	—	3.75K	3.75K
Total					276.51K	276.51K