MCCOMISH CHRISTOPHER J. (Chief Executive Officer) exercised options at S&T BANCORP INC

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

M · 1 exercise

MCCOMISH CHRISTOPHER J.

Filed: 4/3/2026ACC: 0001744487-26-000002

InsiderMCCOMISH CHRISTOPHER J.CIK 1744487

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IssuerS&T BANCORP INCCIK 719220

DirectorOfficer· Chief Executive Officer

Since Aug 2021

+9.57K

Net shares

Net buyer

$145.1K

Total acquired

Open market trades

0B · 0S

Total transactions

13K acquired · 3.43K disposed

Non-Derivative Transactions1

Common Stock

Direct

M · Option Exercise

+3.43K

Price / share

$42.28

Trade value

$145.10K

% of position

73.4%

4/1/2026

4.67K→8.11K

Total

Net shares

+3.43K

Net value

$145.10K

Security	Date	Type	Shares	Price / Share	Trade Value	% of Position	Held Before	Held After
Common Stock Direct	4/1/2026	M · Option Exercise	+3.43K	$42.28	$145.10K	73.4%	4.67K	8.11K
Total			+3.43K		$145.10K

Derivative Transactions2

Restricted Stock Units

Direct

A · Award

Converts to

Common Stock

9.57K shares

+9.57K

Strike price

Held after

9.57K

Exercisable

—

4/1/2026

Restricted Stock Units

Direct

M · Option Exercise

Converts to

Common Stock

3.43K shares

−3.43K

Strike price

Held after

6.97K

Exercisable

—

4/1/2026

Security	Converts To	Date	Type	Shares	Strike Price	Exercisable	Held After
Restricted Stock Units Direct	Common Stock9.57K shares	4/1/2026	A · Award	+9.57K		—	9.57K
Restricted Stock Units Direct	Common Stock3.43K shares	4/1/2026	M · Option Exercise	−3.43K		—	6.97K

Non-Derivative Holdings (Post-Transaction)0

No non-derivative holdings reported

Derivative Holdings (Post-Transaction)4

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

11.60K

Shares owned

11.60K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

21.34K

Shares owned

21.34K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

12.40K

Shares owned

12.40K

Exercise price

Expiration

—

Exercise window

—

Restricted Stock Units

Direct

Underlying security

Common Stock

Underlying shares

12.46K

Shares owned

12.46K

Exercise price

Expiration

—

Exercise window

—

Total

Underlying

57.80K

Owned

57.80K

Security	Underlying	Exercise Window	Expiration	Underlying Shares	Shares Owned
Restricted Stock Units Direct	Common Stock	—	—	11.60K	11.60K
Restricted Stock Units Direct	Common Stock	—	—	21.34K	21.34K
Restricted Stock Units Direct	Common Stock	—	—	12.40K	12.40K
Restricted Stock Units Direct	Common Stock	—	—	12.46K	12.46K
Total				57.80K	57.80K