Rachel Lynn Smydo - 23 Sep 2025 Form 4 Insider Report for S&T BANCORP INC (STBA)

Role: Executive Vice President
Signature: /s/ Jackie Kennane, attorney-in-fact for Rachel Lynn Smydo
Issuer symbol: STBA
Transactions as of: 23 Sep 2025
Net transactions value: +$70,454
Form type: 4
Filing time: 25 Sep 2025, 16:04:27 UTC
Previous filing: 04 Apr 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Smydo Rachel Lynn	Executive Vice President	800 PHILADELPHIA STREET, INDIANA	/s/ Jackie Kennane, attorney-in-fact for Rachel Lynn Smydo	25 Sep 2025	0001947722

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STBA	Common Stock	Options Exercise	$98,876	+2,550	+39%	$38.78	9,131	23 Sep 2025	Direct	F1
transaction	STBA	Common Stock	Tax liability	$28,422	-733	-8%	$38.78	8,398	23 Sep 2025	Direct	F2

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	STBA	Restricted Stock Units	Options Exercise	$0	-2,550	-100%	$0.000000	0	23 Sep 2025	Common Stock	2,550		Direct	F1, F4, F8
holding	STBA	Restricted Stock Units						1,420	23 Sep 2025	Common Stock	1,420		Direct	F3, F4, F5
holding	STBA	Restricted Stock Units						1,819	23 Sep 2025	Common Stock	1,819		Direct	F4, F6
holding	STBA	Restricted Stock Units						664	23 Sep 2025	Common Stock	664		Direct	F4, F7

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

Explanation of Responses:

Id	Content
F1	Upon vest, automatically converts into equal number of shares of common stock.
F2	Shares of common stock withheld for payment of tax liability for vested and converted RSU's.
F3	Correction to the name of the award. It is not a Director's award, but officer award. All other aspects of the award, including date of award, number of shares, and vesting remain unchanged.
F4	Each restricted stock unit represents a contingent right to receive one share of S&T Bancorp, Inc. common stock.
F5	The restricted stock units vest in three equal annual installments beginning April 1, 2025. Vested shares will be delivered to the reporting person upon vesting.
F6	The restricted stock units vest in three equal annual installments beginning April 1, 2026. Vested shares will be delivered to the reporting person upon vesting.
F7	The restricted stock units vest in three equal annual installments beginning April 1, 2024. Vested shares will be delivered to the reporting person upon vesting.
F8	The Registrant awarded a special grant to the executive officer that will vest equally over the three successive anniversary dates of the grant date.