Susan A. Nicholson - 29 Jul 2025 Form 4 Insider Report for S&T BANCORP INC (STBA)

Role: Executive Vice President
Signature: /s/ Jackie Kennane, attorney-in-fact for Susan A. Nicholson
Issuer symbol: STBA
Transactions as of: 29 Jul 2025
Net transactions value: +$20,922
Form type: 4
Filing time: 31 Jul 2025, 13:03:37 UTC
Previous filing: 04 Apr 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Nicholson Susan A	Executive Vice President	800 PHILADELPHIA STREET, INDIANA	/s/ Jackie Kennane, attorney-in-fact for Susan A. Nicholson	31 Jul 2025	0001920913

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STBA	Common Stock	Options Exercise	$37,254	+990	+17%	$37.63	6,797	29 Jul 2025	Direct	F1
transaction	STBA	Common Stock	Tax liability	$16,331	-434	-6.4%	$37.63	6,363	29 Jul 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	-990	-33%	$0.000000	2,010	29 Jul 2025	Common Stock	990		Direct	F1, F3, F9
holding	STBA	Restricted Stock Units						657	29 Jul 2025	Common Stock	657		Direct	F3, F4
holding	STBA	Restricted Stock Units						1,744	29 Jul 2025	Common Stock	1,744		Direct	F3, F5, F6
holding	STBA	Restricted Stock Units						1,389	29 Jul 2025	Common Stock	1,389		Direct	F3, F7, F8

* 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	Each restricted stock unit represents a contingent right to receive one share of S&T Bancorp, Inc. common stock.
F4	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.
F5	Filing delay due by April 3, 2025, caused by software unable to attach footnotes to awards.
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	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.
F8	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.
F9	The Registrant awarded a special grant to the executive officer that will vest equally over the three successive anniversary dates of the grant date.