MARK KOCHVAR - 31 Dec 2025 Form 5 Insider Report for S&T BANCORP INC (STBA)

Role: SR EXEC VICE PRESIDENT & CFO
Signature: /s/ Jackie Kennane, attorney-in-fact for Mark Kochvar
Issuer symbol: STBA
Transactions as of: 31 Dec 2025
Net transactions value: +$123,261
Form type: 5
Filing time: 13 Feb 2026, 16:24:33 UTC
Previous filing: 04 Apr 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
KOCHVAR MARK	SR EXEC VICE PRESIDENT & CFO	800 PHILADELPHIA STREET, INDIANA	/s/ Jackie Kennane, attorney-in-fact for Mark Kochvar	13 Feb 2026	0001157921

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	STBA	Common Stock	Other	$51,918	+1,319	+3.6%	$39.35	38,230	31 Dec 2025	401-k	F1
transaction	STBA	Common Stock	Other	$71,343	+1,813	+3.3%	$39.35	57,536	31 Dec 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
holding	STBA	Restricted Stock Units						2,401	31 Dec 2025	Common Stock	2,401		Direct	F3, F4, F5
holding	STBA	Restricted Stock Units						1,152	31 Dec 2025	Common Stock	1,152		Direct	F4, F6
holding	STBA	Restricted Stock Units						3,002	31 Dec 2025	Common Stock	3,002		Direct	F4, F7, F8

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

Explanation of Responses:

Id	Content
F1	These shares represent the YTD increase in shares held in a 401K/IRA plan.
F2	Increase due to reinvested dividends in a dividend reinvestment plan.
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, 2024. Vested shares will be delivered to the reporting person upon vesting.
F7	Filing delay due by April 3, 2025, caused by software unable to attach footnotes to awards.
F8	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.