S&T BANCORP INC — Director's Dealing 2025

Apr 4, 2025

SEC Form 4/A — Form 4/A

Issuer: S&T BANCORP INC (STBA)
CIK: 0000719220
Period of Report: 2025-04-01

Reporting Person: Smydo Rachel Lynn (Executive Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-04-01	Common Stock	M	1610	$37.15	Acquired	6035	Direct
2025-04-01	Common Stock	F	549	$37.15	Disposed	5486	Direct
2025-04-01	Common Stock	M	320	$37.15	Acquired	5806	Direct
2025-04-01	Common Stock	F	109	$37.15	Disposed	5697	Direct
2025-04-01	Common Stock	M	643	$37.15	Acquired	6340	Direct
2025-04-01	Common Stock	F	219	$37.15	Disposed	6121	Direct
2025-04-01	Common Stock	M	698	$37.15	Acquired	6819	Direct
2025-04-01	Common Stock	F	238	$37.15	Disposed	6581	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-04-01	Restricted Stock Units	$	A	1610	Acquired		Common Stock (1610)	Direct
2025-04-01	Restricted Stock Units	$	M	1610	Disposed		Common Stock (1610)	Direct
2025-04-01	Restricted Stock Units	$	M	320	Disposed		Common Stock (320)	Direct
2025-04-01	Restricted Stock Units	$	M	643	Disposed		Common Stock (643)	Direct
2025-04-01	Restricted Stock Units	$	M	698	Disposed		Common Stock (698)	Direct
2025-04-01	Restricted Stock Units	$	A	1819	Acquired		Common Stock (1819)	Direct

Holdings (Derivative)

Security	Exercise Price	Expiration	Underlying	Shares	Ownership
Restricted Stock Units	$		Common Stock (2550)	2550	Direct

Footnotes

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 Registrant awarded a special grant to the executive officer that will vest equally over the three successive anniversary dates of the grant date.

F5: Acquired upon achievement of certain performance criteria pursuant to the performance-based restricted stock units granted April 1, 2022, under the Issuer's 2022 Long Term Incentive Plan. The performance period for the restricted stock units was January 1, 2022, until December 31, 2024, with achievement of the applicable performance criteria subject to determination by the Issuer's Compensation Committee. This determination was obtained on March 25, 2025.

F6: The restricted performance units awarded on April 1, 2022 vesting on April 1, 2025. 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, 2023. Vested shares will be delivered to the reporting person upon vesting.

F8: 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.

F9: 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.

F10: 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.

F11: The restricted stock units vest in three equal annual installments beginning April 1, 2025. In accordance with a pre-established deferral election made by the reporting person, vested shares will be delivered to the reporting person upon separation from service or sooner upon the occurrence of certain events.

F12: Filing delay due by April 3, 2025, caused by software unable to attach footnotes to awards.

F13: 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.