[Form 4] S&T BANCORP INC Insider Trading Activity

Rhea-AI Filing Summary

S&T Bancorp (STBA) reported an insider transaction by a director. On 10/28/2025, the director purchased 2,500 shares of common stock at $36.5451 per share (transaction code P), bringing direct beneficial ownership to 44,985 shares after the trade. The filing also lists 1,290 Director Restricted Stock Units, each representing a right to receive one common share. These RSUs vest in 364 days from the date of issuance, with shares delivered upon vesting.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

GRUBE JEFFREY D

(Last) (First) (Middle)

800 PHILADELPHIA STREET

(Street)

INDIANA PA 15701

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
S&T BANCORP INC [ STBA ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
10/28/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	10/28/2025		P		2,500	A	$36.5451	44,985	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Director Restricted Stock Units	(1)							(2)	(2)	Common Stock	1,290		1,290	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive one share of S&T Bancorp, Inc. common stock.

2. The restricted stock units vest in 364 days from date of issuance. Vested shares will be delivered to the reporting person upon vesting.

	/s/ Jackie Kennane, attorney-in-fact for Jeffrey D. Grube	10/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction was reported for STBA?

A director purchased 2,500 shares of S&T Bancorp common stock on 10/28/2025 at $36.5451 per share (code P).

How many STBA shares does the director own after the transaction?

The director directly owns 44,985 shares following the reported purchase.

What was the price paid in the STBA insider purchase?

The purchase price was $36.5451 per share.

What derivative holdings does the STBA director have?

The filing shows 1,290 Director Restricted Stock Units, each convertible into one share of common stock.

When do the STBA director's RSUs vest?

The RSUs vest in 364 days from their date of issuance, with shares delivered upon vesting.

Was this Form 4 filed by a single reporting person?

Yes. It was filed by one reporting person.