S&T Bancorp director exercises 1,290 RSUs

S&T Bancorp Inc. director Christina Anne Cassotis reported compensation-related equity activity.

Rhea-AI Filing Summary

S&T Bancorp Inc. director Christina Anne Cassotis reported compensation-related equity activity. On May 12, 2026, she exercised 1,290 Director Restricted Stock Units, receiving the same number of common shares at a reference price of $44.03 per share.

She also received a new grant of 1,136 Director Restricted Stock Units, each representing a contingent right to one share of common stock. These units vest in 364 days from issuance. After these moves, she directly holds 16,601.7854 common shares. No open-market buying or selling was reported.

Insider Trade Summary

1,290 shares exercised/converted

Exercise 3 txns

Insider Cassotis Christina Anne

Role Director

Type	Security	Shares	Price	Value
Exercise	Director Restricted Stock Units	1,290	$0.00	$0.00
Grant/Award	Director Restricted Stock Units	1,136	$0.00	$0.00
Exercise	Common Stock	1,290	$44.03	$57K

Holdings After Transaction: Director Restricted Stock Units — 1,136 contracts (Direct); Common Stock — 16,601.7854 shares (Direct)

Footnotes (3)

1. F1. Upon vest, automatically converts into equal number of shares of common stock.
2. F2. Each restricted stock unit represents a contingent right to receive one share of S&T Bancorp, Inc. common stock.
3. F3. The restricted stock units vest in 364 days from date of issuance. Vested shares will be delivered to the reporting person upon vesting.

Key Figures

RSUs exercised: 1,290 shares Reference share price: $44.03 per share New RSU grant: 1,136 units +1 more

4 metrics

RSUs exercised 1,290 shares Director Restricted Stock Units converted to common stock on May 12, 2026

Reference share price $44.03 per share Common Stock line associated with 1,290-share exercise

New RSU grant 1,136 units Director Restricted Stock Units granted as compensation on May 12, 2026

Common shares held after 16,601.7854 shares Direct S&T Bancorp common stock ownership following reported transactions

Key Terms

Director Restricted Stock Units, Exercise or conversion of derivative security, Grant, award, or other acquisition, contingent right to receive one share, +1 more

5 terms

Director Restricted Stock Units financial

"security_title: "Director Restricted Stock Units""

Director restricted stock units are promises by a company to give board members company shares in the future, usually after a set time or when certain conditions are met. They matter to investors because they can dilute existing shareholders when converted to shares and reveal how the board’s pay is tied to the company’s performance—like a delayed paycheck in company stock that aligns a director’s interests with shareholders and can affect share supply when released.

Exercise or conversion of derivative security financial

"transaction_code_description: "Exercise or conversion of derivative security""

Grant, award, or other acquisition financial

"transaction_code_description: "Grant, award, or other acquisition""

contingent right to receive one share financial

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

vest financial

"The restricted stock units vest in 364 days from date of issuance."

A vest is the process by which an employee earns the right to receive certain benefits or ownership interests, such as stock or retirement funds, over time. It’s similar to earning a reward gradually, ensuring that the benefit becomes fully yours only after a set period or meeting specific conditions. This makes it important for investors because it determines when they can actually claim or use those benefits.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transactions did S&T Bancorp (STBA) director Christina Cassotis report?

Director Christina Cassotis exercised 1,290 Director Restricted Stock Units into common stock and received a new grant of 1,136 Director Restricted Stock Units. These transactions are compensation-related awards and conversions, not open-market purchases or sales of S&T Bancorp shares.

How many S&T Bancorp (STBA) shares does Christina Cassotis hold after this Form 4?

Following the reported transactions, Christina Cassotis directly owns 16,601.7854 shares of S&T Bancorp common stock. This reflects settlement of 1,290 Director Restricted Stock Units into shares while also recording a new award of 1,136 restricted stock units that will vest in the future.

Were there any open-market buys or sells in this S&T Bancorp (STBA) Form 4?

No open-market purchases or sales were reported. The Form 4 shows an exercise of 1,290 Director Restricted Stock Units into common shares and a grant of 1,136 new restricted stock units, all classified as acquisitions rather than discretionary market trades.

What are S&T Bancorp (STBA) Director Restricted Stock Units as described in this filing?

Each Director Restricted Stock Unit represents a contingent right to receive one share of S&T Bancorp common stock. According to the footnotes, units automatically convert into an equal number of common shares upon vesting, and vested shares are delivered to the reporting person at that time.

When do the newly granted S&T Bancorp (STBA) restricted stock units vest for Christina Cassotis?

The newly granted 1,136 Director Restricted Stock Units vest in 364 days from the date of issuance. Once vested, they automatically convert into an equal number of S&T Bancorp common shares, which are then delivered to Christina Cassotis as part of her director compensation.

AI-generated analysis. How Rhea-AI works. Not financial advice.

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 05/14/2026 - 03:55 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Cassotis Christina Anne

(Last) (First) (Middle)

800 PHILADELPHIA STREET

(Street)

INDIANA PENNSYLVANIA 15701

(City) (State) (Zip)

UNITED STATES

(Country)

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)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/12/2026

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

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

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

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	05/12/2026		M(1)		1,290	A	$44.03	16,601.7854	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	(2)	05/12/2026		M(1)			1,290	(3)	(3)	Common Stock	1,290	$0	0	D
Director Restricted Stock Units	(2)	05/12/2026		A		1,136		(3)	(3)	Common Stock	1,136	$0	1,136	D

Explanation of Responses:

1. Upon vest, automatically converts into equal number of shares of common stock.

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

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

Remarks:

	/s/ Jackie Kennane, attorney-in-fact for Christina Anne Cassotis	05/14/2026
	** 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.
* Form 4: SEC 1474 (03-26)