[8-K] S&T BANCORP INC Reports Material Event

Rhea-AI Filing Summary

S&T Bancorp, Inc. (STBA) furnished its earnings materials for the three and nine months ended September 30, 2025. The company announced results via a press release furnished under Item 2.02, with additional supplemental information furnished under Item 7.01. Both documents are attached as Exhibits 99.1 and 99.2, and the supplemental deck is also available on the company’s website. These materials are furnished and not deemed filed under the Exchange Act.

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

October 23, 2025

Date of Report (date of earliest event reported)

S&T BANCORP, INC

(Exact name of registrant as specified in its charter)

Pennsylvania

0-12508

25-1434426

(State or other jurisdiction of incorporation or organization)

(Commission File Number)

(I.R.S. Employer Identification No.)

800 Philadelphia Street

Indiana

PA

15701

(Address of Principal Executive Offices)

(Zip Code)

(800) 325-2265

Registrant's telephone number, including area code

(Not applicable)

(Former name or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class			Trading Symbol(s)			Name of each exchange on which registered
Common Stock, $2.50 par value			STBA			NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 2.02 Results of Operations and Financial Condition.

On October 23, 2025 S&T Bancorp Inc. (S&T) announced by press release its earnings for the three and nine months ended September 30, 2025. A copy of the press release is attached hereto as Exhibit 99.1 and is incorporated by reference in this Item 2.02. The information contained in this Item 2.02 of this Report on Form 8-K, including Exhibit 99.1, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Exchange Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 7.01 Regulation FD Disclosure.

In connection with the issuance of its earnings for the three and nine months ended September 30, 2025, S&T has also made available on its website materials that contain supplemental information about S&T’s financial results (“Supplemental Information”). A copy of the supplemental information is attached hereto as Exhibit 99.2 and is incorporated by reference in this Item 7.01. The information contained in this Item 7.01 of this Report on Form 8-K, including Exhibit 99.2, is being furnished and shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that section, nor shall such information be deemed incorporated by reference in any filing under the Securities Exchange Act of 1933, as amended (the “Securities Act”), or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.						Description of Exhibit
99.1						Press Release
99.2						Supplemental Information
104						Cover Page Interactive Data File (embedded in the cover page formatted in Inline XBRL)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed by the undersigned thereunto duly authorized.

			S&T Bancorp, Inc.
			/s/ Mark Kochvar
October 23, 2025			Mark Kochvar Senior Executive Vice President, Chief Financial Officer

FAQ

What did S&T Bancorp (STBA) announce in this 8-K?

The company furnished its earnings materials for the three and nine months ended September 30, 2025, including a press release and supplemental information.

Which 8-K items apply to STBA’s disclosure?

Earnings information is furnished under Item 2.02, and supplemental investor materials are furnished under Item 7.01.

What exhibits are included with the filing for STBA?

Exhibit 99.1 is the press release; Exhibit 99.2 is supplemental information; Exhibit 104 is the Cover Page Inline XBRL data file.

Are the earnings materials considered filed or furnished?

They are furnished and not deemed filed under the Exchange Act, as stated in Items 2.02 and 7.01.

When were the earnings materials announced?

S&T Bancorp announced them on October 23, 2025.

Where can investors access the supplemental information?

The supplemental materials are attached as Exhibit 99.2 and are also made available on the company’s website.

Who signed the 8-K for STBA?

It was signed by Mark Kochvar, Senior Executive Vice President and Chief Financial Officer, on October 23, 2025.