Company: STBA
Filing Date: 2025-11-06
Form Type: 10-Q
Source: 0000719220-25-000091
Chunk: 8

Company: S&T BANCORP INC
Filing Date: 2025-11-06
Form: 10-Q
Item: Part II, Item 1A
Chunk 8
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10b5-1 trading arrangement’ or ‘non-Rule 10b5-1 trading arrangement,’ as each term is defined in Item 408(a) of Regulation S-K.

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Table of ContentsS&T BANCORP, INC. AND SUBSIDIARIES

Item 6. Exhibits

31.1Rule 13a-14(a) Certification of the Chief Executive Officer31.2Rule 13a-14(a) Certification of the Chief Financial Officer32Rule 13a-14(b) Certification of the Chief Executive Officer and Chief Financial Officer101.INSXBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document101.SCHXBRL Taxonomy Extension Schema101.CALXBRL Taxonomy Extension Calculation Linkbase101.DEFXBRL Taxonomy Extension Definition Linkbase101.LABXBRL Taxonomy Extension Label Linkbase101.PREXBRL Taxonomy Extension Presentation Linkbase104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibits 101)

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Table of ContentsS&T BANCORP, INC. AND SUBSIDIARIES

SIGNATURES

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

S&T Bancorp, Inc.(Registrant)November 6, 2025/s/ Mark KochvarMark KochvarSenior Executive Vice President andChief Financial Officer(Principal Financial Officer and Duly Authorized Signatory)

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