EX-23.1 3 ex-231202010k.htm EX-23.1
Exhibit 23.1
Consent of Ernst & Young LLP, Independent Registered Public Accounting Firm
We consent to the incorporation by reference in the following Registration Statements:
1)Registration Statement (Form S-3 No. 333-226488) of S&T Bancorp, Inc. pertaining to the automatic shelf registration filed August 1, 2018,
2)Registration Statement (Form S-3 No. 333-156555) of S&T Bancorp, Inc. pertaining to the Dividend Reinvestment and Stock Purchase Plan,
3)Registration Statement (Form S-8 No. 333-194083) of S&T Bancorp, Inc. pertaining to the 2014 Incentive Plan, and
4)Registration Statement (Form S-8 No. 333-156541) of S&T Bancorp, Inc. pertaining to the Thrift Plan for Employees of S&T Bank;
of our reports dated February 26, 2021 with respect to the consolidated financial statements of S&T Bancorp, Inc. and the effectiveness of internal control over financial reporting of S&T Bancorp, Inc. included in this Annual Report (Form 10-K) of S&T Bancorp, Inc. for the year ended December 31, 2020.

/s/ Ernst & Young LLP
Pittsburgh, Pennsylvania
February 26, 2021