Exhibit 21
SUBSIDIARIES OF THE REGISTRANT
S&T Bancorp, Inc., a Pennsylvania corporation, is a financial holding company. The table below sets forth all of our subsidiaries, except certain inactive subsidiaries, as to state or jurisdiction of organization. 
Subsidiary
State or Jurisdiction of Organization
 
 
S&T Bank
Pennsylvania
 
 
9th Street Holdings, Inc.
Delaware
 
 
S&T Bancholdings, Inc.
Delaware
 
 
S&T Insurance Group, LLC
Pennsylvania
 
 
S&T Professional Resources Group, LLC
Pennsylvania
 
 
S&T-Evergreen Insurance, LLC (sold 1/1/2018)
Pennsylvania
 
 
S&T Settlement Services, LLC
Pennsylvania
 
 
Stewart Capital Advisors, LLC
Pennsylvania
 
 
STBA Capital Trust I
Delaware
 
 
Commonwealth Trust Credit Life Insurance Company
Arizona
 
 
DNB Capital Trust I
Delaware
 
 
DNB Capital Trust II
Delaware
 
 
DNB Financial Services, Inc.
Pennsylvania
 
 
Downco, Inc.
Pennsylvania
 
 
DN Acquisition Company, Inc.
Pennsylvania