EX-21 2 a2223555zex-21.htm EX-21
QuickLinks -- Click here to rapidly navigate through this document


EXHIBIT 21

EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT

                                    Name
   State of Incorporation
 
​ ​ ​ ​ ​
MainSource Bank     Indiana  
MainSource Insurance, LLC     Indiana  
MSB Investments of Nevada, Inc.     Nevada  
MSB Holdings of Nevada, Inc.     Nevada  
MSB of Nevada, LLC     Nevada  
MainSource Statutory Trust I     Connecticut  
MainSource Statutory Trust II     Connecticut  
MainSource Statutory Trust III     Delaware  
MainSource Statutory Trust IV     Delaware  
MainSource Capital Statutory Trust I     Delaware  
MSB Realty, Inc.     Maryland  
MainSource Title, LLC     Indiana  
Insurance Services Marketing, LLC     Indiana  
MainSource Risk Management     Nevada  
New American Real Estate, LLC     Indiana  



QuickLinks

EXHIBIT 21 — SUBSIDIARIES OF THE REGISTRANT