An architect of one of the signature bank M&A deals of 2013 summed it up as merely a conversation between two guys.

"It was just Dick Collins and me," says Bill Crawford, the chief executive of Rockville Financial (RCKB) in Connecticut. Collins is the chief executive of United Financial Bancorp (UBNK) in West Springfield, Mass., which agreed to combine with Rockville in November.

Limited Time Offer

Save $400 off your subscription. Special offer ends April 30, 2017.

14-Day Free Trial

No credit card required. Complete access to articles, breaking news and industry data.