Warburg Pincus L.L.C. has agreed to purchase the clinical trial outsourcing firm ReSearch Pharmaceutical Services Inc. for $227.3 million in an all-cash transaction.
Founded in 1998, Fort Washington-based ReSearch had 2009 revenues of $200.5 million; it has 2,500 employees.
The company had filed a registration statement for an initial-public offering.
Warburg Pincus is a private-equity firm. - Bob Fernandez