Four partners in the toxic torts practice of Pittsburgh-based Thorp Reed & Armstrong will be leaving the firm for former merger candidate Dinsmore & Shohl.

James Zeszutek, Michael R. Bucci Jr. and P.J. Murray of the Pittsburgh office, and Denise D. Klug of the firm’s Wheeling, W.Va., office, told the firm Tuesday that they would be leaving, Managing Partner Douglas E. Gilbert said. All but Klug are going to Dinsmore & Shohl’s Pittsburgh office.