TriMark USA, the Mansfield, Mass.-based multi-branch foodservice equipment and supplier dealer, announced Oct. 3 that Terry O’Brien has been named CEO, succeeding Tom Wienclaw, who resigned as CEO to pursue other endeavors. TriMark also said it appointed Jim Clough to serve as chairman of the board. O’Brien joins TriMark from Chef Holdings, the parent company of CTI Foods and Liguria…