Gary LaBranche is moving on from his post as CEO of the Association for Corporate Growth, effective March 18. LaBranche will become CEO of the National Investor Relations Institute (NIRI). ACG CFO John O’Loughlin will serve as interim CEO.

LaBranche will still participate in ACG’s Leadership Week that will take place Feb. 13-16, including the Chapter Leadership Conference, Public Policy Summit, Partnership meeting, PERT meeting and Board meeting.

“Gary’s decision to accept a new CEO role is a loss for ACG, but we wish him all the best. ACG is stronger and healthier thanks to Gary’s transformative leadership over the past eight years,” says ACG global chairman and Victory Park Capital partner Jason Brown. 

ACG’s board has scheduled a conference call on Feb. 8 and an in-person meeting on Feb. 15 to discuss the next steps in the succession plan.