MONTREAL — Dollarama is turning to the fourth generation of its founding family, with the son of the current chief executive about to take over as CEO of Canada’s largest chain of discount stores.

Larry Rossy — who has led the Montreal-based company through a period of rapid growth since it went public in October 2009 — will continue as executive chairman, but his son Neil Rossy becomes Dollarama’s president and CEO on May 1.

“I’m excited to take the helm of a company that is part of my DNA,” Neil, 46, said Wednesday during a conference call about the company’s fourth-quarter and 2015 results.