Roy Mlakar will not remain with the Senators beyond June 30. ((Sean Kilpatrick/Canadian Press))

Roy Mlakar is out as president and chief executive officer of the Ottawa Senators.

Senators owner Eugene Melnyk confirmed Monday that Mlakar will leave the organization when his contract expires on June 30.

"Roy Mlakar's leadership over the past 13 years has been an impressive journey of achievement and success," Melnyk said in a statement.

"Roy has worked in professional sports for nearly 40 years. That depth of experience and leadership, along with his constant compassion and support for Ottawa's many charitable organizations, has contributed greatly to defining the Ottawa Senators and our relationship with our community and our fans." 

Mlakar, 58, will be replaced by chief operating officer Cyril Leeder, with Erin Crowe serving as executive vice-president and chief financial officer.

Bryan Murray will perform the dual role of general manager and executive vice-president.

Mlakar is a long-time sports executive, having spent seven seasons with the Los Angeles Kings — five as an executive vice-president and two as team president — and two seasons as chief operating officer of the Pittsburgh Penguins before joining the Senators on June 3, 1996.

He also worked in the American Hockey League, the National Basketball Association and Major League Baseball.

With files from The Canadian Press