TORONTO-- Actor-filmmaker Paul Gross plans to leave Whizbang Films, the production company he co-founded, by the end of this month.

The writer, director and star of "Passchendaele" says he wants to concentrate his "energies on a few select projects."

Gross joined forces with producer Frank Siracusa in 1999 to launch Whizbang, which is behind films including the Genie Award-winning "Passchendaele" as well as "Men with Brooms" and "Hobo with a Shotgun."

Its TV credits include "ZOS: Zone of Separation" and "The Yard."

The company's 2012/2013 lineup includes the film "Cottage Country" and the TV projects "The Horses of McBride" and "Beauty and the Beast."

Gross plans to begin shooting "Hyena Road" -- in which he's the writer, director, producer and star -- in January.

"We created some wonderful projects during my time with Whizbang and I am very proud of the contributions our company has made to our industry," Gross said Monday in a statement.

"But I feel the time has come to concentrate my energies on a few select projects. While I will miss Whizbang enormously, I will watch their progress with enthusiastic pride."

Siracusa credited Gross with playing "a major role in shaping the values of the company."

"His depth of understanding the art of storytelling helped set the bar in deciding the projects Whizbang participates in," he said.

"We will continue to support Paul in his commitment to follow his passion projects."