Imax says in an SEC filing that COO Gary Moss will leave at the end of this month and not be replaced. Imax created the COO job, reporting to CEO Rich Gelfond, in 2009 when Moss joined. He had been a consultant and an executive at a concert promotion subsidiary of Live Nation and at EMI Group Canada. An Imax insider says that the company believes it doesn’t need a COO anymore. Over the last six months the large screen theater firm has bulked up its management ranks — for example adding a new chief marketing officer, SVP for human resources, head of strategy, head of business development, and CEO for Imax China. Moss was not listed as one of Imax’s five highest paid employees in its latest proxy statement.