CECO Environmental Corp. announced that Jeffrey Lang, the company's Chief Executive Officer, President and a director, has decided to step down as CEO, President and a member of the Board of Directors as of February 1, 2017.  The board has appointed Dennis Sadlowski, currently a member of the board, to serve as interim CEO while a search process is conducted to identify a permanent CEO.  Mr. Lang has agreed to be available to the company through a transition process. Mr. Sadlowski, 55, previously held a number of senior leadership roles including CEO of Siemens Energy and Automation, COO of LSG Sky Chefs, and CEO of International Battery.