Maxar said Monday McCombe will stay as an adviser for a transition period and Wirasekara will temporarily perform CFO duties until the company finds a permanent replacement.
Wirasekara served as CFO of MacDonald, Dettwiler and Associates for 13 years before MDA purchased DigitalGlobe through a $3.6 billion deal that closed in October 2017.
He joined MDA in 1992 as manager of operations information and financial management. Prior to that, he held financial management roles at a multinational organization and worked at Ernst & Young Chartered Accountants for five years.
McCombe previously served as MDA’s senior vice president of strategy and finance at MDA in addition to his roles as SVP of finance and legal within its U.S.-based operating company SSL.