Aurora Cannabis Inc. ACB, -0.88% ACB, -0.67% announced Saturday that Chief Corporate Officer Cam Battley has left the company. Battley stepped down effective Friday, the company said in a statement. Battley joined Aurora in 2016 and was instrumental in the Canadian marijuana producer’s international growth. „Aurora is grateful for his contributions to the company’s growth and role as a global medical cannabis leader,” the statement read. Last month, Battley joined the board of MedReleaf Australia, a privately held medical cannabis company that Aurora has a stake in. „I am sure Cam will be successful as he moves on to tackle Australia,” Aurora CEO Terry Booth said in a statement. Aurora shares are down about 55% year to date, compared to the S&P 500’s 29% gain. Aurora stock has sunk 17% in the past month, after a disappointing earnings report in November that led to multiple analysts cutting their outlook for the company.