Aurora Cannabis Inc. shares /zigman2/quotes/210559470/composite ACB -7.59% /zigman2/quotes/203734337/delayed CA:ACB -7.18% fell 1.8% in premarket trade Monday, after the company said its Chief Corporate Officer Cam Battley is stepping down. MKM analyst Bill Kirk reiterated his sell rating on the stock on the news and lowered his price target to C$2.00 ($1.52) from C$3.00, noting that the move is the third major management shake-up in the cannabis industry this year, following the ouster of Canopy Growth Corp.'s /zigman2/quotes/200603886/composite CGC +1.84% /zigman2/quotes/202205609/delayed CA:WEED -1.06% co-Founder and CEO Bruce Linton and Aphria Inc.'s /zigman2/quotes/207425803/composite APHA +4.57% /zigman2/quotes/205566616/delayed CA:APHA +1.46% former CEO Vic Neufeld. "The sudden departure, during a period of insider selling, dwindling cash to cover payables, and sector turmoil does not send a strong message to investors," Kirk wrote in a note. Aurora, the most widely held stock on Robinhood, disappointed investors in November when it carried out a highly dilutive convertible debt swap. Shares have fallen 55% in 2019, while the ETFMG Alternative Harvest ETF /zigman2/quotes/204332491/composite MJ -1.90% has fallen 31% and the S&P 500 /zigman2/quotes/210599714/realtime SPX -0.82% has gained 28.5%.