Felipe Athayde, chief executive of Regis Corp., resigned Thursday after about 15 months leading the Minneapolis-based franchisor of hair salons.
The company's board of directors named Matthew Doctor as interim CEO while it conducts a search for a successor.
The news shook up the value of a company that has been under pressure all year from investors. Regis shares fell 15.5% to $1.69 a share, which appeared to be an all-time low. The company has lost about 80% of its value this year.
Athayde, who received a $2.5 million signing bonus when he took the helm, continued to change the ownership mix of the company's salons started by his predecessor.
"The Board is grateful for Felipe's leadership and the franchise expertise he brought to our transformed business model," David Grissen, chairman of Regis' board of directors, said in a statement.
"Felipe assembled and developed a stellar team, Matt [Doctor] included, with complementary skill sets across operations, development, technology, recruiting and finance," Grissen added.
Doctor, who has experience in franchise operations with several restaurant operations, was a consultant to Regis before being named as executive vice president and chief strategy officer in February.
In a related move, the board announced that Jim Lain, president of Regis' franchise operation, was appointed its chief operating officer.