A U.S. Olympic Committee statement says CEO Scott Blackmun is leaving due to prostate cancer.
The Olympic Committee demanded the entire USA Gymnastics board of directors resign or face termination as the sport's national governing body.
After former team doctor Larry Nassar was convicted, the entire USA Gymnastics board resigned at the request of the U.S. Olympic Committee.
USA Gymnastics says it "has not sought and will not seek any money from McKayla Maroney for her brave statements."
Several women who have accused the former sports doctor spoke out against him during his sentencing hearing Tuesday.
Olympic gold medalist Simone Biles says she was abused by Team USA's then-doctor Larry Nassar.
Sports doctor Larry Nassar pleaded guilty to three child pornography-related charges in July.
Dr. Larry Nassar entered his plea during a court hearing in Michigan. He now faces at least 25 years behind bars.