SeaWorld Entertainment Inc. SEAS, -1.05% said Monday that Sergio Rivera, the company's chief executive, resigned from his position on April 4. Rivera assumed the role on Nov. 11, 2019. He has also stepped down from the board. SeaWorld's Chief Financial Officer Marc Swanson has been named Rivera's successor. Elizabeth Castro Gulacsy has moved into the CFO role after serving as chief accounting officer. And Walter Bogumil has been named chief accounting officer. He was previously chief strategy officer. All new roles are effective immediately. Executive officers have taken a 20% base pay cut until SeaWorld parks are back in operation. SeaWorld stock has gained 5.6% in Monday premarket trading, but has fallen 62.3% over the past year. The S&P 500 index SPX, -0.84% is down 14% for the period.