The CEO and president of Culver's passed away over the weekend.
Phil Keiser, 60, died of natural causes on Saturday, according to a company spokesman.
Keiser worked for the company for 20 years, and led the company's 580 restaurants in 24 states.
According to a news release, co-founder Craig Culver take over as CEO on an interim basis.
“Culver’s would not be what it is today without Phil’s influence,” Craig Culver said in a news release. “Yet as great a loss as this is for us professionally, it doesn’t begin to touch how much Phil will be missed on a personal level. We hurt most deeply for his wife Betsy, and his children: son Nate, wife Bethany and their children Caprina, Linea and Landon; son Nick, wife Maria and their child Harper; and daughter Kelsey.”
Keiser would have turned 61 on Monday.