The shooter, thought to be a lone gunman, opened fire on Friday night.
After 60 years in the fashion apparel industry, he retired in 2005 to Williams Island, Aventura, Fla. with his wife, Sandy Price-Weinstock.
The management team of Tom Wilcher and Robin Sheldon will remain with the company.
Three months after Betsey Johnson LLC filed Chapter 11, the designer is preparing to unveil a new line that will debut in stores this spring.
On Monday, the New York-based apparel firm reported second-quarter earnings that, while down sharply, exceeded analysts’ consensus estimates.
According to a published report in La Repubblica, the designer will instead hold two shows independently.