Kenneth “Ken” Rosenthal, who founded the company that later became Panera Bread, died on Friday, Feb. 14. He was 81.

Before Ken Rosenthal opened the bakery-cafe that would become Panera Bread, he was a businessman who didn’t know how to cook ...

Kenneth “Ken” Rosenthal, founder of the company that later became known as Panera Bread, has passed away. He was 81.