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

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

Founder of Panera Bread Ken Rosenthal passed away on Friday at the age of 81. He is survived by his wife and their four children.

Kenneth "Ken" Rosenthal, founder of St. Louis Bread Company and later Panera Bread, passed away peacefully at home on Friday, ...