ForAgentsOnly Login and Registration Guide The Progressive Corporation is a United States-based insurance company, the 3rd largest insurance carrier, and the No. 1 Commercial Auto Insurer in America. The company was co-founded on 10th March 1937 by Mr. Jack Green and Mr. Joseph M. Lewis as Progressive Insurance Company. It is currently headquartered in Mayfield Village, Ohio, … Continue reading Progressive Agent Login at www.foragentsonly.com