Bell Insurance - Commercial Lines Account Manager. If you like to work with people in a family atmosphere, enjoy great benefits and provide unequaled personal service to every customer, consider a career with Bell Bank. Company Information. Bell Bank was founded in 1966 and headquartered in Fargo, North Dakota. It is the largest family-and employee-owned bank in the upper Midwest, and one of the largest in the nation, with assets of more than $10...