Wisconsin River Mutual Insurance Company

Wisconsin Municipal Mutual Insurance Company

Wisconsin Mutual Insurance Company

Wisconsin Physicians Service Insurance Corporation

Wisconsin Reinsurance Corporation

Wisconsin Lawyers Mutual Insurance Company

Windsor Mount Joy Mutual Insurance Company

Wingsail Insurance Company

Winhealth Partners

Wisconsin County Mutual Insurance Corporation

Wisconsin Health Care Liability Insurance Plan

Windhaven National Insurance Company

Windsor Life Insurance Company

Williams Progressive Life & Accident Insurance Co.

Williamsburg National Insurance Company

Wilmington Insurance Company

Wilshire Insurance Company

Wilson Mutual Insurance Company

Wilton Reassurance Company

Wilton Reassurance Life Company Of New York