Alliant Insurance Services, Inc.

Alliant Insurance Services, Inc. is a national insurance brokerage and consulting firm founded in 1925. It provides risk management and consulting services to global corporations, regional businesses and high-net-worth individuals across the United States, operating from more than 100 offices nationwide. The firm is the fifth-largest insurance broker and consulting firm in the country and employs more than 14,000 people.

The company's two principal lines of business are insurance brokerage and risk management consulting. Consulting is positioned as a catalyst for client growth rather than solely as protection against loss, and this segment recorded nearly 30% year-over-year growth. Industries covered include insurance, risk management, consulting and financial services.

Alliant is majority employee-owned. It states that its structure gives industry leaders freedom to innovate, with support to excel, and that it removes barriers between its expertise and its clients. The firm describes itself as embracing bold ideas and entrepreneurial thinking.