Diane Hendricks Tops Wisconsin’s Wealth Rankings in Forbes 2025 List

BELOIT, Wis. — Diane Hendricks, co-founder of ABC Supply Co., has surpassed the owner of Menards to become the richest person in Wisconsin, according to Forbes’ 2025 list. Hendricks has an estimated net worth of $21.9 billion.

Living in Afton, a small community between Beloit and Janesville, Hendricks is one of only 10 women recognized as the wealthiest individuals in their respective states across the U.S. Her success primarily stems from her work in the construction industry, where ABC Supply Co. has become one of the largest wholesale distributors of roofing, siding, and windows.

In recent years, Hendricks has focused on philanthropy and community development, and she has made significant investments in various local projects. She continues to inspire many through her entrepreneurial spirit and dedicated contributions to her community.

Forbes’ rankings reflect the growing influence of female entrepreneurs in business leadership roles and economic contributions. Hendricks’ rise to the top of the wealth chart highlights her achievements and the potential for greater representation of women in business.