Billionaire Profile
Diane Hendricks
Global Rank
#111

Image: Hendrick de Clerck | Public domain | via Wikimedia Commons

Diane Hendricks

CEO, Building supplies
UNITED STATES
Real-Time Net Worth
$22.333B
Estimated based on Building supplies stock value as of March 6, 2026
0% (24h)
Age
78
Source
Building supplies
Industry
Construction & Engineering
Citizenship
UNITED STATES

Biography

Diane Hendricks is an American billionaire businesswoman and philanthropist, best known as the co-founder and chair of ABC Supply Co., Inc. With an estimated net worth of $21.9 billion as of December 2024, she has consistently been ranked as one of America's richest self-made women. Her wealth originates from the building supplies industry, specifically through ABC Supply, the largest wholesale distributor of roofing and other building materials in North America. Hendricks' career began in real estate before transitioning to the building supply sector, where she made strategic acquisitions and fostered strong customer relationships. Her achievements include expanding ABC Supply to over 900 locations, generating billions in revenue, and receiving recognition for her leadership and entrepreneurial spirit.

Fact Checked
Verified by Editorial Team
Live Data
Updated 3/6/2026

Wealth Over Time

In-Depth Profile

Early Life

Diane Marie Smith, later Diane Hendricks, was born on March 2, 1947, in Mondovi, Wisconsin. Raised on a dairy farm in Osseo, Wisconsin, she learned the value of hard work from a young age. At seventeen, she had her first child and graduated from Osseo-Fairchild High School in 1965. She briefly worked assembling pens at the Parker Pen Company. Before the age of 21, she pursued a career in real estate, earning her broker's license and selling custom homes.

Rise to Success

In the early 1970s, she met Ken Hendricks, a roofer, and they married in 1975. They began buying and renovating homes and industrial properties in Beloit, Wisconsin. In 1982, they co-founded ABC Supply Co., Inc., with a loan, which grew into the largest wholesale distributor of roofing materials in the United States. Following Ken Hendricks' death in 2007, Diane took over as chairwoman, leading the company to further expansion.

Key Business Strategies

Diane Hendricks expanded ABC Supply through strategic acquisitions, including Bradco in 2010 and L&W Supply in 2016. Under her leadership, the company now operates over 900 branches across the U.S. and Canada. A key factor in her success has been her focus on customer service and building strong relationships with contractors.

Philanthropy

Diane Hendricks is known for her philanthropic efforts, primarily focused on her community in Beloit, Wisconsin. She has contributed to local economic development initiatives, rebuilding blocks, and bringing new businesses to the state. She has also supported educational and arts initiatives. Hendricks has donated to Republican candidates and causes, including Donald Trump. She has contributed $5,000,000 to the Super PAC, Make America Great Again, Inc., as of 2023.

Career Milestones

1965

Graduated High School

Graduated from Osseo-Fairchild High School.

1975

Married Ken Hendricks

Married roofing contractor Ken Hendricks and began a real estate investment journey.

1982

Co-founded ABC Supply

Co-founded ABC Supply Co., Inc., with her husband.

2007

Assumed Leadership of ABC Supply

Became the chairwoman of ABC Supply following the death of her husband.

2010

Acquired Bradco

Led the acquisition of Bradco, expanding ABC Supply's market presence.

2016

Acquired L&W Supply

Led the acquisition of L&W Supply.

Philanthropy & Social Impact

Economic Development

Community Revitalization

$XB

Rebuilt entire blocks in Beloit and brought in several new businesses.

Political

Political Donations

$5M+

Contributed to Republican candidates and causes.

Business Philosophy & Leadership

Notable Quotes

""I felt like I was risking it all.""

""I don't want to be a farmer, and I don't want to marry a farmer.""

Leadership Principles

Resilience

Overcoming obstacles and challenges.

Customer Focus

Maintaining strong relationships with contractors.

Strategic Acquisitions

Expanding the company through smart acquisitions.

Controversies & Challenges

2010-2014

Tax Avoidance

Did not pay Wisconsin state income taxes for four out of five years.

2016

Property Tax Assessment

Investigation of her home's assessment found it had been undervalued.

2020

Resignation from Beloit College Board

Resigned from the board, reportedly due to the college's involvement with the Black Lives Matter movement.