BillionaireNet
Rales
Mitchell Rales
Rank #926
UNITED STATESManufacturingManufacturing, investments

Mitchell Rales

Net Worth
$4.376B
+0.63% (24h)
Mitchell Rales is an American businessman, art collector, and philanthropist. He is best known as the co-founder of Danaher Corporation, a global science and technology innovator. Rales's career has been marked by strategic acquisitions and a focus on operational excellence. He is also the founder of the Glenstone Museum, a contemporary art museum in Potomac, Maryland, showcasing a collection of post-World War II art. Rales, through the Glenstone Foundation, has committed billions to support the arts and education, demonstrating a strong commitment to philanthropy. As of December 2025, his net worth is estimated to be $4.4 billion, with his wealth primarily stemming from manufacturing and investments.

The Full Dossier

Early Life

Mitchell P. Rales was born in August 1956, in Pittsburgh, Pennsylvania, and grew up in Bethesda, Maryland. He is one of four sons of Ruth and Norman Rales. His father was a successful businessman and philanthropist. Rales graduated from Walt Whitman High School in 1974, where he was captain of the football and baseball teams. He then pursued a degree in business administration at Miami University in Oxford, Ohio, graduating in 1978.

Rise to Success

Rales began his career working for his father's real estate firm. In 1979, he co-founded Equity Group Holdings with his brother Steven Rales. They acquired a diverse range of businesses, and in 1984, they transformed the company into Danaher Corporation. Under the leadership of the Rales brothers, Danaher grew rapidly through an aggressive acquisition strategy, acquiring numerous companies in various industries like life sciences, healthcare, and industrial technologies.

Key Business Strategies

Rales and his brother focused on expanding Danaher through strategic acquisitions and also on optimizing the company's operations and structure. The company's success is partly attributed to the Danaher Business System, a set of management principles focused on continuous improvement. Rales served as the chairman of Danaher's executive committee. He was also involved in the founding of Colfax Corporation and served on the board of Fortive Corporation until June 2021.

Philanthropy

Mitchell Rales, along with his wife, Emily Wei Rales, is known for his significant philanthropic contributions. They signed the Giving Pledge, committing to donate the majority of their wealth to charitable causes. In 2021, Rales donated $1.9 billion to the Glenstone Foundation, which operates the Glenstone Museum. Rales and his wife established Glenstone in Potomac, Maryland, to showcase their collection of contemporary art. They have given over $2 billion to support the arts and education. Rales served as president of the National Gallery of Art from 2019 to 2024.

Career Timeline

2019

President of the National Gallery of Art

Served as president of the board of trustees.

2006

Founded Glenstone Museum

Co-founded the museum with his wife, Emily Wei Rales.

1995

Co-founded Colfax Corporation

Co-founded the industrial technology company.

1984

Co-founded Danaher Corporation

Transformed Equity Group Holdings into Danaher Corporation.

1979

Co-founded Equity Group Holdings

Founded with brother Steven Rales, which later became Danaher Corporation.

Philanthropic Impact

Arts$1.9B

Glenstone Foundation

Donated to the foundation, which operates the Glenstone Museum

Education and Arts$2B+

Giving Pledge

Committed to donate majority of wealth to charity

Wealth Trajectory