Billionaire Profile
Julia Koch & family
Global Rank
#21

Image: Public domain | via Wikimedia Commons

Julia Koch & family

CEO, Koch, Inc.
US
Real-Time Net Worth
$74.2B
As of December 2025
Age
63
Source
Koch, Inc.
Industry
diversified
Citizenship
US

Biography

Julia Koch is an American socialite, philanthropist, and one of the wealthiest women globally, with an estimated net worth of $74.2 billion. She inherited her fortune from her late husband, David Koch, upon his death in 2019, which included a 42% stake in Koch Industries. Koch is the president of the David H. Koch Foundation, actively involved in philanthropy, supporting various causes related to science, medical research, education, and the arts. She serves on the boards of Koch Industries, Memorial Sloan Kettering Cancer Center, The Metropolitan Museum of Art, and Venetian Heritage. Koch's career began in the fashion industry before she married David Koch and became a prominent figure in New York society. She is known for her discretion and commitment to philanthropic endeavors, striving to leave a lasting impact on society.

Wealth Over Time

In-Depth Profile

Early Life

Julia Margaret Flesher Koch was born on April 12, 1962, in Des Moines, Iowa. Her parents owned a furniture store and later a clothing store in Conway, Arkansas, where she spent her childhood. She graduated from the University of Central Arkansas.

Rise to Success

In 1984, Julia moved to New York City and pursued a career in the fashion industry, working as an assistant to designer Adolfo, styling high-profile clients including Nancy Reagan. In 1996, she married David Koch. She made her New York society debut at the Met Gala in December 1997. Upon David Koch's death in 2019, she inherited a 42% stake in Koch Industries.

Key Business Strategies

Julia is a board member of Koch Industries. After inheriting her stake in Koch Industries, she has focused on preserving the family's legacy and wealth while maintaining a relatively private lifestyle. In June 2024, Koch and her children paid nearly $700 million for 15% of BSE Global, which owns the NBA's Brooklyn Nets and WNBA's New York Liberty.

Philanthropy

Julia Koch is the president of the David H. Koch Foundation. She supports various causes, including education, medical research, and cultural institutions. She has made significant donations to the Lincoln Center, the Metropolitan Museum of Art, the Smithsonian Museum of Natural History, Memorial Sloan Kettering Cancer Center, NYU Langone, and the Lucile Packard Children's Hospital at Stanford University. In February 2024, she gifted $75 million to NYU Langone for the Julia Koch Family Ambulatory Care Center.

Career Milestones

1984

Moved to New York City

Began working in the fashion industry as an assistant to fashion designer Adolfo.

1996

Married David Koch

Married David Koch, aligning with one of America's most influential industrial families.

1997

Made New York society debut at the Met Gala

Co-chaired the Met Gala with Anna Wintour and Patrick McCarthy.

2019

Inherited stake in Koch Industries

Inherited a 42% stake in Koch Industries following her husband's death.

2024

Invested in BSE Global

Acquired a 15% stake in BSE Global, the parent company of the Brooklyn Nets, New York Liberty, and Barclays Center, for an estimated $688 million.

Philanthropy & Social Impact

Philanthropy

David H. Koch Foundation

$200M+

Supports science and medical research, education, the arts, and public policy.

Healthcare

NYU Langone

$75M

Donated to fund the Julia Koch Family Ambulatory Care Center.

Healthcare

Lucile Packard Children's Hospital Stanford

$10M

Established the David & Julia Koch research clinic for allergy and asthma.

Healthcare

Mount Sinai Medical Center

$10M

Created the David H. and Julia Koch Research Program in Food Allergy Therapeutics.

Business Philosophy & Leadership

Notable Quotes

"“If you don't like your story you have the power to rewrite it.”"