Julia Koch & Family

 

Overview

Julia Koch is an American philanthropist, socialite, and businesswoman best known as the widow of David Koch. Following David Koch's death in 2019, Julia and her three children inherited a 42% stake in Koch, Inc. (formerly Koch Industries), one of the largest privately held companies in the United States.

As of 2026, Forbes estimates Julia Koch & family's net worth at approximately $81.2 billion, placing them among the wealthiest families in the world.

Personal Information

Full Name: Julia Margaret Flesher Koch
Born: April 12, 1962
Birthplace: Des Moines, Iowa, USA
Education: University of Central Arkansas
Occupation: Philanthropist, businesswoman, investor

Before marrying David Koch, Julia worked in fashion and served as an assistant to designer Adolfo, working with high-profile clients including former First Lady Nancy Reagan.

Family

Julia and David Koch had three children:

• David Koch Jr.
• Mary Julia Koch
• John Koch

The family inherited David Koch's ownership stake after his death in 2019.

Source of Wealth

The family's fortune comes primarily from Koch, Inc., a conglomerate with interests in:

• Energy
• Chemicals
• Manufacturing
• Trading
• Technology
• Consumer products
• Paper and packaging

The company traces its origins to founder Fred C. Koch and was later expanded by his sons, especially Charles Koch and David Koch.

Philanthropy

Julia Koch serves as:

• President of the David H. Koch Foundation
• Founder and Chair of the Julia Koch Family Foundation
• Board member of several major institutions

The family's charitable giving has supported:

• Medical research
• Cancer treatment
• Education
• Arts and culture

Beneficiaries have included:

• Memorial Sloan Kettering Cancer Center
• The Metropolitan Museum of Art
• NewYork-Presbyterian Hospital
• Smithsonian Institution

The David H. Koch Foundation reports nearly $200 million in grants supporting science, medicine, education, and the arts.

Sports Investments

In recent years, Julia Koch and her family have expanded into professional sports ownership.

Brooklyn Nets & New York Liberty

In 2024, the family acquired a 15% stake in BSE Global, the parent company of:

• Brooklyn Nets
• New York Liberty
• Barclays Center

New York Giants

In 2025, the family purchased a 10% stake in the NFL's New York Giants, in a deal valuing the franchise at roughly $10 billion. The transaction was later approved by NFL owners.

Interesting Facts

• Julia Koch became one of the world's richest women after inheriting David Koch's stake in 2019.
• She generally maintains a lower public profile than many billionaires.
• She serves on the board of Koch, Inc. and several major cultural and medical institutions.
• The Koch family remains one of the most influential business dynasties in America.

Quick Snapshot

Category	Details
Net Worth (2026)	~$81.2 billion
Wealth Source	Koch, Inc.
Marital Status	Widowed (David Koch)
Children	3
Major Interests	Industry, philanthropy, sports investments
Residence	New York, USA
Global Wealth Rank	Among the world's richest families