Bloomberg Billionaires Index

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# 12 Julia Flesher Koch $57.9B

Random fact: Father owned an antique store in Arkansas.


Flesher Koch is the widow of David Koch, a former executive and co-owner of Koch Industries, the second-largest closely held company in the U.S. by revenue. The Wichita, Kansas-based conglomerate operates in oil refining, pipelines, commodities trading, ranching and paper pulp, and has annual revenue of about $110 billion.

As of :
Last change -$369M ( -0.6%)
YTD change -$4.18B ( -6.7%)
Industry Industrial
Biggest asset Koch Industries cash & short term assets
Citizenship United States
Age 57
Wealth Inherited
View net worth over:   Max 1 year 1 quarter 1 month 1 week

Relative Value

Julia Flesher Koch's net worth of $57.9B can buy ...

troy ounces of gold
barrels of crude oil

... and is equivalent to ...

of the GDP of the United States
of the total wealth of the 500 richest people in the world
of the top 100 U.S. college endowments
of the top 200 U.S. executives’ total awarded compensation
of U.S. existing home sales
times the median U.S. household income

Latest News

Net Worth Summary

Private asset
Public asset
Misc. liabilities
Confidence rating:

Flesher Koch's fortune is derived from the inheritance of her late husband's 42 percent stake in Koch Industries, a closely held industrial conglomerate. Koch Industries is the second-largest closely held company in the U.S. and has annual revenues of about $110 billion, according to its website.

David Koch died in August 2019. Flesher Koch & family are credited in this analysis with all of the shares previously held by David Koch. "David’s shares remain with his family," Koch spokeswoman Christin Fernandez said in an email on Aug. 23, 2019.

Revenue for Flint Hills Resources and its chemicals business, as well as Koch Pipelines and Koch Fertilizer, is calculated to be $39 billion by comparing their reported production capacities with select industry peers.

Based on information from credit reports and people familiar, paper and pulp producer Georgia-Pacific had $21 billion of revenue, and polymer and fiber producer Invista had revenue of $4 billion. Electronic components manufacturer Molex had revenue of $5.5 billion.

Infor Global Solutions, an enterprise software company, had revenue of $3.1 billion and is 45 percent owned by Koch.

Of the remaining group revenue -- $33.9 billion -- 90 percent is attributed to Koch's commodity trading business. The remaining $3.6 billion is attributed to Koch's other businesses and is included at a price-to-sales multiple of one. Valuation details for the units analyzed individually can be found in the asset notes for each.

In addition, $30.4 billion in short term assets is held at the Koch Industries parent, based on Moody's reports stating that the company has a zero net debt position.

Koch's cash investments were included at $2 billion in 2015, based on a March 2016 Bloomberg report and applied to a generalized asset allocation since then.


Birthdate: 1/1/1963
Family: Widowed, 3 children
Education: University of Central Arkansas

Julia Flesher was born in Indianola, Iowa in 1963. Her family owned a furniture store on Highway 92, according to a 1998 New York Times report. She moved to Arkansas eight years later when her parents opened a clothes store in Conway, north of Little Rock.

She attended the University of Central Arkansas before taking a job as an assistant to fashion designer Adolfo Sardina.

She met David Koch on a blind date in January 1991. The pair married in 1996 and had three children. David Koch died on Aug. 23, 2019.

  • 1963 Julia Flesher is born in Iowa.
  • 1991 Goes on a blind date with David Koch.
  • 1996 Marries David Koch.
  • 2019 David Koch dies.