Active house
Koch family
Koch, Inc. · United States · founded 1940
One of the largest private industrial groups in the United States, held almost entirely by two branches of the family.
Family fortune
$149B
Bloomberg Family Index, as of 2025-12-31
Generations
3
Documented members
4
Industries
Energy, Chemicals, Industrials
Founders, principals and heirs
Fred C. Koch
Founder · generation 1 · 1900–1967
Co-founded the refining engineering firm that became Koch Industries.
Charles Koch
Principal · generation 2 · 1935–
Chairman and CEO since 1967.
David Koch
Principal · generation 2 · 1940–2019
Executive vice president; major philanthropist.
Chase Koch
Heir · generation 3 · 1977–
Koch Disruptive Technologies.
Legacy
A 1980s buyout consolidated ownership in Charles and David Koch's branches.
Evidentiary standard
Family fortunes are only recorded where a named wealth desk publishes a standing family-level estimate; the source and valuation date are shown with the figure. Houses whose assets are held through charitable trusts, foundations, or sovereign vehicles carry no figure, because no verifiable personal total exists. Lineage entries are limited to publicly documented family members.