Bill Koch (businessman)

William Ingraham Koch (/ˈkoʊk/; born May 3, 1940) is an American billionaire businessman, sailor, and collector. His boat was the winner of the America's Cup in 1992. Koch's net worth was at $1.8 billion in 2019.^[1]

Bill Koch
Koch in 1992
Born	William Ingraham Koch (1940-05-03) May 3, 1940 (age 85) Wichita, Kansas, U.S.
Education	Massachusetts Institute of Technology (SB, SM, PhD)
Occupation(s)	Businessman, sailor, and collector
Spouse(s)	Joan Granlund (m. 1994; div.) Angela Browder Gauntt ​ ​ (m. 1996; div. 2000)​ Bridget Rooney ​ ​ (m. 2005)​
Children	5
Parents	Fred C. Koch Mary Robinson
Relatives	Frederick R. Koch (brother) Charles Koch (brother) David Koch (twin brother)

David Koch (1940−2019) was his twin brother.^[2] His other brothers are Frederick R. Koch (1933−2020) and Charles Koch (born 1935).