[7] CBS News reported that Koch Industries settled for $25 million, and Bill received one-third of the settlement for bringing the suit.

[8] After leaving Koch Industries, he became the founder and president of the Oxbow Group, an energy development holding company based in West Palm Beach, Florida.

[10] In October 2016, Charles Middleton brought an IRS whistleblower complaint against Oxbow Carbon LLC for avoidance of taxes involving profits from selling petroleum coke, a residue from oil refining.

[13][14] Koch won the America's Cup in 1992 with the yacht America3, defeating the Italian challenger Il Moro di Venezia.

Koch reportedly spent around $65 million on his effort and though an amateur, sailed on the crew himself, assisted by veteran sailors like Buddy Melges.

This time the crew consisted entirely of women except for tactician David Dellenbaugh, on a yacht named Mighty Mary.

Koch filed the suit against Renee Angove in 2009 [20] and was reported to have reached a settlement for $3 million in July 2014.

[9] A 2005 show at the Museum of Fine Arts in Boston featured his collections, including the America 3 and the yacht it defeated, Il Moro di Venezia.

Koch had helped finance the show, including paying the cost to move the boats from Rhode Island.

[25] In June 2011, he purchased a 130-year-old photo of the legendary outlaw Billy the Kid for the amount of $2.3 million at a Denver auction.

[29] Koch gave $2 million to Restore Our Future, a PAC created to support 2012 Republican Party Presidential candidate Mitt Romney.

[32] In 1995, he filed a lawsuit against his former lover, Catherine de Castelbajac, to evict her from his $2.5 million condominium at the Four Seasons Hotel in Boston.