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Founded by Howard Hughes in 1972.1
Private company
Umbrella company for the business interests of Howard Hughes after 1972
Summa Corporation was a holding company for the business interests of Howard Hughes after he sold the tool division of Hughes Tool Company in 1972. Its holdings included casino hotels, aviation businesses, and television channels.2 Wikipedia text CC BY-SA 4.0
Last updated Oct 21, 2026.
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Summa Corporation was a holding company for the business interests of Howard Hughes after he sold the tool division of Hughes Tool Company in 1972. Its holdings included casino hotels, aviation businesses, and television channels.2
Founded by Howard Hughes in 1972.1
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From Wikidata.1
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