Born On Your Day
Hansjörg Wyss
Oceana, CC BY 3.0, via Wikimedia Commons

billionaireentrepreneurTop tier

Hansjörg Wyss

Entrepreneur · born September 19, 1935

$4.8Bolder estimate, as of 2025 · Forbes

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About

Johann Georg "Hansjörg" Wyss is a Swiss billionaire businessman and donor to politically liberal and environmental causes in the United States. He is the founder and former president and chairman of Synthes, a medical device manufacturer.

Adapted from Wikipedia (CC BY-SA 4.0).

Reported wealth

Each figure is a dated estimate from the publisher shown; wealth changes, and nothing here is live.

As ofEstimateSource
2025$4.8BForbes · current

Sources

Every fact on this page traces to one of these.

Sources (3)

Also born on September 19

Hansjörg's most notable birthday twins

Uğur Şahin
billionaire

Uğur Şahin

Entrepreneur · BioNTech · pharmaceuticals

1965 · Turkey

$7.2Bolder estimate, as of February 2022 · Bloomberg

Uğur Şahin is a German medical researcher, entrepreneur, and businessman. He is the co-founder and CEO of BioNTech, which developed the world’s first mRNA-based vaccine against COVID-19.

BioNTech, CC BY-SA 4.0, via Wikimedia Commons

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Sources (3)
Palmer Luckey
billionaire

Palmer Luckey

Entrepreneur

1992 · United States

$6Breported estimate as of September 2026 · Forbes

Palmer Freeman Luckey is an American entrepreneur and co-founder of defense technology company Anduril Industries. He was the founder of Oculus VR and designer of the Oculus Rift, a virtual reality headset that is widely credited with reviving the virtual reality industry.

Xuthoria, CC BY-SA 4.0, via Wikimedia Commons

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Sources (3)
Jimmy Fallon
actor

Jimmy Fallon

Actor

1974 · United States

James Thomas Fallon is an American comedian, television host, actor, singer, writer, and producer, best known for his work in television.

Montclair Film Festival, CC BY 2.0, via Wikimedia Commons

Sources (2)
Cass Elliot
actor

Cass Elliot

Actor

1941–1974 · United States

Ellen Naomi Cohen, known professionally by the stage name Cass Elliot, was an American singer-songwriter, actress, comedian, and television personality.

Unknown authorUnknown author, Public domain, via Wikimedia Commons

Sources (2)