$43.0B
Since you arrived
$0.00
Per second
$68.00
Per minute
$4,091
Per hour
$245,457
Per day
$5,890,959
Time to earn each amount through passive income at 5% annual return on $43.0B net worth.
John Mars and his siblings Jacqueline and Forrest Jr. (d. 2016) inherited stakes in the candy firm Mars when their father died in 1999.
He and Jacqueline each own an estimated one-third of the company. His late brother Forrest Jr.'s four daughters are believed to own the rest.
The $65 billion (sales) business was founded by John's grandfather, Frank, in 1911.
Mars acquired snack company Kellavova in December 2025 for $35.9 billion including debt.
John Mars and his wife, Adrienne, are noted supporters of the Smithsonian Institution in Washington, D.C.
The company's first big hit was the Milky Way candy bar, introduced in 1923.