Estimated net worth: $3.89 billion
Amount pledged: $1 billion
The Twitter CEO announced on April 7 he was donating $1 billion in equity from his digital payments company Square to a relief fund called "Start Small." Dorsey said it will initially focus on coronavirus relief, but will in time move towards funding girls' health and education.
Dorsey published a link to flow tracker with the fund. At time of writing, it shows $100,000 is earmarked for America's Food Fund.
According to Dorsey, the fund constitutes roughly 28% of his net worth.
San Francisco Chronicle reporter Owen Thomas wrote this isn't the first incarnation of the Start Small fund. He points out that Dorsey made a promise in a 2015 SEC filing for Square that he would donate millions of shares into the Small Start fund, but that as of 2018 they had not materialized in the public record.
Thomas also points out that, as an LLC fund, the money is not yet committed, and can return to Dorsey at any point.