4. Judy Faulkner
Age: 75 Residence: Mount Horeb, Wisconsin
Self-made Score: 8
Faulkner is CEO and founder of Epic, a $2.9 billion (revenue) medical software company that is used to store the records of 250 million patients. A computer programmer, Faulkner founded Epic in 1979 in the basement of an apartment building in Madison. She’s run the company ever since and never taken outside funding. In 2015, Faulkner signed the Giving Pledge and said she will eventually donate most of her stake to a charitable foundation.