Sue Gross

The ex-wife of PIMCO cofounder and billionaire Bill Gross — who herself is worth an estimated $1.6 billion, per Forbes Her namesake foundation focuses on healthcare and education, among other causes. Last month (January 2022), the foundation donated $3 million to the University of California, Irvine to benefit the Sue & Bill Gross School of Nursing. Between the two of them, formerly married couple Bill and Sue Gross have donated over $750 million to charity.