Mr. Mann pledged $70-million to the Nevada Community Foundation.
By Maria Di Mento
Senior Editor
No. 40: Arthur and Rebecca Samberg
The Sambergs pledged $25-million to Columbia Business School for its new Manhattanville campus.
By Maria Di Mento
Senior Editor
No. 1: Mark Zuckerberg and Priscilla Chan
The couple gave 18 million shares of Facebook, valued at about $992.2-million, to the Silicon Valley Community Foundation.
By Caroline Bermudez
Contributor
Dr. Ridgway, who was 92 when he died last year, left $39-million (the bulk of his estate) to endow the University of Evansville.
By Maria Di Mento
Senior Editor
No. 39: Richard and Susan Rogel
The couple pledged $50.1 million to the University of Michigan at Ann Arbor.
By Maria Di Mento
Senior Editor
No. 32: Harold Harrison (bequest)
Dr. Harrison left about $66-million to the Medical College of Georgia Foundation at Georgia Regents University.
By Maria Di Mento
Senior Editor
The Broads gave $157-million to their Broad Foundations last year.
By Maria Di Mento
Senior Editor
Mr. Ellison gave a total of $72.2-million to the Lawrence Ellison Foundation.
By Maria Di Mento
Senior Editor
No. 2: George Mitchell (bequest)
Mr. Mitchell left an estimated $750-million to the Cynthia and George Mitchell Foundation, which he and his late wife established in 1978.
By Maria Di Mento
Senior Editor
No. 37: Dale and Sarah Ann Fowler
The couple pledged $55-million to Mr. Fowler’s alma mater, Chapman University.
By Maria Di Mento
Senior Editor
No. 31: Stephen and Nancy Grand
The Grands pledged $50-million last year to the American Committee for the Weizmann Institute of Science.
By Maria Di Mento
Senior Editor
No. 45: Richard Herman (bequest)
Mr. Herman, who was 100 when he died last year, left the bulk of his estate to two Washington organizations.
By Maria Di Mento
Senior Editor
No. 46: Raymond and Kathryn Harbert
Mr. and Ms. Harbert pledged $40-million to Auburn University’s College of Business.
By Maria Di Mento
Senior Editor
No. 10: Jeffrey Carlton (bequest)
Mr. Carlton left about $212-million to a trust that will eventually become the Jeffrey Carlton Charitable Foundation.
By Maria Di Mento
Senior Editor
Mr. Clark pledged $60-million to Stanford University’s James H. Clark Center for Biomedical Engineering and Sciences, which he helped the university found in 1999 by providing $90-million.
By Maria Di Mento
Senior Editor
Ms. Hill pledged $50-million over five years to the University of Texas M.D. Anderson Cancer Center.
By Caroline Bermudez
Contributor