New pledge signatories announced today include Joyce and Bill Cummings, Ray and Barbara Dalio, John Paul DeJoria, Phillip and Patricia Frost, Harold and Sue Ann Hamm, Vinod and Neeru Khosla, Rich and Nancy Kinder, Edward W. and Deedie Potter Rose, Lynn Schusterman, and Annette and Harold Simmons.
In March, Simmons and his wife, Annette, pledged to give half of their fortune to charity, joining the program started by Bill and Melinda Gates and Warren Buffett.