CNN's Tim Lister, Paul Cruickshank, Deborah Feyerick, Pamela Brown, Julian Cummings, Barbara Starr, Ann O'Neill, Melissa Gray, Susan Candiotti, Tom Watkins, Jake Tapper, Shannon Travis and Drew Griffin contributed to this report.

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Rose, Nannice Rose, Nola Royster, Barbara Anne Rudolph, Billie Rutherford, Skip Rutherford, Deborah Sale, Mary Ann Salmon, Carolyn Schauflee, Louie Schauflee, Marty Schauflee, Michael Schauflee, Charlotte Schexnayder, Melvin Schexnayder, Mary Schroeder, Robert Schroeder, Dr. Joanna Seibert, Lottie Shackleford, Erin Shockley, Leslie Singer, Noah Singer, Donald Sjostrand, Rev.

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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.

FORBES: Ten More Tycoons Sign Buffett And Gates Giving Pledge: Dalio, Kinder, DeJoria