Pledge Signatories


  • Bill Ackman
  • Tegan and Brian Acton
  • Margaret and Sylvan Adams
  • Anil Agarwal
  • Leonard H. Ainsworth
  • Paul G. Allen (d. 2018)
  • HRH Prince Alwaleed Bin Talal Bin Abdulaziz AlSaud
  • Brian Armstrong
  • Sue Ann Arnall
  • Laura and John Arnold
  • Marcel Arsenault and Cynda Collins Arsenault
  • Lord Ashcroft KCMG PC
  • Jon and Helaine Ayers
  • Stewart and Sandy Bainum
  • Sarah and Rich Barton
  • Lynne and Marc Benioff
  • Nicolas Berggruen
  • Manoj Bhargava
  • Aneel and Allison Bhusri
  • Sheikh Dr. Mohammed Bin Musallam Bin Ham Al-Ameri
  • Steve Bing (d. 2020)
  • Sara Blakely
  • Arthur M. Blank
  • Nathan and Elizabeth Blecharczyk
  • Michael R. Bloomberg
  • David G. Booth
  • Richard and Joan Branson
  • Eli (d. 2021) and Edythe Broad

  • Charles R. Bronfman
  • Edgar M. Bronfman (d. 2013)
  • Warren Buffett
  • Charles Butt
  • Garrett Camp
  • Steve and Jean Case
  • John Caudwell
  • Brian Chesky
  • Ron and Gayle Conway
  • Scott Cook and Signe Ostby
  • Lee and Toby Cooperman
  • Joe and Kelly Craft
  • Joyce and Bill Cummings
  • Ray and Barbara Dalio
  • Jack and Laura Dangermond
  • John Paul DeJoria
  • Ben Delo
  • Mohammed Dewji
  • Barry Diller and Diane von Furstenberg
  • Ann and John Doerr
  • Dagmar Dolby
  • DONG Fangjun
  • Glenn and Eva Dubin
  • Anne Grete Eidsvig and Kjell Inge Røkke
  • Ric and Brenda Elias
  • Larry Ellison
  • Henry Engelhardt and Diane Briere de l'Isle-Engelhardt
  • Candy and Charlie Ergen
  • Judy Faulkner
  • Charles F. Feeney
  • Andrew and Nicola Forrest
  • Ted Forstmann (d. 2011)
  • Melinda French Gates
  • Phillip and Patricia Frost
  • Mario and Regina Gabelli
  • Mala Gaonkar
  • Bill Gates
  • Joe Gebbia
  • Dan and Jennifer Gilbert
  • Dame Ann Gloag
  • Dave Goldberg (d. 2015) and Sheryl Sandberg
  • Jeremy and Hanne Grantham
  • David and Barbara Green
  • Jeff T. Green
  • Jeff and Mei Sze Greene
  • Harold Grinspoon and Diane Troderman
  • William Gross
  • Gordon and Llura (d. 2020) Gund
  • Sir Stelios Haji-Ioannou
  • Harold Hamm
  • Nick and Leslie Hanauer
  • David and Claudia Harding
  • Gordon V. Hartman
  • Reed Hastings and Patty Quillin
  • Lyda Hill
  • Barron Hilton (d. 2019)
  • Orion and Jackie Hindawi
  • Reid Hoffman and Michelle Yee
  • Christopher Hohn
  • Elie and Susy Horn
  • Sir Tom and Lady Marion Hunter
  • Jon (d. 2018) and Karen Huntsman
  • Yan Huo
  • Dr Mo Ibrahim
  • Carl Icahn
  • Jared and Monica Isaacman
  • Joan and Irwin Jacobs
  • Badr Jafar and Razan Al Mubarak
  • Sonia and Paul Tudor Jones
  • John W. Jordan II "Jay"
  • Ryan D. “Jume” Jumonville
  • George B. Kaiser
  • Brad Keywell
  • Vinod and Neeru Khosla
  • Bongjin Kim and Bomi Sul
  • Miseon Hyeong and Beom-su Kim
  • Sidney Kimmel
  • Rich and Nancy Kinder
  • Robert E. “Bob” and Dorothy “Dottie” King
  • Beth and Seth Klarman
  • Robert and Arlene Kogod
  • Elaine and Ken Langone
  • Erica and Jeff Lawson
  • Liz and Eric Lefkofsky
  • Francine A. LeFrak and Rick Friedberg
  • Gerry (d. 2018) and Marguerite Lenfest
  • Peter B. Lewis (d. 2013)
  • Daoming Liu
  • Iza and Samo Login
  • Lorry I. Lokey
  • George Lucas and Mellody Hobson
  • Richard and Melanie Lundquist
  • Duncan and Nancy MacMillan
  • Alfred E. Mann (d. 2016)
  • Joe and Rika Mansueto
  • Bernie and Billi Marcus
  • Richard Edwin and Nancy Peery Marriott
  • Strive and Tsitsi Masiyiwa
  • Kiran Mazumdar-Shaw
  • John and Marcy McCall MacBain
  • Craig and Susan McCaw
  • Red and Charline (d. 2019) McCombs
  • PNC and Sobha Menon
  • Dean and Marianne Metropoulos
  • Alya and Gary K. Michelson, M.D.
  • Michael and Lori Milken
  • Yuri and Julia Milner
  • George P. Mitchell (d. 2013)
  • Thomas S. Monaghan
  • Gordon and Betty Moore
  • Tashia and John Morgridge
  • Michael Moritz and Harriet Heyman
  • Dustin Moskovitz and Cari Tuna
  • Patrice and Precious Motsepe
  • Elon Musk
  • Arif Naqvi
  • Jonathan M. Nelson
  • José Ferreira Neves
  • Rohini and Nandan Nilekani
  • Gensheng Niu
  • Pierre and Pam Omidyar
  • Natalie and Paul Orfalea
  • Bernard and Barbro Osher
  • Bob and Renee Parsons
  • Jim Pattison
  • Ronald O. Perelman
  • Jorge M. and Darlene Perez
  • Melanie Perkins and Cliff Obrecht
  • Peter G. Peterson (d. 2018)
  • T. Boone Pickens (d. 2019)
  • Victor Pinchuk
  • Hasso Plattner
  • Vladimir Potanin
  • Azim Premji
  • Ernest and Evelyn Rady
  • Terry and Susan Ragon
  • Emily and Mitchell Rales
  • Chad Richison
  • Julian H. Robertson, Jr.
  • David Rockefeller (d. 2017)
  • Edward W. (d. 2016) and Deedie Potter Rose
  • Stephen M. Ross
  • Jeff and Marieke Rothschild
  • David M. Rubenstein
  • Chris and Crystal Sacca
  • David Sainsbury
  • John and Ginger Sall
  • Henry and Susan Samueli
  • Herb (d. 2019) and Marion (d. 2012) Sandler
  • Denny Sanford
  • Vicki Sant (d. 2018)
  • Jack and Renate Schuler
  • Lynn Schusterman
  • Steven Schuurman
  • Stephen A. Schwarzman
  • Paul and Jennifer Sciarra
  • MacKenzie Scott and Dan Jewett
  • Ruth and Bill Scott
  • Walter Scott, Jr. (d. 2021)
  • Tom and Cindy Secunda
  • Dr. B.R. Shetty and Dr. C.R. Shetty
  • Ben and Divya Silbermann
  • Craig Silverstein and Mary Obelnicki
  • Annette and Harold (d. 2013) Simmons
  • Jim and Marilyn Simons
  • Liz Simons and Mark Heising
  • Nat Simons and Laura Baxter-Simons
  • Paul E. Singer
  • Jeff Skoll
  • Robert F. Smith
  • John A. and Susan Sobrato
  • John and Timi Sobrato
  • Michele B. Chan and Patrick Soon-Shiong
  • Ted (d. 2016) and Vada (d. 2013) Stanley
  • Mark and Mary Stevens
  • Tom Steyer and Kat Taylor
  • Harry H. Stine
  • Jim (d. 2014) and Virginia Stowers (d. 2021)
  • Dato' Sri DR Tahir
  • Vincent Tan Chee Yioun
  • Nicolai and Katja Tangen
  • Tad and Dianne Taube
  • Robert and Jane Toll
  • Claire (d. 2014) and Leonard Tow
  • Byron and Tina Trott
  • Ted Turner
  • Albert Lee Ueltschi (d. 2012)
  • Hamdi Ulukaya
  • Sunny and Sherly Varkey
  • Shamsheer and Shabeena Vayalil
  • David Vélez and Mariel Reyes
  • Dr. Romesh and Kathleen Wadhwani
  • Jian Wang
  • David and Bonnie Weekley
  • Sanford and Joan Weill
  • Dr. Herbert and Nicole Wertheim
  • Shelby White
  • Simone and Urs Wietlisbach
  • Sir Ian Wood
  • Hansjörg Wyss
  • Patti Bao and Tony Xu
  • Samuel Yin
  • YOU Zhonghui
  • Charles Zegar and Merryl Snow Zegar
  • Mark Zuckerberg and Priscilla Chan