Pictured clockwise from top left: Drew Houston, Lisa Sonsini, Jim McKelvey, Bob Lurie, Glen Tullman, Noubar Afeyan, Craig Newmark, Cameron Adams. Photos:: Big Event Media, Craig Barritt, Ben Gabbe/Association of Magazine Media, Carlos Avila Gonzalez/The San Francisco Chronicle, Kimberly White/TechCrunch, Alex Kent, Arturo Holmes, Katie Jones/Variety for Getty Images

The founders of Moderna, Canva and Craigslist are among a new wave of ultra-wealthy figures pledging to give away the bulk of their fortunes. The Giving Pledge, a philanthropic campaign that just marked its 15th anniversary, has long attracted billionaires inclined toward large-scale giving, and this year was no exception. In 2025, 14 new signatories joined the pledge, bringing its total membership to nearly 260 and ushering in a new cohort of influential figures shaping global philanthropy.