Brian Acton Net Worth

Brian Acton has an estimated net worth of $3.6 billion, according to Forbes Real-Time Billionaires, Brian Acton profile (figures as of October 20, 2026).

Brian Acton is an American computer programmer and business executive best known for helping build WhatsApp. He worked at Yahoo after earlier roles at Rockwell International, Apple, and Adobe Systems. His partnership with Jan Koum started at Yahoo, where they met while working at the company. After leaving Yahoo in 2007, they went on to create WhatsApp, a messaging app that became one of the biggest mobile services in the world.

Acton became wealthy through WhatsApp. He and Koum cofounded the app in 2007, and Facebook bought it in 2014 for $22 billion in cash and stock. Forbes says Acton received about $3 billion for his stake. He left WhatsApp at the end of 2017. In 2018, he co-founded Signal Technology Foundation with Moxie Marlinspike and committed $50 million to support private communication through Signal.

How Brian Acton built his wealth

Most of Brian Acton’s fortune comes from WhatsApp. After leaving Yahoo, he teamed up with Jan Koum to build the messaging app. The service grew into a huge global platform, with over 3 billion users in 180 countries. Facebook acquired WhatsApp in 2014 for $22 billion in cash and stock, and Forbes says Acton received about $3 billion for his ownership stake in the company.

Acton’s later work has focused on Signal rather than another large sale. In 2018, he co-founded the Signal Technology Foundation with Moxie Marlinspike and committed $50 million to the nonprofit behind the Signal app. He also serves as executive chairperson of the foundation and interim chief executive officer of Signal Messenger LLC. Forbes also notes that Acton and his wife, Tegan, founded 3 other philanthropic entities and hold over $1 billion in charitable vehicles.

Forbes net worth and money picture

Forbes currently estimates Brian Acton’s net worth at $3.6 billion on its real-time billionaires tracker as of October 20, 2026. Forbes places him in the technology industry and describes him as self-made. His wealth is closely tied to WhatsApp, the company that made him famous and produced his biggest payday. He left the company in 2017, but the Facebook deal remains the main reason for his fortune.

His Forbes estimates moved around over time. Forbes put him at $2.5 billion in 2020, then $2.6 billion in 2021, $2.8 billion in 2022, $2.4 billion in 2023, $3.1 billion in 2024, and $3.4 billion in 2025. That path shows a dip and then a rebound before the current 2026 figure. Alongside his business career, Acton has directed major sums into philanthropy and privacy-focused work through Signal.