Early Career and Braintree Sale
Bryan Johnson first gained significant wealth by founding Braintree, a mobile payment company based in Chicago. He launched the company in 2007 and built it into a major payment processor that competed with Stripe and Square. In 2013, Braintree acquired Venmo for $26.2 million, a move that later proved highly valuable according to Forbes. The following year, PayPal acquired Braintree and its subsidiaries, including Venmo, for approximately $800 million in cash, making Johnson a multimillionaire at age 36.
The Braintree acquisition gave Johnson the capital and financial freedom to pursue his next ventures in technology and human longevity. He immediately reinvested a large portion of the proceeds into new companies and funds focused on advanced technology and biotechnology. Johnson used this period to establish himself as a serious investor and entrepreneur in the life sciences and artificial intelligence sectors.
Kernel, OS Fund, and Longevity Investments
In 2016, Johnson founded Kernel, a neuroscience and brain-computer interface company aimed at building advanced neural prosthetics as described on the Kernel website. He also launched OS Fund, a venture capital firm that invests in early-stage companies working on fundamental science and technology breakthroughs. OS Fund backed companies in synthetic biology, artificial intelligence, and space exploration, areas Johnson believes will define the next era of human progress.
Johnson committed a significant portion of his personal fortune to extending human lifespan and healthspan. He hired a team of physicians and scientists to run a rigorous longevity program called Blueprint, which involves daily monitoring, advanced blood testing, and experimental treatments. He has publicly shared his body performance data and spends over $2 million per year on his health regimen, drawing attention from both supporters and skeptics in the medical community.
Current Net Worth and Business Activities
Bryan Johnson's current net worth is estimated to be in the hundreds of millions of dollars, derived from the Braintree sale proceeds, Kernel, and OS Fund investments. He continues to lead OS Fund and Kernel while also advising and investing in other technology startups. His wealth is not tied to a single public company, but rather to a diversified portfolio of private technology and biotech companies.
Johnson remains active in public discourse on longevity, AI safety, and the future of human civilization. He frequently publishes detailed updates on his health and business activities, using platforms like YouTube and his personal blog to share data and insights. His approach to building and deploying wealth focuses on high-risk, high-reward ventures in science and technology rather than traditional finance or real estate.