Bryan Johnson is a fintech and longevity founder who founded Braintree, OS Fund, Kernel, and Blueprint. Bryan Johnson's Twitter Score is 719 out of 1000 (an Excellent rating) as of October 2026, ranking #105 (top 0.1%) among 493,668 tracked accounts.
Bryan Johnson founded Braintree, a payments company that raised a $34 million Series A from Accel Partners in 2011 and was sold to PayPal for approximately $800 million in cash in 2013. Following that exit, he founded OS Fund in 2014 with a personal investment of $100 million, directing capital toward genomics, synthetic biology, computationally derived therapeutics, advanced materials, and diagnostics.
Bryan Johnson has maintained a public interest in Bitcoin, stating he plans to be alive for Bitcoin's final halving in 2140, a claim consistent with his broader focus on longevity and human lifespan extension through his Blueprint protocol and Kernel, a neurotechnology company. PayPal supported Bitcoin on the Braintree payments platform in 2014, with Coinbase facilitating the integration. Bryan Johnson is affiliated with Don't Die, a community centered on his longevity philosophy.
Bryan Johnson's portfolio includes Stable.
Who follows Bryan Johnson on X?
The accounts that follow Bryan Johnson include 3,285 founders, 860 angel investors, 1,240 influencers and 46 VCs. Among them are Chris Dixon, Toly, Balaji, CZ BNB, Nikita Bier and jesse.base.eth. Bryan Johnson has been mentioned by 1,149 accounts a total of 2,459 times. Bryan Johnson has published 16,014 posts since joining in 2008.