Altos Labs
Top 100
Illustrative curve — no price history on file for this company.
Funding
Raised a $3B round on Jan 19, 2022, bringing the total raised amount to $3B.
Hiring Signal
Based on public job postings · updated monthly
Latest news
Public companies tied to Altos Labs
About Altos Labs
Altos Labs is a biotechnology company pioneering cellular rejuvenation programming, using partial epigenetic reprogramming with Yamanaka factors to restore cell health and resilience and reverse disease, injury, and the disabilities of aging. It launched publicly in January 2022 with about $3 billion in initial funding, one of the largest biotech launches ever, backed by Jeff Bezos and Yuri Milner and led by CEO Hal Barron, with Nobel laureate Shinya Yamanaka as senior scientific advisor. The company remains privately held and its valuation is not officially disclosed; secondary-market estimates put it around $6 billion in early 2026.
Altos Labs on video
Founders
Hal Barron
CEO & Founder
Physician-scientist and former Chief Scientific Officer and President of R&D at GSK; earlier led R&D at Alphabet's Calico and was CMO of Roche/Genentech. He became Altos Labs' founding CEO in 2022.
Hans Bishop
President & Founder
Veteran biotech executive who was founding CEO of Juno Therapeutics and CEO of GRAIL before co-founding Altos Labs as President.
Rick Klausner
Founder & Chief Scientific Advisor
Former director of the U.S. National Cancer Institute and serial biotech founder (Juno, GRAIL, Lyell) who serves as Altos Labs' Chief Scientific Advisor.
Key leaders
Hal V. Barron
CEO, Founder and Board Co-Chair
Former GSK President of R&D and CSO; now CEO and Founder/Board Co‑Chair of Altos Labs.
Richard (Rick) Klausner
Co-Founder, Chief Scientist, Co-Chair
Biotech entrepreneur and former director of the U.S. National Cancer Institute; Founder and Chief Scientist at Altos Labs.
Kevin Sin
Chief Financial and Business Officer
Former GSK and Calico executive; now Chief Financial and Business Officer at Altos Labs.
Joan Mannick, M.D.
SVP, Chief Medical Officer and Head of Product Development
Physician and biotech R&D leader; Chief Medical Officer and Head of Product Development at Altos Labs.
Connie White
Chief People Officer
Human resources leader; serves as Chief People Officer at Altos Labs.
David Williamson
Senior Vice President of Finance and Procurement
Senior finance and operations executive; Senior Vice President, Finance, Procurement, and Global Facilities at Altos Labs.
Recent hires
Bill Teudt
Director, EH&S
Previously at PCI Pharma Services · San Diego, California, United States
Joined Jun 2026
Marjan Kazemi
IT Procurement Manager
Previously at AIT Worldwide Logistics · San Francisco Bay Area
Joined May 2026
Else Villafuerte
Senior Animal Care Technician
Previously at Proclinical Staffing · Livermore, California, United States
Joined Jun 2026