X
Xaira Therapeutics
Core neolabAI-driven drug discovery and development company
Raised, confirmed$1B1 confirmed round
Valuation, confirmed—none disclosed
Valuation, reported—no open report
Founded2024South San Francisco, CA, US
Key facts
| Field | Value | Source · checked |
|---|---|---|
| Classification | Core neolabAI drug-discovery company launched in April 2024 with more than $1B of committed capital led by ARCH Venture Partners and Foresite Capital, co-founded by David Baker | |
| Founded | 2024 | |
| Headquarters | South San Francisco, CA, US | |
| Founders | Marc Tessier-Lavigne, David Baker, Hetu Kamisetty | |
| Website | xaira.com | xaira.com We’re pioneering the discovery and development of life-changing medicines through the transformative power of artificial intelligencechecked 9 Nov 2026 |
| Careers | xaira.com32 open roles on 9 Nov 2026 | xaira.comchecked 9 Nov 2026 |
| Profiles and work | X @Xaira_TheraLinkedIn | How links are checkedchecked 10 Nov 2026 |
Funding rounds
Xaira Therapeutics has raised $1B in rounds confirmed by the company, a regulator or two independent outlets. Status rules: methodology.
| Date | Round | Amount | Valuation | Investors | Status | Source · checked |
|---|---|---|---|---|---|---|
| 23 Apr 2024 | Launch financing (committed capital) | $1B | — | Lead: ARCH Venture Partners, Foresite Capital; F-Prime, NEA, Sequoia, Lux Capital, Lightspeed Venture Partners, Menlo Ventures, Two Sigma Ventures, Parker Institute for Cancer Immunotherapy, Byers Capital, Rsquared, SV Angel | Confirmed | Xaira Therapeutics (press release via BioSpace) Xaira launched with more than $1 billion of committed capital from lead investors ARCH Venture Partners and Foresite Capitalchecked 9 Nov 2026 |
Notes on these rounds
- 23 Apr 2024 Launch financing (committed capital): Announced as more than $1 billion of committed capital at launch; amount shown is the stated floor. Valuation not disclosed.
People
| Name | Role | Before | Now | Source · checked |
|---|---|---|---|---|
| Marc Tessier-LavigneLinkedIn | Chairman & Chief Executive Officer | Stanford University (President), Genentech (Chief Scientific Officer) | Current | biospace.com Xaira is led by founding CEO, Dr. Marc Tessier-Lavigne, former Chief Scientific Officer of Genentech and former President of Rockefeller and Stanford Universities.checked 9 Nov 2026 |
| David BakerLinkedInScholarSite | Co-founder | University of Washington (Professor of Biochemistry; Director, Institute for Protein Design) | Current | biospace.com Xaira was co-founded by Dr. David Baker, Professor of Biochemistry and Director of the Institute for Protein Design at the University of Washington School of Medicine.checked 9 Nov 2026 |
| Hetu Kamisetty | Co-founder & Chief Technology Officer | Meta, Institute for Protein Design | Current | biospace.com co-founder Dr. Hetu Kamisetty, formerly of Meta and the Institute for Protein Designchecked 9 Nov 2026 |
| Ci ChuXLinkedInScholar | Chief Discovery Officer | — | Current | |
| Debbie LawLinkedIn | Chief Scientific Officer | — | Current |
Professional facts from public sources only. How people records are handled.
What it has shipped
| Name | Kind | Date | Open weights | Source · checked |
|---|---|---|---|---|
| X-Cell | model | 21 Jul 2026 | — |
Commonly cited, checked
Figures and statements about Xaira Therapeutics that circulate in lists and summaries, and what the sources support.
| Claim | Finding | Source |
|---|---|---|
| $4B valuation | No source reports a valuation; the April 2024 launch was announced as more than $1B of committed capital with no valuation. | biospace.com Xaira launched with more than $1 billion of committed capital from lead investors ARCH Venture Partners and Foresite Capital |
| Marc Tessier-Lavigne, Bob Nelsen, David Baker, Vik Bajaj | Release names Tessier-Lavigne as founding CEO, David Baker and Hetu Kamisetty as co-founders, and ARCH Venture Partners and Foresite Labs as the incubators; Nelsen and Bajaj are not named as company co-founders. | biospace.com Founded and jointly incubated by ARCH Venture Partners and Foresite Labs, and co-founded by Dr. David Baker |
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