Director · Valthos

Kathleen McMahon

United States3 roles at 1 organization

Co-founder of Valthos and its executive officer per Form D; former head of Palantir's Life Sciences division.

Roles3 at 1 org

ValthosCurrent
- Director · BoardDates not recorded
- Chief Executive Officer · ExecutiveDates not recorded
- Co-founder · FounderDates not recorded

1
Regulatory filingValthos Inc. Form D (accession 0002124500-26-000002)
U.S. Securities and Exchange Commission · Apr 1, 2026 · Supports Person
“Related person: Kathleen McMahon; Relationship: Executive Officer, Director”
2
OtherBlack Flag 100.2
Black Flag · Supports Person
“Kathleen McMahon Co-Founder & CEO”
3
DatabaseKathleen McMahon — LinkedIn professional profile
LinkedIn via Bright Data · Supports Person · professional profile
“{"avatar": "https://media.licdn.com/dms/image/v2/C4D03AQEfQrhzNBmNDw/profile-displayphoto-shrink_200_200/profile-displayphoto-shrink_200_200/0/1598664467808?e=2147483647&v=beta&t=p9dnffa6vSFLnq-G08WpgTZ2e_Fe13-7QcQPwcIHmJU", "current_company": {"company_id": "valthos", "link": "https://www.linkedin.com/company/valthos?trk=public_profile_topcard-current-company", "name": "Valthos"}, "input": {"url": "https://www.linkedin.com/in/kmcmahon320/"}, "name": "Kathleen McMahon"}”

4
Regulatory filingForm D: Valthos Inc.
SEC EDGAR · Apr 1, 2026 · Supports Role
“Related persons: Kathleen McMahon (Executive Officer, Director); Tess Van Stekelenburg (Director); signed by Kathleen McMahon, Chief Executive Officer”
5
CompanyValthos Raises $30M from OpenAI, Lux Capital, Founders Fund to Build Next-Generation Biodefense
PR Newswire · Oct 29, 2025 · Supports Person, Role
“Founded by Tess van Stekelenburg, partner at Lux Capital, and Kathleen McMahon, former head of Palantir's Life Sciences division”

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