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Tess Van Stekelenburg

Co-founder and director at Valthos.

Director
Updated Nov 10, 2026·Latest SEC filing Apr 1, 2026·Suggest an edit

About Tess Van Stekelenburg

Tess Van Stekelenburg is a co-founder and director at Valthos.

Experience

This experience comes from Tess Van Stekelenburg's profile and from SEC filings. For roles taken from filings, the years are when the filings name Tess Van Stekelenburg in the role, so the role may have started earlier or lasted longer.

Valthos Inc. Current
Co-Founder & President (2025 – Present)
Director
2025 – Present · New York, NY
Valthos builds AI tools for government and life sciences teams to address biological threats.
Lux Capital Current
Partner
2023 – Present
Hummingbird Ventures
Investment Team
2020 – 2022
University of Oxford
Computational Neuroscience Research
2019 – 2020
UCL
Research Engineer, Gatsby Computational Neuroscience Unit
2016 – 2018

Key Colleagues at Startups

The people Tess Van Stekelenburg works with at each company, as listed on that company's latest Form D.

Valthos Inc. · Form D, Apr 1, 2026
KM
Kathleen McMahon
Chief Executive Officer and director

Sources

  1. SECValthos Inc. Form D, filed Apr 1, 2026