Fundraising Fox

Robert Nelsen

Investor

Co-Founder and Managing Director at ARCH Venture Partners

New York, New York

Writes $50K – $150M checks · typically $75M

FoundedApex Neuro Holdings, Inc.Beam TherapeuticsGRAILInsitroJuno TherapeuticsNeumora Therapeutics

Midas 2025 · #92Midas 2024 · #92Midas 2023 · #99Midas 2022 · #72Midas 2021 · #48Midas 2020 · #28Midas 2019 · #33Midas 2018 · #5Midas 2017 · #16Midas 2016 · #16

About

Robert Nelsen identifies nascent university and national-lab deep-science ideas with a biology and economics background, getting involved extremely early to build companies from the lab bench up with repeat executives.

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Latest on 𝕏

Robert Nelsen @rtnarch

Time to re-think the way we approve drugs for mental health. Depression kills thousands, yet we wont do conditional approval of safe compounds that work but have high placebo effects. But we approve peptides with zero data.

Jul 25, 2026 · ♥ 70 · ⇄ 8

Invests in

AI & Machine LearningBiotechDeep TechHardwareHealthtechMedical Devices

Deals · 15

High Plains Partners, LLCBoard seat

via ARCH Venture Partners · filed Oct 2022 · $230M raise

Apex Neuro Holdings, Inc.Board seat

via ARCH Venture Partners · filed Mar 2022 · $10M raise

Nutcracker TherapeuticsBoard seat

via ARCH Venture Partners · filed Sep 2021 · $200M raise

Medical CreationsBoard seat

via ARCH Venture Partners · filed Jun 2021 · $15M raise

National Resilience, Inc.Board seat

via ARCH Venture Partners · filed Jan 2021 · $755M raise

InsitroBoard seat

via ARCH Venture Partners · filed May 2020 · $143.2M raise

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GRAILBoard seat

via ARCH Venture Partners · filed May 2020 · $425M raise

Beam TherapeuticsBoard seat

via ARCH Venture Partners · filed Mar 2019 · $83.6M raise

Vir BiotechnologyBoard seat

via ARCH Venture Partners · filed Jun 2018

Syros Pharmaceuticals, Inc.Board seat

via ARCH Venture Partners · filed Feb 2018 · $11.4M raise

Gossamer BioBoard seat

via ARCH Venture Partners · filed Jan 2018 · $80M raise

Juno TherapeuticsBoard seat

via ARCH Venture Partners · filed Jun 2017

ArivaleBoard seat

via ARCH Venture Partners · filed Jun 2017 · $30M raise

Sienna BiopharmaceuticalsBoard seat

via ARCH Venture Partners · filed May 2017 · $40.5M raise

Sapphire EnergyBoard seat

via ARCH Venture Partners · filed Dec 2015 · $92M raise

Attribution from SEC filings, press coverage, and firm rosters.

Colleagues at ARCH Venture Partners

Ari Nowacek
Partner at ARCH Venture Partners
Axel Bouchon
Venture Partner at ARCH Venture Partners
Brian Cuneo
Senior Partner at ARCH Venture Partners
Carol Suh
Partner at ARCH Venture Partners
Clinton Bybee
Co-founder & Managing Director, Emeritus at ARCH Venture Partners
Corey Ritter
Partner at ARCH Venture Partners
David Moore
Senior Partner at ARCH Venture Partners
George Scangos
Venture Partner at ARCH Venture Partners

Network5

Bilal ZuberiScout
Founder and Managing Partner at Red Glass Ventures
Brad ZionsScout
General Partner at Pitbull Ventures
Brett CookScout
Partner at F-Prime Capital Partners
Dana SettleScout
Co-Founder & Managing Partner at Greycroft
Glen TullmanScout
Partner at 7wire Ventures

Investors connected to Robert in public investor directories — a warm-intro map.