Investing Profile

Robert Nelsen

VCInvestorAngel

Co-founder and a Managing Director of ARCH Venture Partners

archventure.com/team/robert-t...New York, New York

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Current Investing Position

ARCH Venture Partners Managing Director

Investment Range

$50K - $150.0M

Sweet Spot

$75.0M

Investments On Record

Current Fund Size

$635.8M

Robert Nelsen is on these Sector & Stage Rankings

BioTech (Seed)BioTech (Series A)Seattle / Portland AI (Seed)AI (Series A)New York City San Francisco Bay Area Midwest Angel, Scout, and Solo-Capitalists Wellness & Fitness (Series A)Wellness & Fitness (Seed)Therapeutics (Series A)Therapeutics (Seed)SaaS (Series A)Digital Health (Series A)Digital Health (Seed)SaaS (Seed)

Robert Nelsen's Investments On Record (53)

Company	StageDateRound Size	Total Raised
SciNeuro	Series UnknownDec 2025$53M Series ADec 2020$100M	$150M
Paradigm	Series BDec 2025$78M Series AJan 2023$200M	$320M
Co-investors: Niko Bonatsos (General Catalyst), Ramnik Arora (FTX Ventures), Hemant Taneja (General Catalyst), Elena Viboch (General Catalyst), Bilal Zuberi (Lux Capital), Stephen Knight (F-Prime Capital Partners), Brett Cook (F-Prime Capital Partners), Alaa Halawa (Mubadala), Jay Markowitz (ARCH Venture Partners), Jared Friedman (Y Combinator), Justin Kao (DFJ Growth), Balaji Srinivasan, Arash Ferdowsi, Eoghan McCabe, Scott Belsky, Karim Atiyeh
Synchron	Series DNov 2025$200M Series CDec 2022$75M	$320M
Co-investors: Alex Morgan (Khosla Ventures), Christian Angermayer (Presight Capital), Thomas Reardon (PSG), Ari Nowacek (ARCH Venture Partners)
Dispatch Bio	Series AJul 2025$220M	$220M
Co-investors: Steven Gillis (ARCH Venture Partners)
Be Biopharma	Series CJan 2025$92M Series UnknownOct 2024$82M Series BApr 2022$130M	$360M
Co-investors: Jason Rhodes (Atlas Venture), Steven Gillis (ARCH Venture Partners), Melissa McCracken (Nextech Invest)
City Therapeutics	Series AOct 2024$140M	$140M
Co-investors: Ari Nowacek (ARCH Venture Partners)
Stability AI	Series UnknownJun 2024$80M	$210M £89M
Co-investors: Gaurav Gupta (Lightspeed Venture Partners), Colin Bryant (New Enterprise Associates (NEA)), Jim O'Shaughnessy (O'Shaughnessy Ventures), Effie Epstein (Sound Ventures), Guy Oseary (Sound Ventures), Ashton Kutcher (Sound Ventures), Dana Settle (Greycroft), Walter Kortschak (Summit Partners), Eric Schmidt (Innovation Endeavors), Chris Denny-Brown (O'Shaughnessy Ventures), Mei Z.
Vilya	Series AJun 2024$21M Series AAug 2022$50M	$71M
Co-investors: Greg Yap (Menlo Ventures), Steven Gillis (ARCH Venture Partners)