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	$290M
Co-investors: David Schenkein (GV (Google Ventures)), Hemant Taneja (General Catalyst), Niko Bonatsos (General Catalyst), Bilal Zuberi (Lux Capital), Brett Cook (F-Prime Capital Partners), Stephen Knight (F-Prime Capital Partners), Jay Markowitz (ARCH Venture Partners), Alaa Halawa (Mubadala), Justin Kao (DFJ Growth), Jared Friedman (Israel Defense Forces), Scott Belsky (A24), Eoghan McCabe, Balaji Srinivasan, Karim Atiyeh
Synchron	Series DNov 2025$200M Series CDec 2022$75M	$280M
Co-investors: Alex Morgan (Khosla Ventures), Chris Sklarin (Alumni Ventures ), 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)), Walter Kortschak (Kortschak Investments), Chris Denny-Brown (O'Shaughnessy Ventures), Effie Epstein (Sound Ventures), Guy Oseary (Sound Ventures), Ashton Kutcher (Sound Ventures), Eric Schmidt (Innovation Endeavors), Dana Settle (Greycroft Partners)
Vilya	Series AJun 2024$21M Series AAug 2022$50M	$71M
Co-investors: Greg Yap (Menlo Ventures), Steven Gillis (ARCH Venture Partners)