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 (54)

Company	StageDateRound Size	Total Raised
Trase	SeedJun 2026$110M	$110M
City Therapeutics	Series BJun 2026$100M Series AOct 2024$140M	$240M
Co-investors: Ari Nowacek (ARCH Venture Partners)
Paradigm	Series BDec 2025$78M Series AJan 2023$200M	$320M
Co-investors: Niko Bonatsos (General Catalyst), Ramnik Arora (FTX Ventures), Max Rimpel (Index Ventures), Elena Viboch (General Catalyst), David Schenkein (GV (Google Ventures)), Hemant Taneja (General Catalyst), Bilal Zuberi (Lux Capital), Stephen Knight (F-Prime Capital Partners), Brett Cook (F-Prime Capital Partners), Justin Kao (DFJ Growth), Alaa Halawa (Vir Biotechnology, Inc.), Jay Markowitz (ARCH Venture Partners), Eoghan McCabe (Spark-Local, Inc), Jared Friedman (Israel Defense Forces), Scott Belsky (capitalB), Arash Ferdowsi, Karim Atiyeh, Balaji Srinivasan
SciNeuro	Series UnknownDec 2025$53M Series ADec 2020$100M	$150M
Synchron	Series DNov 2025$200M Series CDec 2022$75M	$320M
Co-investors: Alex Morgan (Khosla Ventures), Ari Nowacek (ARCH Venture Partners), Christian Angermayer (Presight Capital), Thomas Reardon (WestView Capital Partners), Chris Sklarin (Castor Ventures)
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)
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), Eric Schmidt (Innovation Endeavors), Dana Settle (Greycroft Partners), Ashton Kutcher (Sound Ventures), Jim O'Shaughnessy (O'Shaughnessy Asset Management), Effie Epstein (Sound Ventures), Guy Oseary (Sound Ventures)