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
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: Steven Gillis (ARCH Venture Partners), Jason Rhodes (Atlas Venture), 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: Colin Bryant (New Enterprise Associates (NEA)), Gaurav Gupta (Lightspeed Venture Partners), Guy Oseary (Sound Ventures), Ashton Kutcher (Sound Ventures), Chris Denny-Brown (O'Shaughnessy Ventures), Dana Settle (Greycroft), Jim O'Shaughnessy (O'Shaughnessy Ventures), Eric Schmidt (Innovation Endeavors), Walter Kortschak (Summit Partners), Effie Epstein (Sound Ventures), Mei Z.
Vilya	Series AJun 2024$21M Series AAug 2022$50M	$71M
Co-investors: Greg Yap (Menlo Ventures), Steven Gillis (ARCH Venture Partners)
Gameto	Series BMay 2024$33M Series AJan 2022$20M	$120M
Co-investors: Dan Rose (Coatue), Dylan Morris (Insight Partners), Steve Jurvetson (Future Ventures), Maryanna Saenko (Future Ventures), Kristina Simmons (Overwater Ventures), Peter Kolchinsky (RA Capital), Laura Stoppel (RA Capital), Dusan Perovic (Two Sigma Ventures), Jack Abraham (Atomic), Anne Wojcicki
Xaira Therapeutics	Series AApr 2024$1B	$1B
Co-investors: Scott Gottlieb (New Enterprise Associates (NEA)), Vikram Bajaj (Foresite Capital)