Investing Profile

Nathan Doctor

InvestorVCFounder

Founder at Infinite Capital

infinitecapital.ioUnited States

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Current Investing Position

Infinite Capital Investor

Investment Range

$100K - $5.0M

Sweet Spot

$1.5M

Investments On Record

Nathan Doctor is on these Sector & Stage Rankings

Education (Series A)Education (Seed)Space (Series A)Space (Seed)Web3/Crypto (Series A)Web3/Crypto (Seed)DeepTech (Series A)DeepTech (Seed)

Nathan Doctor's Investments On Record (31)

Company	StageDateRound Size	Total Raised
Mach Industries	Series CSep 2026$600M Series CJun 2026$300M	$1.1B
Co-investors: Stephanie Zhan (Sequoia Capital), Shaun Maguire (Sequoia Capital), Keith Rabois (Khosla Ventures), Geoff Lewis (Bedrock Capital), Adam Guild (Rep.ai), Baylor Adams (Z-Fellows)
Valar Atomics	Series ANov 2025$110M	$1.1B
Co-investors: Shaun Maguire (Sequoia Capital), Doug Philippone (Snowpoint Ventures), Ludwig Schulze (Castor Ventures (an Alumni Ventures Fund)), Stephen Cole (Trammell Venture Partners), Stephen Cole
Radical AI	SeedJul 2025$55M	$55M
Co-investors: Laura Rippy (Alumni Ventures )
H3X Technologies	Series AAug 2024$20M SeedApr 2021$4M	$24M
Co-investors: Chris Moran (Lockheed Martin Ventures), Brad Flora (Y Combinator), Rauno Miljand (Metaplanet), Mendy Yang (Soma Capital), Mike Miller (Liquid 2 Ventures, LLC), Gregory Baker (Alumni Ventures Group), Philip Carson (Cubit Capital), Irene Mingozzi (LombardStreet Ventures)
nftperp	AngelMay 2024	$3M
Co-investors: Jonathan Gabler (Outlier Ventures)
Apollo ID	Pre SeedMar 2024$3M	$3M
Co-investors: Matt Sechrest (Sky9 Capital), Steve Chen (Modernist)
Medallion	Series ADec 2023$14M SeedMay 2022$9M	$150M
Co-investors: Sangeen Zeb (GV (Google Ventures)), Natalie Sandman (Spark Capital), William Reed (Spark Capital), Andrew Reed (Sequoia Capital), Zachary Sims (Bowery Capital), Joe Montana (Liquid 2 Ventures), Darian Shirazi (Gradient Ventures), Jarrod Dicker (TCG (The Chernin Group)), Peter Reinhardt (ARCADIAN Fund), Elliott Cohen (Moving Capital), Elad Gil (Think Colorado), Daniel Gross (Various), Nat Friedman (Self-employed), Vishal Lugani (aCrew Capital), Kevin Alvarez-Fung (Predictive VC), Ryan Bubinski (Several Startups), Edvard Engesæth, Will Gaybrick
Membrane Labs	UndisclosedOct 2023$20M	$20M

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