Investing Profile

Stephen Romanoff

InvestorCEOFounderVC
General Partner at Mentat Private Credit Fund I, LP
babbageidea.comCharlotte, North Carolina
Photo of Stephen Romanoff, General Partner at Mentat Private Credit Fund I, LP

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Stanford University Network
925 CONNECTIONS
University of Washington Applied Physics Laboratory Network
841 CONNECTIONS
University of Washington Applied Physics Laboratory Network
841 CONNECTIONS
PwC Network
306 CONNECTIONS
US Army Network
43 CONNECTIONS
cb
$50K - $500K
$100K
4
CompanyStageDateRound SizeTotal Raised
Ordermark
Series BJul 2019
$28M
Co-investors: Sydney Meheula (Softbank Group), Chris Moody (Foundry Group), Ryan Broshar (Confluence Capital Partners), Alex Guerrero (Act One Ventures), Michael Silton (Act One Ventures), David Waxman (TenOneTen Ventures), Natty Zola (Matchstick Ventures)
Revolut
Series CApr 2018$250M
$1.6B
Co-investors: Julien Bek (Sequoia Capital), Neil Rimer (Index Ventures), Martin Mignot (Index Ventures), Alex Cook (Tiger Global Management), Oliver Samwer (Global Founders Capital), Ricardo Schäfer (Target Global), John Doran (TCV), Tom Stafford (DST Global), Matteo Gamba (Merchant Payments Ecosystem), Henrik Wetter Sanchez (Playfair Capital), Marco Valta (Hotmail), Andrew Nutter (Balderton Capital), Daniel Waterhouse (Balderton Capital), Ralph Baddour (Badhouse Ventures), Dan Jones (Jigsaw VC), David Murray-Hundley (Space Tech Ventures), Klaus Hommels (Lakestar), Soheil Mirpour, Christopher Zemina
Anduril Industries
Secondary MarketN/A
$14B
Co-investors: Joe Lonsdale (8VC), David Ulevitch (Andreessen Horowitz), Katherine Boyle (Andreessen Horowitz), Hemant Taneja (General Catalyst), Paul Kwan (General Catalyst), Raviraj Jain (Lightspeed Venture Partners), Will Kohler (Lightspeed Venture Partners), Trae Stephens (Founders Fund), Peter Thiel (Founders Fund), Josh Wolfe (Lux Capital), Jackson Moses (Afore Capital), Ross Fubini (XYZ Venture Capital), Aatish Patel (Other Ventures), Elad Gil (Think Colorado), Lachy Groom (Physical Intelligence), Ravi Mhatre (Anthropic), Greg Castle (Anorak Ventures), Geoff Lewis (Bedrock Capital), Brian Singerman (The Founders Fund), Aly Walji (Sparq Capital (SFO)), Michael Chase (Zero To One Capital), Jack Campbell (Signal Bay Capital), Stu Shea (01 Advisors), Ana Levine (E1 Ventures), Sebastian Bausch (11k Ventures), Mircea Pasoi (Stealth Capital), Mislav Tolusic (Marlinspike), Josh Manchester (Champion Hill Ventures), Brian Rabben (Rabben Hood Ventures), William Miller (Transform Investments), Fanny Surjana, Mattia Astori, Nick Hunley, Thomas Tull, Richard Cooperstein
Observe AI
SecondaryN/A
$5M
Co-investors: Yuri Sagalov (10100)
Co-Founder & CEO Babbage Education2025 - Present
General Partner Mentat Private Credit Fund I, LP2022 - Present
Consultant United States Department of WarPresent
Principle Tsar Consulting LLCPresent
Airborne Reconnaissance US ArmyPresent
Consultant PwCPresent
General Partner Phalanx Capital Group LLCPresent
Vice President of Private Credit U.S. Strategic CapitalPresent
Partner | Syndication University of Washington Applied Physics LaboratoryPresent
Investor PineconePresent
Partner Stealth Company (Stephen Romanoff)Present
Investor Observe.AIPresent
Strategy Consultant RelevantzPresent
Strategic Advisor RobostorePresent
Investment Committee Member University of Washington Applied Physics LaboratoryPresent
Co-Founder | CEO BabbagePresent
Advisory Board Member VIVID Development Group Part-timePresent
Strategic Advisor Sleeping Donkey Full-timePresent
Ambassador The Private Investment Group Part-timePresent
Chairman Of The Board VirumPresent
Co-Founder VirumPresent
Managing Partner Phalanx Capital Group LLCPresent
General Partner Phalanx Capital2018 - 2021
LRRS Fire team leader US Army2014 - 2020
Consultant United States Department of Defense2019 - 2019
Stanford University Physics Current
Georgia State University Finance International Finance and economics