/Investor DB

Mantis Capital — 2025 Investments

8 investments dated 2025 · listed companies and verified rows first · show all

Doctronicdoctronic.aiin𝕏Sep 2025 · $20M

Doctronic builds an AI system trained on peer-reviewed medical evidence to provide 24/7 medical triage and consultation, achieving 99.2% alignment with board-certified clinicians.

AI & Machine LearningDigital HealthHealthtechNew York, US

Matt Pavelle(Co-founder)inDr. Adam Oskowitz(Co-founder)inAdam Oskowitz(Founder)Adam Oskowitz Matt Pavelle(Founder)

Co-investorsAbstract VenturesArtis VenturesLightspeed Venture PartnersPID Fund I, a series of DV Collective, LPSamsung NextSeven Stars Ventures+6 more

Ederaedera.devinFeb 2025 · $15M

Edera builds products focused on secure computing.

Cloud ComputingCybersecurityDeveloper ToolsSeattle, US

Emily Long(Founder)inAlex Zenla(Founder)inAriadne Conill(Founder)Marco Miraglia(Founder)in

BoardHADLEY HARRIS(Director)JAMES WU(Director)

Co-investors645 VenturesEniac VenturesFPVGenerationshipIn-Q-TelM12 (Microsoft's Venture Fund)+2 more

Fifth Doorfifthdoor.cominSeed · Nov 2025 · $20M

Fifth Door provides a platform for users to create, share, and play games with AI, targeting players and creators who want to develop games without specialized technical skills.

AI & Machine LearningConsumerGamingSan Francisco, US

Amir Ghazvinian(CTO)inDaniel Kan(CEO)in

Co-investorsDaft CapitalFelicis VenturesRebel FundY CombinatorJustin KanProtagonist

Keycardkeycard.aiin𝕏Oct 2025 · $38M

Keycard provides infrastructure for AI agents to operate safely and securely in production environments, enabling developers to connect agents to services across multiple clouds while maintaining identity, policy, and audit controls.

AI & Machine LearningCloud ComputingCybersecurityDeveloper Tools

Ian Livingstone(Founder)inMatthew Creager(Founder)inJared Hanson(Founder)in

Co-investorsAcrew CapitalAndreessen Horowitzboldstart venturesEssence Venture CapitalExceptional CapitalModern Technical+2 more

Lightning AIlightning.aiin𝕏Dec 2025 · $40M

Lightning AI, creator of PyTorch Lightning, runs an end-to-end AI development cloud and merged with GPU provider Voltage Park in 2026.

San Francisco, US

William Falcon(Founder)inSaurabh Giri(Executive Officer)inOzan Kaya(Executive Officer, Director)Luca Antiga(Founder)

BoardAmit Mukherjee(Director)inSam Yagan(Director)in

Co-investorsBain Capital VenturesCapital B Private HoldingsCisco InvestmentsCoatue ManagementIndex VenturesK5 Global+23 more

Outerliveouter.comSeries A · Sep 2025 · $11M

Outer sells outdoor and backyard furniture directly to consumers, offering products to help homeowners furnish and transform their outdoor spaces.

ConsumerDirect to ConsumerE-commerceSanta Monica, US

Terry Lin(Founder)inJiake Liu(Founder)in

Co-investorsCosmic Venture PartnersFlucas VenturesMucker CapitalSocial StartsTRAC (Third Round Analytics Capital)Unlock Venture Partners+5 more

Underdogunderdogfantasy.comin𝕏Jan 2025

Underdog Fantasy offers a sports predictions and betting product where users make picks on team outcomes, spreads, totals, moneylines, and parlays for entry amounts from $1 to $2,000.

ConsumerGamingSports TechBrooklyn, US

Jeremy Levine(Founder)inJena Pollock(Executive Officer)inBrandon Alan Stakenborg(Executive Officer, Director)Brandon Stakenborg(Founder)Trevor John(Founder)

Co-investors305 VenturesAcies InvestmentsBackwards CapitalDarco CapitalNight CapitalPROOF+6 more

XSYxsy.fi𝕏Seed · May 2025 · $5M

YieldPoint operates a multi-chain crypto yield platform whose first product, Unity ($UTY), is a dollar-pegged, tokenized market-neutral position that generates yield from crypto trading activity rather than price direction.

Crypto & Web3Fintech

David B. Markley(Chief Operating Officer)inW. Sean Ford(Chief Executive Officer)Austin Campbell(Chief Strategy Officer)

Co-investorsBorderless VenturePaper VenturesBlizzard the AvalancheBorderless CapitalChainview CapitalProtagonist

Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.