Seaplane Ventures — Full Portfolio
15 tracked investments · listed companies and verified rows first
Warm-intro marketplace connecting tastemakers.
PartnerJoe Magyer· solo GP
Co-investorsBerkeley FrontierBlitzscaling Ventures
Better Auth is an open-source authentication framework for TypeScript applications that provides composable, plugin-based authentication with support for multiple methods including credential auth, social sign-on, passkeys, and enterprise features.
CybersecurityDeveloper ToolsEnterprise SoftwareSaaSSan Francisco, US
Bereket Engida(Founder)in
PartnerJoe Magyer· solo GP
Co-investorsChapter OneLobster CapitalP1 VenturesRain CapitalTranspose Platform ManagementY Combinator
Quito
Roberto Alejandro Arroyo Aguirre(Executive Officer, Director)Mauricio Weiss(Director)inSantiago Nicolas Arroyo Aguirre(Executive Officer, Director)
PartnerJoe Magyer· solo GP
Co-investorsZacua Ventures
Hyperspell builds a context platform that connects to enterprise data sources (Slack, email, documents, CRMs, ticketing systems) and synthesizes them into a unified, permission-aware knowledge graph accessible to AI agents.
AI & Machine LearningData & InfrastructureEnterprise SoftwareSaaSSan Francisco, US
Conor Brennan-Burke(Founder)inManu Ebert(Founder)in
PartnerJoe Magyer· solo GP
Co-investorsDraper B1Fjor FoundersImagination CapitalMento vcOlive Tree CapitalPerceptive Ventures Management Company, Llc+2 more
micro1 operates a data lab that produces expert human data, reinforcement-learning training environments, and contextual evaluations to train frontier AI models and assess AI agents.
AI & Machine LearningData & InfrastructureRobotics
PartnerJoe Magyer· solo GP
Co-investors01 AdvisorsActivant CapitalCoho DeeptechCompanyon VenturesConversion CapitalCosmic Venture Partners+3 more
Packsmith is an AI-driven fulfillment and distribution platform that handles order fulfillment, delivery, and supply chain strategy for brands.
AI & Machine LearningLogistics & Supply ChainSaaSLos Angeles, US
Simon Robb(Founder)
PartnerJoe Magyer· solo GP
Co-investorsPrana Tech Ventures
Rainwalk provides pet insurance policies with expanded coverage options and enhanced value for cat and dog owners.
ConsumerInsurTechColumbia, US
Joshua Snead(Executive Officer, Director)Tong Wu(Founder)
PartnerJoe Magyer· solo GP
Co-investorsGlobal Insurance AcceleratorManchesterStory Group, LLCNew Stack VenturesTechstars
Rocketable acquires software businesses and automates their operations by replacing human staff with AI agents across functions; the company develops tools to coordinate these agents toward shared business objectives.
Enterprise SoftwareSan Francisco, US
Alan Wells(Founder)in
PartnerJoe Magyer· solo GP
Co-investorsY Combinator468 CapitalBloomberg BetaRebel FundTrue Ventures
PartnerJoe Magyer· solo GP
Super.AI provides intelligent document processing (IDP) software that automates information extraction and downstream business processes from documents for enterprises in logistics, shipping, financial services, and technology sectors.
AI & Machine LearningData & InfrastructureEnterprise Software
Brad Cordova(Founder)inBrad
PartnerJoe Magyer· solo GP
Co-investorsMosaic VenturesNFXTPG
PartnerJoe Magyer· solo GP
Unifize provides a unified platform for managing compliance and knowledge processes in FDA- and ISO-regulated industries such as manufacturing, life sciences, and aerospace.
Advanced ManufacturingEnterprise SoftwareHealthtechIoTSaaSBengaluru, IN
Ben Merton(Co-founder & CEO)Lakshman Thatai(Co-founder & Head of Product)Avinash Sultanpur(Co-founder & VP of Engineering)
PartnerJoe Magyer· solo GP
Co-investorsTechstarsSupermorpheus
Upkid provides a staffing solution for child care providers to help them address staffing shortages.
B2B MarketplacesEdTechHR TechMarketplaces
PartnerJoe Magyer· solo GP
Co-investorsCorazon CapitalGutter CapitalFullCircleNewfund Capital
Veria AI is an autonomous pentesting platform that identifies and exploits security vulnerabilities across code repositories, then generates fix recommendations.
AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSan Francisco, US
Cayden Liao(Founder)inJayden Sarveshkumar(Founder)inStephen Xu(Founder)in
PartnerJoe Magyer· solo GP
Co-investorsY CombinatorAntigravity CapitalAmino CapitalBBQ CapitalEight CapitalHypersphere Ventures+5 more
XENA Intelligence provides AI-powered software and consulting services to help ecommerce brands optimize listings, campaigns, and operations across marketplaces like Amazon.
AdTechAI & Machine LearningData & InfrastructureDirect to ConsumerE-commerceMarketing TechSaaSLouisville, US
Akhil Suresh Nair(Founder)in
PartnerJoe Magyer· solo GP
Co-investorsBluegrass Angel VentureRender CapitalTechstars
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.






