Fundraising Fox
Jamaica Plain · Pre-Seed–Series A · 4 people tracked
Also known as PARAMETRIC HOLDINGS LLC
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Investment thesis
Partners with Woods Hole Oceanographic Institution to spin out ocean-science startups with scientist-founders via a tech-transfer process, granting direct access to IP and the Ocean Carbon/Industrials/Organics framework.
Source: firm website, verified Oct 13, 2026.
Team · 4 people
from curated & public directoriesShinichi Saijo, born in Tokushima Prefecture in 1973, graduated from Waseda University's Faculty of Law in 1996 and began his career at Itochu Corporation before joining CyberAgent in 2000, where he later served as Executive Vice President and COO and led its venture investment arm as founding president in 2006. In 2013 he became a co-founder and general partner at WiL, and in 2018 he founded XTech and XTech Ventures, subsequently acquiring Excite through a tender offer and becoming President and CEO of Excite Holdings Co., Ltd. that December. He was appointed a board member of the Japan Venture Capital Association in 2022.
Founder mafia
2 people who came through Propeller VC went on to found or lead other companies.
What they invest in
from 26 of 27 portfolio companiesCleantech ×12Climate Tech ×10AI & Machine Learning ×9Hardware ×7Deep Tech ×6Enterprise Software ×6Energy ×5SaaS ×4
HQs:United States×20Canada×1United Kingdom×1
Investments · 27 tracked
founders shown can be your intro pathBy year:2026 · 22025 · 32024 · 42023 · 32022 · 12021 · 114 dated
Agency built AI products; the company announced it is being acquired by Klaviyo and winding down on August 31, 2026, with its team joining Klaviyo.
AI & Machine Learning
Elias TorresinLukeAdam Silverman(Founder)Alex Reibman(Founder)
Co-investorsArray Ventures Management LlcArtisanal VenturesFelicis VenturesHubSpot VenturesMenlo VenturesSequoia Capital+4 more
Platform for floating offshore wind turbines to transform wind energy economics
EnergySan Francisco, US
Sam Kanner(Executive Officer, Director)in
BoardMatthew Nordan(Director)in
Co-investorsAzolla Ventures
Aikido Technologies develops technologies for clean energy and intelligence infrastructure to support a sustainable future.
AI & Machine LearningCleantechData & InfrastructureEnergy
Co-investorsAzolla Ventures
Allium manufactures stainless-clad rebar that meets the AASHTO M 329M standard, offered in a full size range (#3–#18) and ASTM A615 and A706 specifications.
Advanced ManufacturingCleantechConstruction TechNew MaterialsPeabody, US
Steven Jepeal(Cofounder)inSam McAlpine(Founder)in
Co-investorsAera VCAlumni VenturesBay Bridge Ventures ClimateCastor VenturesCreative Destruction Lab (CDL)Tailwind Futures
Aquatic Labs develops ocean instrumentation and marine analytical technology, drawing on expertise in oceanographic research and physics.
CleantechClimate TechDeep TechHardwareIoT
Allan Adams(Founder & CEO)in
Co-investorsBURNT ISLAND VENTURESFuture Planet Capital
Banyu Carbon develops a photochemical carbon capture process that uses sunlight to release CO2 from seawater, which naturally absorbs atmospheric carbon, for storage in geologic formations or industrial use.
CleantechClimate TechDeep TechSeattle, US
Alex Gagnon(Executive Officer, Director)inJulian Sachs(Executive Officer, Director)in
Co-investorsCarbon Removal Partners
Blue Energy develops scalable small modular reactor (SMR) technology to deliver nuclear power at scale.
CleantechClimate TechDeep TechEnergyHardwareWashington, US
JakeTomJacob Jurewicz(Executive Officer, Director)Thomas O'Neill(Executive Officer, Director)Jake Jurewicz(CEO & Co-founder)
BoardOrin Hoffman(Director)
Co-investorsAt One VenturesAngular VenturesNeutron Power VenturesNucleation CapitalTamarack GlobalThe Engine Ventures+4 more
Bodeswell is a travel chronicle and personal blog documenting a family's extended journey across multiple countries since 2009.
Media & EntertainmentAlameda, US
Co-investorsArgon VenturesGrit Capital PartnersCleo Capital
Calcarea develops nature-based solutions to decarbonize the economy, focusing on carbon capture and removal technologies.
CleantechClimate TechDeep TechPasadena, US
Andy StevensonJess AdkinsinPierre ForininWill Berelson
Co-investorsAzolla VenturesGrantham Foundation
CarbonRun develops river alkalinity enhancement technology to remove carbon dioxide from the atmosphere while restoring freshwater ecosystems.
CleantechClimate TechImpact & Social GoodDartmouth, CA
Dr. Shannon Sterling(Co-founder)Luke Connell(Founder)inShannon Sterling(Founder)inEddie Halfyard(Founder)
Co-investorsCounteract OneGolden VenturesPanache VenturesPlug and Play VenturesCounteract
Circle Seafoods operates floating processor barges that freeze wild-caught seafood at ultra-low temperatures at sea, providing refrigeration, sorting and grading technology, and cold storage, along with amenities for fishermen.
Circular EconomyFoodTechHardwareLogistics & Supply ChainSitka, US
Gene Patrick Glaab(Executive Officer, Director)Charles B. Campbell(Executive Officer, Director)Eren Barclay Shultz(Executive Officer, Director)
BoardVictor Kiam(Director)
Ebb develops electrochemical water treatment technology that recovers freshwater from desalination brine while removing carbon dioxide and producing industrial chemicals.
CleantechClimate TechSan Carlos, US
Ben Tarbell(Founder)inMatthew Eisaman(Founder)Dave Hegeman(Founder)Matt Eisaman(Founder)
BoardKevin Tidwell(Director)Mike Biddle(Director)in
Co-investorsAutodesk FoundationChrysalixCongruent VenturesEvok InnovationsPrelude VenturesGE Ventures
Greenly provides an AI-based platform for carbon accounting, greenhouse gas assessment, product life-cycle analysis (LCA), and ESG compliance reporting.
AI & Machine LearningClimate TechSaaSAstoria, US
Matthieu Vegreville(Founder)inAlexis Normand(Founder)inArnaud Delubac(Founder)in
Co-investorsEnergy Impact PartnersFelicis VenturesSTATION FWind VentureXAngeBenhamou Global Ventures+5 more
Harvey provides domain-specific AI products for legal and professional services firms, enabling contract analysis, due diligence, compliance, and litigation tasks.
AI & Machine LearningEnterprise SoftwareLegalTechSan Francisco, US
Winston Weinberg(Founder)inGabe Pereyra(Founder)inGabriel Pereyra(Founder)inWinston Weinberg Gabriel Pereyra(Founder)
Co-investorsAndreessen HorowitzKleiner PerkinsOpenAI Startup FundArtisanal VenturesCaesar VenturesCoatue Management+29 more
Hohonu builds low-cost water level sensors that transmit real-time data on tides, flooding, and sea-level rise for coastal communities and water monitoring teams.
Climate TechGovTechHardwareIoT
Brian Glazer(Founder)inStanley Lio(Co-founder / Engineer)
Co-investorsBlue StartupsEcho River CapitalTailwind FuturesTELUS Pollinator Fund for Good
Indeximate provides cloud-based analytics for offshore wind operators to monitor the health of subsea power cables using fibre optic sensing technology, predicting cable failures and enabling preventative maintenance.
CleantechData & InfrastructureDeep TechEnergy
Paul Clarkson(Director)Dr Chris Minto(Director)Dr Alastair Godfrey(Director)
Juicebox is an AI recruiting platform that helps talent acquisition teams discover, evaluate, and outreach to candidates at scale using AI search across 800M+ global profiles, alongside AI agents that automate sourcing and follow-up workflows.
Advanced ManufacturingAI & Machine LearningEnterprise SoftwareHR TechSaaSLos Angeles, US
David Paffenholz(Founder)inIshan Gupta(Founder)inLogan Kaeleigh Gilbert(Chief Executive Officer)Duane Leigh Gilbert(Chief Technical Officer)David Paffenholz Ishan Gupta(Founder)Saransh Saini(Founding Engineer)
Co-investorsAmino CapitalavraBrave CapitalSequoia CapitalY CombinatorBond Capital Management+11 more
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Navier builds the N30, an electric hydrofoil boat that flies above the water using a canard foil configuration and a proprietary flight control system that actively adjusts aileron flaps based on real-time sensor feedback.
CleantechHardwareMobility & TransportationChicago, US
Sampriti Bhattacharyya(Founder & CEO)inKenny Jensen(CTO)DAVID CALONE(Director)JOSHUA METNICK(Executive Officer, Director)RYAN EBERHARDT(Director)VUJADIN MILINOVICH(Director)
Co-investorsDraper AssociatesFOG VenturesGaingelsKoru CapitalMarketX VenturesNextView Ventures+6 more
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Nexxa builds AI agents that capture a company's decision logic, institutional knowledge, and operational judgment, then execute tasks by writing directly into the company's systems of record.
AI & Machine LearningEnterprise SoftwareSaaSSunnyvale, US
Philipp Wehn(Founder)inDavid (DH) Huang(Founder)inNegeen Sonya Kohyarin
Co-investorsAugment VenturesBeat VenturesConstruct CapitalPlug and Play VenturesUntapped Ventures
Orpheus Ocean develops remotely operated and autonomous vehicles that enable exploration and data collection in deep ocean environments, including the hadal zone below 6,000 meters, serving oceanographic research, conservation, and resource management applications.
Deep TechHardwareRobotics
Jake Russell(Co-founder & CEO)inCasey Machado(Co-founder & CTO)in
Co-investorsJetstream
Rewind develops carbon removal projects leveraging natural processes like biomass and geological storage to capture and sequester carbon at scale for climate mitigation.
Circular EconomyCleantechClimate Tech
Eitan Brettler(Founder)Kobi Kaminitz(Founder)Matthew Geraghty(Founder)Ram Amar(Founder)
Co-investorsLeap Forward VenturesMensch Capital PartnersThird DerivativeYes VCZORABessemer Venture Partners+4 more
Rillet is an AI-native ERP system designed for finance teams, built by former Big Four accountants and ERP operators.
AI & Machine LearningEnterprise SoftwareSaaSSan Francisco, US
Nicolas Kopp(CEO & Founder)inStelios Modes(CTO & Co-founder)in
Co-investorsICONIQAndreessen HorowitzBain Capital VenturesBoxGroupCapital B Private HoldingsFirst Round Capital+10 more
Rogo offers a secure AI platform for financial firms that automates workflows across research, analysis, and reporting, using custom-trained language models built for finance.
AI & Machine LearningEnterprise SoftwareFintechNew York, US
Gabriel Stengel(Founder)inJohn Willett(Founder)inTumas Rackaitis(Founder)in
Co-investors137 VenturesAlleyCorpBoxGroupKleiner PerkinsMantis CapitalPositive Sum Capital+12 more
Serval is an AI-native IT service management (ITSM) platform that automates help desk requests, employee onboarding/offboarding, and access provisioning using AI agents.
AI & Machine LearningDeveloper ToolsEnterprise SoftwareSan Francisco, US
Jake Stauch(Founder)inAlex McLeod(Founder)inJake Stauch Alex McLeod(Founder)
Co-investorsavraBoxGroupChemistryFirst Round CapitalGeneral CatalystMeritech Capital Partners+8 more
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Vatn designs and manufactures low-cost, modular autonomous underwater vehicles with proprietary autonomy, navigation, and control software for undersea ISR, logistics, sensing, and payload delivery missions.
Defense TechHardwareRoboticsProvidence, US
Frederick Mills(Founder)inNelson Mills(Founder)inGeoff Manchester(Founder)inDan Hendrix(Founder)Freddie Mills(Founder)
BoardThomas Hendrix(Director)in
Co-investorsAirbus VenturesBackswing VenturesBeyond CapitalBlue CollectiveBVVCCapital Factory+17 more
Vema Hydrogen develops Engineered Mineral Hydrogen (EMH), a patented production method that stimulates naturally occurring subsurface geochemical reactions in ophiolite and BIF rock formations to produce carbon-free hydrogen at under $1/kg.
CleantechClimate TechEnergyHouston, US
Pierre Levin(CEO)inColin McCulley(Director of Operations)in
Co-investorsPace VenturesExtantia Capital
Other
Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.
Hum
Portfolio news
latest coverage across their companies
Harvey · techcrunch.com · Sep 9, 2026
Rillet · techcrunch.com · Aug 19, 2026
Juicebox · hiringtechstack.com · Aug 7, 2026
Orpheus Ocean · trysignalbase.com · Mar 31, 2026
Serval · siliconangle.com · Dec 23, 2025
Frequently asked questions
- How many investments has Propeller VC made?
- Propeller VC has 27 tracked investments, 1 of which have exited, including 5 dated in the last 24 months.
- What stage does Propeller VC invest at?
- Propeller VC invests at the Pre-Seed, Seed, Series A stages.
- What is Propeller VC's typical check size?
- Propeller VC typically writes checks of $100K – $10M.
- What sectors does Propeller VC focus on?
- Propeller VC focuses on AgTech, Climate Tech, Deep Tech, Energy, FoodTech, Hardware, Mobility & Transportation.
- Where is Propeller VC located?
- Propeller VC is headquartered in Jamaica Plain, US.
- Does Propeller VC lead rounds?
- Propeller VC typically participates in rounds rather than leading them.
Co-investors · 66
Sequoia Capital is a venture capital firm that partners with founders to build technology companies.
Khosla Ventures is a venture capital firm that backs bold, early-stage, technology-driven companies across deep tech and other sectors, providing hands-on 'venture assistance' to help founders build category-defining businesses.
Kleiner Perkins is a venture capital firm that backs founders across technology and life sciences, from early stage through growth.
Azolla Ventures is an early-stage climate investor that backs founders building solutions with the potential for large-scale greenhouse gas reductions. It was created by Prime Coalition, a nonprofit that directs catalytic capital toward scalable climate solutions.
Andreessen Horowitz (a16z) is a venture capital firm founded in 2009 by Marc Andreessen and Ben Horowitz, known for pioneering the platform model with a large team of operators supporting founders across stages.
Since 1999, Redpoint Ventures has partnered with visionary founders to create new markets and redefine existing ones. The firm invests early in startups building category-defining companies, from AI and infrastructure to security. Redpoint has backed hundreds of companies, including Netflix, Snowflake, Stripe, Ramp, Twilio, Ramp, and Hims, and today backs the next generation of AI leaders like OpenAI, Legora, Modal, Abridge and Physical Intelligence. Redpoint is based in San Francisco and has offices in New York City and Woodside. For more information visit: http://www.redpoint.com/
First Round Capital is an early-stage venture firm partnering with founders at the very first stages of company creation, backing companies from angel through seed with hands-on support across GTM, recruiting, and operations.
Coatue Management is a technology-focused investment firm that invests in innovation across both public and private markets with responsible risk management.
General Catalyst is a global venture capital and investment firm backing founders across stages and industries, with a notable focus on AI, healthcare transformation, defense, and space.
Founders Fund is a venture capital firm that backs technology companies building transformative products.
Lightspeed Venture Partners is a global venture capital firm that backs founders from Seed through Series F and beyond, emphasizing deep, immersive partnerships with the companies it invests in.
▶54 more co-investors
Insight PartnersSV AngelBain Capital VenturesCRV (Charles River Ventures)Susa VenturesFirstMark CapitalScale Venture PartnersBond Capital ManagementCreandumArray Ventures Management LlcLead Edge CapitalCapital FactoryConvictionChingona VenturesCraft VenturesIndex VenturesFounder CollectiveNotable CapitalBenchmarkIVP (Institutional Venture Partners)Norwest Venture PartnersBalderton CapitalC2 InvestmentsSciFi VCInnovation EndeavorsCanvas VenturesTrinity VenturesPear VCHanabi CapitalNexus Venture PartnersMatrixWGI GroupTenaya Capital468 CapitalOurCrowdOMERS VenturesHighland Capital PartnersMucker CapitalKohlberg Kravis RobertsMango CapitalRocketship.vcLocus VenturesVitalStage VenturesZ47BIOSPRING PARTNERSIrishAngelsGlobal Innovation FundG20 VenturesMotivate Venture CapitalHelion Venture PartnersXSeed CapitalKain CapitalFramework Venture PartnersDorm Room
Firms observed investing alongside Propeller VC, from public investor directories. Shared companies are the overlap with Propeller VC's recorded portfolio.
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