Jamaica Plain · Pre-Seed–Series A · 6 people tracked
Also known as PARAMETRIC HOLDINGS LLC
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1,316 people in our graph share verified history with the Propeller VC team — schools, employers, funds. One of them is your warm intro.
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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 Sep 1, 2026.
Team · 6 people
from curated & public directories
Founder mafia
2 people who came through Propeller VC went on to found or lead other companies.
What they invest in
from 16 of 17 portfolio companiesCleantech ×12Climate Tech ×8Deep Tech ×6Hardware ×6Energy ×4AI & Machine Learning ×2Circular Economy ×2Data & Infrastructure ×2
HQs:United States×11Canada×1United Kingdom×1
Investments · 17 tracked
founders shown can be your intro pathBy year:2026 · 12024 · 12022 · 13 dated
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 Ventures (an Alumni Ventures Fund)Creative Destruction Lab (CDL)
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)
BoardOrin Hoffman(Director)Michael Kearney(Director)in
Co-investorsAt One VenturesAngular VenturesNucleation CapitalTamarack GlobalThe Engine VenturesFounders Fund+3 more
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(Co-founder)
Co-investorsCounteract OneGolden VenturesPanache Ventures
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(Executive Officer, Director)inMatthew Eisaman(Executive Officer, Director)
BoardKevin Tidwell(Director)Mike Biddle(Director)inGabriel Kra(Director)in
Co-investorsAutodesk FoundationChrysalixCongruent VenturesEvok InnovationsPrelude Ventures
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)
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 & Transportation
Sampriti Bhattacharyya(Founder & CEO)inKenny Jensen(CTO)
Co-investorsDraper AssociatesNextView VenturesScript Capital
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-investorsBeat VenturesConstruct CapitalUntapped VenturesAugment 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
Co-investorsMensch Capital PartnersYes VCZORAH.I.G. Growth PartnersInsight Partners
Vatn Systems builds low-cost, high-volume autonomous underwater vehicles (UUVs), passive acoustic hydrophone arrays, and vehicle-agnostic navigation and signal-processing systems for undersea missions in GPS-denied, communications-contested waters.
Defense TechHardwareRoboticsPortsmouth, US
Geoff Manchesterin
BoardThomas Hendrix(Director)inGeoffrey Manchester(Director)Thomas Hennessey(Director)inNelson Mills(Executive Officer, Director)Frederick Mills(Director)in
Co-investorsBeyond CapitalBlue CollectiveBVVCCapital FactoryCentre Street PartnersChampion Hill Ventures+14 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 TechEnergy
Pierre Levin(CEO)inColin McCulley(Director of Operations)in
Co-investorsPace VenturesExtantia Capital
Portfolio news
latest coverage across their companiesRewind · finsmes.com · Jul 30, 2026
Blue Energy · simplywall.st · Jul 18, 2026
Ebb Carbon · newmarketpitch.com · Jul 13, 2026
Vatn Systems · thedefensepost.com · Dec 17, 2025
Nexxa AI · augmentventures.com · Sep 29, 2025
Frequently asked questions
- 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
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.
Founders Fund is a venture capital firm that backs technology companies building transformative products.
Insight Partners is an investment firm focused on accelerating revenue and profit growth in software companies, providing capital and operational support through its Insight Onsite team.
Capital Factory is an Austin, Texas-based early-stage investor that backs ambitious founders across the state, offering capital, customer connections, and access to its network.
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.
Sequoia Capital is a venture capital firm that partners with founders to build technology companies.
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General Catalyst is a venture capital firm operating as a partnership focused on company building and accelerating the growth of the businesses it backs.
Lightspeed is a global venture capital firm that has spent over two decades backing innovative companies as an early and first investor.
Craft Ventures is a venture capital firm run by a team of former founders, operators, and investors who partner closely with founders to help build and scale technology companies.
Techstars is a startup accelerator and early-stage investor that funds ambitious founders and provides capital, mentorship, and access to a global network of investors, operators, and corporate partners.
Index Ventures is a multi-stage venture capital firm that backs companies from Seed to IPO and beyond, including through its dedicated seed fund Index Origin.
▶54 more co-investors
Redpoint VenturesFounder CollectiveNotable CapitalBenchmarkSV AngelBain Capital VenturesFirst Round CapitalKleiner PerkinsCoatue ManagementIVP (Institutional Venture Partners)Norwest Venture PartnersCRV (Charles River Ventures)Balderton CapitalSusa VenturesFirstMark CapitalC2 InvestmentsSciFi VCInnovation EndeavorsScale Venture PartnersCanvas VenturesBond Capital ManagementTrinity VenturesPear VCHanabi CapitalCreandumNexus Venture PartnersMatrixWGI GroupArray Ventures Management LlcTenaya Capital468 CapitalOurCrowdOMERS VenturesLead Edge CapitalHighland Capital PartnersMucker CapitalKohlberg Kravis RobertsMango CapitalRocketship.vcLocus VenturesVitalStage VenturesZ47ConvictionBIOSPRING PARTNERSIrishAngelsGlobal Innovation FundG20 VenturesMotivate Venture CapitalHelion Venture PartnersXSeed CapitalChingona VenturesKain 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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