🦊/Investors

Third Sphere

Venture capitaloperating company · company profile

New York · Pre-Seed–Series A · 6 people tracked

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Wesley Chanunlockedknows Shaun Abrahamson · together at Massachusetts Institute of Technology (overlapped)
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Investment thesis

Third Sphere invests early-stage capital to upgrade systems it views as broken or overlooked when it comes to responsibility toward people, businesses, and the public. Rather than limiting its focus to carbon emissions reduction, the firm targets a wide range of sectors, from infrastructure to supply chains, with the aim of securing a more resilient future. The firm emphasizes climate and systemic improvements and highlights the growing importance of corporate venture partnerships for climate-tech founders.

Source: firm website, verified Aug 3, 2026.

Stage
Pre-Seed–Series A
Check
$250K – $1M
HQ
New York, NY, US
Leads rounds
Follows
Instruments
Equity · Debt
Founded
2013
Tracked investments
109
Unicorns
1
Acquisitions
4

Team · 6 people

from public directories
Miela Mayer· Venture Partnerin

Founder mafia

2 people who came through Third Sphere went on to found or lead other companies.

What they invest in

from 82 of 109 portfolio companies

Cleantech ×24Hardware ×23Climate Tech ×22AI & Machine Learning ×21SaaS ×21Energy ×19IoT ×13Mobility & Transportation ×13

HQs:United States×48United Kingdom×3Switzerland×2Germany×2France×2Brazil×1

Investments · 109 tracked

founders shown can be your intro path

By year:2024 · 12023 · 12022 · 32021 · 22020 · 22018 · 12015 · 111 dated

Swellcyclesurfboardsswellcyclesurfboards.com✓ verified

SwellCycle manufactures recyclable surfboard cores using large-format 3D printing and high-performance composites, and is developing microfactory production systems for sports equipment and aerospace applications.

Advanced ManufacturingCircular EconomyCleantechConsumerHardwareNew MaterialsSports TechSanta Cruz, US

Patricio Guerrero(Co-Founder | CEO)in

Co-investorsSanta Cruz Venture

3Am Innovations3aminnovations.comin𝕏

3AM Innovations builds incident management technology for emergency response and event coordination, including a mobile app and deployable field kits.

Defense TechHardwareSaaSBuffalo, US

Katie Sullivan(Executive Officer)inMel Passarelli(Executive Officer, Director)inRyan Litt(Executive Officer, Director)Patrick O'Connor(Executive Officer, Promoter)Tom Dalfonso(Executive Officer)

BoardDaniel J. DiPofi(Director)

Co-investorsLaunch NYOUTBOUND CAPITALWNY Impact Investment Fund

Adionatechadionatech.comin

Adiona provides a dispatch tool for last-mile delivery operations that offers real-time fleet tracking, route monitoring, and customer communication capabilities.

AI & Machine LearningLogistics & Supply ChainSaaS

Applied Carbonappliedcarbon.comin

Applied Carbon develops technologies to regenerate soil and sequester atmospheric carbon for climate change mitigation and soil health improvement.

AgTechCleantechClimate Tech

Jason Aramburu(CEO + Co-Founder)inMorgan M. Williams(COO + Co-Founder)in

Co-investorsAutodesk FoundationCongruent VenturesS2G InvestmentsTO VCWireframe VenturesZag Capital+1 more

Arborjoinarbor.comin𝕏

Arbor provides a platform that helps households access renewable electricity at lower costs while reducing energy-related complexity.

ConsumerEnergySaaS

Co-investors645 VenturesCity LightFirst Round CapitalFJ LabsLowercarbon CapitalObvious Ventures+3 more

Architizerarchitizer.com

Architizer operates an online platform for the architecture and design industry, offering project galleries, firm and building-product directories, editorial content, job listings, and awards programs.

B2B MarketplacesConstruction TechMedia & EntertainmentNew York, US

Marc Kushner(Executive Officer, Director)inDavid Weber(Executive Officer)inPeter Gerber(Executive Officer, Director)

BoardAndrew Gaspar(Director)inAri Kushner(Director)Gary Handel(Director)

Co-investorsAugust CapitalGaspar Global Ventures

Blocpower +Moreblocpower.io

BlocPower upgrades buildings to reduce emissions and improve efficiency through sustainable retrofits and inclusive financing, focusing on underserved communities.

CleantechClimate TechImpact & Social GoodPropTech

Brian Lindsey(CEO)in

Co-investorsAmerican Family Insurance Institute for Corporate and Social ImpactCleo CapitalMaC Venture CapitalOperator CollectivePulse FundVoLo Earth Ventures

Blokableblokable.com

Advanced ManufacturingClyde Hill, US

Aaron Holm(Executive Officer, Director, Promoter)

Co-investorsBuilding VenturesKnockout CapitalVU Venture PartnersKapor CapitalLAUNCHMotley Fool Ventures

Blueprint Powerblueprintpower.comAcquired

Turns buildings into power plants.

New York, US

Robyn Beavers(Executive Officer, Director)Jonathan Jaffe(Director)

Co-investorsCongruent VenturesFifth WallMetaProp VenturesMoxxie VenturesMetaPropTrust Ventures+1 more

Boweryboweryfarming.comDefunct

Bowery Farming uses controlled environment agriculture to grow fresh produce locally in urban centers.

AgTechFoodTechNew York, US

Irving Fain(CEO & Founder)inChristopher Livingston(Executive Officer)Darren Thompson(Executive Officer)in

BoardAndy Wheeler(Director)Sara Robling(Director)Hans Tung(Director)in

Co-investorsEvolution VC PartnersHomebrewRed Swan VenturesRRE VenturesSand Hill AngelsSV Angel+10 more

Builders Patchbuilderspatch.comin𝕏

Builders Patch is a software platform for managing the multifamily housing finance process, covering deal application intake, document organization, due diligence, in-context communication among deal parties, AI-generated deal documents and reports, and asset management.

FintechPropTechSaaSMount Kisco, US

Kanan Ajmera(Founder)

Co-investorsThe Artemis FundUrban InnovationTenOneTen Ventures

BuildStreambuildstream.coin𝕏Defunct

BuildStream provides candidate sourcing and data research services for recruiting teams, using multiple data sources and manual verification to compile verified contact lists that reduce reliance on multiple software tools.

Construction TechFintechHR TechMarketplacesPropTechLondon, GB

Terry Clarke(Founder)inDavid Polonski(Founder)in

Co-investorsY CombinatorVentureSouq

Bumblebeebumblebeespaces.comin

Robotics furniture startup designed to change the way of living.

Co-investorsCanaan PartnersLoup VenturesUpHonest CapitalVU Venture PartnersBloomberg BetaIIMA Ventures+3 more

ChargeLab +Morechargelab.coin𝕏

ChargeLab develops EV charging management software and a programmable charging platform used by EV drivers, installers, and software developers.

EnergyMobility & TransportationSaaSEtobicoke, CA

Zak Lefevre(Cofounder)Zak L.(Founder)in

Co-investorsConstruct CapitalCreative Destruction Lab (CDL)Expansion Venture CapitalKing River CapitalMaple VCNotation Capital+4 more

Covetoolcovetool.comin𝕏

cove is an architecture firm that uses proprietary AI—drawing on a database of building codes, FEMA data, and cost analytics—to help real estate developers and owners with conceptual design, site master planning, permitting, code compliance, and cost estimating.

AI & Machine LearningConstruction TechPropTech

Sandeep Ahuja(Co-founder)Patrick Chopson(Co-founder)

Cyclecycle.ecoin𝕏

Cycle.eco builds emission-free local transportation solutions for urban areas, focusing on decarbonizing city transport and replacing polluting vehicles and congestion.

Circular EconomyClimate TechLogistics & Supply ChainMobility & TransportationBerlin, DE

Luis Orsini-Rosenberg(Founder)in

Co-investorsHeartfelt CapitalTechstarsVisionaries Club

Domatic +Moredomatic.ioin

Domatic provides a distributed control system that powers and communicates with building fixtures including lighting, ventilation, sensors, and HVAC elements through a shared low-voltage bus architecture.

Construction TechHardwareIoTPropTech

Co-investorsBrick Mortar VenturesCatapult Ventures

Dorothyhidorothy.com

Dorothy is a real-time weather and incident intelligence platform that tracks storms and other hazards and enriches affected addresses with property data, imagery, and loss history.

Climate TechData & InfrastructureInsurTech

Co-investorsKeiki CapitalKnoll VenturesMission One CapitalPortfoliaStellifiIndicator Ventures+1 more

Earth Force Technologiesearthforce.ioinNov 2022

EarthForce develops software and precision sensing technology to optimize wildfire prevention through fuel treatments at landscape scale.

AgTechClimate TechSaaS

Co-investorsAlleyCorpAmerican Family VenturesBold Capital PartnersClocktower VenturesKeiki CapitalZORA+2 more

EVAeva.xyzin𝕏

EVA builds autonomous systems infrastructure for drones and robots serving multiple industries including logistics, energy, healthcare, agriculture, and security.

AI & Machine LearningLogistics & Supply ChainRoboticsMazamet, FR

Co-investorsTechstarsFullCircle

EVOLOHevoloh.comin

Evoloh operates high-throughput factories that manufacture electrolyzer stacks, sold as its Nautilus stack module to EPCs and project developers building hydrogen plants.

Advanced ManufacturingCleantechEnergy

Jimmy Rojas(Founder)

Co-investorsBaruch Future VenturesJuniperSafar PartnersThe Engine Ventures

Fire Domefire-dome.comin

FireDome offers an autonomous wildfire defense system that combines an AI-guided launcher, eco-friendly fire-retardant smart capsules, and thermal and visual sensors to detect, suppress, and create protective firebreaks around properties.

AI & Machine LearningClimate TechHardware

Co-investorsATOORO FUNDCaesar Ventures

Firmusfirmus.aiin𝕏

Firmus applies proprietary AI algorithms to analyze PDF drawing sets and identify design-related risks during the pre-construction phase.

AI & Machine LearningConstruction TechSaaS

Co-investorsfresh.fundNavitas CapitalPi LabsBlackstoneNVIDIA

Flair +Moreflair.coin𝕏

Flair makes smart vents, pucks, and controls along with its hvacOS software platform to manage home heating and cooling on a room-by-room basis, including for central HVAC systems, mini-splits, window ACs, boilers, and electric baseboards.

CleantechHardwareIoTSan Francisco, US

Kenny Tay(Founder)in

Co-investorsSkyview Ventures

Gisualgisual.comin

Gisual uses data intelligence to diagnose network device issues for telecommunications companies, helping them reduce repair time and improve first-contact resolution during outages and disasters.

Data & InfrastructureEnergyEnterprise SoftwareSaaSPhiladelphia, US

Co-investorsInvariantes Fund

Gradientgradientcomfort.comin𝕏

Gradient manufactures a window-mounted 120V heat pump for residential heating and cooling that installs without drilling or refrigerant handling.

CleantechClimate TechHardwarePropTechSan Francisco, US

Vince Romanin(Founder)in

Co-investorsAt One VenturesAzolla VenturesClimate InvestmentISVNew Climate VenturesSafar Partners+1 more

Greenqgreenq.gqin

Greenq is a Brazilian company that builds waste collection tracking technology for municipal services.

Climate Tech

Edy CandelinMoshe PeleginShlomy Ashkenazy

Co-investors500 GlobalFusion VC

HAAS Alerthaasalert.comin𝕏

HAAS Alert operates a vehicle-to-everything (V2X) platform that delivers real-time safety alerts to drivers about roadway hazards, emergency vehicles, and roadside workers.

AI & Machine LearningIoTLogistics & Supply ChainMobility & TransportationSaaSChicago, US

Cory Hohs(Co-founder & CEO)inNoah Levens(Co-founder)inJigar Patel(Co-founder)in

Co-investorsDoon CapitalMichigan Capital NetworkStacked CapitalTechstarsThree Tree VenturesVolition Capital+3 more

Joinborrowjoinborrow.comin

Borrow offers short-term subscription services for all-electric vehicles to customers seeking affordable mobility without long-term commitments.

ConsumerMarketplacesMobility & TransportationWest Hollywood, US

Jon Alain Guzik(Co-founder)Rodrigo de Guzman(Co-founder)

Kelvin Systems, Inc.kel.vinin

Kelvin builds products to modernize legacy radiator-heated buildings, including a smart radiator cover (the Cozy) and an Adaptive Electrification platform that replaces window ACs with smart heat pumps.

CleantechEnergyPropTech

Co-investorsCarbonDorm RoomMetaPropMetaProp VenturesPartnership Fund for NYCRed Bear Ventures

Kiftkift.com

Kift was a service focused on dynamic communal living centered around van life and shared houses/caravans, aimed at building community for people seeking an alternative lifestyle.

ConsumerSocial

Kiwikiwi.kiin

KIWI Buzz is a video intercom feature that allows building managers to grant access to unregistered visitors by scanning a QR code with a smartphone, without requiring app installation or prior account setup.

HardwareIoTPropTech

Kiwi Campuskiwibot.comin𝕏Oct 2021

Kiwibot develops autonomous delivery robots that operate across multiple countries and continents.

HardwareLogistics & Supply ChainRoboticsMiami, US

Sergio Pachon(Executive Officer, Director)inAndres Felipe Chavez(Executive Officer, Director)Andres Felipe Chavez Cortes(Executive Officer, Director)Eduardo Iniguez(Executive Officer)inJudah Longgrear(Executive Officer, Director)

BoardJoseph Huang(Director)

Co-investorsClub Italia Investimenti 2Innosphere VenturesKarma VenturesMAGIC FundPi CampusTYLT Ventures

Limeloopthelimeloop.cominDec 2018

LimeLoop provides premium reusable shipping mailers that replace single-use cardboard boxes and return automatically to the merchant for reuse up to 20+ times.

Circular EconomyE-commerceLogistics & Supply ChainEmeryville, US

Ashley Etling(Executive Officer)in

Co-investorsCity LightJohnson Venture PartnersKnockout CapitalREFASHIOND VenturesSilicon Road Ventures

Livestorieslivestories.com

FORWARD is a program administration platform for governments and nonprofits that combines resident access, intake, eligibility, payments, participant engagement, and outcome reporting into one audit-ready system.

GovTechImpact & Social GoodSaaS

Loamistloamist.cominFeb 2024

Loamist automates the examination of trade finance documents against letter of credit terms using AI, detecting discrepancies in real time for exporters, importers, and trade finance banks.

AI & Machine LearningEnterprise SoftwareFintechLogistics & Supply Chain

Pete Christensen(Founder & CEO)inAndy Miller(Co-founder & VP Engineering)in

Co-investorsVoLo Earth VenturesWovenEarth

Logchecklogcheck.comin

LogCheck is a mobile tool for commercial real estate building maintenance staff to track routine inspections, preventive maintenance tasks, and meter readings in the field.

PropTechSaaS

Co-investorsContour Venture PartnersMetaProp VenturesMetaProp

Loopridewithloop.comin𝕏

LOOP provides car insurance aimed at underserved and working-class communities, using a pricing model that excludes credit score, education, and occupation from rate calculations.

FintechImpact & Social GoodInsurTech

Carey Anne Nadeau(Co-Founder & Co-CEO)in

Co-investorsBackstage CapitalFoundryNew Voices

Lunewave Inc.lunewave.comin𝕏

Lunewave develops cutting-edge antenna and sensor technology for automotive advanced driver assistance systems, autonomous vehicles, wireless communications, robotics, and drones.

AI & Machine LearningHardware

John Xinin

Co-investorsblue 9 capitalBMW i VenturesFoothill VenturesFraser McCombs CapitalProeza VenturesIntact Ventures+1 more

Mark43mark43.comin𝕏

Mark43 creates software for public safety and law enforcement agencies.

AI & Machine LearningEnterprise SoftwareGovTechSaaSNew York, US

Scott Crouch(Co-Founder & Chairman)inMatt Polega(Co-Founder, President, Managing Director UK and Head of Marketing, Communications & Enablement)inFlorian Mayr(Co-Founder & Vice President)in

BoardLarry Bohn(Director)inAlex Finkelstein(Director)inEdward Davis(Director)

Co-investorsAmplo VenturesAvenir Growth CapitalBreyer CapitalEQUIAMGovtech FundPROOF+4 more

Merinoenergymerinoenergy.comin

Merino Energy manufactures heat pump systems for residential buildings, offering the Mono model for single-family homes and condos and the Alpha model for multi-family buildings.

CleantechEnergyHardwareSan Francisco, US

Mary-AnnBrad

Co-investorsDangerous Ventures

Metalmarkmetalmark.xyzin𝕏

Metalmark provides a platform that integrates building measurement, spatial mapping, and AI-enabled analysis to help facility and operations teams identify indoor environmental health risks and guide resource allocation and response verification.

AI & Machine LearningCleantechEnterprise SoftwareHardwareHealthtechIoTPropTech

Milesgetmiles.com

Redwood City, US

Jigar Shah(Founder)in

Co-investorsSony Ventures CorporationSynapse PartnersTransLink Capital

Millmill.comin

Mill makes an electric food waste recycler for homes that reduces food scraps by 80% and converts them into nutrient-rich grounds for gardens or farms.

Climate TechConsumerHardwareSan Bruno, US

Harry Tannenbaum(Founder)inMatthew Rogers(Founder)in

Co-investorsBreakthrough Energy VenturesBuckhill CapitalCleo CapitalEnergy Impact PartnersGigascale CapitalGV (Google Ventures)+7 more

Near Space Labsnearspacelabs.cominAug 2020

Near Space Labs provides high-resolution 7cm geospatial imagery captured from stratospheric altitudes, serving government, utilities, insurance, and environmental monitoring applications with frequent data refresh cycles and wide-scale coverage.

Climate TechData & InfrastructureSpace TechBrooklyn, US

Rema Matevosyan(Founder & CEO)inHripsime Matevosyan(Executive Officer, Director)Albert Caubet Domingo(Director)

Co-investorsAt One VenturesBlackhorn VenturesBold Capital PartnersCrosslink CapitalDraper AssociatesGreen Egg Ventures+7 more

Nevoyanevoya.com

Nevoya is a fully-electric trucking carrier that moves freight for shippers and third-party logistics providers, combining zero-emission vehicles with AI-driven operations.

CleantechClimate TechLogistics & Supply ChainMobility & TransportationColton, US

Sami Khan(Executive Officer, Director)inThomas Atwood(Founder)in

BoardJohn Verdon(Director)inTom Atwood(Director)in

Co-investorsCool Climate CollectiveFloating PointKeiki CapitalLMNT VenturesLOWERCARBONLowercarbon Capital+4 more

OneConcernoneconcern.comin𝕏

One Concern provides a data platform that quantifies physical climate risk and translates it into financial risk metrics, differentiating properties and businesses by their exposure to infrastructure-related business interruptions such as power outages and supply chain disruptions.

AI & Machine LearningClimate TechInsurTechMenlo Park, US

Nicole Hu(Founder)

Co-investorsAmerican Family Insurance Institute for Corporate and Social ImpactAmplo VenturesGeodesic CapitalSozo Ventures

Oneroofapponeroofapp.com

New York City, US

Nikos Georgantas(Founder)

Co-investorsHelm

Onewheelonewheel.com

Onewheel designs and manufactures electric self-balancing vehicles that allow riders to experience a sensation similar to snowboarding during commutes and recreation.

ConsumerDirect to ConsumerHardwareMobility & TransportationSan Jose, US

Kyle Doerksen(Founder, CEO)

Pallonpallon.comin

Pallon provides a platform for condition assessment and data management in sewer rehabilitation projects, serving engineering companies.

AI & Machine LearningCleantechClimate TechConstruction TechData & InfrastructureImpact & Social GoodSaaSZurich, CH

Co-investors360 Capital

Partsimonypartsimony.comin𝕏

Partsimony provides an intelligent supply chain platform that helps hardware companies manage distributed manufacturer networks through data-driven insights and customizable supply chain management tools.

Advanced ManufacturingAI & Machine LearningCleantechFintechHardwareBrooklyn, US

Richard Mokuolu(Founder)in

Co-investorsContour Venture PartnersTechstarsClosed Loop PartnersREFASHIOND Ventures

Perl Streetperlstreet.comin𝕏

Perl Street provides financial infrastructure and software for renewable energy investors and developers to manage capital deployment, compliance, and operations related to clean energy projects, particularly those funded through the Greenhouse Gas Reduction Fund.

B2B MarketplacesCleantechClimate TechFintechSaaSAustin, US

Tooraj Arvajeh(Founder)inArvind Vermani(Founder)in

Co-investorsFourth RealmGarage CapitalKeiki CapitalMS&AD VenturesY CombinatorClimate Capital

Phuclabsphuclabs.com

Personal site of Trương Vĩnh Phúc (Phuc Vinh Truong), publishing essays and books on his "Information Force Theory," covering physics, mathematics, AI safety, and philosophy.

AI & Machine LearningMedia & Entertainment

Trương Vĩnh Phúc(Founder)

Co-investorsJuniperAiSprouts VC

Pi Litpi-lit.comin𝕏

Pi-lit manufactures smart lighting and alerting products for roadside safety and emergency response, serving first responders, traffic management, and transportation sectors.

HardwareIoTLogistics & Supply ChainMobility & TransportationSaaSOrange County, US

Plentify +Moreplentify.ioin

Plentify makes intelligent controllers for home energy systems: HotBot manages geysers to reduce electricity use and detect leaks, while SolarBot optimizes solar and battery systems for greater self-consumption.

CleantechEnergyIoTCape Town, ZA

Jon Kornik(Founder)

Co-investorsE3 CapitalElevation VenturesSatgana

Poweredbywildpoweredbywild.comin

Wild makes an electric powertrain kit—comprising a Power Box, Smart Hitch, 120 kW motor, and bi-directional battery—that trailer manufacturers integrate into their products to create self-propelled, connected trailers with reduced tow-vehicle load.

CleantechHardwareMobility & Transportation

Qucitqucit.comin

Qucit Bike is a software platform that optimizes operations for shared micro-mobility systems (bike-sharing and scooter-sharing) by automating fleet rebalancing, maintenance scheduling, and battery management.

Climate TechLogistics & Supply ChainMobility & TransportationSaaSBordeaux, FR

Raphaël Cherrier(CEO)inHassène Ben Salem(CTO)in

Rachiorachio.comin𝕏Nov 2015

Rachio makes smart irrigation controllers that automatically adjust watering based on weather, season, and local conditions to reduce outdoor water waste for residential properties.

Climate TechConsumerHardwareIoTDenver, US

Franz Garsombke(Executive Officer, Director, Promoter)inChris Klein(Executive Officer, Director, Promoter)inMatt ReismanGary Stone(Executive Officer)in

BoardRobert Hawk(Director)Jonathan Hallett(Director)

Co-investors500 GlobalArborview CapitalBLH Venture Partners, LLCEastside PartnerseLab VenturesMetaProp+4 more

Radiator Labsradiatorlabs.comin

Brooklyn, US

Marshall Cox(Executive Officer, Director, Promoter)in

BoardDavid Yeskel(Director)Shaun Abrahamson(Director)inIoannis Kymissis(Director)

Co-investorsDorm Room

Renewell Energy +Morerenewellenergy.comin

Renewell Energy develops equipment and systems for the energy transition, focusing on decarbonizing the electrical grid.

Circular EconomyCleantechClimate TechDeep TechEnergyDenver, US

Kemp Gregory(CEO and Co-founder)Walker Colt(Co-Founder)Stefan Streckfus(CTO)

Other

Tracked investments with no reachable website or further public details — typically companies that wound down, renamed, or were absorbed.

→ Pre-seed→ Series B/CAffordable Clean EnergyAllAvvirClean Air, Water, and FoodClearroadClimate ActionClimatebaseConnected Transportation & LogisticsCoordDutchlionagEvolve Energy +MoreFocal +MoreIndustry, Innovation & InfrastructureMobilyze +MoreOoneepodResponsible Consumption & ProductionSustainable Cities & CommunitiesSystems Evolution

Exits · 4

4 acquisitions · showing 1

SeamlessDocsacq. by Kofile

Portfolio news

latest coverage across their companies

Frequently asked questions

How many investments has Third Sphere made?
Third Sphere has 109 tracked investments, 4 of which have exited.
What stage does Third Sphere invest at?
Third Sphere invests at the Pre-Seed, Seed, Series A stages.
What is Third Sphere's typical check size?
Third Sphere typically writes checks of $250K – $1M.
What sectors does Third Sphere focus on?
Third Sphere focuses on AI & Machine Learning, Circular Economy, Cleantech, Climate Tech, Energy, Hardware, Impact & Social Good, Logistics & Supply Chain, Mobility & Transportation, Sector Agnostic.
Where is Third Sphere located?
Third Sphere is headquartered in New York, US.
Does Third Sphere lead rounds?
Third Sphere typically participates in rounds rather than leading them.
Who does Third Sphere co-invest with?
Third Sphere most often shares deals with MetaProp Ventures, Safar Partners, 645 Ventures, among 50 tracked co-investors.

Media · Podcasts & interviews

featuring the team

#176 Green Premium, Price of Inaction, Big Oil, EV Demand, & More w/ Shaun Abrahamson (Third Sphere)

CleanTechies · Shaun Abrahamson

#136 The Climate Data Moat, Escalator of Impact and Scale, & More w/ Shaun Abrahamson (Third Sphere)

Silas Mähner · Shaun Abrahamson

Co-investors · 22

Root Ventures Manager, Llc

Root Ventures is a San Francisco-based deep tech seed fund led by engineers, focusing on leading initial funding rounds for founders pursuing new technical opportunities.

$3M – $5M
Blackhorn Ventures

Blackhorn Ventures is a venture capital firm backing startups that apply data, AI, and robotics to major industries considered vital to national security and economic stability.

$500K
Clocktower Ventures

Clocktower Ventures is the fintech-focused venture practice of Clocktower Group, backing technology companies transforming financial services across consumer and enterprise. It is based in Santa Monica, California.

$100K – $20M
Contour Venture Partners

Contour Venture Partners is a New York City-based seed stage venture capital firm founded in 2005, focused on the NYC technology ecosystem.

Both backed · 2
$500K – $2M
Bold Capital Partners

Bold Capital Partners is a venture capital firm based in Los Angeles, California. Its portfolio includes companies such as Insilico Medicine, which applies artificial intelligence to biomarker development and drug discovery, reflecting a focus on frontier technologies in areas like AI-driven life sciences.

Govtech Fund

Govtech Fund is a venture capital firm that invests in startups modernizing the operations of government.

Both backed · 2
UpHonest Capital

UpHonest Capital is a Silicon Valley-based investment firm founded in 2017 that supports cross-border entrepreneurship and investment between China and the United States, and runs media, scout, and incubation programs.

Both backed · 1
$50K – $1M
Inovia Capital

Inovia Capital is a full-stack venture capital firm based in Canada with a presence in the EU, partnering with founders to build global technology companies.

Both backed · 1
$250K – $8M
AlleyCorp

AlleyCorp is an early-stage investor and incubator based in New York that builds and backs companies across enterprise, consumer, healthcare, and deep tech sectors.

$1M – $5M
Construct Capital

Construct Capital is an early-stage venture capital firm backing founders rebuilding foundational industries such as manufacturing, logistics, defense, and energy.

Both backed · 1
$2M – $6M
Notation Capital

Notation Capital writes the very first check for technical founding teams at the moment of company creation, treating pre-seed as a distinct risk profile and working "in the trenches" with founders on "day 0:00" rather than just writing smaller checks. The firm operates with unusual transparency by publishing its internal operating manual on GitHub and running a podcast that interviews LPs to demystify venture fund underwriting, while also running a free, equity-free program for future founders in underestimated ecosystems beyond Silicon Valley.

Both backed · 1
$400K – $750K
Highline Beta

Highline Beta is a venture studio and venture capital firm that co-creates new ventures with corporate partners and co-invests alongside founders. It helps enterprises design, launch, and run corporate venture studios and build new ventures from idea to launch.

Both backed · 1
10 more co-investors

Closed Loop PartnersClimentum CapitalKrakenTrue VenturesSOSVStellar CapitalSocial LeverageGiant Ventures Global LlpStealth CapitalNCT Ventures

Firms observed investing alongside Third Sphere, from public investor directories. Shared companies are the overlap with Third Sphere's recorded portfolio.

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