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Third Sphere — Portfolio, Page 3

Investor actively backing innovative startups and growth-stage companies across various industries and funding rounds.

99
Companies
$589.1M
Total invested
$7.1M
Avg. check
69
Industries
Software 8Artificial Intelligence (AI) 4Energy Management 4Internet of Things 4Energy 4Electric Vehicle 4+63 more
Founder contacts

Verified emails & LinkedIn for founders across this portfolio.

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Portfolio companies

Showing 4972 of 99
Sonic Fire Tech
October 2025

Sonic Fire Tech pioneers infrasound fire suppression, protecting homes and assets without collateral damage.

Home Improvement · Cleveland$3.5M Seed
Robot.com
October 2025

Robot.com develops and operates autonomous mobile robots designed to perform real-world tasks.

Artificial Intelligence (AI) · San Francisco$24.8M Venture - Series Unknown
Domatic
October 2022

Domatic provides power and data on a single wire pair to fixtures and sensors.

Construction · Palo Alto$4.0M Seed
Kelvin
October 2023

Kelvin is an energy management and electrification platform for radiator-heated buildings.

Energy Efficiency · BrooklynConvertible Note
Shellworks
March 2026

Shellworks is a biomaterials company that develops and manufactures materials that offers alternative to conventional plastics.

Biotechnology · London$15.0M Series A
Renewell Energy
November 2025

Oil wells that end well.

Energy · BakersfieldSeed
AccessGrid
October 2025

AccessGrid is an API platform that uses MIFARE technology to issue NFC credentials for mobile devices.

Developer APIs · Miami$4.4M Seed
Nevoya
July 2025

Nevoya is a totally electric truckload carrier dedicated to making zero-emission freight transport simple.

Electric Vehicle · Santa Monica$9.3M Seed
Sention Technologies
May 2025

Sention Technologies is a battery cell intelligence firm that uses advanced diagnostic techniques and machine learning.

Battery · London$5.0M Seed
Near Space Labs
April 2025

Near Space Labs provides aerial imagery using zero-emission balloons to support mapping, urban planning, and environmental monitoring.

Aerospace · Brooklyn$20.0M Series B
Dorothy
April 2025

Dorothy uses data and AI to quickly identify storm-damaged properties

Apps · New York$650K Undisclosed
3AM Innovations
February 2025

3AM provides a FLORIAN Command Suite for every incident commander that connects devices from radio, LTE, and meshed IOT.

3D Technology · Buffalo$285K Convertible Note
Resonant Link
January 2025

Resonant Link delivers the world's fastest and easiest to use wireless charging for medical devices, consumer electronics, and EVs.

Advanced Materials · South Burlington$3.4M Series A
Flair
December 2024

Flair makes smart vents and wireless thermostats and advanced software for residential heating and cooling.

Energy Management · BerkeleySeries Unknown
FireDome
December 2024

FireDome offers a patent-pending unique wildfire defense technology.

Aerospace · Tel Aviv$3.0M Pre-Seed
SHYFT Power Solutions
November 2024

SHYFT Power Solutions builds IoT and integrated software to connect and intelligently manage distributed energy resources

Big Data · OaklandSeries Unknown
Urbint
October 2024

Urbint is an AI platform for identifying and mitigating threats to workers, critical infrastructure, and communities.

Artificial Intelligence (AI) · Miami Beach$35.0M Series C
Photon Marine
September 2024

Photon Marine is building the world’s most powerful and intelligent electric outboard motor system tailored to commercial boat fleets.

Clean Energy · PortlandGrant
Wright Electric
August 2024

Wright Electric is a leader in the future of sustainable, lower emissions air travel.

Aerospace · Albany$3.3M Grant
Loamist
February 2024

Loamist operates as a climate-tech startup.

Environmental Consulting · Berkeley$1.0M Pre-Seed
ChargeLab
February 2024

ChargeLab is the Android of EV charging. Our hardware-agnostic software runs on the world’s most popular EV chargers.

Automotive · Toronto$30.0M Series A
Builders Patch
January 2024

Builders Patch is an intuitive online tool built for property developers to manage their deals and raise construction finance.

Payments · New YorkSeed
HAAS Alert
January 2024

The HAAS Alert Safety Cloud® streams real-time road hazard information to connected and autonomous cars to make roads safer and smarter.

Autonomous Vehicles · ChicagoSeries Unknown
Urbio
August 2023

Urbio is a software that accelerates the transition of utilities towards clean energy.

Artificial Intelligence (AI) · SionGrant

Where Third Sphere invests

Software8
Artificial Intelligence (AI)4
Energy Management4
Internet of Things4
Energy4
Electric Vehicle4

About Third Sphere's portfolio

How many companies has Third Sphere invested in?

Third Sphere has invested in 99 companies tracked in our database. The portfolio spans multiple industries and funding stages, from seed-stage startups to late-stage companies.

What industries does Third Sphere invest in?

Third Sphere's top investment sectors include Software, Artificial Intelligence (AI), Energy Management, Internet of Things, Energy. The firm invests across 69 different industry categories.

What is Third Sphere's largest investment?

Among tracked funding rounds, Urbint received $35.0M in a Series C round. Third Sphere's total known invested capital is $589.1M.

What is the average investment size for Third Sphere?

Third Sphere's average investment size is $7.1M across its portfolio of 99 companies.

What are Third Sphere's most recent investments?

Recent Third Sphere portfolio additions include Sonic Fire Tech, Robot.com, Domatic, Kelvin, Shellworks. These companies were founded in 2020 or later.

Reach the founders behind these 99 companies
Verified emails and LinkedIn profiles, updated monthly.
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