Third Sphere
VC Fund
Brooklyn, United States
Third Sphere is a VC fund in Brooklyn focused on Software and Energy. Early-stage fund focused on rapid, scalable climate action and targeting outsized impact and outsized returns.
- Total investments:
- 208
- Last investment:
- Lead investor:
- 9%
- Fund size:
- $9.9M
- Last fund:
Last updated:
For AI agents: llms.txt
Industries Third Sphere invests in
Stages Third Sphere invests in
Countries Third Sphere invests in
Round sizes
Contacts
| Name | Phone | Socials | |
|---|---|---|---|
| See all 6 contacts → | |||
Round size
- Seed
- $100k–$7.5M
- Pre-Seed
- $150k–$3M
- Convertible Note
- $125k–$1.2M
Investment Focus
Industry
- Software 29 (14%)
- Energy 13 (6%)
- Real Estate 13 (6%)
- Transportation 13 (6%)
- Internet of Things 13 (6%)
Stage
- Seed 67 (32%)
- Pre-Seed 41 (20%)
- Convertible Note 20 (10%)
- Series A 19 (9%)
- Series B 5 (2%)
Country
- United States 102 (49%)
- United Kingdom 3 (1%)
- Israel 2 (1%)
- Germany 2 (1%)
- Switzerland 2 (1%)
Team
| Name | Title | Investments | Links | |
|---|---|---|---|---|
Shaun Abrahamson
Co-Founder
|
Co-Founder | Total investments: 70 | Find email | |
Shilpi Kumar
Partner
|
Partner | Total investments: 5 | Find email | |
Yana Andrea Klimova
Chief Financial Officer
|
Chief Financial Officer | Total investments: 0 | Find email | |
Zeev Krieger
Partner
|
Partner | Total investments: 0 | Find email | |
Anthony Millin
Venture Partner
|
Venture Partner | Total investments: 0 | Find email | |
| See all 6 team members → | ||||
Investments
| Company | Description | Round | Links |
|---|---|---|---|
Shellworks
|
Shellworks is a biomaterials company that develops and manufactures a bio-based material that offers a sustainable alternative to conventional plastics. The company’s technology converts natural raw materials into polymers that can be used in packaging, consumer goods, and other applications where traditional plastics are commonly employed. Vivomeris engineered to provide similar functional properties as conventional plastics while offering improved environmental performance through biodegradability or compostability. Shellworks focuses on integrating its materials into manufacturing processes, collaborating with companies seeking to reduce plastic waste and transition to renewable, circular solutions. Through its research, development, and production of bio-based polymers, the company aims to enable practical, eco-friendly material alternatives across multiple industries. | $15M / Series A / Mar 04, 2026 | |
Merino Energy
|
Merino Energy is a home energy company that focuses on electrifying home heating & cooling. | Pre-Seed / Jan 01, 2026 | |
Forest3 AI
|
Forest3 manufactures semi-autonomous forestry equipment that intends to improve forest management productivity. | Pre-Seed / Jan 01, 2026 | |
AccessGrid
|
AccessGrid is an API platform that uses MIFARE technology to issue NFC credentials for mobile devices. It is specifically compatible with the market's existing DESFire-capable NFC readers. | $4.4M / Seed / Oct 28, 2025 | |
Sonic Fire Tech
|
Sonic Fire Tech pioneers infrasound fire suppression, protecting homes and assets without collateral damage. | $3.5M / Seed / Oct 06, 2025 | |
Nevoya
|
Nevoya's focus on zero-emission freight transport is a significant step toward sustainability in the logistics industry. Nevoya is an electric truckload carriers can help reduce the carbon footprint of shipping while also potentially lowering operational costs in the long run. | $9.3M / Seed / Jul 22, 2025 | |
Sention Technologies
|
Sention Technologies is a battery cell intelligence firm that uses advanced diagnostic techniques and machine learning to maximize the performance of a battery at any stage of its life. | $5M / Seed / May 21, 2025 | |
Near Space Labs
|
Near Space Labs is an aerial imagery and earth observation company, Near Space Labs' imagery makes it easy to monitor assets and gain remote access over broad or specific areas. Near Space Labs offers cloud-based delivery of fully processed images through its API. The company provides frictionless, affordable imaging for insurance, utilities,infrastructure, conservation, smart cities, retail, energy, government, and disaster response. | $20M / Series B / Apr 29, 2025 | |
Swellcycle
|
Swellcycle manufactures board cores, artboards, and 3D printed sculptures. | $1M / Pre-Seed / Feb 26, 2025 | |
Resonant Link
|
Resonant Link delivers 5x faster and highly efficient wireless power for applications big to small, from massive industrial trucks to medical devices smaller than a fingernail. Resonant Link’s mission is to provide fast, safe, and reliable wireless power to help people, businesses, and the planet thrive. | $3.4M / Series A / Jan 28, 2025 | |
| See all 208 investments → | |||
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FAQ
What does Third Sphere invest in?
Third Sphere invests primarily in Software, Energy and Real Estate startups, most often at Seed and Pre-Seed stage. Most of the 208 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.
What is Third Sphere's check size?
Third Sphere typically joins rounds of $100k–$7.5M at Seed, $150k–$3M at Pre-Seed and $125k–$1.2M at Convertible Note. These ranges are 10th–90th percentile round sizes calculated from confirmed public funding rounds, so they are a realistic guide to the rounds Third Sphere participates in.
How do I contact Third Sphere?
Public channels for Third Sphere include LinkedIn, X (Twitter) and the website linked on this profile. For a verified work email and phone number, create a free Shizune account — contact data is searched across 20+ sources and validated before delivery, so your outreach lands in the right inbox.
Who are the partners at Third Sphere?
The team at Third Sphere includes Shaun Abrahamson (Co-Founder), Shilpi Kumar (Partner) and Yana Andrea Klimova (Chief Financial Officer), among 6 team members tracked by Shizune. The Team section lists each member with their title, investment count and links.
Is Shizune's investor data accurate?
Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Sep 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.
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