About Propeller
Propeller is a venture capital firm founded in 2022. It is primarily based out of Boston, United States. As of Feb 2026, Propeller is an active investor, having invested in 14 companies, with 4 new investments in the last 12 months. It primarily invests in Seed round in United States based startups. Its investments are spread across a wide range of sectors from Enterprise Applications to Environment Tech and High Tech. Most recently it participated in the $***** Seed round of Phathom A lot of funds co-invest with Propeller, with names like Grantham Foundation sharing a substantial percentage of its portfolio. Propeller has team of 7 people including 4 partners.Key Metrics
Team Members
Portfolio Count
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Seed, Series A & 1 more
Portfolio Soonicorns
Deals in last 12 months
Propeller's List of Top Investments
Propeller has a portfolio of 14 companies. Their most notable investments are in SuperGround and Vema.Their portfolio spans across United States, United Kingdom, Finland and 1 more locations. They have invested in Enterprise Applications, Environment Tech, High Tech and 11 other sectors, across stages such as Seed, Series A and 1 more. Here is the list of top investments by Propeller:1. Clarity AI
Provider of AI-powered sustainability data and solutions. It offers tools for sustainability and compliance, covering climate scenario analysis, carbon footprint calculation, ESG risk assessment, and regulatory reporting. The platform integrates into existing workflows via API or web app, providing customizable solutions for various sustainability use cases. Its technology leverages machine learning to analyze extensive data points, ensuring reliable and transparent results. Methodologies are scientifically-based and supported by a team of sustainability and data science experts. The platform offers access to granular data and methodologies, enabling efficient assessment, analysis, and reporting on sustainability performance.
Key facts about Clarity AI
- Founded Year: 2017
- Location: New York City (United States)
- Valuation: $*****
- Stage: Series B
- Total Funding till date: $105M
- Employee Count: 354 as on May 31, 2026
- Investors: Fifth Wall, Seaya and 10 Others
- Latest Funding Round: Series B, Aug 20, 2021, $*****
- Highlight: Editors' Pick
2. Vema
Developer of engineered mineral hydrogen production technology. This technology stimulates naturally occurring subsurface reactions to create hydrogen in a controlled and scalable manner. The process utilizes catalysts and optimized field placement to achieve cost-effective hydrogen production. It offers a sustainable and environmentally friendly alternative to traditional hydrogen production methods. The technology is designed for predictable and adaptable hydrogen flows to meet market demands.
Key facts about Vema
- Founded Year: 2024
- Location: Wilmington (United States)
- Stage: Seed
- Total Funding till date: $13M
- Employee Count: 18 as on May 31, 2026
- Investors: Grantham Foundation, Pace Ventures and 3 Others
- Latest Funding Round: Seed, Feb 18, 2025, $*****
- Highlight: Editors' Pick
3. Vatn Systems
Developer of autonomous underwater vehicles. It also offers navigation software to control and manage the systems.
Key facts about Vatn Systems
- Founded Year: 2023
- Location: Portsmouth (United States)
- Stage: Series A
- Total Funding till date: $76.5M
- Employee Count: 74 as on May 31, 2026
- Investors: In-Q-Tel, Geodesic Capital and 21 Others
- Latest Funding Round: Series A, Dec 10, 2025, $*****
4. Blue Energy
Producer of nuclear energy. Company components are prefabricated in the shipyard environment before being transported to their final locations for assembly. Company builds plants in shipyards, which are centralized locations equipped with permanent workforces and automated machinery.
Key facts about Blue Energy
- Founded Year: 2023
- Location: Edinburgh (United Kingdom)
- Stage: Series B
- Total Funding till date: $425M
- Employee Count: 71 as on May 31, 2026
- Investors: Starlight Ventures, Angular Ventures and 6 Others
- Latest Funding Round: Series B, Apr 17, 2026, $*****
5. SuperGround
Industrial partner for food production company offering solutions. The company's food processing technology transforms devalued bones and hard tissues from fish and poultry into sustainable goods.
Key facts about SuperGround
- Founded Year: 2021
- Location: Helsinki (Finland)
- Stage: Seed
- Total Funding till date: $4.02M
- Employee Count: 14 as on May 31, 2026
- Investors: Propeller, Hatch Blue and 1 Other
- Latest Funding Round: Seed, Sep 04, 2025, $*****
Propeller's Year-on-Year Investment Trends
Propeller has invested in 14 companies over the last 3 years, with an average of 4 new investments annually in the last 3 years. In 2025, it made 6 investments, while as of Feb 2026, it has made 1 investment in this year. Its most recent first time investment was in Phathom and most recent follow-on round was in Vatn Systems.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 1 | 0 | 1 |
2025 | 5 | 1 | 6 |
2024 | 6 | 0 | 6 |
2023 | 1 | 0 | 1 |
Propeller's Investments by Stage
Propeller has made 9 investments in Seed stage with an average round size of $6.06M, 3 investments in Series A stage with an average round size of $19M and 1 investment in Series B stage with an average round size of $13.2M.Stage of entry | No. of Investments |
|---|---|
Seed | 9 |
Series A | 3 |
Series B | 1 |
Note: We have considered here, only first round of investments
Propeller's Investments by Sector
Propeller has a diverse portfolio, with companies operating in the Enterprise Applications, Environment, Environment Tech, High Tech and Sustainability Tech. Notably, it has invested in 10 Enterprise (B2B) companies, 9 Tech companies, 6 Software companies and at least 3 companies focusing on Saas.Sector | No. of Investments |
|---|---|
Enterprise Applications | 6 |
Environment | 3 |
Environment Tech | 3 |
High Tech | 3 |
Sustainability Tech | 3 |
Others | 13 |
Note: We have considered here, only first round of investments
Propeller's Investments by Geography
Propeller has made most investments in United States (8), followed by United Kingdom where it has made 2 investments.Country | No. of Investments |
|---|---|
United States | 8 |
United Kingdom | 2 |
Finland | 1 |
Saudi Arabia | 1 |
Note: We have considered here, only first round of investments
Propeller's recent investments
Propeller has made 1 investments in 2026 so far - Phathom.Here are the most recent investments by Propeller:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Feb 05, 2026 | United States | Seed | 8543 | ||
Dec 10, 2025 | United States | Series A | 5867 | ||
Sep 15, 2025 | - | Series B | 3101 | [+7] | |
Sep 04, 2025 | Finland | Seed | 2795 | [+1] | |
Jul 21, 2025 | United States | Seed | 7009 | [+8] |
Team profile of Propeller
Propeller has a team of 7 members including 4 Partners located in United States. Propeller's team does not sit on the board of any company as of now.Here is a list of all team members in Propeller:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Los Angeles | - | ||
Partner | New York City | - | - | |
Partner | Cambridge | - | ||
Partner | Boston | - | - |
Co-investors of Propeller
Over the past 3 years, 75 investors have co-invested in Propeller's portfolio companies. This includes funds and angels.
- Invested before Propeller: Hatch Blue, Middle East Venture Partners and 3 others have invested in rounds before Propeller. There is 1 company where Hatch Blue has invested before Propeller and 1 company where Middle East Venture Partners has invested before Propeller.
- Top Co-investors of Propeller: 60 investors entered a company along with Propeller. These include investors like Grantham Foundation (2 companies).
- Invested after Propeller: A total of 10 investors have invested in Propeller's portfolio after their investments. Top Investors include Bravo Victor Venture Capital (1 company), Hanwha (1 company) and Geodesic Capital (1 company).
Recent News related to Propeller
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pHathom Technologies Raises $4M in FundingFinSMEs•Feb 06, 2026•Carmeuse, Invest Nova Scotia, Propeller, New Brunswick Innovation Foundation and 1 other
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Ciphero Secures $2.5M to Develop AI-Native Security for Agentic WorkflowsAlleyWatch•Dec 18, 2025•Chingona Ventures, Sovereign's Capital, CIPHERO, BlueWing and 8 others
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Hanwha Group Invests in U.S. Underwater Drone DeveloperBusinesskorea•Dec 11, 2025•Hanwha, Bravo Victor Venture Capital, Lockheed Martin, Trousdale Ventures and 11 others
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Hanwha Aerospace signs a KRW 705.4 billion L-SAM mass production contract with the Defense Acquisition Program AdministrationKorea Newswire•Nov 28, 2025•Hanwha, LIG Nex1, Bravo Victor Venture Capital, Lockheed Martin and 12 others
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Clarity Secures $12M Funding to Expand AI Teams for Customer Experience PlatformMrWeb•Sep 16, 2025•Prosus, STV, Neo, Oraseya Capital and 8 others
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SuperGround Secures €3.65M & Ocean Next Partnership to Expand Alternative SeafoodThefishsite•Sep 04, 2025•SuperGround, Propeller, Hatch Blue, CHECK24
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Vema Hydrogen secures $13m to bring $1/kg hydrogen to market2 View•Feb 21, 2025•VEMA Solar, Grantham Foundation, Pace Ventures, Zero Carbon Capital and 2 others
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Vema Hydrogen Raises $13M in Seed FundingFinSMEs•Feb 18, 2025•Vema, Propeller, Pace Ventures, Extantia and 3 others
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This German e-fuel tech startup taps €2.3M funding to make green jet fuel a realityTech Funding News•Feb 12, 2025•Spark e-Fuels, Nucleus Capital, Zero Carbon Capital, IBB Ventures and 8 others
