About SeaAhead
SeaAhead is a venture capital firm founded in 2018. It is primarily based out of Providence, United States. As of Apr 2025, SeaAhead has invested in 54 companies. It primarily invests in Seed round in United States based startups. Its investments are spread across a wide range of sectors from Food and Agriculture Tech to Enterprise Applications and High Tech. Most recently it participated in the $***** Series A round of CSignum Overall, SeaAhead portfolio has seen 3 acquisitions, namely Dive Technologies, Spoolify and CSignum. A lot of funds co-invest with SeaAhead, with names like The Yield Lab sharing a substantial percentage of its portfolio. SeaAhead has team of 26 people including 4 partners.Key Metrics
Team Members
Portfolio Count
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Seed & Series A
Portfolio Acquisitions
SeaAhead's List of Top Investments
SeaAhead has a portfolio of 54 companies. Their most notable investmentis in Wittaya AquaTheir portfolio spans across United States, Canada, United Kingdom and 4 more locations. They have invested in Food and Agriculture Tech, Enterprise Applications, High Tech and 20 other sectors, across stages such as Seed, Series A stages. Here is the list of top investments by SeaAhead:
1. Sway
Manufacturer of seaweed-based materials as compostable replacements for plastic packaging. The company utilizes natural polymers found in seaweed to create alternatives to traditional plastic. Its product portfolio includes polybags, die cut handle bags, and seaweed windows. The materials are designed to be compostable and support a circular economy.
Key facts about Sway
- Founded Year: 2020
- Location: Carmel Valley (United States)
- Stage: Seed
- Total Funding till date: $14.5M
- Employee Count: 27 as on Jun 30, 2026
- Investors: Valor Equity Partners, Designer Fund and 19 Others
- Latest Funding Round: Grant (prize money), Nov 29, 2024, $*****
2. ThayerMahan
Provider of autonomous maritime surveillance solutions. It offers systems for undersea and anti-submarine warfare, maritime border and critical infrastructure security, and whale monitoring for vessel transit. Services also include offshore support, subsea infrastructure monitoring, and acoustic sciences. The company develops and deploys these solutions, providing tailored Search-as-a-Service offerings to meet diverse customer needs. Its approach emphasizes agile development and rapid deployment of AI-driven data platforms connected to autonomous systems.
Key facts about ThayerMahan
- Founded Year: 2015
- Location: Groton (United States)
- Stage: Series C
- Total Funding till date: $83M
- Employee Count: 127 as on Jun 30, 2026
- Investors: AE Industrial Partners, I Squared and 10 Others
- Latest Funding Round: Series C, Nov 27, 2023, $*****
3. Terradepth
Provider of autonomous subsea intelligence platform delivering actionable ocean data. The platform facilitates data collection, processing, integration, and action across missions and organizations. It offers a maritime autonomy stack enabling interoperability across autonomous systems. The platform supports command and control, infrastructure monitoring, stakeholder collaboration, resource mapping, and threat detection. It integrates data from various sources, including autonomous underwater vehicles, sensors, and public datasets.
Key facts about Terradepth
- Founded Year: 2018
- Location: Austin (United States)
- Stage: Series B
- Total Funding till date: $28M
- Employee Count: 50 as on Jun 30, 2026
- Investors: Alumni Ventures, Giant Ventures and 4 Others
- Latest Funding Round: Grant (prize money), May 09, 2022, $*****
- Highlight: Editors' Pick
Provider of packaging sustainability and compliance solutions. The company offers a platform for consumer companies. It enables brands to measure their plastic footprint and recover plastic waste. The platform helps brands achieve compliance outcomes through data management and regulatory expertise.
Key facts about rePurpose Global
- Founded Year: 2016
- Location: New York City (United States)
- Annual Revenue: ₹10 - ₹50 Cr as on Mar 31, 2025
- Stage: Funding Raised
- Employee Count: 17 as on Aug 31, 2025
- Investors: Pear VC, Third Derivative and 5 Others
- Highlight: Editors' Pick
5. ARC Marine
Key facts about ARC Marine
- Founded Year: 2015
- Location: Brixham (United Kingdom)
- Stage: Seed
- Total Funding till date: $2.69M
- Employee Count: 28 as on Jun 30, 2026
- Investors: The FSE Group, CIOSIF and 4 Others
- Latest Funding Round: Seed, Nov 22, 2021, $*****
SeaAhead's Year-on-Year Investment Trends
SeaAhead has invested in 54 companies over the last 6 years, with an average of 1 new investment annually in the last 5 years. In 2025, it made 1 investment. Its most recent first time investment was in CSignum.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 0 | 0 | 0 |
2025 | 1 | 0 | 1 |
2024 | 1 | 0 | 1 |
2023 | 1 | 0 | 1 |
2022 | 2 | 0 | 2 |
2021 | 0 | 0 | 0 |
2020 | 2 | 0 | 2 |
SeaAhead's Investments by Stage
SeaAhead has made 5 investments in Seed stage with an average round size of $2.42M and 2 investments in Series A stage with an average round size of $8.66M.Stage of entry | No. of Investments |
|---|---|
Seed | 5 |
Series A | 2 |
Note: We have considered here, only first round of investments
SeaAhead's Investments by Sector
SeaAhead has a diverse portfolio, with companies operating in the Food and Agriculture Tech, Enterprise Applications, Food and Agriculture, High Tech and Sustainability Tech. Notably, it has invested in 41 Enterprise (B2B) companies, 40 Tech companies, 20 Software companies and at least 14 companies focusing on Tech hardware.Sector | No. of Investments |
|---|---|
Food and Agriculture Tech | 4 |
Enterprise Applications | 3 |
Food and Agriculture | 2 |
High Tech | 2 |
Sustainability Tech | 2 |
Others | 5 |
Note: We have considered here, only first round of investments
SeaAhead's Investments by Geography
SeaAhead has made most investments in United States (3), followed by Canada where it has made 1 investment.Country | No. of Investments |
|---|---|
United States | 3 |
Canada | 1 |
Ireland | 1 |
Switzerland | 1 |
United Kingdom | 1 |
Note: We have considered here, only first round of investments
SeaAhead's recent investments
SeaAhead has not made any investment in 2026 so far.Here are the most recent investments by SeaAhead:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Apr 22, 2025 | United Kingdom | Series A | 8929 | [+5] | |
Jul 16, 2024 | Canada | Seed | 3779 | [+3] | |
Feb 16, 2023 | United States | Seed | 2600 | [+3] | |
Sep 08, 2022 | Switzerland | Seed | 7864 | [+2] | |
Aug 30, 2022 | Ireland | Seed | 6525 | [+2] |
Acquired companies in SeaAhead's Portfolio
3 companies from SeaAhead's portfolio have been acquired. The most recent acquisition was Spoolify.Here are SeaAhead's portfolio companies that got acquired most recently:
Company | Acquisition Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Feb 22, 2022 | - | - | 9353 | |
Feb 02, 2022 | - | - | 7988 | |
Jul 17, 2020 | Apr 22, 2025 | Series A | 8296 |
Team profile of SeaAhead
SeaAhead has a team of 26 members including 4 Partners, 4 Venture Partners and 1 Principal located in United States and Costa Rica. SeaAhead's team does not sit on the board of any company as of now.Here is a list of top team members in SeaAhead:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | Providence | - | ||
Partner | Boston | - | ||
Partner | - | - | - | |
Partner | Costa Rica | - | - | |
Venture Partner | Boston | - | - | |
Venture Partner | Biddeford | - | ||
Venture Partner | New York City | - | ||
Venture Partner | Boston | - | - | |
Principal | United States | - | - |
Co-investors of SeaAhead
Over the past 6 years, 42 investors have co-invested in SeaAhead's portfolio companies. This includes funds and angels.
- Invested before SeaAhead: Cavallo Ventures, E8 and 19 others have invested in rounds before SeaAhead. There is 1 company where Cavallo Ventures has invested before SeaAhead and 1 company where E8 has invested before SeaAhead.
- Top Co-investors of SeaAhead: 19 investors entered a company along with SeaAhead. These include investors like The Yield Lab (2 companies).
- Invested after SeaAhead: Lewis & Clark Agrifood (1 company) and American Lending Center (1 company) are the investors which have invested in SeaAhead's portfolio after their investments.
Recent News related to SeaAhead
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Data transmission firm CSignum raises £6 millionDaily Business•Apr 22, 2025•CSignum, Archangels, Par Equity, Scottish Enterprise and 4 others
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CSignum Secures €6.9 Million in Series A FundingEU-Startups•Apr 22, 2025•CSignum, Archangels, Par Equity, Scottish Enterprise and 4 others
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Wittaya Aqua raises seed funding; MON Protocol launches venture fundShareandstocks•Jul 18, 2024•The Yield Lab, SEEDS Capital, Future Planet Capital, Conservation and 3 others
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Starboard Maritime Intelligence attracts weighty backers for expansion plansRNZ•Apr 04, 2024•Starboard, Altered Capital, Icehouse Ventures, Invest South and 3 others
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BlueTrace Raises $3.2M in Seed FundingFinSMEs•Feb 16, 2023•Bluetrace, York IE, CEI, SeaAhead and 2 others
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Over $1 million for US micro-sized autonomous underwater vehiclesOffshore Energy•Jun 22, 2022•jaia robotics, Launchpad Venture Group, US Navy, Walnut Ventures and 4 others
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New Cohort of Startup Companies Supporting Ocean Health Selected for BlueSwell Incubator ProgramGlobeNewswire•Sep 21, 2021•SeaAhead, Neq
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SeaAhead and New England Aquarium Announce Launch of BlueSwell Incubator ProgramNewswire•Jun 18, 2020•SeaAhead
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SeaAhead and CIC Partner to Open Boston's First Ocean Innovation HubPR Newswire•Jan 08, 2019•SeaAhead, CIC Partners, CIC
