About C5 Capital
C5 Capital is a venture capital firm founded in 2012. It is primarily based out of London, United Kingdom. As of Jan 2023, C5 Capital has invested in 26 companies. It primarily invests in Series C round in United States based startups. Its investments are spread across a wide range of sectors from Enterprise Applications to Enterprise Infrastructure and High Tech. Most recently it participated in the $***** Conventional Debt round of IronNet Overall, C5 Capital portfolio has seen 3 unicorns, 1 IPO and 7 acquisitions including key companies like RapidSOS, BlueVoyant and Axiom Space. A lot of funds co-invest with C5 Capital, with names like Intel Capital sharing a substantial percentage of its portfolio. C5 Capital has team of 12 people including 6 partners.Key Metrics
Team Members
Portfolio Sectors
Portfolio Locations
Rounds of Entry
Series C, Seed & 5 more
Portfolio IPOs
Portfolio Unicorns
C5 Capital's List of Top Investments
C5 Capital has a portfolio of 26 companies, including 3 unicorns. Their most notable investments are in Parcelninja and Synack.Their portfolio spans across United States, South Africa, United Kingdom and 6 more locations. They have invested in Enterprise Applications, Enterprise Infrastructure, High Tech and 8 other sectors, across stages such as Series C, Seed and 5 more. Here is the list of top investments by C5 Capital:
1. RapidSOS
Provider of an intelligent safety platform connecting data to first responders. The platform securely links data from connected devices and buildings directly to emergency services and field responders. It offers solutions for public safety agencies and private organizations. The platform aims to provide critical insights to assist in emergency response situations.
Key facts about RapidSOS
2. Synack
Platform offering security testing solution. Synack provides crowdsourced vulnerability discovery and security testing solutions. The platform leverages AI and conducts continuous security testing on mobile, web, APIs, cloud assets, etc. The features of the product include patch verification, reporting, vulnerability assessment, etc.
Key facts about Synack
- Founded Year: 2013
- Location: San Francisco (United States)
- Valuation: $*****
- Stage: Series D
- Total Funding till date: $112M
- Employee Count: 237 as on Aug 31, 2026
- Investors: Icon Ventures, Section Partners and 25 Others
- Latest Funding Round: Series D, May 28, 2020, $*****
- Highlight: Editors' Pick
3. BlueVoyant
Cloud native cyber defense platform. Offers various solution such as threat intelligence, managed security, and professional services. It is an outcomes-based platform that aims to deliver positive security outcomes driving business results.
Key facts about BlueVoyant
- Founded Year: 2017
- Location: New York City (United States)
- Valuation: $*****
- Stage: Series E
- Total Funding till date: $696M
- Employee Count: 600 as on Sep 30, 2026
- Investors: Haymaker Growth, Temasek and 17 Others
- Latest Funding Round: Series E, Nov 30, 2023, $*****
- Highlight: Editors' Pick
4. Axiom Space
Developer of commercial space stations for habitation. Its space stations can host microgravity experiments and space-environment materials testing. It is also developing a thruster that can be installed on a mobile propulsion test stand. It also caters to government astronauts, tourists, private companies, and individuals for research, manufacturing, space exploration system testing and tourism.
Key facts about Axiom Space
- Founded Year: 2016
- Location: Houston (United States)
- Valuation: $*****
- Stage: Series D
- Total Funding till date: $1B
- Employee Count: 797 as on Aug 31, 2026
- Investors: Trinity Capital, RAA Capital and 39 Others
- Latest Funding Round: Series D, Jun 05, 2026, $*****
- Highlight: Editors' Pick
5. Panaseer
Provider of continuous controls monitoring software for cybersecurity risk management. This platform aggregates data from security, information technology, and business tools to identify control gaps and asset vulnerabilities. It maps technical metrics to industry frameworks and regulatory requirements to facilitate compliance reporting and audit preparation. The software provides visibility into control performance across various business units and technical domains. It automates the discovery of unknown assets and prioritizes mitigation efforts based on identified risks. The system integrates with existing security infrastructure to support evidence-based decision-making and oversight of security posture.
Key facts about Panaseer
- Founded Year: 2014
- Location: Godalming (United Kingdom)
- Annual Revenue: £10M - £50M as on Jun 30, 2025
- Valuation: $*****
- Stage: Series B
- Total Funding till date: $93M
- Employee Count: 84 as on Aug 31, 2026
- Investors: ForgePoint Capital, TempoCap and 31 Others
- Latest Funding Round: Series B, Mar 11, 2024, $*****
- Highlight: Editors' Pick
C5 Capital's Year-on-Year Investment Trends
C5 Capital has invested in 27 companies over the last 12 years, with an average of 2 new investments annually in the last 10 years. Its most recent first time investment was in Cassava Technologies and most recent follow-on round was in IronNet.Year | No. of Investments | ||
|---|---|---|---|
1st Round | Follow-on | Total | |
2026 (YTD) | 0 | 0 | 0 |
2025 | 0 | 0 | 0 |
2024 | 0 | 0 | 0 |
2023 | 0 | 1 | 1 |
2022 | 1 | 2 | 3 |
2021 | 4 | 0 | 4 |
2020 | 5 | 4 | 9 |
2019 | 5 | 0 | 5 |
2018 | 2 | 0 | 2 |
2017 | 2 | 0 | 2 |
C5 Capital's Investments by Stage
C5 Capital has made 6 investments in Series C stage with an average round size of $26.8M, 4 investments in Seed stage with an average round size of $2.24M and 4 investments in Series A stage with an average round size of $12M.Stage of entry | No. of Investments |
|---|---|
Series C | 6 |
Seed | 4 |
Series A | 4 |
Series B | 4 |
Series D | 2 |
Others | 2 |
Note: We have considered here, only first round of investments
C5 Capital's Investments by Sector
C5 Capital has a diverse portfolio, with companies operating in the Enterprise Applications, Enterprise Infrastructure, High Tech, Business Services and Aerospace, Maritime and Defense Tech. Notably, it has invested in 22 Enterprise (B2B) companies, 21 Tech companies, 16 Software companies and at least 10 companies focusing on Saas.Sector | No. of Investments |
|---|---|
Enterprise Applications | 13 |
Enterprise Infrastructure | 12 |
High Tech | 4 |
Business Services | 3 |
Aerospace, Maritime and Defense Tech | 2 |
Others | 8 |
Note: We have considered here, only first round of investments
C5 Capital's Investments by Geography
C5 Capital has made most investments in United States (16), followed by South Africa where it has made 2 investments.Country | No. of Investments |
|---|---|
United States | 16 |
South Africa | 2 |
China | 1 |
Hungary | 1 |
Israel | 1 |
Others | 2 |
Note: We have considered here, only first round of investments
C5 Capital's recent investments
C5 Capital has not made any investment in 2026 so far.Here are the most recent investments by C5 Capital:
Filter this listDate | Company | Location | Round Details | Round Amount | Co-Investors |
|---|---|---|---|---|---|
Jan 06, 2023 | United States | Conventional Debt | 5871 | - | |
Oct 25, 2022 | United States | Series D | 2925 | [+10] | |
Jul 18, 2022 | South Africa | Series C | 2960 | - | |
Apr 27, 2022 | United States | Series B | 3718 | [+8] | |
Dec 02, 2021 | United States | Seed | 8182 | - |
Unicorns in C5 Capital's Portfolio
C5 Capital has 3 unicorns in its portfolio - RapidSOS, BlueVoyant and Axiom Space. The most recent unicorn in their portfolio is RapidSOS. It became a unicorn in 2025, 5 years after C5 Capital first invested in it.Here is a list of unicorns in C5 Capital's portfolio:
Tracxn Score | Company | Short Description | Founded year | Sector | Location | Company Stage | First Investment/ Acquisition Details |
|---|---|---|---|---|---|---|---|
70 | Provider of an intelligent safety platform connecting data to first responders | 2012 | New York City | Series E | ayypnbf | ||
67 | Cloud native cyber defense platform | 2017 | New York City | Series E | tryfwcc | ||
64 | Developer of commercial space stations for habitation | 2016 | Houston | Series D | ojrpujx |
IPOs and Publicly Listed companies in C5 Capital's Portfolio
1 of C5 Capital's portfolio company became public - X Energy. It got listed on the National Association of Securities Dealers Automated Quotations (NASDAQ), in Apr 2026 at marketcap of $6.07BHere are C5 Capital's portfolio companies that went public:
Company | IPO Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Apr 24, 2026 | Dec 02, 2021 | Seed | 9368 |
Acquired companies in C5 Capital's Portfolio
7 companies from C5 Capital's portfolio have been acquired. The most recent acquisition was Omada in Apr 2025 by GRO Capital for $*****.Here are C5 Capital's portfolio companies that got acquired most recently:
Company | Acquisition Date | First Invested on | First Round of Investment | Round Size |
|---|---|---|---|---|
Apr 29, 2025 | - | - | 6438 | |
Apr 14, 2025 | - | - | 7235 | |
Mar 04, 2024 | Oct 09, 2019 | Series C | 5298 | |
Dec 15, 2021 | Sep 18, 2017 | Series A | 2925 | |
Feb 01, 2021 | Feb 02, 2015 | Seed | 9606 |
Team profile of C5 Capital
C5 Capital has a team of 12 members including 6 Partners, 2 Venture Partners and 1 Principal located in United Kingdom. C5 Capital's team sits on the board of 1 company.Here is a list of top team members in C5 Capital:
Name | Designation | Location | Board Memberships | Contact Details |
|---|---|---|---|---|
Partner | London | - | - | |
Partner | London | - | ||
Partner | - | - | - | |
Partner | - | - | - | |
Partner | - | - | - | |
Partner | - | - | - | |
Venture Partner | - | - | - | |
Venture Partner | - | - | - | |
Principal | - | - | - |
Co-investors of C5 Capital
Over the past 12 years, 175 investors have co-invested in C5 Capital's portfolio companies. This includes funds and angels.
- Invested before C5 Capital: Kleiner Perkins, M12 and 81 others have invested in rounds before C5 Capital. There are 4 companies where Kleiner Perkins has invested before C5 Capital and 3 companies where M12 has invested before C5 Capital.
- Top Co-investors of C5 Capital: 29 investors entered a company along with C5 Capital. These include investors like Intel Capital (2 companies).
- Invested after C5 Capital: A total of 63 investors have invested in C5 Capital's portfolio after their investments. Top Investors include Europa (2 companies), NightDragon (1 company) and BAM Elevate (1 company).
Recent News related to C5 Capital
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C5 Capital raising $750 million growth equity fund for nuclear energy supply chainEnergy Central•May 29, 2025•C5 Capital, Duke Energy
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C5 Capital Signs MOU with Sibanye-Stillwater to Advance Nuclear Energy in South Africa, the United States and GloballyMiningstockeducation•Nov 21, 2024•C5 Capital, Sibanye-Stillwater
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C5 Capital Signs MOU with Sibanye-Stillwater to Advance Nuclear Energy in South Africa, the United States and GloballyPR Newswire•Nov 21, 2024•C5 Capital, Sibanye-Stillwater
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Sibanye-Stillwater teams up with C5 Capital to develop advanced nuclear energy projectsSeeking Alpha•Nov 21, 2024•Sibanye-Stillwater, C5 Capital
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invygo pursues profitability after raising $8 million Series A extensionWamda•Oct 23, 2024•Invygo, STV, AlRajhi Partners, Arab Bank and 2 others
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C5 Capital Partners With Ukraine’s Brave1 Accelerator To Advance Ukraine’s Defense InnovationBusiness Wire•Oct 04, 2024•C5 Capital, Brave1
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C5 Capital and Partners Offer IronNet, Inc. Board Continued Financing to Enable the Restructuring of the CompanyKentucky Today•Sep 03, 2023•C5 Capital, IronNet
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Partner One acquires key assets of Fidelis Cybersecuritylelezard.com•Aug 08, 2023•PartnerOne, FidelisCybersecurity, IronNet, C5 Capital and 1 other
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C5 Capital Appoints Pete Cooper as Managing Partner and Global Head of PartnershipsPR Newswire•Apr 18, 2023•C5 Capital
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