What stage does C5 Capital invest at?

C5 Capital invests at the Series A, Series B, Series C, Growth, Late Stage stages.

What sectors does C5 Capital focus on?

C5 Capital focuses on Cybersecurity, Defense Tech, Energy, Space Tech.

Where is C5 Capital located?

C5 Capital is headquartered in London, GB.

Does C5 Capital lead rounds?

Yes, C5 Capital leads investment rounds.

C5 Capital

Venture capital

London · Series A–Late Stage · 17 people tracked

Also known as C5 CAPITAL LIMITED · C5 CAPITAL USA LLC

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Investment thesis

C5 Capital positions itself as an investment firm dedicated to fostering a secure digital future, indicating a focus on technologies related to digital security. The available page content is limited to high-level navigation and a tagline, so specifics on stage, check size, and detailed strategy are not stated.

Invests inCybersecurity Defense Tech Energy Space TechAfricaEuropeGlobalLondonMiddle East & North AfricaNorth America

Source: firm website, verified Aug 3, 2026.

Stage

Series A–Late Stage

London, GB

Leads rounds

Leads

Instruments

Equity

Founded

2009

Private fund assets

$184.8M

VC funds

Tracked investments

Team · 17 people

from the firm's website

André Pienaar· Founder, CEO and Head of Investor Relations· London

South African-born cybersecurity, space and energy investor who founded C5 Capital. He previously worked at Kroll, founded consulting firm G3 (later sold), and serves on several company boards and philanthropic organizations.

Alexander Richard Newman· Chairman, General Partners· London

Chairman of the General Partners and experienced investor and executive. He previously served as Corporate Finance Director and CFO at Antofagasta Minerals and has advised on defense procurement.

Kurt Scherer· Managing Director· Washingtonin

Managing Director overseeing a portfolio in cybersecurity, space and energy security. He previously spent 15 years at Booz Allen Hamilton and served as a US Marine Corps Cobra pilot.

K•••@c5capital.comreveal

William Kilmer· Investment Principal / Board Member

C5 Capital investment principal and board representative for portfolio company Hazelcast.

Zulfe Ali· Investment Principal

C5 Capital investment principal associated with the Axiom Space investment.

Robert Penfold· Venture Partner· Washington D.C.

Venture Partner and co-founder of Abundant Solutions AI, with prior leadership roles at Flexport and Amazon Web Services in sales, marketing and public sector operations.

Yonatan Alemu· Venture Partner· Washington D.C.

Venture Partner with over two decades in venture capital, growth equity and investment banking focused on energy technology and sustainable infrastructure. He previously worked at Hannon Armstrong and Leaf Capital Management.

Admiral Mike Mullen· Strategic Partner· Washington

Strategic Partner and former Chairman of the US Joint Chiefs of Staff (2007-2011) and 28th Chief of Naval Operations. He is President of MGM Consulting and serves on various corporate and nonprofit boards.

Chris Opperman· Operating Partner· Washington D.C.

Operating Partner for Africa and the Middle East, focused on the resilience of the global nuclear supply chain. He previously held leadership roles in critical infrastructure across Africa and the Middle East and served in South African diplomatic postings.

Janna Ayoub· Chief of Staff· Londonin

Chief of Staff with prior experience in the technology sector in risk management and strategic advisory, plus public policy roles in Europe and California. She holds a master's degree from Johns Hopkins SAIS.

Jeanne Tisinger· C5 Board Member

Former CIA Deputy Director for Support and CIO, now a board director and advisor across cyber, space and national security organizations. She serves as a C5 board representative for Axiom Space.

Jim Keyes· Senior Advisor· Washington, DCin

Senior Advisor and former CEO of Fortune 500 companies Blockbuster and 7-Eleven. He is engaged in technology initiatives across education, medicine and aerospace and founded the nonprofit Education is Freedom.

Karl Ilias Auersperg· Investment Analyst· Londonin

Investment Analyst supporting portfolio management, deal sourcing and execution, with a focus on Haven Cyber Technologies. He joined C5 in 2019 after graduating from McGill University.

Michael Sloan· General Counsel· Washington, DCin

General Counsel responsible for legal risk, regulatory compliance and negotiating C5's agreements. Previously a partner at Davis Wright Tremaine LLP.

Molly Denham· Executive Assistant· Washington D.C.

Executive Assistant who served 22 years in the US Air Force, including as EA to the Vice Chairman of the Joint Chiefs of Staff. She joined C5 Capital in 2024 and hosts a podcast on administrative professionals.

Rob Meyerson· C5 Board Member· Tacoma, Washingtonin

Founder and CEO of Delalune Space and former President of Blue Origin, where he led the company's growth from 2003 to 2018. He holds an aerospace engineering degree and serves as a C5 board representative for Axiom Space.

Umme Sameera· Fund Operations· London

Fund Operations professional with a background in private equity and venture capital fund administration, compliance and investor relations. She has held roles at Apex Group and Park Square Capital.

What they invest in

from 8 of 14 portfolio companies

AI & Machine Learning ×5Enterprise Software ×5Cloud Computing ×3Cybersecurity ×3Data & Infrastructure ×3Developer Tools ×2SaaS ×2Deep Tech ×1

HQs:United States×4

Investments · 14 tracked

founders shown can be your intro path

Axiom Spaceaxiomspace.comin 𝕏

Axiom Space develops commercial space stations and provides access to low-Earth orbit microgravity environments for research, manufacturing, and innovation by governments, researchers, and organizations.

Defense TechEdTechHardwareSpace Tech

Dr. Kam Ghaffarian(Executive Chairman)Michael Suffredini(Founder, former CEO and President)

Balabit IT Securitybalabit.comin 𝕏

Blue Cedarbluecedar.comin 𝕏

Blue Cedar provides a platform for deploying and managing mobile applications across enterprise environments, integrating with popular tools like GitHub, GitLab, and Apple/Google app stores.

AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS

Kevin Fox(CEO and Co-Founder)in

Bluevoyantbluevoyant.com

Constella Intelligenceconstellaintelligence.com

Enveil, Inc.enveil.comin 𝕏

Enveil develops Privacy Enhancing Technologies (PETs), including its ZeroReveal solutions and Secure AI, that protect data while it is being used or processed.

AI & Machine LearningCybersecurityData & InfrastructureDeep TechEnterprise SoftwareFulton, US

Ellison Anne Williams(Founder and CEO)Tim Eades(Director)Zulfe Ali(Director)Robert R. Ackerman Jr.(Director)

Haven Cyber Technologieshavencyber.com

Hazelcasthazelcast.comin 𝕏

Hazelcast provides a unified real-time data platform that combines stream processing with a fast in-memory data store, enabling applications to act instantly on streaming data and operationalize machine learning models across on-premises and cloud environments.

AI & Machine LearningData & InfrastructureEnterprise SoftwarePalo Alto, US

Morgan Dioli(Executive Officer)Ali Kutay(Director)Salil Deshpande(Director)Nadine Teixeira(Executive Officer)Fuad Melikzade(Director)Roland Manger(Director)

Ionirionir.comin 𝕏

ionir develops software-defined, cloud-native storage and data management technology for enterprise data centers and cloud environments.

Cloud ComputingData & InfrastructureDeveloper ToolsEnterprise Software

Almog Apirion(CEO & Co-Founder)Nir Peleg(CTO)Jacob Cherian(CEO)Or Sagi(Chief Architect & VP, Technology)Barak Azulay(VP, Engineering)

Kevala

Cloud-based energy grid data analytics and visualization platform.

Omada

Identity Governance and Administration technology provider for enterprise cybersecurity.

Oomnitzaoomnitza.comin

Oomnitza provides an Enterprise Technology Management platform that automates key IT business processes by correlating data from existing solutions to manage users, endpoints, applications, and infrastructure.

AI & Machine LearningCloud ComputingEnterprise SoftwareIoTSaaSSan Francisco, US

ADAM SMITH(Director)ARTHUR LOZINSKI(Executive Officer, Director)

Shape Securityshapesecurity.comin 𝕏

Shape Security (now F5 Distributed Cloud Bot Defense) provides bot defense that distinguishes humans, trusted AI agents, and malicious automation across web apps, mobile apps, and APIs using real-time behavioral analysis.

AI & Machine LearningCloud ComputingCybersecurity

X-Energy Reactor Company, LLC

Developer of advanced small modular nuclear reactors and fuel technology for clean energy.

EnergyRockville, US

Matthew J. Yetman(Manager of the Issuer)

Principals & officers · per Companies House

what is this? ⓘ

Andries Daniel Faber Pienaar

Director · British · since 2015

Stephen John Leadbetter Wright

Director · British · since 2026

Ownership & control

Andries Daniel Faber Pienaar — significant influence or control

C5 Holdings (Uk) Limited — 75–100% of shares, 50–75% of voting rights

Frequently asked questions

What stage does C5 Capital invest at?: C5 Capital invests at the Series A, Series B, Series C, Growth, Late Stage stages.
What sectors does C5 Capital focus on?: C5 Capital focuses on Cybersecurity, Defense Tech, Energy, Space Tech.
Where is C5 Capital located?: C5 Capital is headquartered in London, GB.
Does C5 Capital lead rounds?: Yes, C5 Capital leads investment rounds.

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