How many investments has C5 Capital made?

C5 Capital has 14 tracked investments, 1 of which have exited via acquisition or IPO.

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.

Who does C5 Capital co-invest with?

C5 Capital most often shares deals with AllegisCyber Capital, G Squared, Kleiner Perkins, among 54 tracked co-investors.

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 Tech Africa Europe Global London Middle East & North Africa North America

Source: firm website, verified Aug 25, 2026.

Stage

Series A–Late Stage

London, District of Columbia, 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

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· Houstonin

Rob Meyerson is the CEO of Interlune, a space resources company working to commercialize natural resources from the Moon — most notably helium-3, a resource rare on Earth but plentiful on the lunar surface. Under his leadership, Interlune is developing harvesting systems, extreme-environment survival technologies, and cargo return infrastructure to enable an in-space economy. The company serves customers in quantum computing, national security, fusion power, and medical imaging, and works with commercial and government partners for launch, landing, and lunar infrastructure.

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.

William Kilmer· Investment Principal / Board Member

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

What they invest in

from 12 of 16 portfolio companies

Enterprise Software ×9AI & Machine Learning ×7Cybersecurity ×6Cloud Computing ×5Data & Infrastructure ×5SaaS ×5Developer Tools ×3Deep Tech ×1

HQs:United States×6Israel×1

Investments · 16 tracked

founders shown can be your intro path

By year:2021 · 1 2018 · 1 2017 · 13 dated

Axiom Spaceaxiomspace.com in 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)inMichael Suffredini(Founder, former CEO and President)in

Co-investorsAlumni Ventures Basecamp Fund Beyond Earth Ventures Chenel Capital Partners Declaration Partners E2MC Ventures +19 more

Balabit IT Securitybalabit.com in 𝕏acquired by One Identity

CybersecurityEnterprise SoftwareSaaS

Blue Cedarbluecedar.com in 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

Co-investorsMighty Capital Benhamou Global Ventures

Bluevoyantbluevoyant.com

BlueVoyant is a New York-based cybersecurity firm combining internal and external cyber defense on one platform.

James Rosenthal(Founder)in

Co-investors8VC Dns Capital ForgePoint Capital Manhattan Venture Partners Planven Entrepreneur Ventures TempoCap

Constella Intelligenceconstellaintelligence.com in

Constella provides identity theft monitoring that continuously scans the surface, deep, and dark web for exposed corporate and personal credentials, infostealer logs, and leaked session cookies.

AI & Machine LearningCybersecurityData & InfrastructureEnterprise SoftwareSaaS

Co-investorsTheVentureCity Adara Ventures

Enveil, Inc.enveil.com in 𝕏

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

AI & Machine LearningCybersecurityData & InfrastructureDeep TechEnterprise SoftwareFulton, US

Ellison Anne Williams(Founder and CEO)

BoardTim Eades(Director)inZulfe Ali(Director)Robert R. Ackerman Jr.(Director)in

Co-investorsCyber Mentor Fund DataTribe In-Q-Tel AllegisCyber Capital Bloomberg Beta

Haven Cyber Technologieshavencyber.com

Hazelcasthazelcast.com in 𝕏Mar 2017

Hazelcast provides a distributed in-memory data platform offering caching, data integration, in-memory compute, and stream processing for building real-time applications.

AI & Machine LearningCloud ComputingData & InfrastructureEnterprise SoftwarePalo Alto, US

Morgan Dioli(Executive Officer)Ali Kutay(Director)Nadine Teixeira(Executive Officer)Greg Luck(Executive Officer, Director)Fuad Melikzade(Director)ROD JOHNSON(Director)

Co-investorsEarlybird Venture Capital

Ionirionir.com in 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)inOr Sagi(Chief Architect & VP, Technology)inBarak Azulay(VP, Engineering)in

Co-investorsJVP

Kevala

Cloud-based energy grid data analytics and visualization platform.

Omada

Identity Governance and Administration technology provider for enterprise cybersecurity.

Oomnitzaoomnitza.com in 𝕏

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

ARTHUR LOZINSKI(Executive Officer, Director)

BoardADAM SMITH(Director)

Co-investorsAspenwood Gula Tech Adventures Syn Ventures Seed Management Llc Bloomberg Beta Shasta Ventures

Panoplypanoply.io in 𝕏

Panoply is a cloud-based, managed data platform that provides code-free ELT pipelines, a data warehouse (built on BigQuery), and dashboards to consolidate data from many sources into a single source of truth.

Cloud ComputingData & InfrastructureDeveloper ToolsSaaS

Roi AvinoamYaniv Leven

Co-investors500 Global Blumberg Capital Ibex Investors Intel Capital

Shape Securityshapesecurity.com in 𝕏Sep 2018

Shape Security (now part of F5) provides bot defense that uses real-time behavioral analysis and platform-wide telemetry to distinguish humans, trusted AI agents, and malicious automation across web apps, mobile apps, and APIs.

AI & Machine LearningCloud ComputingCybersecurityEnterprise SoftwareMenlo Park, US

Tamara MacDuff(Executive Officer)Justin Call(Executive Officer)

BoardGaurav Garg(Director)Derek Smith(Executive Officer, Director)Ray Rothrock(Director)Ted Schlein(Director)

Co-investorsAllegisCyber Capital Baseline Ventures EPIC VENTURES JetBlue Ventures Kleiner Perkins Norwest Venture Partners +6 more

Synacksynack.com in 𝕏

Synack provides penetration testing and security assessments for enterprise security teams, combining AI agents with human testers to evaluate complex attack surfaces and protect critical infrastructure.

AI & Machine LearningCybersecurityEnterprise SoftwareRedwood City, US

Mark Kuhr(CTO and Co-Founder)Jay Kaplan(CEO and Co-Founder)Angela Heindl-Schober(Chief Marketing Officer)Steve Soper(Vice President of Legal)Rob Cross(Vice President, East)

BoardTed Schlein(Director (Kleiner Perkins Caufield & Byers, later Ballistic Ventures))

Co-investorsALLEGIS CAPITAL AllegisCyber Capital B Capital Group B4 Capital G Squared GV (Google Ventures)+10 more

X-Energy Reactor Company, LLCJan 2021

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

EnergyRockville, US

Matthew J. Yetman(Manager of the Issuer)

Co-investorsG Squared

Exits · 1

IPOs and acquisitions across the tracked portfolio

Balabit IT Securityacq. by One Identity

Portfolio news

latest coverage across their companies

Synack Supports Majority of Cabinet-Level Federal Departments as New AI Executive Order Raises the Bar on Federal Security | Markets Insider

Synack · markets.businessinsider.com · Jun 9, 2026

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

How many investments has C5 Capital made?: C5 Capital has 14 tracked investments, 1 of which have exited via acquisition or IPO.
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.
Who does C5 Capital co-invest with?: C5 Capital most often shares deals with AllegisCyber Capital, G Squared, Kleiner Perkins, among 54 tracked co-investors.

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