C5 Capital
London · Series B–Late Stage · 15 people tracked
Investment thesis
C5 invests across cybersecurity, space, and nuclear energy with emphasis on environmental sustainability and ESG alignment. In cybersecurity, the firm targets mid to late-stage companies transforming secure data ecosystems, leveraging domain expertise and operating partners for go-to-market execution and geographic expansion. In space and critical infrastructure, C5 pursues earlier-stage high-growth companies, providing portfolio support through an extensive network of operating partners and advisors to enable scaling and market access across commercial and government sectors.
Source: firm website, verified Jul 21, 2026.
Team · 15 people
from the firm's websiteExperienced investor and business executive trained at the London Metal Exchange with international operations experience at Antofagasta Minerals, where he served as Corporate Finance Director and CFO.
André Pienaar is a cybersecurity, space and energy expert and investor who founded C5 Capital. He began his career at Kroll, Inc., and founded G3, an international consulting firm advising on cybersecurity, which he sold to a European technology investment company in 2011. He serves on multiple boards and engages in philanthropic work supporting international peace, security, child protection and scientific causes.
Former Marine Corps AH-1W Cobra pilot with 15 years at Booz Allen Hamilton, where he established the national Innovation Center. Focuses on cybersecurity, space, and energy security solutions for commercial, defense, and intelligence sectors.
Co-Founder of Abundant Solutions AI with leadership experience from Flexport and Amazon Web Services, where he served in sales, marketing operations, and public sector business roles.
Investment professional with over two decades of expertise in venture capital and growth equity, with focus on energy technology and sustainable infrastructure. Previously held positions at Hannon Armstrong and Leaf Capital Management.
Former 17th Chairman of the U.S. Joint Chiefs of Staff under Presidents Bush and Obama, overseeing military operations in Iraq and Afghanistan. Now President of MGM Consulting and serves on multiple boards including in the defense and technology sectors.
Regional partner for Africa and the Middle East focused on nuclear industry supply chain resilience. Previously led critical infrastructure projects in gas exploration and undersea fiber-optic cable development across East Africa and the Middle East.
Brings technology sector experience in risk management and strategic advisory, along with public policy background from European institutions and the California State legislature. Holds a Master's degree in International Economics from Johns Hopkins SAIS.
Jeanne Tisinger is an accomplished global executive with extensive experience in strategy, technology management, cyber risk, enterprise security and governance. She previously served in C-Suite roles at the CIA, including Deputy Director of Support and Chief Information Officer, and currently serves on multiple corporate and nonprofit boards focused on cybersecurity, space, energy and national security.
Former CEO of Fortune 500 companies Blockbuster and 7-Eleven, now advising on technology initiatives in education, aerospace, and medicine. Founder of the nonprofit Education is Freedom and board member of multiple organizations supporting military veterans and innovation.
Investment analyst focused on portfolio management, deal flow, and execution, with particular emphasis on Haven Cyber Technologies. Joined C5 after graduating from McGill University in 2019.
Former partner at Davis Wright Tremaine LLP where he chaired the Communications Practice Group. Oversees legal risk, litigation, and regulatory compliance for C5 Capital and reviews all investment and operational agreements.
Former U.S. Air Force administrative specialist with 22 years of service, culminating as Executive Assistant to the Vice Chairman of the Joint Chiefs of Staff. Advocates for administrative professionals and hosts a podcast on career development in the field.
Rob Meyerson is the founder and CEO of Delalune Space, a management consulting firm focused on aerospace, mobility, technology and investment sectors. He previously served as President of Blue Origin, where he oversaw the company's growth from 2003 to 2018, building it from founding into a 1500-person organization and developing multiple launch vehicles and space systems.
Experienced fund operations professional with background in private equity and venture capital administration. Manages fund launching, regulatory compliance, investor communications, and transaction support across multiple jurisdictions.
What they invest in
from 3 of 10 portfolio companiesAI & Machine Learning ×2Enterprise Software ×2SaaS ×2Cloud Computing ×1Cybersecurity ×1Defense Tech ×1Developer Tools ×1EdTech ×1
HQs:United States×1
Investments · 10 tracked
founders shown can be your intro pathAxiom 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)
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. The platform serves Fortune 500 companies, governments, and independent software vendors by orchestrating release activities including security scanning and app distribution.
AI & Machine LearningCybersecurityDeveloper ToolsEnterprise SoftwareSaaS
Kevin Fox(CEO and Co-Founder)
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. The platform serves IT organizations and enterprises across financial services, technology, retail, manufacturing, healthcare, and other industries.
AI & Machine LearningCloud ComputingEnterprise SoftwareIoTSaaSSan Francisco, US
<UNKNOWN>
Frequently asked questions
- What stage does C5 Capital invest at?
- C5 Capital invests at the Series B, Series C, Growth, Late Stage stages.
- What sectors does C5 Capital focus on?
- C5 Capital focuses on Cybersecurity, Energy, Space Tech.
- Where is C5 Capital located?
- C5 Capital is headquartered in London, GB.
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