John Longhurst

Defence/Aerospace/Mfg industry governance/investment; Global Aerial Fire Fighting support activities; Geo-economic advisory

📍 Estonia🔄 Updated September 2026💼 7 investments📅 12 years investing🗓 Last invested Aug 2023
VC🌍 Estonia
7
Total investments
3
Early stage
1
Mid stage
1
Late stage
12y
Years active

Portfolio

7 investments · sorted by recency
All investments
Early stage
Mid stage
Late stage
Investor/Chairperson Advisory Board
Aug 2023
We are shaping a circular tomorrow with water reuse. With low maintenance requirements, easy deployment, and remote monitoring capabilities, were redefining how water is managed. Our systems enable efficient reuse of wastewater for various applications, including irrigation, toilet flushing, and industrial processes.
Global Strategy Board member
Oct 2022
Chiefs of staff are trusted advisors to the world’s most influential leaders. The Chief of Staff Association (CSA) is the professional association for chiefs of staff in leading corporations, governments and the military. The CSA provides world-class education, networking, and professional development, including executive education programmes at Oxford’s Saïd Business School and Harvard Business School. The CSA is the only professional association that can issue the industry-recognised Certified Chief of Staff® credential. Join us at COS25, our premier global conference, where chiefs of staff from around the world will gather to share insights, build connections, and shape the future of the profession. Learn more here: https://csa.org/cos25
Investor/Advisor
Jan 2022
KrattWorks builds aerial targets and jamming-resistant high-performance ISR drones for front line operators and defence sector.
Investor/Strategic Advisor to CEO
May 2016
Click And Grow is one of the leading producers of smart gardens in the market. We have created a technology that enables everyone to grow fresh, GMO-free and pesticide-free food from their home or office without the need for fertilizing and regular watering. Click And Grow was founded in 2009 and has shipped its products to hundreds of thousands of customers worldwide. The company is headquartered in Tartu, Estonia. It also has offices in Tallinn and San Francisco.
late stageManufacturing
Board Member
Aug 2015
Cyber Policy Institute (CPI) is a private non-profit entity focusing on strategic cyber security and stability. The Institute contributes to and facilitates cybersecurity dialogue between governments, industry and the civil society. Standing for an inclusive and balanced discourse on international cyber peace and security as well as national development, CPI seeks to contribute to all and any efforts to maintain and design information and communication technologies in a safe, open and transparent manner that for us is a prerequisite of international peace and security, economic prosperity as well as societal and individual empowerment. Founded in 2014 in support of the Estonian contribution to the UN Group of Governmental Experts (UN GGE) on international information security, CPI has expanded its focus to Nordic and Baltic experience and lessons learned in digital development and security. The Institute is committed to critical and independent thinking about normative and political aspects of international cybersecurity. CPI offers policy-relevant avant-garde advice and research that applies the views, concepts and methods of International Law, International Relations, security studies and developmental studies.
early stageThink Tanks
Investor/Strategic Advisor to CEO
Jun 2015
Defendec is an innovative company specializing in the development of world-class remote premises surveillance technology. The company operates globally with offices in Washington, D.C, Singapore, Estonia. Defendecs main product, Smartdec, is securing NATO’s and European Unions external borders. It is currently operational worldwide. Smartdec helps stop international smuggling, illegal trafficking, and acts of sabotage every day making it the technology of choice among border guards.
Lead Investor
Mar 2014
Buildit is an early-stage hardware venture capital fund. We invest in the Industry 4.0 sector across the Baltics and Nordics, providing pre-seed and seed capital.
Experience · 14 entries
All (14)
Investments (7)
Founder (2)
Board (2)
2023
Investor/Chairperson Advisory Board
Aug 2023
We are shaping a circular tomorrow with water reuse. With low maintenance requirements, easy deployment, and remote monitoring capabilities, were redefining how water is managed. Our systems enable efficient reuse of wastewater for various applications, including irrigation, toilet flushing, and industrial processes.
2022
Global Strategy Board member
Oct 2022
Chiefs of staff are trusted advisors to the world’s most influential leaders. The Chief of Staff Association (CSA) is the professional association for chiefs of staff in leading corporations, governments and the military. The CSA provides world-class education, networking, and professional development, including executive education programmes at Oxford’s Saïd Business School and Harvard Business School. The CSA is the only professional association that can issue the industry-recognised Certified Chief of Staff® credential. Join us at COS25, our premier global conference, where chiefs of staff from around the world will gather to share insights, build connections, and shape the future of the profession. Learn more here: https://csa.org/cos25
Investor/Advisor
Jan 2022
KrattWorks builds aerial targets and jamming-resistant high-performance ISR drones for front line operators and defence sector.
2017
Principal Advisor to CEO
Sep 2017
Leonardo is a global security company that realises multi-domain technological capabilities in AD&S. With over 53,000 employees worldwide, the company has a significant industrial presence in Italy, the UK, Poland, and the US. It also has a commercial presence in 150 countries through subsidiaries, joint ventures and investments. A key player in major international strategic programmes, it is a technological and industrial partner of governments, defence administrations, institutions and companies. In 2023, Leonardo recorded consolidated revenues of €15.3 bn and new orders for €17.9 bn. Innovation, continuous research, digitalisation and sustainability are the pillars of its business worldwide. Stefano Pontecorvo has been the Chairman since 9 May 2023 and Roberto Cingolani has been the CEO and General Manager since 9 May 2023. Follow Leonardo on social media: ➡️https://x.com/Leonardo_live ➡️https://www.instagram.com/leonardo_company/ ➡️https://www.youtube.com/leonardocompany
2016
Investor/Strategic Advisor to CEO
May 2016
Click And Grow is one of the leading producers of smart gardens in the market. We have created a technology that enables everyone to grow fresh, GMO-free and pesticide-free food from their home or office without the need for fertilizing and regular watering. Click And Grow was founded in 2009 and has shipped its products to hundreds of thousands of customers worldwide. The company is headquartered in Tartu, Estonia. It also has offices in Tallinn and San Francisco.
late stageManufacturing
Show all 14 entries ↓
Investment activity
2014–2023 · 7 investments
2014120152201612022220231
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