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Gilbert Chalk
Chairman at
CASTLE PRIVATE EQUITY AG
Net worth: 6 719 $ as of 31/05/2026
Profile
Gilbert John Chalk was the founder of Hambro European Ventures Ltd. (1987) as Managing Director.
Current jobs include Chairman at Castle Private Equity AG (2008) and Director at Future Academies (2017).
Former jobs include Non-Executive Chairman at Aurora Russia Ltd. (2013-2016), Non-Executive Chairman at Image Scan Holdings Plc (2007-2009), Chairman at Baring English Growth Fund (2000-2010), Chairman at Ravenscroft Ltd. (Private Equity), Non-Executive Director at Vantage Goldfields Ltd., Director at Constantine Group Ltd. (2004-2012), Director at iRiS Software Systems Ltd., Manager at Hambros Bank Plc, and Principal at 24Haymarket Ltd. Education includes an MBA from The Trustees of Columbia University in The City of New York (1972), an undergraduate degree from The University of Southampton, and a graduate degree from the University of Lancaster (1972).
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 31/12/2025 | 1,750 ( 0.02% ) | 6 719 $ | 31/05/2026 |
Gilbert Chalk active positions
| Companies | Position | Start |
|---|---|---|
| CASTLE PRIVATE EQUITY AG | Chairman | 29/10/2008 |
Future Academies
 Future Academies Miscellaneous Commercial ServicesCommercial Services Functions as business associations | Director/Board Member | 17/07/2017 |
Former positions of Gilbert Chalk
| Companies | Position | End |
|---|---|---|
| AURORA RUSSIA LIMITED | Chairman | 09/03/2016 |
Constantine Group Ltd.
 Constantine Group Ltd. Miscellaneous Commercial ServicesCommercial Services Provides logistics, renewable energy and property investment services | Director/Board Member | 31/08/2012 |
Baring English Growth Fund
 Baring English Growth Fund Investment ManagersFinance Acts as Private Equity Fund | Chairman | 01/01/2010 |
| IMAGE SCAN HOLDINGS PLC | Chairman | 03/07/2009 |
Hambro European Ventures Ltd.
 Hambro European Ventures Ltd. Financial ConglomeratesFinance Provides investment in management buy-outs, development capital and other securities. | Founder | 01/01/1994 |
Training of Gilbert Chalk
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
87
1st degree connections
15
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 15 |
|---|---|
Aurora Russia Ltd.
 Aurora Russia Ltd. Investment ManagersFinance Acts as Private Equity Fund | Finance |
The Trustees of Columbia University in The City of New York
 The Trustees of Columbia University in The City of New York Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Castle Private Equity AG
 Castle Private Equity AG Investment Trusts/Mutual FundsMiscellaneous Acts as Private Equity Fund | Miscellaneous |
Image Scan Holdings Plc
 Image Scan Holdings Plc Aerospace & DefenseElectronic Technology Manufactures and sells portable X-ray screening systems for security and counter terrorism applications | Electronic Technology |
Hambros Bank Plc
 Hambros Bank Plc Regional BanksFinance Provides banking services | Finance |
Baring English Growth Fund
Baring English Growth Fund Investment ManagersFinance Acts as Private Equity Fund | Finance |
Hambro European Ventures Ltd.
Hambro European Ventures Ltd. Financial ConglomeratesFinance Provides investment in management buy-outs, development capital and other securities. | Finance |
The University of Southampton
 The University of Southampton Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Lancaster
 University of Lancaster Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Vantage Goldfields Ltd.
 Vantage Goldfields Ltd. Precious MetalsNon-Energy Minerals Operates as a mineral exploration company | Non-Energy Minerals |
Constantine Group Ltd.
Constantine Group Ltd. Miscellaneous Commercial ServicesCommercial Services Provides logistics, renewable energy and property investment services | Commercial Services |
24Haymarket Ltd.
 24Haymarket Ltd. Investment ManagersFinance 24Haymarket invests in companies located in the UK with an investments of GBP 1 million to GBP 3 million. The firm targets companies operating in the fields of Digital Healthcare, Ed Tech, Cyber security, Supply Chain & Logistics Technology, Future of Work, Climate Technology, professional services, digitalization provides financing for early stage and growth capital requirement and also participates in subsequent rounds. | Finance |
Future Academies
Future Academies Miscellaneous Commercial ServicesCommercial Services Functions as business associations | Commercial Services |
Iris Software Systems Ltd.
 Iris Software Systems Ltd. Packaged SoftwareTechnology Services Provides mobile and web solutions for hospitality industry | Technology Services |
Ravenscroft Ltd. (Private Equity)
 Ravenscroft Ltd. (Private Equity) Investment ManagersFinance Ravenscroft invests in companies located in Guernsey. The firm focuses on a broad range of sectors and industries. It participates in buyout stage capital transactions. | Finance |
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