![Philippe Costeletos](data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" fill="%231b1b1b" class="bi bi-person-fill" viewBox="0 0 16 16"><path d="M3 14s-1 0-1-1 1-4 6-4 6 3 6 4-1 1-1 1zm5-6a3 3 0 1 0 0-6 3 3 0 0 0 0 6"/></svg>)
Philippe Costeletos
Chairman at
RIT CAPITAL PARTNERS PLC
Net worth: 2 M $ as of 2026-05-30
Profile
Philippe Marinos Costeletos is the founder of Stemar Capital Partners Ltd. (2017).
Current jobs include Co-Chief Executive Officer at Colony Global Acquisition Corp.
(2015), Chairman at RIT Capital Partners Plc (2025), Chairman at RIT Capital Partners Plc (Private Equity), Chairman at Mistral Fertility Clinics SL, Non Executive Director at Autohellas SA (2023), Director at Imagine Mortgages Ltd., Non-Executive Director at Vangest Group, Member-Presidents Council at Yale University, Senior Advisor at The Blackstone Group (HK) Ltd., Board Member at Zeno Ventures Management LLC, Member at President's Council on International Activities, International Partner & Investment Committee Member at EOS Capital Partners SA, and Board Member at Digital Care Holdings, LLC.
Former jobs include Chairman-International at Colony Capital, Inc. (San Diego) (2015-2016), Director at Debenhams Plc (2009), Non-Executive Director at Ontex BV, Director at DMC Partners (London) Ltd., Independent Non-Executive Director at Frigoglass SAIC (2020-2023), Managing Partner at TPG Capital (UK) Ltd., and Vice President at JP Morgan & Co. (1991-1995).
Education includes an undergraduate degree from Yale University (1987) and an MBA from Columbia Business School (1991).
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-01-15 | 76,962 ( 0.06% ) | 2 M $ | 2026-05-30 |
Philippe Costeletos active positions
| Companies | Position | Start |
|---|---|---|
| RIT CAPITAL PARTNERS PLC | Chairman | 2025-04-30 |
| AUTOHELLAS S.A. | Director/Board Member | 2023-01-24 |
President's Council on International Activities
 President's Council on International Activities Miscellaneous Commercial ServicesCommercial Services Operates councils on international activities | Corporate Officer/Principal | - |
Digital Care Holdings, LLC | Director/Board Member | - |
The Blackstone Group (HK) Ltd.
 The Blackstone Group (HK) Ltd. Investment ManagersFinance Provides investment advisory services | Consultant / Advisor | - |
Zeno Ventures Management LLC
 Zeno Ventures Management LLC Investment ManagersFinance Zeno Ventures invests in companies located across the globe. The firm targets companies operating across a broad range of sectors and industries. It provides financing for early and growth stage capital transactions. | Director/Board Member | - |
Yale University
 Yale University Other Consumer ServicesConsumer Services Functions as a College/University | Corporate Officer/Principal | - |
RIT Capital Partners Plc (Private Equity)
 RIT Capital Partners Plc (Private Equity) Investment ManagersFinance RIT Capital Partners invests in public & private companies and funds located across the globe. The firm focuses on companies operating in the fields of enterprise software, fintech & financial services, healthcare & life sciences, consumer, AI & advanced technologies and industrials sectors. It provides financing for buyout and growth stage capital requirements. | Chairman | 2025-04-30 |
Vangest Group
 Vangest Group Industrial MachineryProducer Manufacturing Manufactures industrial mold and prototypes | Director/Board Member | - |
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Former positions of Philippe Costeletos
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| ░░░ ░░░░░░░░ ░░░░░░░░ ░░░░ | ░░░░░░░░░░░░░░ ░░░░░░ | - |
Training of Philippe Costeletos
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
88
1st degree connections
22
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 22 |
|---|---|
RIT Capital Partners Plc
 RIT Capital Partners Plc Investment Trusts/Mutual FundsMiscellaneous Functions as a unit investment trust | Miscellaneous |
Debenhams Plc
 Debenhams Plc Specialty StoresRetail Trade Operates as an online platform for beauty and fashion products | Retail Trade |
Frigoglass SAIC
 Frigoglass SAIC Industrial MachineryProducer Manufacturing Manufactures and sells commercial refrigeration units, glass containers, plastic crates and metal crowns | Producer Manufacturing |
Autohellas SA
 Autohellas SA Finance/Rental/LeasingFinance Provides car rental and fleet management services | Finance |
Yale University
Yale University Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Ontex BV
 Ontex BV Household/Personal CareConsumer Non-Durables Manufactures hygienic disposables | Consumer Non-Durables |
TPG Capital (UK) Ltd.
 TPG Capital (UK) Ltd. Investment ManagersFinance Acts as an alternative investment manager | Finance |
The Blackstone Group (HK) Ltd.
The Blackstone Group (HK) Ltd. Investment ManagersFinance Provides investment advisory services | Finance |
Colony Capital, Inc. (San Diego)
 Colony Capital, Inc. (San Diego) Miscellaneous Commercial ServicesCommercial Services Provides business support services | Commercial Services |
RIT Capital Partners Plc (Private Equity)
RIT Capital Partners Plc (Private Equity) Investment ManagersFinance RIT Capital Partners invests in public & private companies and funds located across the globe. The firm focuses on companies operating in the fields of enterprise software, fintech & financial services, healthcare & life sciences, consumer, AI & advanced technologies and industrials sectors. It provides financing for buyout and growth stage capital requirements. | Finance |
DMC Partners (London) Ltd.
 DMC Partners (London) Ltd. Investment ManagersFinance Engages in investment activities | Finance |
Columbia Business School
 Columbia Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Colony Global Acquisition Corp.
 Colony Global Acquisition Corp. Financial ConglomeratesFinance A blank check company | Finance |
JP Morgan & Co.
 JP Morgan & Co. Financial ConglomeratesFinance Provides financial services | Finance |
Zeno Ventures Management LLC
Zeno Ventures Management LLC Investment ManagersFinance Zeno Ventures invests in companies located across the globe. The firm targets companies operating across a broad range of sectors and industries. It provides financing for early and growth stage capital transactions. | Finance |
President's Council on International Activities
President's Council on International Activities Miscellaneous Commercial ServicesCommercial Services Operates councils on international activities | Commercial Services |
Stemar Capital Partners Ltd.
 Stemar Capital Partners Ltd. Investment ManagersFinance Operates investment and portfolio management company | Finance |
EOS Capital Partners SA
 EOS Capital Partners SA Investment ManagersFinance EOS Capital Partners invests in companies located in Greece. The firm focuses on sectors such as food and beverage, hospitality services, fintech, consumer and retail, industrials, energy efficiency and pharmaceuticals. It participates in growth stage capital requirements. | Finance |
Digital Care Holdings, LLC | |
Imagine Mortgages Ltd.
 Imagine Mortgages Ltd. Finance/Rental/LeasingFinance Provides mortgage finance services | Finance |
Mistral Fertility Clinics SL
 Mistral Fertility Clinics SL Medical/Nursing ServicesHealth Services Operates as a fertility center | Health Services |
Vangest Group
Vangest Group Industrial MachineryProducer Manufacturing Manufactures industrial mold and prototypes | Producer Manufacturing |
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