![Sijmen de Vries](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>)
Sijmen de Vries
Director/Board Member at
BIODEXA PHARMACEUTICALS PLC
Net worth: - $ as of 2026-05-30
Profile
Sijmen de Vries is currently Chief Executive Officer at Pharming Intellectual Property BV, Non-Executive Director at Sylus Pharmaceuticals Ltd. since 2010, Independent Non-Executive Director at Biodexa Pharmaceuticals Plc since 2014, and Finish Partner at BioConnection BV.
Former roles include Chief Executive Officer at Morphochem AG and 4-Antibody AG, Executive Director at Pharming Group NV from 2008 to 2025, and Non-Executive Director at Biodexa Ltd. from 2004 to 2015.
Education includes a doctorate from the University of Amsterdam and an MBA from Ashridge Business School.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2026-03-11 | 0 ( -.--% ) | - $ | 2026-05-30 |
Sijmen de Vries active positions
| Companies | Position | Start |
|---|---|---|
| BIODEXA PHARMACEUTICALS PLC | Director/Board Member | 2014-11-12 |
Sylus Pharmaceuticals Ltd. | Director/Board Member | 2010-06-20 |
Pharming Intellectual Property BV
 Pharming Intellectual Property BV Trucks/Construction/Farm MachineryProducer Manufacturing Manufactures milking equipment | Chief Executive Officer | - |
BioConnection BV
 BioConnection BV BiotechnologyHealth Technology Provides biopharmaceutical services | Corporate Officer/Principal | - |
Former positions of Sijmen de Vries
| Companies | Position | End |
|---|---|---|
| PHARMING GROUP N.V. | Chief Executive Officer | 2025-03-03 |
Midatech Ltd.
 Midatech Ltd. BiotechnologyHealth Technology Engages in discovery and the development of nanomedicine pharmaceutical products | Director/Board Member | 2015-03-12 |
4-Antibody AG
 4-Antibody AG Pharmaceuticals: MajorHealth Technology Discovers and develops drugs | Chief Executive Officer | - |
Morphochem AG
 Morphochem AG Miscellaneous Commercial ServicesCommercial Services Discovers and develops drugs | Chief Executive Officer | - |
Training of Sijmen de Vries
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Connections
26
1st degree connections
10
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 10 |
|---|---|
Pharming Group NV
 Pharming Group NV Pharmaceuticals: MajorHealth Technology Develops and commercializes protein replacement therapies and precision medicines | Health Technology |
Morphochem AG
Morphochem AG Miscellaneous Commercial ServicesCommercial Services Discovers and develops drugs | Commercial Services |
University of Amsterdam
 University of Amsterdam Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
4-Antibody AG
4-Antibody AG Pharmaceuticals: MajorHealth Technology Discovers and develops drugs | Health Technology |
Ashridge Business School
 Ashridge Business School Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
BioConnection BV
BioConnection BV BiotechnologyHealth Technology Provides biopharmaceutical services | Health Technology |
Midatech Ltd.
Midatech Ltd. BiotechnologyHealth Technology Engages in discovery and the development of nanomedicine pharmaceutical products | Health Technology |
Sylus Pharmaceuticals Ltd. | |
Biodexa Pharmaceuticals Plc
 Biodexa Pharmaceuticals Plc Pharmaceuticals: MajorHealth Technology Designs and manufactures nanomedicines | Health Technology |
Pharming Intellectual Property BV
Pharming Intellectual Property BV Trucks/Construction/Farm MachineryProducer Manufacturing Manufactures milking equipment | Producer Manufacturing |
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