![Jean-Marc Gilson](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>)
Jean-Marc Gilson
Net worth: 224 257 $ as of 2025-12-30
Profile
Mr. Jean-Marc Gilson is a President & Representative Director at Mitsubishi Chemical Holdings Corp. and a Chief Executive Officer at Roquette Frères SA. He is on the Board of Directors at Mitsubishi Chemical Holdings Corp. and Vantage Specialties, Inc. Mr. Gilson was previously employed as a President & Chief Executive Officer by Avantor Performance Materials, Inc., an EVP & General Manager-Specialty Chemicals by Dow Silicones Corp., and a Vice Chairman & Chief Operating Officer by NuSil Technology LLC. He received his graduate degree from the University of Liege and an MBA from the International Institute for Management Development.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
| 2025-08-26 | 11,803 ( 0.03% ) | 224 257 $ | 2025-12-30 |
Jean-Marc Gilson active positions
| Companies | Position | Start |
|---|---|---|
| WESTLAKE CORPORATION | Chief Executive Officer | 2024-07-14 |
| WESTLAKE CHEMICAL PARTNERS LP | Chief Executive Officer | 2024-06-30 |
| AXIALL CORP | Chief Executive Officer | - |
Vantage Specialties, Inc.
 Vantage Specialties, Inc. Chemicals: SpecialtyProcess Industries Manufactures chemicals and industrial cleaning agents | Director/Board Member | 2010-11-07 |
Westlake Chemical Partners GP LLC
 Westlake Chemical Partners GP LLC Operates, acquires and develops ethylene production facilities and related assets | Chief Executive Officer | 2024-07-14 |
Former positions of Jean-Marc Gilson
| Companies | Position | End |
|---|---|---|
| MITSUBISHI CHEMICAL GROUP CORPORATION | Chief Executive Officer | 2024-03-31 |
Roquette Frères SA
 Roquette Frères SA Pharmaceuticals: MajorHealth Technology Manufactures plant-based ingredients and pharmaceutical excipients | Chief Executive Officer | 2020-12-13 |
Avantor Performance Materials LLC
 Avantor Performance Materials LLC Chemicals: Major DiversifiedProcess Industries Manufactures and markets chemicals for the biopharmaceutical industry | Chief Executive Officer | - |
NuSil Technology LLC
 NuSil Technology LLC Chemicals: SpecialtyProcess Industries Manufactures silicone compounds for aerospace, healthcare, electronics and other applications | Chief Operating Officer | - |
| ░░░ ░░░░░░░░░ ░░░░░ | ░░░░░░░░░ ░░░░░░░░░░░░░░░░░ | - |
Training of Jean-Marc Gilson
Experiences
Positions held
Connections
1st degree connections
1st degree companies
Male
Female
Members of the board
Executives
Linked companies
| Private companies | 12 |
|---|---|
Dow Silicones Corp.
 Dow Silicones Corp. Manufactures silicones products | |
Westlake Chlor-Vinyls Corp.
 Westlake Chlor-Vinyls Corp. Manufactures and distributes chemicals | |
Westlake Corp.
 Westlake Corp. Chemicals: SpecialtyProcess Industries Manufactures and supplies essential materials and housing & infrastructure products | Process Industries |
Westlake Chemical Partners LP
 Westlake Chemical Partners LP Operates, acquires and develops ethylene production facilities and related assets | |
Roquette Frères SA
Roquette Frères SA Pharmaceuticals: MajorHealth Technology Manufactures plant-based ingredients and pharmaceutical excipients | Health Technology |
Vantage Specialties, Inc.
Vantage Specialties, Inc. Chemicals: SpecialtyProcess Industries Manufactures chemicals and industrial cleaning agents | Process Industries |
NuSil Technology LLC
NuSil Technology LLC Chemicals: SpecialtyProcess Industries Manufactures silicone compounds for aerospace, healthcare, electronics and other applications | Process Industries |
Mitsubishi Chemical Group Corp.
 Mitsubishi Chemical Group Corp. Chemicals: Major DiversifiedProcess Industries Operates as an investment holding company which includes the development of group strategies and allocation of financial resources | Process Industries |
International Institute for Management Development
 International Institute for Management Development Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
University of Liege
 University of Liege Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Avantor Performance Materials LLC
Avantor Performance Materials LLC Chemicals: Major DiversifiedProcess Industries Manufactures and markets chemicals for the biopharmaceutical industry | Process Industries |
Westlake Chemical Partners GP LLC
Westlake Chemical Partners GP LLC Operates, acquires and develops ethylene production facilities and related assets |
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