![Marc de Sereys](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>)
Net worth: 25 M $ as of 2026-09-29
Marc de Sereys is associated with Thermador Groupe SA and Thermador SA, both of which he founded in 1986 and 1968 respectively.
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
THERMADOR GROUPE 3.41% | 2025-11-27 | 313,960 ( 3.41% ) | 25 M $ | 2026-09-29 |
| Companies | Position | End |
|---|---|---|
Thermador SA
 Thermador SA Real Estate DevelopmentFinance Rents land and real estate properties | Founder | - |
| THERMADOR GROUPE | Founder | - |
Active
Inactive
Listed companies
Private companies
| Private companies | 2 |
|---|---|
Thermador Groupe SA
 Thermador Groupe SA Wholesale DistributorsDistribution Services Distributes domestic pumps and plumbing fittings | Distribution Services |
Thermador SA
Thermador SA Real Estate DevelopmentFinance Rents land and real estate properties | Finance |
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