![Ruth Wertheimer](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>)
Ruth Wertheimer
Founder at
7-Main Ltd.
Net worth: 1 010 M $ as of 2026-05-30
Finance
Profile
Ruth Wertheimer is the founder of 7-Industries Holding BV, founded in 2007.
Ms. Wertheimer is the founder of 7-Main Ltd., founded in 2002, and holds the title of Chairman since 2002.
Known holdings in public companies
| Company | Date | Number of shares | Valuation | Valuation date |
|---|---|---|---|---|
Inficon Holding AG
 Inficon Holding AG Electronic Equipment/InstrumentsElectronic Technology Develops, manufactures and supplies vacuum instrumentation & critical sensor technologies for analysis, measurement and control in the semiconductor industry 10.03% | 2025-12-30 | 2,452,833 ( 10.03% ) | 512 M $ | 2026-05-30 |
CAREL INDUSTRIES SPA 7.66% | 2026-05-20 | 8,614,806 ( 7.66% ) | 313 M $ | 2026-05-30 |
INDUSTRIE DE NORA SPA 14.79% | 2025-04-19 | 7,572,407 ( 14.79% ) | 67 M $ | 2026-05-30 |
SECO SpA
 SECO SpA Computer Processing HardwareElectronic Technology Develops embedded microcomputers, integrated systems and solutions 11.33% | 2025-04-27 | 15,075,374 ( 11.33% ) | 48 M $ | 2026-05-30 |
LUMIBIRD SA 6.19% | 2025-02-28 | 1,391,138 ( 6.19% ) | 44 M $ | 2026-05-30 |
GVS S.P.A 2.89% | 2025-05-07 | 5,465,000 ( 2.89% ) | 27 M $ | 2026-05-30 |
Ruth Wertheimer active positions
| Companies | Position | Start |
|---|---|---|
7-Main Ltd.
 7-Main Ltd. Investment ManagersFinance Provides investment management services | Founder | 2002-07-02 |
7-Industries Holding BV
 7-Industries Holding BV Investment ManagersFinance 7-Industries invests in middle market companies located across the globe. The firm targets companies operating in the fields of industrial & life science sectors. It provides financing for late stage capital requirements and also acquires minority position. | Founder | 2006-12-31 |
Experiences
Positions held
Active
Inactive
Listed companies
Private companies
Linked companies
| Private companies | 2 |
|---|---|
7-Main Ltd.
7-Main Ltd. Investment ManagersFinance Provides investment management services | Finance |
7-Industries Holding BV
7-Industries Holding BV Investment ManagersFinance 7-Industries invests in middle market companies located across the globe. The firm targets companies operating in the fields of industrial & life science sectors. It provides financing for late stage capital requirements and also acquires minority position. | Finance |
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- Ruth Wertheimer
