![David Duncan](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>)
Patrimonio netto: 1 M $ in data 31/05/2026
David R.
Duncan is Chairman, CEO & Managing Partner at Twomey Cellars since 2002.
Holds the position of Chairman at St. Helena Hospital Foundation.
Serves as Chairman of Napa Valley Vintners Association since 2014.
Executive Chairman at Silver Oak Cellars since 2002.
Co-Chairman of Auction Napa Valley since 2014.
Director at Bioincept LLC.
Independent Director at First Western Financial, Inc. since 2011.
Former Chief Executive Officer & Director of Duncan Oil, Inc. Former Chairman & Member of Young Presidents Organization, Inc. (Northern California).
Former Director of Terra Midstream LLC.
Completed undergraduate studies at the University of Notre Dame.
Earned an MBA from the University of Denver.
| Società | Data | Numero di azioni | Valutazione | Data di valutazione |
|---|---|---|---|---|
| 03/06/2026 | 44.652 ( 0,46% ) | 1 M $ | 31/05/2026 |
| Società | Posizione | Inizio |
|---|---|---|
| FIRST WESTERN FINANCIAL, INC. | Direttore/Membro del Consiglio | 01/01/2011 |
Silver Oak Cellars
 Silver Oak Cellars Beverages: AlcoholicConsumer Non-Durables Operates as a wine maker | Presidente | 01/01/2002 |
Twomey Cellars
 Twomey Cellars Beverages: AlcoholicConsumer Non-Durables Produces and sells wine through online | Amministratore Delegato | 01/01/2002 |
St. Helena Hospital Foundation
 St. Helena Hospital Foundation Miscellaneous Commercial ServicesCommercial Services Operates as a non-profit acute care hospital | Presidente | - |
Napa Valley Vintners Association
 Napa Valley Vintners Association Miscellaneous Commercial ServicesCommercial Services Operates nonprofit trade association for wine producers | Presidente | 01/01/2014 |
Auction Napa Valley
 Auction Napa Valley Miscellaneous Commercial ServicesCommercial Services Engages in raising of funds | Presidente | 01/01/2014 |
Bioincept LLC
 Bioincept LLC Miscellaneous Commercial ServicesCommercial Services Provides pre-implantation factor technologies | Direttore/Membro del Consiglio | - |
| Società | Posizione | Fine |
|---|---|---|
Duncan Oil, Inc.
 Duncan Oil, Inc. Wholesale DistributorsDistribution Services Distributes petroleum products and provides residential heating oil and propane delivery, fuel center construction and equipment maintenance services | Amministratore Delegato | - |
Young Presidents Organization, Inc. (Northern California) | Presidente | - |
| ░░░░░ ░░░░░░░░░ ░░░ | ░░░░░░░░░░░░░░░░ ░░░ ░░░░░░░░░ | - |
Attive
Inattive
Società nel listino
Aziende private
Relazioni di 1° grado
Aziende connesse in 1º grado
Uomo
Donna
Amministratori
Dirigenti
| Aziende private | 12 |
|---|---|
University of Notre Dame
 University of Notre Dame Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
Bioincept LLC
Bioincept LLC Miscellaneous Commercial ServicesCommercial Services Provides pre-implantation factor technologies | Commercial Services |
Terra Midstream LLC
 Terra Midstream LLC Oil & Gas ProductionEnergy Minerals Provides natural gas and midstream services | Energy Minerals |
University of Denver
 University of Denver Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
St. Helena Hospital Foundation
St. Helena Hospital Foundation Miscellaneous Commercial ServicesCommercial Services Operates as a non-profit acute care hospital | Commercial Services |
First Western Financial, Inc.
 First Western Financial, Inc. Investment ManagersFinance Operates as a holding company with interests in private banking and investment management services | Finance |
Napa Valley Vintners Association
Napa Valley Vintners Association Miscellaneous Commercial ServicesCommercial Services Operates nonprofit trade association for wine producers | Commercial Services |
Duncan Oil, Inc.
Duncan Oil, Inc. Wholesale DistributorsDistribution Services Distributes petroleum products and provides residential heating oil and propane delivery, fuel center construction and equipment maintenance services | Distribution Services |
Silver Oak Cellars
Silver Oak Cellars Beverages: AlcoholicConsumer Non-Durables Operates as a wine maker | Consumer Non-Durables |
Young Presidents Organization, Inc. (Northern California) | |
Twomey Cellars
Twomey Cellars Beverages: AlcoholicConsumer Non-Durables Produces and sells wine through online | Consumer Non-Durables |
Auction Napa Valley
Auction Napa Valley Miscellaneous Commercial ServicesCommercial Services Engages in raising of funds | Commercial Services |
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