![Mark Helderman](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>)
Mark Helderman
Direttore/Membro del Consiglio presso
ONEOK, INC.
Patrimonio netto: 4 M $ in data 31/08/2026
Profilo
Mark William Helderman is an Independent Director at ONEOK, Inc. since 2019.
Mr. Helderman was Managing Director & Portfolio Manager at Sasco Capital, Inc. from 1997 to 2019.
Mr. Helderman completed undergraduate studies at the University of Dayton in 1981.
Partecipazioni note in società pubbliche
| Società | Data | Numero di azioni | Valutazione | Data di valutazione |
|---|---|---|---|---|
ONEOK, INC. 0,01% | 20/05/2026 | 38.704 ( 0,01% ) | 4 M $ | 31/08/2026 |
Posizioni attive di Mark Helderman
| Società | Posizione | Inizio |
|---|---|---|
| ONEOK, INC. | Direttore/Membro del Consiglio | 19/02/2019 |
Precedenti posizioni note di Mark Helderman
| Società | Posizione | Fine |
|---|---|---|
Sasco Capital, Inc.
 Sasco Capital, Inc. Investment ManagersFinance Sasco Capital employs a time-tested, contrarian approach to value investing in the Small, Smid and Mid-Cap market segments. The firm utilizes fundamental, bottom-up security analysis based on a proprietary screening process, individual company research, and meetings with senior management. They invest in out-of-favor, underperforming companies with restructuring and transformational potential. The investment strategy has a long-term investment horizon and low turnover. | Gestore di Portafoglio-Azioni | 01/01/2019 |
Formazione di Mark Helderman
Esperienze
Posizioni ricoperte
Attive
Inattive
Società nel listino
Aziende private
Relazioni
66
Relazioni di 1° grado
3
Aziende connesse in 1º grado
Uomo
Donna
Amministratori
Dirigenti
Società collegate
| Aziende private | 3 |
|---|---|
ONEOK, Inc.
 ONEOK, Inc. Oil & Gas PipelinesIndustrial Services Engages in gathering, processing, sale, transportation and storage of natural gas | Industrial Services |
Sasco Capital, Inc.
Sasco Capital, Inc. Investment ManagersFinance Sasco Capital employs a time-tested, contrarian approach to value investing in the Small, Smid and Mid-Cap market segments. The firm utilizes fundamental, bottom-up security analysis based on a proprietary screening process, individual company research, and meetings with senior management. They invest in out-of-favor, underperforming companies with restructuring and transformational potential. The investment strategy has a long-term investment horizon and low turnover. | Finance |
University of Dayton
 University of Dayton Other Consumer ServicesConsumer Services Functions as a College/University | Consumer Services |
