Insider Activity of HELDERMAN MARK W
Biography of HELDERMAN MARK W
No biography is available at this moment.
No biography is available at this moment.
| 2022-03-03 | Sale | ONEOK, Inc. OKE | 30,000 0.0067% | $67.27 | $2.02M | -2.01% | ||
| 2020-03-18 | ONEOK, Inc. OKE | director | 30,000 0.0062% | $13.06 | $391,788 | +111.44% | ||
| 2019-12-17 | ONEOK, Inc. OKE | director | 12,188 0.003% | $73.95 | $901,315 | -55.59% |