Mark W. Helderman is Director at ONEOK INC /NEW/ (OKE). They have made 3 open-market trades across 1 company since 2019, most recently 2026-05-20.
CIK 0001766621
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
2 open-market purchases totalling $1.3M since 2019, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Shares | Value |
|---|---|---|
| OKE | 38,704 | $3.6M |
Shares reported on the most recent Form 4, priced at the 2026-05-22 close.
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.