Helderman Mark W (CIK 0001766621)

Latest company ownership

Role: Director
Shares held
35,665
Last filed at
May 28, 2025
Confidence Score
50.0
2025Q4
Confidence Score History
2019Q4 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Mar 3, 2022 Mar 4, 2022 ONEOK INC /NEW/ Director Sell 17.5 -30,000 -59.20% $2M
Mar 18, 2020 Mar 19, 2020 ONEOK INC /NEW/ Director Buy 97.5 +30,000 300.00% $391.8K
Dec 17, 2019 Dec 17, 2019 ONEOK INC /NEW/ Director Buy 97.5 +6,094 156.02% $450.7K