MARK W. HELDERMAN

Business address
100 W. 5 Th St., Tulsa, OK, 74102
Top holdings (ownership)
OKE
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MARK W. HELDERMAN has filed 12 SEC EDGAR filings since 20 Feb 2019

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing FORM 4 28 May 2025 23 May 2025 001-13643
4 Open Document Open Filing FORM 4 24 May 2024 22 May 2024 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 26 May 2023 24 May 2023 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 27 May 2022 25 May 2022 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 04 Mar 2022 03 Mar 2022 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 28 May 2021 26 May 2021 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 21 May 2020 20 May 2020 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 19 Mar 2020 18 Mar 2020 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 17 Dec 2019 17 Dec 2019 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 24 May 2019 22 May 2019 001-13643
4 Open Document Open Filing PRIMARY DOCUMENT 20 Feb 2019 19 Feb 2019 001-13643
3 Open Document Open Filing PRIMARY DOCUMENT 20 Feb 2019 19 Feb 2019 001-13643