MARK A. MCCOLLUM

Business address
2801 Post Oak Blvd., Suite 600, Houston, TX, 77002
Top holdings (ownership)
WLK and SDRL
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MARK A. MCCOLLUM has filed 114 SEC EDGAR filings since 10 Jul 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 4 11 Aug 2025 08 Aug 2025 001-32260
4 Open Document Open Filing 4 16 May 2025 14 May 2025 001-39327
4 Open Document Open Filing 4 21 Apr 2025 17 Apr 2025 001-39327
3 Open Document Open Filing 3 02 Jan 2025 01 Jan 2025 001-39327
4 Open Document Open Filing 4 22 Nov 2024 22 Nov 2024 001-05153
4 Open Document Open Filing 4 12 Aug 2024 09 Aug 2024 001-32260
4 Open Document Open Filing FORM 4 05 Mar 2024 01 Mar 2024 001-05153
4 Open Document Open Filing FORM 4 SUBMISSION 14 Aug 2023 11 Aug 2023 001-32260
4 Open Document Open Filing FORM 4 03 Mar 2023 01 Mar 2023 001-05153
4 Open Document Open Filing FORM 4 02 Dec 2022 01 Dec 2022 001-05153
3 Open Document Open Filing FORM 3 01 Dec 2022 01 Dec 2022 001-05153
4 Open Document Open Filing FORM 4 15 Aug 2022 12 Aug 2022 001-32260
4 Open Document Open Filing FORM 4 04 Mar 2022 03 Mar 2022 001-32260
4 Open Document Open Filing FORM 4 16 Aug 2021 13 Aug 2021 001-32260
4 Open Document Open Filing FORM 4 17 Aug 2020 14 Aug 2020 001-32260
4 Open Document Open Filing FORM 4 17 Dec 2019 13 Dec 2019 001-36504
4 Open Document Open Filing FORM 4 19 Aug 2019 16 Aug 2019 001-32260
4 Open Document Open Filing FORM 4 20 May 2019 18 May 2019 001-32260
4 Open Document Open Filing FORM 4 25 Apr 2019 24 Apr 2019 001-36504
4 Open Document Open Filing FORM 4 04 Feb 2019 31 Jan 2019 001-36504
4 Open Document Open Filing FORM 4 20 Aug 2018 17 Aug 2018 001-32260
4 Open Document Open Filing FORM 4 21 May 2018 18 May 2018 001-32260
3 Open Document Open Filing FORM 3 21 May 2018 18 May 2018 001-32260
4 Open Document Open Filing FORM 4 27 Apr 2018 26 Apr 2018 001-33666
4 Open Document Open Filing FORM 4 26 Apr 2018 24 Apr 2018 001-36504
4 Open Document Open Filing FORM 4 05 Mar 2018 02 Mar 2018 001-33666
4 Open Document Open Filing FORM 4 02 Feb 2018 31 Jan 2018 001-36504
4 Open Document Open Filing FORM 4 25 Apr 2017 24 Apr 2017 001-36504
3 Open Document Open Filing FORM 3 25 Apr 2017 24 Apr 2017 001-36504
4 Open Document Open Filing FORM 4 06 Mar 2017 03 Mar 2017 001-33666
4 Open Document Open Filing PRIMARY DOCUMENT 01 Mar 2017 27 Feb 2017 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 09 Dec 2016 07 Dec 2016 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 08 Dec 2016 06 Dec 2016 001-03492
4 Open Document Open Filing FORM 4 07 Mar 2016 04 Mar 2016 001-33666
4 Open Document Open Filing PRIMARY DOCUMENT 10 Dec 2015 08 Dec 2015 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 09 Dec 2015 07 Dec 2015 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 07 Dec 2015 03 Dec 2015 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 04 Dec 2015 02 Dec 2015 001-03492
4 Open Document Open Filing FORM 4 05 Mar 2015 04 Mar 2015 001-33666
4 Open Document Open Filing PRIMARY DOCUMENT 10 Dec 2014 08 Dec 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 05 Dec 2014 03 Dec 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jul 2014 15 Jul 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 24 Jun 2014 20 Jun 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 27 May 2014 23 May 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 22 Apr 2014 21 Apr 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 07 Apr 2014 03 Apr 2014 001-03492
4 Open Document Open Filing PRIMARY DOCUMENT 25 Mar 2014 21 Mar 2014 001-03492
4 Open Document Open Filing FORM 4 06 Mar 2014 04 Mar 2014 001-33666
4 Open Document Open Filing PRIMARY DOCUMENT 27 Feb 2014 25 Feb 2014 001-03492