MICHAEL D. LOCKHART

Business address
C/O Armstrong World Industries,, 2500 Columbia Ave., Po Box 3001, Lancaster, PA, 17604-3001
Top holdings (ownership)
NSC
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MICHAEL D. LOCKHART has filed 136 SEC EDGAR filings since 11 Oct 2006

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 22 Feb 2024 20 Feb 2024 001-08339
4 Open Document Open Filing 01 Feb 2024 30 Jan 2024 001-08339
4 Open Document Open Filing 30 Jan 2024 26 Jan 2024 001-08339
4 Open Document Open Filing 22 Nov 2023 20 Nov 2023 001-08339
4 Open Document Open Filing 22 Aug 2023 21 Aug 2023 001-08339
4 Open Document Open Filing 23 May 2023 20 May 2023 001-08339
4 Open Document Open Filing 23 Feb 2023 21 Feb 2023 001-08339
4 Open Document Open Filing 30 Jan 2023 26 Jan 2023 001-08339
4 Open Document Open Filing 22 Nov 2022 21 Nov 2022 001-08339
4 Open Document Open Filing 23 Aug 2022 20 Aug 2022 001-08339
4 Open Document Open Filing 24 May 2022 20 May 2022 001-08339
4 Open Document Open Filing 23 Feb 2022 21 Feb 2022 001-08339
4 Open Document Open Filing 31 Jan 2022 27 Jan 2022 001-08339
4 Open Document Open Filing 23 Nov 2021 19 Nov 2021 001-08339
4 Open Document Open Filing 23 Aug 2021 20 Aug 2021 001-08339
4 Open Document Open Filing 21 May 2021 20 May 2021 001-08339
4 Open Document Open Filing 12 Mar 2021 10 Mar 2021 001-08339
4 Open Document Open Filing 02 Feb 2021 01 Feb 2021 001-08339
4 Open Document Open Filing 29 Jan 2021 28 Jan 2021 001-08339
4 Open Document Open Filing 11 Dec 2020 10 Dec 2020 001-08339
4 Open Document Open Filing 11 Sep 2020 10 Sep 2020 001-08339
4 Open Document Open Filing 12 Jun 2020 10 Jun 2020 001-08339
4 Open Document Open Filing 12 Mar 2020 10 Mar 2020 001-08339
4 Open Document Open Filing 03 Feb 2020 30 Jan 2020 001-08339
4 Open Document Open Filing 12 Dec 2019 10 Dec 2019 001-08339
4 Open Document Open Filing 12 Sep 2019 10 Sep 2019 001-08339
4 Open Document Open Filing 12 Jun 2019 10 Jun 2019 001-08339
4 Open Document Open Filing 13 Mar 2019 11 Mar 2019 001-08339
4/A Open Document Open Filing 15 Feb 2019 28 Jan 2019 001-08339
4 Open Document Open Filing 30 Jan 2019 28 Jan 2019 001-08339
4 Open Document Open Filing 02 Jan 2019 31 Dec 2018 001-08339
4 Open Document Open Filing 11 Dec 2018 10 Dec 2018 001-08339
4 Open Document Open Filing 02 Oct 2018 28 Sep 2018 001-08339
4 Open Document Open Filing 11 Sep 2018 10 Sep 2018 001-08339
4 Open Document Open Filing 03 Jul 2018 29 Jun 2018 001-08339
4 Open Document Open Filing 12 Jun 2018 11 Jun 2018 001-08339
4 Open Document Open Filing 02 Apr 2018 29 Mar 2018 001-08339
4 Open Document Open Filing 13 Mar 2018 09 Mar 2018 001-08339
4 Open Document Open Filing 29 Jan 2018 25 Jan 2018 001-08339
4 Open Document Open Filing 03 Jan 2018 29 Dec 2017 001-08339
4 Open Document Open Filing 13 Dec 2017 11 Dec 2017 001-08339
4 Open Document Open Filing 03 Oct 2017 29 Sep 2017 001-08339
4/A Open Document Open Filing 13 Sep 2017 11 Sep 2017 001-08339
4 Open Document Open Filing 13 Sep 2017 11 Sep 2017 001-08339
4 Open Document Open Filing 05 Jul 2017 30 Jun 2017 001-08339
4 Open Document Open Filing 13 Jun 2017 10 Jun 2017 001-08339
4 Open Document Open Filing 16 May 2017 05 May 2017 001-08339
4 Open Document Open Filing 04 Apr 2017 31 Mar 2017 001-08339
4 Open Document Open Filing 14 Mar 2017 10 Mar 2017 001-08339
5 Open Document Open Filing 10 Feb 2017 31 Dec 2016 001-08339
4 Open Document Open Filing 06 Feb 2017 02 Feb 2017 001-08339
4 Open Document Open Filing 27 Jan 2017 26 Jan 2017 001-08339
4 Open Document Open Filing 03 Jan 2017 30 Dec 2016 001-08339
4 Open Document Open Filing 13 Dec 2016 10 Dec 2016 001-08339
4 Open Document Open Filing 04 Oct 2016 30 Sep 2016 001-08339
4 Open Document Open Filing 13 Sep 2016 10 Sep 2016 001-08339
4 Open Document Open Filing 05 Jul 2016 30 Jun 2016 001-08339
4 Open Document Open Filing 14 Jun 2016 10 Jun 2016 001-08339
4 Open Document Open Filing 01 Apr 2016 31 Mar 2016 001-08339
4 Open Document Open Filing 14 Mar 2016 10 Mar 2016 001-08339
4 Open Document Open Filing 29 Jan 2016 28 Jan 2016 001-08339
4 Open Document Open Filing 04 Jan 2016 30 Dec 2015 001-08339
4 Open Document Open Filing 14 Dec 2015 10 Dec 2015 001-08339
4 Open Document Open Filing 02 Oct 2015 30 Sep 2015 001-08339
4 Open Document Open Filing 14 Sep 2015 10 Sep 2015 001-08339
4 Open Document Open Filing 02 Jul 2015 30 Jun 2015 001-08339
4 Open Document Open Filing 12 Jun 2015 10 Jun 2015 001-08339
4 Open Document Open Filing 02 Apr 2015 31 Mar 2015 001-08339
4 Open Document Open Filing 12 Mar 2015 10 Mar 2015 001-08339
4 Open Document Open Filing 29 Jan 2015 27 Jan 2015 001-08339
4 Open Document Open Filing 02 Jan 2015 31 Dec 2014 001-08339
4 Open Document Open Filing 12 Dec 2014 10 Dec 2014 001-08339
4 Open Document Open Filing 02 Oct 2014 30 Sep 2014 001-08339
4 Open Document Open Filing 12 Sep 2014 10 Sep 2014 001-08339
4 Open Document Open Filing 02 Jul 2014 30 Jun 2014 001-08339
4 Open Document Open Filing 12 Jun 2014 10 Jun 2014 001-08339
4 Open Document Open Filing 02 Apr 2014 31 Mar 2014 001-08339
4 Open Document Open Filing 12 Mar 2014 10 Mar 2014 001-08339
4 Open Document Open Filing 24 Jan 2014 23 Jan 2014 001-08339
4 Open Document Open Filing 03 Jan 2014 31 Dec 2013 001-08339