WILLIAM M. LAMBERT

Business address
C/O Msa Safety, 1000 Cranberry Woods Drive, Cranberry Twp, PA, 16066
Top holdings (ownership)
MSA and KMT
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WILLIAM M. LAMBERT has filed 154 SEC EDGAR filings since 21 Jan 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
4 Open Document Open Filing 16 Dec 2025 12 Dec 2025 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 19 Aug 2025 15 Aug 2025 001-05318
4 Open Document Open Filing 19 May 2025 16 May 2025 001-15579
4 Open Document Open Filing 19 Nov 2024 15 Nov 2024 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 19 Aug 2024 15 Aug 2024 001-05318
4 Open Document Open Filing 16 May 2024 15 May 2024 001-15579
4 Open Document Open Filing 29 Nov 2023 27 Nov 2023 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 17 Aug 2023 15 Aug 2023 001-05318
4 Open Document Open Filing 19 May 2023 11 May 2023 001-15579
4/A Open Document Open Filing 06 Apr 2023 15 Nov 2022 001-15579
4 Open Document Open Filing 16 Nov 2022 15 Nov 2022 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 17 Aug 2022 15 Aug 2022 001-05318
4 Open Document Open Filing 11 Aug 2022 09 Aug 2022 001-15579
4 Open Document Open Filing 10 Aug 2022 08 Aug 2022 001-15579
4 Open Document Open Filing 20 May 2022 18 May 2022 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 05 May 2022 04 May 2022 001-05318
4 Open Document Open Filing 23 Nov 2021 19 Nov 2021 001-15579
4 Open Document Open Filing 16 Sep 2021 16 Sep 2021 001-15579
4 Open Document Open Filing 26 Aug 2021 25 Aug 2021 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 17 Aug 2021 15 Aug 2021 001-05318
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2021 02 Aug 2021 001-05318
4 Open Document Open Filing 25 May 2021 24 May 2021 001-15579
4 Open Document Open Filing 22 Dec 2020 08 Mar 2020 001-15579
4 Open Document Open Filing 09 Dec 2020 07 Dec 2020 001-15579
4 Open Document Open Filing 30 Oct 2020 26 Oct 2020 001-15579
4 Open Document Open Filing 29 Oct 2020 04 Mar 2020 001-15579
4 Open Document Open Filing 25 Aug 2020 24 Aug 2020 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 17 Aug 2020 14 Aug 2020 001-05318
4 Open Document Open Filing 11 Aug 2020 10 Aug 2020 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2020 31 Jul 2020 001-05318
4 Open Document Open Filing 18 May 2020 15 May 2020 001-15579
4 Open Document Open Filing 23 Mar 2020 20 Mar 2020 001-15579
4 Open Document Open Filing 05 Mar 2020 04 Mar 2020 001-15579
4 Open Document Open Filing 10 Dec 2019 06 Dec 2019 001-15579
4 Open Document Open Filing 31 Oct 2019 30 Oct 2019 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 16 Aug 2019 15 Aug 2019 001-05318
4 Open Document Open Filing PRIMARY DOCUMENT 02 Aug 2019 01 Aug 2019 001-05318
4 Open Document Open Filing 23 May 2019 22 May 2019 001-15579
4 Open Document Open Filing 14 Mar 2019 13 Mar 2019 001-15579
4 Open Document Open Filing 12 Mar 2019 08 Mar 2019 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 03 Jan 2019 01 Jan 2019 001-03551
4 Open Document Open Filing 17 Dec 2018 14 Dec 2018 001-15579
4 Open Document Open Filing 03 Dec 2018 28 Nov 2018 001-15579
4 Open Document Open Filing 28 Nov 2018 26 Nov 2018 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 15 Nov 2018 13 Nov 2018 001-03551
3 Open Document Open Filing PRIMARY DOCUMENT 15 Nov 2018 12 Nov 2018 001-03551
4 Open Document Open Filing 26 Sep 2018 24 Sep 2018 001-15579
4/A Open Document Open Filing PRIMARY DOCUMENT 10 Aug 2018 01 Aug 2018 001-05318
4 Open Document Open Filing PRIMARY DOCUMENT 02 Aug 2018 01 Aug 2018 001-05318
4 Open Document Open Filing 20 Jun 2018 19 Jun 2018 001-15579
4 Open Document Open Filing 19 Jun 2018 15 Jun 2018 001-15579
4 Open Document Open Filing 05 Jun 2018 31 May 2018 001-15579
4 Open Document Open Filing 04 Jun 2018 01 Jun 2018 001-15579
4 Open Document Open Filing 21 May 2018 18 May 2018 001-15579
4 Open Document Open Filing 12 Mar 2018 08 Mar 2018 001-15579
4 Open Document Open Filing 06 Mar 2018 05 Mar 2018 001-15579
4 Open Document Open Filing 26 Feb 2018 23 Feb 2018 001-15579
4 Open Document Open Filing 28 Nov 2017 27 Nov 2017 001-15579
4 Open Document Open Filing 24 Nov 2017 22 Nov 2017 001-15579
4 Open Document Open Filing 21 Nov 2017 20 Nov 2017 001-15579
4 Open Document Open Filing 17 Nov 2017 16 Nov 2017 001-15579
4 Open Document Open Filing 07 Nov 2017 03 Nov 2017 001-15579
4 Open Document Open Filing 07 Sep 2017 01 Sep 2017 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2017 01 Aug 2017 001-05318
4/A Open Document Open Filing 11 May 2017 05 May 2017 001-15579
4 Open Document Open Filing 10 May 2017 08 May 2017 001-15579
4 Open Document Open Filing 09 May 2017 05 May 2017 001-15579
4 Open Document Open Filing 08 May 2017 04 May 2017 001-15579
4 Open Document Open Filing 04 May 2017 02 May 2017 001-15579
4 Open Document Open Filing 02 May 2017 28 Apr 2017 001-15579
4 Open Document Open Filing 15 Mar 2017 13 Mar 2017 001-15579
4 Open Document Open Filing 14 Mar 2017 10 Mar 2017 001-15579
4/A Open Document Open Filing 14 Mar 2017 06 Mar 2017 001-15579
4 Open Document Open Filing 10 Mar 2017 08 Mar 2017 001-15579
4 Open Document Open Filing 09 Mar 2017 08 Mar 2017 001-15579
4 Open Document Open Filing 08 Mar 2017 06 Mar 2017 001-15579
4 Open Document Open Filing 02 Mar 2017 28 Feb 2017 001-15579
4 Open Document Open Filing 10 Aug 2016 05 Aug 2016 001-15579
4 Open Document Open Filing 03 Aug 2016 02 Aug 2016 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 03 Aug 2016 01 Aug 2016 001-05318
4 Open Document Open Filing 10 Mar 2016 08 Mar 2016 001-15579
4 Open Document Open Filing PRIMARY DOCUMENT 03 Mar 2016 01 Mar 2016 001-05318
4 Open Document Open Filing 03 Mar 2016 01 Mar 2016 001-15579
3 Open Document Open Filing PRIMARY DOCUMENT 03 Mar 2016 01 Mar 2016 001-05318
4 Open Document Open Filing 09 Dec 2015 08 Dec 2015 001-15579
4 Open Document Open Filing 20 Nov 2015 18 Nov 2015 001-15579
4/A Open Document Open Filing 16 Mar 2015 08 Mar 2015 001-15579
4 Open Document Open Filing 10 Mar 2015 08 Mar 2015 001-15579
4/A Open Document Open Filing 06 Mar 2015 25 Feb 2015 001-15579
4 Open Document Open Filing 27 Feb 2015 25 Feb 2015 001-15579
4 Open Document Open Filing 16 Sep 2014 16 Sep 2014 001-15579
4/A Open Document Open Filing 09 Sep 2014 08 Sep 2014 001-15579
4 Open Document Open Filing 08 Sep 2014 08 Sep 2014 001-15579
4 Open Document Open Filing 05 Sep 2014 03 Sep 2014 001-15579
4 Open Document Open Filing 11 Mar 2014 08 Mar 2014 001-15579
4 Open Document Open Filing 28 Feb 2014 26 Feb 2014 001-15579
4 Open Document Open Filing 03 Jan 2014 02 Jan 2014 001-15579
4 Open Document Open Filing 02 Jan 2014 27 Dec 2013 001-15579