MATTHEW E. MASSENGILL

Business address
C/O Western Digital Corporation, 5601 Great Oaks Parkway, San Jose, CA, 95119
Top holdings (ownership)
WDC and SNDK
⭐ Add to watchlist ⭐
Get insider transactions for this reporting owner
MATTHEW E. MASSENGILL has filed 145 SEC EDGAR filings since 23 Sep 2003

Latest Filings

Form type Document Filing Description Filing date Reporting date File number(s)
144 Open Document Open Filing 07 Jan 2026
144 Open Document Open Filing 06 Jan 2026
4 Open Document Open Filing PRIMARY DOCUMENT 22 Dec 2025 18 Dec 2025 001-08703
144 Open Document Open Filing 26 Nov 2025
144 Open Document Open Filing 25 Nov 2025
144 Open Document Open Filing 24 Nov 2025
4 Open Document Open Filing PRIMARY DOCUMENT 21 Nov 2025 20 Nov 2025 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 22 Sep 2025 18 Sep 2025 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 23 Jun 2025 18 Jun 2025 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 04 Mar 2025 03 Mar 2025 001-42420
3 Open Document Open Filing PRIMARY DOCUMENT 31 Jan 2025 31 Jan 2025 001-42420
4 Open Document Open Filing PRIMARY DOCUMENT 22 Nov 2024 20 Nov 2024 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Nov 2023 15 Nov 2023 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Nov 2022 16 Nov 2022 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Nov 2021 16 Nov 2021 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Nov 2020 18 Nov 2020 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Nov 2020 14 Nov 2020 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 21 Apr 2020 17 Apr 2020 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 23 Jan 2020 21 Jan 2020 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 15 Nov 2019 14 Nov 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 12 Nov 2019 07 Nov 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 24 Oct 2019 22 Oct 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jul 2019 15 Jul 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Apr 2019 15 Apr 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Jan 2019 14 Jan 2019 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 08 Nov 2018 07 Nov 2018 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 06 Nov 2018 02 Nov 2018 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Oct 2018 15 Oct 2018 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 18 Jul 2018 16 Jul 2018 001-08703
4 Open Document Open Filing FORM 4 30 May 2018 29 May 2018 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 18 Apr 2018 16 Apr 2018 001-08703
4 Open Document Open Filing FORM 4 15 Feb 2018 13 Feb 2018 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jan 2018 16 Jan 2018 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 09 Nov 2017 08 Nov 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 03 Nov 2017 01 Nov 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 01 Nov 2017 30 Oct 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Oct 2017 16 Oct 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Jul 2017 17 Jul 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Apr 2017 17 Apr 2017 001-08703
4 Open Document Open Filing FORM 4 16 Feb 2017 14 Feb 2017 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 19 Jan 2017 17 Jan 2017 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 08 Nov 2016 07 Nov 2016 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 07 Nov 2016 03 Nov 2016 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Oct 2016 17 Oct 2016 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Jul 2016 15 Jul 2016 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 18 Apr 2016 15 Apr 2016 001-08703
4 Open Document Open Filing FORM 4 11 Feb 2016 09 Feb 2016 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 20 Jan 2016 15 Jan 2016 001-08703
4 Open Document Open Filing FORM 4 23 Nov 2015 19 Nov 2015 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 10 Nov 2015 06 Nov 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 05 Nov 2015 03 Nov 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Oct 2015 15 Oct 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Jul 2015 15 Jul 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 20 Apr 2015 16 Apr 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Feb 2015 12 Feb 2015 001-08703
4 Open Document Open Filing FORM 4 12 Feb 2015 10 Feb 2015 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 20 Jan 2015 15 Jan 2015 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 12 Nov 2014 10 Nov 2014 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 06 Nov 2014 04 Nov 2014 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Oct 2014 15 Oct 2014 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 16 Jul 2014 15 Jul 2014 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 05 Jun 2014 03 Jun 2014 001-34133
4 Open Document Open Filing PRIMARY DOCUMENT 17 Apr 2014 15 Apr 2014 001-08703
4 Open Document Open Filing FORM 4 12 Feb 2014 11 Feb 2014 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jan 2014 15 Jan 2014 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 19 Nov 2013 15 Nov 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 14 Nov 2013 14 Nov 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 12 Nov 2013 08 Nov 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Oct 2013 15 Oct 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Jul 2013 15 Jul 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 06 Jun 2013 04 Jun 2013 001-34133
4 Open Document Open Filing PRIMARY DOCUMENT 16 Apr 2013 15 Apr 2013 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 20 Mar 2013 18 Mar 2013 001-08703
4 Open Document Open Filing FORM 4 14 Feb 2013 27 Dec 2012 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 28 Dec 2012 26 Dec 2012 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 10 Dec 2012 07 Dec 2012 001-08703
4 Open Document Open Filing FORM 4 07 Dec 2012 06 Dec 2012 000-08866
4 Open Document Open Filing PRIMARY DOCUMENT 13 Nov 2012 08 Nov 2012 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 17 Oct 2012 15 Oct 2012 001-08703
4 Open Document Open Filing PRIMARY DOCUMENT 23 Aug 2012 21 Aug 2012 001-34133
4 Open Document Open Filing 20 Aug 2012 17 Aug 2012 000-08866
4 Open Document Open Filing 02 Feb 2012 31 Jan 2012 000-08866