Entity Type
Individual
Filer Snapshot
Matthew E. Massengill SEC EDGAR Filings
SEC filings, ownership reports, and insider transactions for CIK 0001232826.
Total Filings
152
Latest Filing
19 Mar 2026
Industry
n/a
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Source: SEC Forms 3/4/5
View Source Filing
4 filed on 19 Mar 2026 for CIK 0001232826.
- Business address
- C/O Western Digital Corporation, 5601 Great Oaks Parkway, San Jose, CA, 95119
- Top holdings (ownership)
- WDC and SNDK
Quick Takeaways
- Matthew E. Massengill is an SEC filer tracked under CIK 0001232826.
- 152 filings are listed on this profile.
- Common form coverage includes 4, 144, 144/A and more.
What Changed
- Latest filing: 4 filed on 19 Mar 2026.
- Report period: 18 Mar 2026.
Why This Matters
- You can quote filing dates and form types directly from the SEC record on this page.
- Use this profile before deeper ownership or insider analysis to confirm filing history context.
Source Evidence
Source: SEC Forms 3/4/5
View Source Filing
4 filed on 19 Mar 2026 for CIK 0001232826.
Return Loop
Why revisit this filer page
A newly filed 4 can change the filing history, ownership context, or next research path for Matthew E. Massengill.
- Latest source-backed update
- 4 filed 19 Mar 2026
- Why come back
- Revisit after a new SEC filing appears to compare the updated record with prior filings.
- Latest filing on record: 4 filed 19 Mar 2026.
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Filer freshness comes from SEC EDGAR submission history and related source-backed ownership or portfolio filings when available.
Latest update
What changed recently for Matthew E. Massengill
Latest ownership report period: 18 Mar 2026. Open the source-backed page to inspect the fresh filing or facts context.
Update date
19 Mar 2026
Page type
Ownership filings
Latest period
18 Mar 2026
Ownership context was refreshed from SEC Forms 3/4/5 filed on 19 Mar 2026.
Filer Overview
Matthew E. Massengill has filed 152 SEC EDGAR filings since 23 Sep 2003. Common forms include 4, 144, 144/A, 3 and more.
Latest Filings
Recent SEC filings for Matthew E. Massengill with direct links to document and filing folders.
| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Mar 2026 | 18 Mar 2026 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 06 Feb 2026 | 05 Feb 2026 | 001-08703 |
| 144 | Open 144 document | View SEC filing for 144 | 05 Feb 2026 | |||
| 144/A | Open 144/A document | View SEC filing for 144/A | 03 Feb 2026 | |||
| 144 | Open 144 document | View SEC filing for 144 | 02 Feb 2026 | |||
| 144 | Open 144 document | View SEC filing for 144 | 21 Jan 2026 | |||
| 144 | Open 144 document | View SEC filing for 144 | 15 Jan 2026 | |||
| 144 | Open 144 document | View SEC filing for 144 | 07 Jan 2026 | |||
| 144 | Open 144 document | View SEC filing for 144 | 06 Jan 2026 | |||
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 22 Dec 2025 | 18 Dec 2025 | 001-08703 |
| 144 | Open 144 document | View SEC filing for 144 | 26 Nov 2025 | |||
| 144 | Open 144 document | View SEC filing for 144 | 25 Nov 2025 | |||
| 144 | Open 144 document | View SEC filing for 144 | 24 Nov 2025 | |||
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 21 Nov 2025 | 20 Nov 2025 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 22 Sep 2025 | 18 Sep 2025 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 23 Jun 2025 | 18 Jun 2025 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 04 Mar 2025 | 03 Mar 2025 | 001-42420 |
| 3 | Open 3 document | View SEC filing for 3 | PRIMARY DOCUMENT | 31 Jan 2025 | 31 Jan 2025 | 001-42420 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 22 Nov 2024 | 20 Nov 2024 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Nov 2023 | 15 Nov 2023 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Nov 2022 | 16 Nov 2022 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Nov 2021 | 16 Nov 2021 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Nov 2020 | 18 Nov 2020 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Nov 2020 | 14 Nov 2020 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 21 Apr 2020 | 17 Apr 2020 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 23 Jan 2020 | 21 Jan 2020 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 15 Nov 2019 | 14 Nov 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 12 Nov 2019 | 07 Nov 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 24 Oct 2019 | 22 Oct 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Jul 2019 | 15 Jul 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Apr 2019 | 15 Apr 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Jan 2019 | 14 Jan 2019 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 08 Nov 2018 | 07 Nov 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 06 Nov 2018 | 02 Nov 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Oct 2018 | 15 Oct 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 18 Jul 2018 | 16 Jul 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 30 May 2018 | 29 May 2018 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 18 Apr 2018 | 16 Apr 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 15 Feb 2018 | 13 Feb 2018 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Jan 2018 | 16 Jan 2018 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 09 Nov 2017 | 08 Nov 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 03 Nov 2017 | 01 Nov 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 01 Nov 2017 | 30 Oct 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Oct 2017 | 16 Oct 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Jul 2017 | 17 Jul 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Apr 2017 | 17 Apr 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 16 Feb 2017 | 14 Feb 2017 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Jan 2017 | 17 Jan 2017 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 08 Nov 2016 | 07 Nov 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 07 Nov 2016 | 03 Nov 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Oct 2016 | 17 Oct 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Jul 2016 | 15 Jul 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 18 Apr 2016 | 15 Apr 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 11 Feb 2016 | 09 Feb 2016 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 20 Jan 2016 | 15 Jan 2016 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 23 Nov 2015 | 19 Nov 2015 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 10 Nov 2015 | 06 Nov 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 05 Nov 2015 | 03 Nov 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Oct 2015 | 15 Oct 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Jul 2015 | 15 Jul 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 20 Apr 2015 | 16 Apr 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Feb 2015 | 12 Feb 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 12 Feb 2015 | 10 Feb 2015 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 20 Jan 2015 | 15 Jan 2015 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 12 Nov 2014 | 10 Nov 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 06 Nov 2014 | 04 Nov 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Oct 2014 | 15 Oct 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Jul 2014 | 15 Jul 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 05 Jun 2014 | 03 Jun 2014 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Apr 2014 | 15 Apr 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 12 Feb 2014 | 11 Feb 2014 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Jan 2014 | 15 Jan 2014 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 19 Nov 2013 | 15 Nov 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 14 Nov 2013 | 14 Nov 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 12 Nov 2013 | 08 Nov 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Oct 2013 | 15 Oct 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Jul 2013 | 15 Jul 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 06 Jun 2013 | 04 Jun 2013 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 16 Apr 2013 | 15 Apr 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 20 Mar 2013 | 18 Mar 2013 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 14 Feb 2013 | 27 Dec 2012 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 28 Dec 2012 | 26 Dec 2012 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 10 Dec 2012 | 07 Dec 2012 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 07 Dec 2012 | 06 Dec 2012 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 13 Nov 2012 | 08 Nov 2012 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 17 Oct 2012 | 15 Oct 2012 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 23 Aug 2012 | 21 Aug 2012 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | 20 Aug 2012 | 17 Aug 2012 | 000-08866 | |
| 4 | Open 4 document | View SEC filing for 4 | 02 Feb 2012 | 31 Jan 2012 | 000-08866 | |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 14 Nov 2011 | 10 Nov 2011 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 26 Aug 2011 | 24 Aug 2011 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 15 Aug 2011 | 11 Aug 2011 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | MAIN DOCUMENT DESCRIPTION | 21 Apr 2011 | 19 Apr 2011 | 000-24923 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 12 Nov 2010 | 11 Nov 2010 | 001-08703 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 | 06 Oct 2010 | 04 Oct 2010 | 000-08866 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 13 Sep 2010 | 12 Sep 2010 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 13 Aug 2010 | 11 Aug 2010 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | PRIMARY DOCUMENT | 09 Aug 2010 | 07 Aug 2010 | 001-34133 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 SUBMISSION | 14 May 2010 | 12 May 2010 | 000-24923 |
| 4 | Open 4 document | View SEC filing for 4 | FORM 4 SUBMISSION | 22 Feb 2010 | 18 Feb 2010 | 000-24923 |
About this filer
Matthew E. Massengill files with the SEC under CIK 0001232826. This page aggregates EDGAR filings and related ownership activity.
FAQ
- What is a CIK?
- A Central Index Key (CIK) is a unique identifier assigned by the SEC to each filer.
- Why are some filings missing?
- New filings appear as the SEC updates EDGAR, and older records can vary by availability.
- How often is this page updated?
- Updates follow new EDGAR submissions and periodic data refreshes.