Quick Takeaways
- Matthew E. Massengill has 2 issuer positions tracked on this page.
- Estimated disclosed ownership value: $5,937,540.
- Recent insider filing activity is available below.
Insider Trading & Ownership of Matthew E. Massengill
- Location
- San Jose, CA
- Summary
- The estimated net worth of Matthew E. Massengill is at least $5,937,540 dollars as of 19 Mar 2026. Matthew E. Massengill is the Director of WESTERN DIGITAL CORP and owns shares of WESTERN DIGITAL CORP (WDC) stock worth about $5.06M. Matthew E. Massengill is the Director of Sandisk Corp and owns shares of Sandisk Corp (SNDK) stock worth about $873.3K.
- Signature
- By: /s/ Sandra Garcia Attorney-in-Fact For: Matthew Massengill
- All Insider Reports
- All Insider Reports
Follow Filing Activity
Follow Matthew E. Massengill and return when a new Insider Trading filing changes the record on this page.
This uses the existing product follow flow to surface future filing-backed changes without guessing what they mean.
What Changed
- Largest disclosed position: WESTERN DIGITAL CORP ($5,064,221).
- Past-year value change for that position: -$9,616,466.
Why This Matters
- This page translates Forms 3/4/5 into a quick ownership context before you inspect each transaction row.
- You can cross-check role, issuer, and filing chronology directly against the SEC source.
Source Evidence
Filed on Form 4
See Original Filing
Insider ownership context is sourced from SEC Forms 3, 4, and 5.
Ownership of Matthew E. Massengill
| Symbol | Company | Relationship | Holdings Value | Past Year Net Change | Change % | Report Period |
|---|---|---|---|---|---|---|
| WDC | WESTERN DIGITAL CORP | Director | $5,064,221 | -$9,616,466 | -66% | 18 Mar 2026 |
| SNDK | Sandisk Corp | Director | $873,319 | 03 Mar 2025 |
Insider Transactions Reported by Matthew E. Massengill:
| Sym | Company | Class | Transaction | % | Value $ | * Price $ | Shares | Shares After | Date | Ownership |
|---|
* An asterisk sign (*) next to the price indicates that the price is likely invalid.