Massengill Matthew E insider trades
Massengill Matthew E has filed 13 Form 4s with the SEC that we hold, for Western Digital Corp (WDC) (Director) and Sandisk Corp (SNDK) (Director). Across all of them we count 0 purchases worth $0 and 11 sales worth $9.6M reported on Form 4. In the last 12 months: 0 purchases ($0) and 11 sales ($9.6M). The largest single trade was a sale of 7,000 shares of Western Digital Corp worth $1.8M, dated 2026-02-05. The first filing on our record is dated 2021-11-17 and the latest 2026-09-21.
Western Digital Corp (WDC)
| Trade date | Code | Shares | Value as filed | Filed |
|---|---|---|---|---|
| 2026-02-05 | S, sale reported on Form 4 | 7,000 | $1.8M | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 4,915 | $1.3M | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 5,987 | $1.6M | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 3,597 | $941.4K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 2,600 | $667.2K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 2,600 | $686.4K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 2,200 | $583.0K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 916 | $243.6K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 400 | $107.2K | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 4,411 | $1.1M | 2026-02-06 |
| 2026-02-05 | S, sale reported on Form 4 | 2,300 | $604.4K | 2026-02-06 |
Sandisk Corp (SNDK)
No purchase or sale of common stock reported here; these filings cover grants, option exercises or other codes.
Counted from the Form 4 filings this reporting owner (SEC CIK 1232826) filed on EDGAR. Values are the transaction values as filed. See every filing on EDGAR, or browse insider buying and today's insider purchases.
Source: U.S. Securities and Exchange Commission (EDGAR) and other official
government data · Updated 2026-10-12 ·
For informational purposes only, not investment advice.
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