MASSENGILL MATTHEW E
Director · WDC, SNDK
As of 2026-09-27, MASSENGILL MATTHEW E has 20 Form 4 transactions on record across 2 companies — 16 in the trailing 12 months.
Everything this person has disclosed to the SEC on Form 4 — across every company they file for — reconstructed from the public record. A filing history, not a tip sheet.
Reconstructed holdings
Reconstructed from this person's own Form 4 filings — the total each filing reported owning afterward, priced at the close on the as-of date shown. A filed position can lag the real one.
Direct and indirect holdings (e.g. through a trust or fund) are tagged separately, as filed.
Trades by company
Filing ledger
| Date | Company | Action | Shares @ price | Value | Ownership Δ | Owned after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-02-05 | WDC | Sale | 7,000 @ $258.67 | $1.8M | −23.4% of holding | 22,915 | Form 4 |
| 2026-02-05 | WDC | Sale | 5,987 @ $260.57 | $1.6M | −33.3% of holding | 12,013 | Form 4 |
| 2026-02-05 | WDC | Sale | 4,915 @ $259.59 | $1.3M | −21.4% of holding | 18,000 | Form 4 |
| 2026-02-05 | WDC | Sale | 4,411 @ $257.69 | $1.1M | −12.9% of holding | 29,915 | Form 4 |
| 2026-02-05 | WDC | Sale | 3,597 @ $261.71 | $941K | −29.9% of holding | 8,416 | Form 4 |
| 2026-02-05 | WDC | Sale | 2,600 @ $264.01 | $686K | −42.5% of holding | 3,516 | Form 4 |
| 2026-02-05 | WDC | Sale | 2,600 @ $256.63 | $667K | −7.0% of holding | 34,326 | Form 4 |
| 2026-02-05 | WDC | Sale | 2,300 @ $262.77 | $604K | −27.3% of holding | 6,116 | Form 4 |
| 2026-02-05 | WDC | Sale | 2,200 @ $264.99 | $583K | −62.6% of holding | 1,316 | Form 4 |
| 2026-02-05 | WDC | Sale | 916 @ $265.92 | $244K | −69.6% of holding | 400 | Form 4 |
| 2026-02-05 | WDC | Sale | 400 @ $268.06 | $107K | −100.0% of holding | 0 | Form 4 |
9 award / exercise / gift records — not counted as purchases
| Date | Company | Action | Shares | Owned after | Filing |
|---|---|---|---|---|---|
| 2026-09-17 | WDC | Award / grant | 10 | 121 | Form 4 |
| 2026-06-17 | WDC | Award / grant | 6 | 111 | Form 4 |
| 2026-03-18 | WDC | Award / grant | 12 | 105 | Form 4 |
| 2025-12-18 | WDC | Award / grant | 21 | 93 | Form 4 |
| 2025-11-20 | WDC | Award / grant | 1,585 | 28,897 | Form 4 |
| 2025-09-18 | WDC | Award / grant | 26 | 72 | Form 4 |
| 2025-06-18 | WDC | Award / grant | 46 | 46 | Form 4 |
| 2025-03-03 | SNDK | Award / grant | 4,840 | 4,840 | Form 4 |
| 2024-11-20 | WDC | Award / grant | 4,542 | 18,804 | Form 4 |
Source: SEC Form 4 filings. Each row links to its original filing.
Research tool, not investment advice — historical frequencies, not recommendations. A product of Marovel Technologies LLC. Full terms.