MATTHEW E MASSENGILL
CIK 1232826 · last filed 2026-03-19
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
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Disclosed Exposure
$22.49M
Companies
6
Total Filings
112
Lifetime Open-Market Net
-$45.77M
Holdings By Company
Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| WDC | Director | 35,013 | $562.92 | $19.71M | -$43.10M | 78 | 2026-03-19 |
| Sandisk Corp (SNDKV) Delisted | Director | 5,006 | — | — | $0 | 1 | 2025-03-04 |
| MICROSEMI CORP (MSCC) Delisted | Director | 0 | — | — | -$2.67M | 15 | 2018-05-30 |
| GT Advanced Technologies Inc. (GTAT) Delisted | Director | 84,964 | — | — | $0 | 4 | 2013-06-06 |
| SOLR | Director | 26,231 | $35.20 | $923.3K | $0 | 6 | 2010-09-13 |
| CNXT | Director | 34,000 | $54.48 | $1.85M | $0 | 6 | 2010-05-14 |
Recent Filings · Page 11 of 12
112 filingsForm 4 transactions across all companies, newest first.
| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2008-06-05 | WDC | Sell (S) | −59,900 | -$2.28M | EDGAR |
| 2008-06-05 | WDC | Sell (S) | −40,100 | -$1.54M | EDGAR |
| 2008-02-22 | WDC | Mixed | — | -$371.0K | EDGAR |
| 2008-01-03 | WDC | Grant (A) | +3,310 | $0 | EDGAR |
| 2007-11-07 | WDC | Mixed | +6,100 | -$847.5K | EDGAR |
| 2007-11-07 | WDC | Mixed | −39,800 | -$1.12M | EDGAR |
| 2007-11-07 | WDC | Mixed | +33,700 | -$6.30M | EDGAR |
| 2007-10-03 | MICROSEMI CORP (MSCC) Delisted | Grant (A) | +7,000 | $199.5K | EDGAR |
| 2007-05-15 | — | Grant (A) | — | $0 | |
| 2007-02-08 | WDC | Grant (A) | — | $0 | EDGAR |
Codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.