Matthew E. Massengill is Director at WESTERN DIGITAL CORP (WDC). They have made 22 open-market trades across 2 companies since 2006, most recently 2026-02-05.
CIK 0001232826
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 22 sales. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| WDC | SELL · 10b5-1 | 2026-02-05 | 2026-02-06 | $260.43 | $9.6M | +1.7% | -6.3% | +65.8% |
| WDC | SELL | 2019-11-08 | 2019-11-12 | $52.14 | $312K | -6.6% | +3.5% | +31.0% |
| WDC | SELL | 2018-11-05 | 2018-11-06 | $47.68 | $160K | -5.7% | -11.7% | -3.2% |
| WDC | SELL | 2017-11-08 | 2017-11-09 | $86.53 | $463K | +4.6% | -8.0% | -5.1% |
| MSCC | SELL | 2017-02-15 | 2017-02-16 | $53.77 | $201K | -0.9% | -2.4% | -12.0% |
| WDC | SELL | 2016-11-07 | 2016-11-08 | $57.23 | $210K | +9.2% | +22.3% | +41.4% |
| MSCC | SELL | 2016-02-11 | 2016-02-11 | $29.62 | $146K | +8.8% | +13.0% | +6.7% |
| MSCC | SELL | 2015-11-19 | 2015-11-23 | $36.61 | $1.5M | -3.3% | -1.2% | +3.9% |
| WDC | SELL · 10b5-1 | 2015-11-06 | 2015-11-10 | $67.75 | $80K | -15.7% | +1.8% | -29.3% |
| WDC | SELL | 2015-02-12 | 2015-02-17 | $107.27 | $991K | -15.7% | +1.8% | +1.8% |
| MSCC | SELL · 10b5-1 | 2015-02-11 | 2015-02-12 | $30.02 | $81K | -3.3% | -1.2% | -1.2% |
| WDC | SELL · 10b5-1 | 2014-11-11 | 2014-11-12 | $97.18 | $256K | -15.7% | +1.8% | +1.8% |
| WDC | SELL · 10b5-1 | 2014-11-05 | 2014-11-06 | $100.62 | $158K | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2013-11-15 | 2013-11-19 | $74.52 | $2.5M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2013-03-18 | 2013-03-20 | $49.91 | $1.3M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2012-12-07 | 2012-12-10 | $37.44 | $1.7M | -15.7% | +1.8% | +1.8% |
| MSCC | SELL | 2012-12-06 | 2012-12-07 | $19.99 | $536K | -3.3% | -1.2% | -1.2% |
| MSCC | SELL | 2012-08-17 | 2012-08-20 | $20.80 | $416K | -3.3% | -1.2% | -1.2% |
| WDC | SELL | 2009-11-04 | 2009-11-06 | $34.80 | $609K | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2008-06-04 | 2008-06-05 | $38.28 | $1.5M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2008-06-04 | 2008-06-05 | $38.04 | $2.3M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2008-02-21 | 2008-02-22 | $30.75 | $939K | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2007-11-07 | 2007-11-07 | $28.02 | $1.1M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2007-11-06 | 2007-11-07 | $28.12 | $1.9M | -15.7% | +1.8% | +1.8% |
| WDC | SELL | 2007-11-05 | 2007-11-07 | $28.04 | $11.6M | -15.7% | +1.8% | +1.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.