InsiderTrades

MASSENGILL MATTHEW E

SEC CIK 1232826 · EDGAR

Buying vs selling by month open-market trades, last 24 months, all 2 companies
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
WDCWestern DigitalDir 6,116 — $9.62M 62021-11-162026-02-05
SNDKSandiskDir 4,840 — — 12025-03-032025-03-03

Most active insiders at WDC, 12 months

#InsiderTitleBoughtSold
1 Tan IrvingCEO, Dir —$25.26M
2 Gubbi Vidyadhara KChief of Gbl Ops —$12.91M
3 MASSENGILL MATTHEW EDir —$9.62M
4 Cole Martin IDir —$8.08M
5 Davis Brian ScottChief Sales, Mrktng Off —$7.80M
6 Tregillis Cynthia LCLO, Corp Sec —$7.50M
7 STREETER STEPHANIE ADir —$2.52M
8 Alexy KimberlyDir —$592.4K
9 KIDDOO BRUCE EDir —$396.4K
10 Oulman RoxanneDir —$278.0K

Transactions 7

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
MI 2026-02-06 2026-02-05 WDC Western Digital MASSENGILL MATTHEW E Dir S - Sale $260.43 -36.9K 6,116 -86% -$9.62M
2025-11-21 2025-11-20 WDC Western Digital MASSENGILL MATTHEW E Dir A - Grant $0.00 +1,585 28.9K +6% $0
2025-03-04 2025-03-03 SNDK Sandisk MASSENGILL MATTHEW E Dir A - Grant $0.00 +4,840 4,840 New $0
2024-11-22 2024-11-20 WDC Western Digital MASSENGILL MATTHEW E Dir A - Grant $0.00 +4,542 18.8K +32% $0
2023-11-16 2023-11-15 WDC Western Digital MASSENGILL MATTHEW E Dir A - Grant $0.00 +6,300 51.2K +14% $0
2022-11-17 2022-11-16 WDC Western Digital MASSENGILL MATTHEW E Dir A - Grant $0.00 +7,962 44.9K +22% $0
2021-11-17 2021-11-16 WDC Western Digital MASSENGILL MATTHEW E Dir A - Grant $0.00 +4,958 36.9K +16% $0

Purchase Sale Sale after option exercise All abbreviations