InsiderTrades

DEAN ROBERT W II

SEC CIK 1445300 · EDGAR

Buying vs selling by month open-market trades, last 24 months, MPWR
BoughtSold

Companies

TickerCompanyTitleHoldingBoughtSoldTradesFirstLast
MPWRMonolithic Power SystemsInterim CFO 7,094 — $233.7K 82026-05-132026-08-24

Most active insiders at MPWR, 12 months

#InsiderTitleBoughtSold
1 Hsing MichaelCEO, Dir —$314.44M
2 Tseng SariaEVP, GC —$150.90M
3 Sciammas MauriceEVP, WW Sales, Marketing —$101.39M
4 Xiao DemingEVP, Gbl Ops —$76.43M
5 BLEGEN THEODOREEVP, CFO —$40.19M
6 Elmiger Eugen JDir —$19.02M
7 Zhou JeffDir —$3.25M
8 Lee Victor KDir —$2.00M
9 Wynne EileenDir —$530.2K
10 CHANG KUO WEI HERBERTDir —$312.2K
11 DEAN ROBERT W IIInterim CFO —$233.7K

Transactions 8

Type
Reset
X Filed Traded Ticker Company Insider Title Type Price Qty Owned ΔOwn Value
2026-08-26 19:22 2026-08-24 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO S - Sale $1,297.72 -32 7,094 -0.4% -$41.5K
2026-08-26 19:22 2026-08-24 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO J - Other $0.00 -5 7,089 -0.1% $0
2026-08-19 20:44 2026-08-17 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO S - Sale $1,413.64 -6 7,126 -0.1% -$8,482
2026-08-06 18:20 2026-08-05 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO S - Sale $1,344.27 -105 7,132 -1% -$141.1K
2026-07-28 18:42 2026-07-25 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO A - Grant $0.00 +1,359 7,237 +23% $0
2026-05-28 19:46 2026-05-26 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO S - Sale $1,649.56 -22 5,878 -0.4% -$36.3K
2026-05-20 18:52 2026-05-18 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO S - Sale $1,563.28 -4 5,900 -0.1% -$6,253
2026-05-15 16:15 2026-05-13 MPWR Monolithic Power Systems DEAN ROBERT W II Interim CFO J - Other $0.00 -2,156 5,904 -27% $0

Purchase Sale Sale after option exercise All abbreviations