INSIDER
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersPlanned Sales & StakesGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources

Public disclosures only. Scores flag unusual patterns and are not evidence of wrongdoing. Not investment advice.

Robinhood Chain…
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersPlanned Sales & StakesGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersPlanned Sales & StakesGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlist
ConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
OverviewFollow the MoneyDaily BriefLiveCongressDirectoryCorporate InsidersPlanned Sales & StakesGovernment MoneyPolitical InfluenceInstitutionsWashington NetworkFollow the PowerDisclosure ClockAI InvestigatorWatchlistConvergenceINSIDER AlphaSignal ledgerHistorical ReplayRobinhood ChainProofTradingTokenProAccountMethodology
Data sources
SEC FORM 42h ago
HOUSE PTR2h ago
SEC 13F2h ago
ROBINHOOD CHAIN2h ago
Public company

MONOLITHIC POWER SYSTEMS, INC.

MPWRCIK 0001280452

EDGAR filingsOpen in network
Price$1131.43
1 year+18.1%
Disclosed transactions4
Buys / sells0 / 2
Max Insider Score24
Connections with evidence4

MPWR · disclosed activity on price

Disclosed transactions

ScoreActorSecuritySideValueExecutedDisclosedLagSourceEvidence
16
SM
Sciammas MauriceEVP, WW Sales & Marketing
MPWRMONOLITHIC POWER SYSTEMS, INC.
Gift
G—
13.0K sh
Nov 3, 2026Nov 5, 2026

Verified connections

  • ← Insider ofevidence
    Sciammas MauriceEVP, WW Sales & Marketing · Nov 5, 2026
  • In industryevidence
    Telecommunications & technologySEC SIC 3674 · Semiconductors & Related Devices · Nov 4, 2026
  • ← Holds over 5% ofevidence
    FMR LLC9.1% of class · Schedule 13G · Nov 4, 2026
  • ← Disclosed trade inevidence
    Byron DonaldsSale disclosed 2026-07-15 · Jul 15, 2026
traded Nov 3, 2026
+2d
SEC FORM 4

Evidence

20
SM
Sciammas MauriceEVP, WW Sales & Marketing
MPWRMONOLITHIC POWER SYSTEMS, INC.
Gift
G—
13.0K sh
Nov 3, 2026Nov 5, 2026
traded Nov 3, 2026
+2dSEC FORM 4

Evidence

24
Byron DonaldsRSpouse
MPWRMONOLITHIC POWER SYSTEMS, INC.
Partial sale
SELL$1,001 – $15KJun 5, 2026Jul 15, 2026
traded Jun 5, 2026
+40dHOUSE PTR

Evidence

24
Byron DonaldsRSelf
MPWRMONOLITHIC POWER SYSTEMS, INC.
Partial sale
SELL$1,001 – $15KJun 5, 2026Jul 15, 2026
traded Jun 5, 2026
+40dHOUSE PTR

Evidence

Planned sales and 5% stakes

Form 144, 13D and 13G
  • FMFMR LLCPassive holder · crossed on Sep 30, 2026 · 4.45M shares9.1% of class13G amendment · filed Nov 5, 2026