MONOLITHIC POWER SYSTEMS INC (MPWR) Insider Trading -- Recent Executive & Director Transactions

12 insiders reported 390 Form 4 transactions for MONOLITHIC POWER SYSTEMS INC (MPWR) over the past 18 months (most recent 2026-06-03). Recent activity: Sciammas Maurice (EVP, WW Sales & Marketing) Sell 30 shares, Sciammas Maurice (EVP, WW Sales & Marketing) Sell 12,472 shares, Tseng Saria (EVP & General Counsel) Sell 7,565 shares, Hsing Michael (CEO) Sell 3,424 shares, DEAN ROBERT W II (Interim CFO) Sell 4 shares. Source: SEC Form 4.

DateInsiderTitleTypeSharesValue
2026-06-03Sciammas MauriceEVP, WW Sales & MarketingSell30$46,018
2026-06-02Sciammas MauriceEVP, WW Sales & MarketingSell12,472$0
2026-05-29Tseng SariaEVP & General CounselSell7,565$12.9M
2026-05-20Hsing MichaelCEOSell3,424$5.0M
2026-05-20DEAN ROBERT W IIInterim CFOSell4$6,253
2026-05-20Hsing MichaelCEOSell5,819$8.5M
2026-05-20Hsing MichaelCEOSell5,049$7.4M
2026-05-20Hsing MichaelCEOSell4,082$6.0M
2026-05-20Hsing MichaelCEOSell5,737$8.5M
2026-05-20Hsing MichaelCEOSell6,688$9.9M
2026-05-20Hsing MichaelCEOSell862$1.3M
2026-05-20Hsing MichaelCEOSell608$911,672
2026-05-20Hsing MichaelCEOSell2,929$4.4M
2026-05-20Hsing MichaelCEOSell3,769$5.7M
2026-05-20Hsing MichaelCEOSell551$833,724
2026-05-20Hsing MichaelCEOSell352$534,389
2026-05-20Hsing MichaelCEOSell130$197,786
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell1,312$2.1M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell1,717$2.7M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell2,010$3.1M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell2,020$3.2M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell3,741$5.8M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell703$1.1M
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell447$707,248
2026-05-19Sciammas MauriceEVP, WW Sales & MarketingSell50$79,276

Source: SEC Form 4 filings · as of 2026-06-03