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MPWR insider trading

Monolithic Power Systems, Inc. · end-of-day data as of Oct 16, 2026

Monolithic Power Systems, Inc.
MPWR · $59.51B
$1,210.86-9.1%last 60 sessions · close Oct 16, 2026
$851.25$1,684.8452 weeks
Buy · 18 analystsPT $1,880.15 +55.3%
  • P/E vs own+14.9%
  • P/E vs sector+122.2%
  • Target upside+55.3%
  • Off 52w high-28.1%
  • Insiders-$40.72M
  • FCF yield+1.0%
  • Earnings in13d
  • Trendsideways
  • Sector▲ +1.1%
  • RSI38
  • MA20×50Golden 6d ago
  • Volume1.2x
  • Support-18.0%
  • Resistance+1.8%

In the last 12 months MPWR insiders made 0 open-market purchases and 56 sales worth $729M, as reported on SEC Form 4. The latest: Hsing Michael (director, officer: CEO) sold 30,000 shares at $1,344.97 on Sep 28, 2026.

Last 90 days

  • Insiders-$40.72M

Transactions

Open-market buys $0 · sells $729M over the last 365 days (0 buys, 56 sells).

Sep 28, 2026Hsing Michael
director, officer: CEO
Sell30,000$1,344.97$40.35M
Aug 31, 2026Tseng Saria
officer: EVP & General Counsel
Other4,000——
Aug 24, 2026CHANG KUO WEI HERBERT
director
Sell50$1,281.57$64.08K
Aug 24, 2026DEAN ROBERT W II
officer: Interim CFO
Sell32$1,297.72$41.53K
Aug 24, 2026DEAN ROBERT W II
officer: Interim CFO
Other5——
Aug 17, 2026DEAN ROBERT W II
officer: Interim CFO
Sell6$1,413.64$8.48K
Aug 11, 2026CHANG KUO WEI HERBERT
director
Sell50$1,420.00$71K
Aug 5, 2026DEAN ROBERT W II
officer: Interim CFO
Sell105$1,344.27$141K
Aug 4, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Other50,000——
Aug 3, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Sell30$1,343.94$40.32K
Jul 25, 2026DEAN ROBERT W II
officer: Interim CFO
Other1,359——
Jul 15, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Sell15,000$1,349.73$20.25M
Jul 1, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Sell30$1,351.61$40.55K
Jun 1, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Sell30$1,533.95$46.02K
May 29, 2026Sciammas Maurice
officer: EVP, WW Sales & Marketing
Other12,472——
May 27, 2026Tseng Saria
officer: EVP & General Counsel
Sell7,565$1,700.00$12.86M
May 26, 2026DEAN ROBERT W II
officer: Interim CFO
Sell22$1,649.56$36.29K
May 26, 2026Zhou Jeff
director
Sell486$1,680.00$816K
May 22, 2026Tseng Saria
officer: EVP & General Counsel
Sell5,000$1,586.43$7.93M
May 22, 2026Tseng Saria
officer: EVP & General Counsel
Other200——

Source: SEC Form 4 filings. "Other" covers awards, option exercises and gifts.