Hsing Michael 4

What Happened

• Hsing Michael, CEO and Director of Monolithic Power Systems (MPWR), sold a total of 33,000 shares in multiple open‑market transactions on February 11, 2026, generating aggregate proceeds of approximately $39,234,212. Reported line prices (weighted averages) range from $1,158.71 to $1,202.28 per share; underlying trade prices reported in footnotes range roughly from $1,155.64 to $1,203.86.
• These were sales (not purchases), and the filing indicates the trades were executed pursuant to a Rule 10b5‑1 trading plan adopted by the reporting person on August 25, 2025 — a preplanned program that often indicates pre-specified sales rather than ad hoc insider selling.

Key Details

• Transaction date: 2026-02-11; Form 4 filed: 2026-02-13 (appears timely — filed within the 2-business‑day Form 4 window).
• Total shares sold: 33,000; Total proceeds: ~$39.23 million.
• Reported per-line weighted average sale prices: $1,158.71; $1,163.71; $1,167.62; $1,172.92; $1,177.67; $1,182.82; $1,188.17; $1,192.67; $1,197.20; $1,202.28.
• Notable footnotes: F1 — sales made under a 10b5‑1 plan (adopted 8/25/2025). Other footnotes (F2–F11) show the ranges of actual sale prices for each reported line and state the filer will provide price‑by‑price details to the SEC or issuer on request.
• Shares owned after the transactions: not specified in the provided filing excerpt.

Context

• Sales under a 10b5‑1 plan are generally prearranged and do not necessarily signal a change in the insider’s view of the company; they are commonly used to avoid timing questions around discretionary insider trades.
• This is a routine insider sale reporting event — factual disclosure of liquidity taken by the CEO. Retail investors should consider this alongside other signals (company performance, other insider trades, and broader market conditions) rather than as standalone evidence of management sentiment.