[Form 4] MONOLITHIC POWER SYSTEMS INC Insider Trading Activity
Monolithic Power Systems (MPWR) insider filing: EVP, WW Sales & Marketing Maurice Sciammas reported a Form 4 for a tax-withholding transaction on 10/30/2025.
Rhea-AI Filing Summary
Monolithic Power Systems (MPWR) insider filing: EVP, WW Sales & Marketing Maurice Sciammas reported a Form 4 for a tax-withholding transaction on 10/30/2025. The company withheld 54,543 shares of common stock at $1,096.63 to satisfy income tax obligations tied to the earnout and vesting of market‑based RSUs granted in October 2022.
After the transaction, he holds 183,306 shares directly. Additional indirect holdings are reported across various family trusts and accounts.
Positive
- None.
Negative
- None.
Insider Trade Summary
Exercise Price or Tax Liability: 54,543 shares
Exercise Price or Tax Liability
14 txns
Insider
Sciammas Maurice
Role
EVP, WW Sales & Marketing
| Type | Security | Shares | Price | Value |
|---|---|---|---|---|
| Exercise Price or Tax Liability | Common Stock | 54,543 | $1,096.63 | $59.81M |
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Holdings After Transaction:
Common Stock — 183,306 shares (Direct);
Common Stock — 9,481 shares (Indirect, Maurice Sciammas Trust FBO Oski Crew);
Common Stock — 1,699 shares (Indirect, The Joseph Roger Sciammas 2020 Irrevocable Trust);
Common Stock — 2,000 shares (Indirect, Rosalind Sciammas Family 2021 Trust);
Common Stock — 9,481 shares (Indirect, Christina Sciammas Trust FBO Oski Crew);
Common Stock — 1,499 shares (Indirect, Clement Sciammas Brokerage Account);
Common Stock — 1,499 shares (Indirect, Rosalind Sciammas Brokerage Account);
Common Stock — 44,930 shares (Indirect, Sciammas Family Trust);
Common Stock — 12,228 shares (Indirect, Various Sciammas GRATs);
Common Stock — 1,699 shares (Indirect, The Patrick Francis Sciammas 2020 Irrevocable Trust);
Common Stock — 4,015 shares (Indirect, By Sciammas Trust 2020);
Common Stock — 5,000 shares (Indirect, Clement Sciammas Family 2021 Trust);
Common Stock — 1,000 shares (Indirect, Peter Rafferty and Eric Toothill 2021Trust);
Common Stock — 1,699 shares (Indirect, The Chloe Liliane Sciammas 2020 Irrevocable Trust)
Footnotes (1)
- F1. The sales transaction reported in this Form 4 represents shares of common stock withheld by the Company to satisfy the income tax obligations in connection with the earnout and vesting of the market-based restricted stock units granted in October 2022, previously reported in a Form 4.
AI-generated analysis. How Rhea-AI works. Not financial advice.
