SEC Form 4 · accession 0001214659-26-009744
MONOLITHIC POWER SYSTEMS, INC. · MPWR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Maurice Sciammas
Officer — EVP, WW Sales & Marketing
Period of report
Aug 4, 2026
Accepted (ET)
Aug 6, 2026 · 8:31 pm EDT
Rule 10b5-1 plan
box not checked
Issuer CIK
0001280452
Table I — non-derivative securities
| Security | Date | Code | Shares | Price | A/D | Owned after | D/I | Nature of ownership |
|---|---|---|---|---|---|---|---|---|
| Common StockF1 | Aug 4, 2026 | G | 25,000 | $0.00 | D | 126,644 | D | |
| Common StockF2 | Aug 4, 2026 | G | 25,000 | $0.00 | A | 36,062 | I | Various Sciammas GRATs |
| Common Stock | holding | — | — | — | 1,699 | I | The Joseph Roger Sciammas 2020 Irrevocable Trust | |
| Common Stock | holding | — | — | — | 2,000 | I | Rosalind Sciammas Family 2021 Trust | |
| Common Stock | holding | — | — | — | 919 | I | Rosalind Sciammas Brokerage Account | |
| Common Stock | holding | — | — | — | 52,586 | I | Sciammas Family Trust | |
| Common Stock | holding | — | — | — | 1,699 | I | The Patrick Francis Sciammas 2020 Irrevocable Trust | |
| Common Stock | holding | — | — | — | 4,015 | I | By Sciammas Trust 2020 | |
| Common Stock | holding | — | — | — | 1,000 | I | Peter Rafferty and Eric Toothill 2021Trust | |
| Common Stock | holding | — | — | — | 1,699 | I | The Chloe Liliane Sciammas 2020 Irrevocable Trust | |
| Common Stock | holding | — | — | — | 1,119 | I | Clement Sciammas Trust | |
| Common Stock | holding | — | — | — | 5,000 | I | Clement Sciammas Family 2021 Trust |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F125,000 shares were transferred from the reporting person's direct holdings to two GRATs, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.
- F225,000 shares were received by two GRATs, of which the reporting person is a trustee, from the reporting person's direct holdings. No funds were exchanged and no sale of shares occurred in the transfer.