SEC Form 4 · accession 0001214659-26-011363
MONOLITHIC POWER SYSTEMS, INC. · MPWR
Statement of changes in beneficial ownership, as filed. Original on EDGAR ↗
Reporting owner
Saria Tseng
Officer — EVP & General Counsel
Period of report
Aug 31, 2026
Accepted (ET)
Sep 2, 2026 · 5:26 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 31, 2026 | G | 2,000 | $0.00 | D | 142,218 | D | |
| Common StockF2 | Aug 31, 2026 | G | 2,000 | $0.00 | A | 2,000 | I | C&T Family Trust |
| Common Stock | holding | — | — | — | 1,000 | I | C&T Discovery Foundation |
Table II — derivative securities
No Table II lines on this filing.
Explanation of responses
- F12,000 shares were transferred from the reporting person's direct holdings to C&T Family Irrevocable Trust, of which the reporting person is a trustee. No funds were exchanged and no sale of shares occurred in the transfer.
- F22,000 shares were received by C&T Family Irrevocable Trust, 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.