Sciammas Maurice's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Nov 20, 2025
- Accession no.
- 0001214659-25-017014
- Filed
- Nov 20, 2025
- Trade date
- Nov 19, 2025
- Filing delay
- 1 day
- Rule 10b5-1 plan
- Not checked
This filing lists 12 non-derivative transactions. Open-market sales total $6.12M. It was filed 1 day after the trade.
Reporting owners
A Form 4 can have several reporting owners, such as a person and a fund they control. Trade tables show the first one.
| Owner | Relationship to the company |
|---|---|
| Sciammas MauriceCIK 0001360833 | Officer (EVP, WW Sales & Marketing) |
Non-derivative securities (Table I)
Acquisitions and disposals of common stock and similar shares, one row per line on the filing.
| Trade date | Security | Transaction | Shares | Price | Value | Shares after | Ownership | Flags |
|---|---|---|---|---|---|---|---|---|
| Nov 19, 2025 | Common Stock | SSaleDisposed | −240 | $862.58F1 | −$207,019.2 | 183,066 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −160 | $863.86 | −$138,217.6 | 182,906 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −40 | $865.89 | −$34,635.6 | 182,866 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −339 | $866.19F2 | −$293,638.41 | 182,527 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −699 | $867.57F3 | −$606,431.43 | 181,828 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −723 | $868.42F4 | −$627,867.66 | 181,105 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −1,842 | $869.39F5 | −$1,601,416.38 | 179,263 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −320 | $870.36F6 | −$278,515.2 | 178,943 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −220 | $871.45F7 | −$191,719 | 178,723 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −574 | $872.80F8 | −$500,987.2 | 178,149 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −1,146 | $873.78F9 | −$1,001,351.88 | 177,003 | Direct | |
| Nov 19, 2025 | Common Stock | SSaleDisposed | −731 | $874.50F10 | −$639,259.5 | 176,272 | Direct |
Footnotes and remarks
Livermore keeps the footnotes that transaction prices refer to, all footnotes of amendments (Form 4/A) and the filing's remarks. Other footnotes, such as how indirect holdings are held or the details of a trading plan, are only in the original on SEC EDGAR.
- F1
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $862.25 to $862.75. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F2
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $866.16 to $866.51. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F3
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $867.04 to $867.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F4
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $868.00 to $868.94. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F5
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $869.00 to $869.91. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F6
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $870.07 to $870.98. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F7
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $871.39 to $871.64. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F8
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $872.74 to $872.89. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F9
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $873.49 to $873.97. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.
- F10
The price is the weighted average sale price for the transactions reported on this line. The prices for the transactions reported on this line range from $874.09 to $874.90. The reporting person undertakes to provide, upon request by the staff of the Securities and Exchange Commission, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price.
Referenced by the price of 1 transaction in Table I.