Sciammas Maurice's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Jul 17, 2026
- Accession no.
- 0001214659-26-008703
- Filed
- Jul 17, 2026, 5:43 PM ET
- Trade date
- Jul 15, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 18 non-derivative transactions. Open-market sales total $20.2M. It was filed 2 days 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 |
|---|---|---|---|---|---|---|---|---|
| Jul 15, 2026 | Common Stock | SSaleDisposed | −527 | $1,314.03F2 | −$692,493.81 | 166,117 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −274 | $1,318.42F3 | −$361,247.08 | 165,843 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −409 | $1,323.93F4 | −$541,487.37 | 165,434 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −464 | $1,329.30F5 | −$616,795.2 | 164,970 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −776 | $1,334.59F6 | −$1,035,641.84 | 164,194 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −1,460 | $1,339.59F7 | −$1,955,801.4 | 162,734 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −1,864 | $1,344.16F8 | −$2,505,514.24 | 160,870 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −1,506 | $1,348.91F9 | −$2,031,458.46 | 159,364 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −5,640 | $1,352.95F10 | −$7,630,638 | 153,724 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −50 | $1,359.36F11 | −$67,968 | 153,674 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −240 | $1,369.18F12 | −$328,603.2 | 153,434 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −472 | $1,375.47F13 | −$649,221.84 | 152,962 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −418 | $1,378.73F14 | −$576,309.14 | 152,544 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −410 | $1,384.11F15 | −$567,485.1 | 152,134 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −50 | $1,388.19F16 | −$69,409.5 | 152,084 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −213 | $1,396.16F17 | −$297,382.08 | 151,871 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −117 | $1,400.45F18 | −$163,852.65 | 151,754 | Direct | |
| Jul 15, 2026 | Common Stock | SSaleDisposed | −110 | $1,405.71F19 | −$154,628.1 | 151,644 | 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.
- 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 $1,311.45 to $1,316.40 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 $1,316.56 to $1,321.56. 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 $1,321.72 to $1,326.11. 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 $1,326.94 to $1,331.90. 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.
- 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 $1,331.95 to $1,336.95. 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 $1,336.97 to $1,341.96. 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 $1,341.99 to $1,346.96. 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 $1,347.09 to $1,352.00. 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 $1,352.13 to $1,357.03. 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.
- F11
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 $1,357.88 to $1,362.57. 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.
- F12
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 $1,366.15 to $1,371.04. 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.
- F13
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 $1,371.23 to $1,376.20. 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.
- F14
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 $1,376.51 to $1,381.11. 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.
- F15
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 $1,381.79 to $1,386.22. 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.
- F16
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 $1,388.18 to $1,388.22. 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.
- F17
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 $1,393.94 to $1,398.92. 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.
- F18
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 $1,398.97 to $1,400.85. 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.
- F19
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 $1,404.25 to $1,406.04. 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.