Lee Victor K's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Dec 29, 2025
- Accession no.
- 0001214659-25-018478
- Filed
- Dec 29, 2025
- Trade date
- Dec 24, 2025
- Filing delay
- 5 days
- Rule 10b5-1 plan
- Checked
This filing lists 6 non-derivative transactions. Open-market sales total $951.7K. It was filed 5 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 |
|---|---|
| Lee Victor KCIK 0001292133 | Director |
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 |
|---|---|---|---|---|---|---|---|---|
| Dec 24, 2025 | Common Stock | SSaleDisposed | −197 | $949.70F2 | −$187,090.9 | 29,370 | Direct | |
| Dec 24, 2025 | Common Stock | SSaleDisposed | −280 | $950.64F3 | −$266,179.2 | 29,090 | Direct | |
| Dec 24, 2025 | Common Stock | SSaleDisposed | −160 | $951.60F4 | −$152,256 | 28,930 | Direct | |
| Dec 24, 2025 | Common Stock | SSaleDisposed | −83 | $952.37F5 | −$79,046.71 | 28,847 | Direct | |
| Dec 24, 2025 | Common Stock | SSaleDisposed | −200 | $953.70F6 | −$190,740 | 28,647 | Direct | |
| Dec 24, 2025 | Common Stock | SSaleDisposed | −80 | $955.08F7 | −$76,406.4 | 28,567 | 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 $949.23 to $949.98. 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.
- 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 $950.30 to $950.90. 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.
- 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 $951.24 to $951.84. 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 $952.23 to $952.76. 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 $953.31 to $953.99. 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 $955.05 to $955.10. 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.