Hsing Michael's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Feb 12, 2026
- Accession no.
- 0001214659-26-001587
- Filed
- Feb 12, 2026
- Trade date
- Feb 10, 2026
- Filing delay
- 2 days
- Rule 10b5-1 plan
- Checked
This filing lists 9 non-derivative transactions. Open-market sales total $38.8M. 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 |
|---|---|
| Hsing MichaelCIK 0001308676 | Director, Officer (CEO) |
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 |
|---|---|---|---|---|---|---|---|---|
| Feb 10, 2026 | Common Stock | SSaleDisposed | −4,302 | $1,132.01F2 | −$4,869,907.02 | 983,932 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −6,325 | $1,136.75F3 | −$7,189,943.75 | 977,607 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −16,080 | $1,141.88F4 | −$18,361,430.4 | 961,527 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −3,864 | $1,145.90F5 | −$4,427,757.6 | 957,663 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −1,215 | $1,151.11F6 | −$1,398,598.65 | 956,448 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −694 | $1,154.96F7 | −$801,542.24 | 955,754 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −360 | $1,161.41F8 | −$418,107.6 | 955,394 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −880 | $1,176.04F9 | −$1,034,915.2 | 954,514 | Direct | |
| Feb 10, 2026 | Common Stock | SSaleDisposed | −280 | $1,197.26 | −$335,232.8 | 954,234 | 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 $1,128.88 to $1,133.86. 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 $1,133.92 to $1,138.90. 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 $1,138.96 to $1,143.96. 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.
- 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 $1,144.03 to $1,149.00. 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.
- 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 $1,149.04 to $1,154.00. 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.
- 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 $1,154.09 to $1,155.86. 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 $1,159.96 to $1,163.96. 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 $1,172.65 to $1,177.08. 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.