Blegen Theodore's Form 4 filing
Monolithic Power Systems, Inc. (MPWR) · filed Jan 6, 2026
- Accession no.
- 0001214659-26-000197
- Filed
- Jan 6, 2026
- Trade date
- Jan 2, 2026
- Filing delay
- 4 days
- Rule 10b5-1 plan
- Checked
This filing lists 15 non-derivative transactions. Open-market sales total $2.82M. It was filed 4 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 |
|---|---|
| Blegen TheodoreCIK 0001415033 | Officer (EVP and CFO) |
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 |
|---|---|---|---|---|---|---|---|---|
| Jan 2, 2026 | Common Stock | SSaleDisposed | −80 | $927.61 | −$74,208.8 | 71,252 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −194 | $930.86 | −$180,586.84 | 71,058 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −80 | $933.64 | −$74,691.2 | 70,978 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −40 | $934.74 | −$37,389.6 | 70,938 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −80 | $935.33F2 | −$74,826.4 | 70,858 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −120 | $936.50 | −$112,380 | 70,738 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −460 | $938.52F3 | −$431,719.2 | 70,278 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −117 | $939.75F4 | −$109,950.75 | 70,161 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −40 | $940.03 | −$37,601.2 | 70,121 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −406 | $941.60F5 | −$382,289.6 | 69,715 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −74 | $942.42F6 | −$69,739.08 | 69,641 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −539 | $943.71F7 | −$508,659.69 | 69,102 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −650 | $944.35F8 | −$613,827.5 | 68,452 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −40 | $945.00 | −$37,800 | 68,412 | Direct | |
| Jan 2, 2026 | Common Stock | SSaleDisposed | −80 | $946.62 | −$75,729.6 | 68,332 | 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 $935.08 to $935.57. 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.
- 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 $938.14 to $938.69. 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 $939.51 to $939.99. 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.
- 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 $941.00 to $941.67. 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 $942.01 to $942.77. 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 $943.37 to $943.85. 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.
- 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 $944.01 to $944.51. 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.