BLEGEN THEODORE 4
4 · MONOLITHIC POWER SYSTEMS INC · Filed Jan 6, 2026
Insider Transaction Report
Form 4
BLEGEN THEODORE
EVP and CFO
Transactions
- Sale
Common Stock
2026-01-02$927.61/sh−80$74,209→ 71,252 total - Sale
Common Stock
2026-01-02$930.86/sh−194$180,587→ 71,058 total - Sale
Common Stock
2026-01-02$933.64/sh−80$74,691→ 70,978 total - Sale
Common Stock
2026-01-02$934.74/sh−40$37,390→ 70,938 total - Sale
Common Stock
2026-01-02$935.33/sh−80$74,826→ 70,858 total - Sale
Common Stock
2026-01-02$936.50/sh−120$112,380→ 70,738 total - Sale
Common Stock
2026-01-02$938.52/sh−460$431,719→ 70,278 total - Sale
Common Stock
2026-01-02$939.75/sh−117$109,951→ 70,161 total - Sale
Common Stock
2026-01-02$940.03/sh−40$37,601→ 70,121 total - Sale
Common Stock
2026-01-02$941.60/sh−406$382,290→ 69,715 total - Sale
Common Stock
2026-01-02$942.42/sh−74$69,739→ 69,641 total - Sale
Common Stock
2026-01-02$943.71/sh−539$508,660→ 69,102 total - Sale
Common Stock
2026-01-02$944.35/sh−650$613,828→ 68,452 total - Sale
Common Stock
2026-01-02$945.00/sh−40$37,800→ 68,412 total - Sale
Common Stock
2026-01-02$946.62/sh−80$75,730→ 68,332 total
Holdings
- 5,331(indirect: By Trust)
Common Stock
- 5,331(indirect: By Trust)
Common Stock
Footnotes (8)
- [F1]These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025.
- [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.
- [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.
- [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.
- [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.
- [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.
- [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.
- [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.