4//SEC Filing
BLEGEN THEODORE 4
Accession 0001214659-26-001149
CIK 0001280452other
Filed
Feb 3, 7:00 PM ET
Accepted
Feb 4, 10:10 AM ET
Size
37.4 KB
Accession
0001214659-26-001149
Research Summary
AI-generated summary of this filing
Monolithic Power (MPWR) CFO Theodore Blegen Sells 3,000 Shares
What Happened Theodore Blegen, Executive Vice President and Chief Financial Officer of Monolithic Power Systems, sold a total of 3,000 shares in multiple open‑market transactions on February 2, 2026. The trades were executed at prices ranging roughly from $1,110.58 to $1,139.49 per share, generating aggregate gross proceeds of approximately $3,389,267. These sales were made pursuant to a pre‑planned Rule 10b5‑1 trading plan adopted by Mr. Blegen on February 26, 2025, and therefore represent planned dispositions rather than ad hoc purchases.
Key Details
- Transaction date: February 2, 2026 (report filed Feb 4, 2026).
- Number of shares sold: 3,000 (across 17 reported lots).
- Price range: approximately $1,110.58 to $1,139.49 per share (footnotes provide weighted‑average ranges for specific lines).
- Total proceeds: about $3,389,267.
- Footnotes: F1 confirms trades were made under a Rule 10b5‑1 plan (adopted 2/26/2025). F2–F14 explain weighted‑average price ranges for the grouped lines; F15 notes an ending balance adjustment for a one‑share rounding difference.
- Shares owned after the transactions: not provided in the excerpt of this filing.
- Filing timeliness: no late filing indicated (period of report 2/2/2026; Form 4 filed 2/4/2026).
Context Sales executed under a Rule 10b5‑1 plan are pre‑arranged and typically scheduled in advance, which can make them routine and not necessarily indicative of the insider’s current view of the company. For retail investors, purchases by insiders often carry more informational weight than planned sales; this report documents a planned sale by the CFO.
Insider Transaction Report
Form 4
BLEGEN THEODORE
EVP and CFO
Transactions
- Sale
Common Stock
[F1][F2]2026-02-02$1110.58/sh−220$244,328→ 68,112 total - Sale
Common Stock
[F1]2026-02-02$1117.11/sh−40$44,684→ 68,072 total - Sale
Common Stock
[F1]2026-02-02$1120.77/sh−80$89,662→ 67,992 total - Sale
Common Stock
[F1]2026-02-02$1122.56/sh−40$44,902→ 67,952 total - Sale
Common Stock
[F1][F3]2026-02-02$1126.58/sh−200$225,316→ 67,752 total - Sale
Common Stock
[F1][F4]2026-02-02$1127.39/sh−80$90,191→ 67,672 total - Sale
Common Stock
[F1][F5]2026-02-02$1128.43/sh−240$270,823→ 67,432 total - Sale
Common Stock
[F1][F6]2026-02-02$1129.28/sh−240$271,027→ 67,192 total - Sale
Common Stock
[F1][F7]2026-02-02$1130.48/sh−320$361,754→ 66,872 total - Sale
Common Stock
[F1][F8]2026-02-02$1131.70/sh−198$224,077→ 66,674 total - Sale
Common Stock
[F1][F9]2026-02-02$1132.67/sh−322$364,720→ 66,352 total - Sale
Common Stock
[F1][F10]2026-02-02$1133.47/sh−379$429,585→ 65,973 total - Sale
Common Stock
[F1][F11]2026-02-02$1134.41/sh−241$273,393→ 65,732 total - Sale
Common Stock
[F1][F12]2026-02-02$1135.49/sh−120$136,259→ 65,612 total - Sale
Common Stock
[F1][F13]2026-02-02$1136.35/sh−120$136,362→ 65,492 total - Sale
Common Stock
[F1]2026-02-02$1137.81/sh−80$91,025→ 65,412 total - Sale
Common Stock
[F1][F14][F15]2026-02-02$1139.49/sh−80$91,159→ 65,333 total
Holdings
- 5,331(indirect: By Trust)
Common Stock
- 5,331(indirect: By Trust)
Common Stock
Footnotes (15)
- [F1]These transactions were made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on 2/26/2025.
- [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 $1,133.00 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.
- [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 $1,134.00 to $1,134.78. 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.
- [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 $1,135.09 to $1,135.71. 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.
- [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 $1,136.18 to $1,136.69. 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.
- [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 $1,139.44 to $1,139.54. 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.
- [F15]Ending balance has been adjusted for a one share rounding difference.
- [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 $1,110.14 to $1,110.68. 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 $1,126.50 to $1,126.71. 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 $1,127.28 to $1,127.49. 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 $1,128.32 to $1,128.64. 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 $1,129.07 to $1,129.60. 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 $1,130.18 to $1,130.95. 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.
- [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 $1,131.38 to $1,131.91. 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.
- [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 $1,132.33 to $1,132.84. 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.
Signature
/s/ Saria Tseng, attorney-in-fact for Mr. Bernie Blegen|2026-02-02
Documents
Issuer
MONOLITHIC POWER SYSTEMS INC
CIK 0001280452
Entity typeother
Related Parties
1- filerCIK 0001415033
Filing Metadata
- Form type
- 4
- Filed
- Feb 3, 7:00 PM ET
- Accepted
- Feb 4, 10:10 AM ET
- Size
- 37.4 KB