SEC Form 4 reporting owner

Blegen Theodore

Blegen Theodore has filed 29 Form 4 transactions reported between December 1, 2025 and February 6, 2026, as EVP and CFO of MONOLITHIC POWER SYSTEMS, INC..

Name as filed: BLEGEN THEODORE

Open-market buys, 24 mo
None
reported
Open-market sales, 24 mo
$33.1M
28 lines
Companies
1
with Form 4 filings
Latest transaction
Feb 6, 2026
transaction date

Roles and reported holdings

  • MPWRMONOLITHIC POWER SYSTEMS, INC.
    Dec 1, 2025 – Feb 6, 2026

    EVP and CFO

    Held directly82,353 sh as of Feb 6, 2026 · Form 4

    24 months: $33.1M sold

Transaction history

All 29 reported transactions, newest first. Every row links to the Form 4 on SEC EDGAR.

DateCompanyTypeSharesValueFiling
Feb 6, 2026MPWREVP and CFOOpen-market saleCode S · direct21,725$25.4M@ $1171.16Form 4
Feb 3, 2026MPWREVP and CFOGrant or awardCode A · direct38,745—Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct120$136K@ $1135.49Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct241$273K@ $1134.41Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct379$430K@ $1133.47Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct322$365K@ $1132.67Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct198$224K@ $1131.70Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct320$362K@ $1130.48Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct240$271K@ $1128.43Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct200$225K@ $1126.58Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct80$90K@ $1120.77Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct40$45K@ $1117.11Form 4
Feb 2, 2026MPWREVP and CFOOpen-market saleCode S · direct220$244K@ $1110.58Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct650$614K@ $944.35Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct539$509K@ $943.71Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct74$70K@ $942.42Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct406$382K@ $941.60Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct117$110K@ $939.75Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct460$432K@ $938.52Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct120$112K@ $936.50Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct40$37K@ $934.74Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct194$181K@ $930.86Form 4
Jan 2, 2026MPWREVP and CFOOpen-market saleCode S · direct80$74K@ $927.61Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct56$51K@ $911.59Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct1,984$1.8M@ $909.00Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct480$436K@ $908.69Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct120$109K@ $904.38Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct80$72K@ $901.88Form 4
Dec 1, 2025MPWREVP and CFOOpen-market saleCode S · direct40$36K@ $899.73Form 4

How this page is built

Every row comes from a Form 4 filed with the SEC, which officers, directors and holders of more than 10% of a company’s stock must file within two business days of a trade. Transactions are grouped by the reporting owner’s name as filed (spacing, capitals and punctuation ignored); two different people filing under an identical name would appear together, and one person filing under two spellings appears on two pages.

Open-market totals count code P purchases and code S sales over the last 24 months. The same trade reported on more than one filing is counted once; when another owner (for example a fund and its general partner) reports the identical trade, they are listed beside it. Holdings are the shares owned after the latest purchase, sale, gift or tax-withholding line, shown separately for direct and indirect ownership; an indirect figure is one holding line, not a total across every trust or entity.

This page describes what was filed with the SEC; it is not investment advice or a recommendation to buy or sell any security.