Monolithic Power Systems (MPWR)Officer sold ~$155K

~$155K

Approx. value · 110 sh @ $1,405.71

152K

Holds after · shares reported

Traded

Jul 15, 2026

Filed

Jul 17, 2026

The story around this disclosure

Every dated public record OQRO holds about the company from 60 days before to 120 days after, oldest first. It shows what was going on; none of it is a stated reason for the trade.

1. May 15, 2026Insider · 1 personInsiders: 8 sales (~$18.7M)
2. May 18, 2026Insider · 2 peopleInsiders: 14 sales (~$59.3M)
3. May 22, 2026InsiderOfficer sold ~$7.93M of MPWR shares in the open market
4. May 26, 2026Insider · 2 peopleInsiders: 2 sales (~$853K)
5. May 27, 2026InsiderOfficer sold ~$12.9M of MPWR shares in the open market
6. Jun 1, 2026InsiderOfficer sold ~$46K of MPWR shares in the open market
7. Jun 5, 2026Congress · 1 personMembers of Congress: 2 sales
8. Jul 1, 2026InsiderOfficer sold ~$41K of MPWR shares in the open market
9. Jul 8, 20265% stakeFMR LLC reported a passive stake (13G) of 10.5%
10. Jul 15, 2026 · this disclosureInsiderOfficer sold ~$155K of MPWR shares in the open market

What came next

1. Jul 15, 20265% stakeInvesco Ltd. reported a passive stake (13G) of 5.2%
2. Jul 15, 2026Insider · 1 personInsiders: 17 sales (~$20.1M)
3. Jul 30, 2026Company filing · Form 8-K · ResultsReported its results
4. Aug 3, 2026InsiderOfficer sold ~$40K of MPWR shares in the open market
5. Aug 5, 2026InsiderCFO sold ~$141K of MPWR shares in the open market
6. Aug 11, 2026InsiderDirector sold ~$71K of MPWR shares in the open market
7. Aug 17, 2026InsiderCFO sold ~$8.5K of MPWR shares in the open market
8. Aug 24, 2026Insider · 2 peopleInsiders: 2 sales (~$106K)
9. Sep 14, 2026Government · Federal Register noticeNotice of Receipt of Complaint; Solicitation of Comments Relating to the Public Interest
10. Sep 28, 2026Insider · 1 personInsiders: 8 sales (~$40.3M)

How to read SEC Form 4

Form 4 is the filing that officers, directors and owners of more than 10% of a US-listed company must send to the SEC within two business days after they buy, sell or otherwise change their holding of the company's stock.

Full guide: What is an SEC Form 4?

What else is on file for Monolithic Power Systems

For Monolithic Power Systems, OQRO holds 33 insider filings (SEC Form 4 or Form 144), 2 Congress trade reports and 23 fund holdings reports (13F) dated in the last 90 days.

These are records OQRO holds, counted by their date, not a measure of how much trading took place. Routine paperwork such as option exercises and tax withholding is left out. Everything for the company is on its MPWR page.

Other recent filings by Maurice Sciammas, EVP, WW Sales & Marketing

• SEC Form 4 at Monolithic Power Systems (MPWR)Aug 5, 2026
• SEC Form 4 at Monolithic Power Systems (MPWR)Jul 17, 2026
• SEC Form 4 at Monolithic Power Systems (MPWR)Jul 17, 2026
• SEC Form 4 at Monolithic Power Systems (MPWR)Jul 17, 2026
• SEC Form 4 at Monolithic Power Systems (MPWR)Jul 17, 2026

The full history of Maurice Sciammas, EVP, WW Sales & Marketing is on the profile page.

How this filing works

• SEC Form 4
• Open-market purchase
• Rule 10b5-1 trading plans

Other disclosures at Monolithic Power Systems

• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026
• SEC Form 4Sep 30, 2026

Everything OQRO holds on this company is on its MPWR page.