Insider trade

CFO sold ~$141K of MPWR shares in the open market

Traded Aug 5, 2026 · Filed Aug 6, 2026

~$141K
Reported value · 105 sh @ $1,344.27: 7,132
Holds after · shares reported: +1.1%
stock since the trade · S&P 500 -0.8%, $1,345.455 → $1,360.97 on Oct 1

Why it stands out

The money chief of Monolithic Power Systems sold $141K of Monolithic Power Systems shares. Nobody planned it ahead of time.

Written from the filing's own figures. OQRO describes what was reported and never tells you what to buy or sell

View the official recordSEC Form 4 — Statement of Changes in Beneficial Ownership

All the details

Dates, kept separate

Transaction date: Aug 5, 2026
Reporting period: Not applicable
Filed with the SEC: Aug 6, 2026

CFO$100K–$500K

Context

Classification

open market sale

Code S — open-market or private sale

Absolute commitment

~$141,148

Shares × reported transaction price

Timing vs results

6 days after results of Jul 30, 2026

Results dates are the company's own 8-K (Item 2.02). Many companies only let insiders trade in a window after results

Price at the time

Closed at $1,345.455 on Aug 5, 2026, 69% above its 52-week low and 20% below its high, after a 6% drop over the previous 30 trading days

52-week range $797.51 (Aug 11, 2025) to $1,689.89 (Jun 3, 2026), 61% of the way up, from 251 adjusted closes. 30 trading days earlier: $1,423.76 on Jun 23, 2026. Describes the past only, not a forecast

Planned / mechanical clue

None found in footnotes

Only flagged when a footnote says so; never inferred

Securities lawsuit open at the trade date

A securities lawsuit naming the company as a defendant was filed on Feb 4, 2025 in the U.S. District Court, W.D. Washington. A filing is an allegation, not a finding.

Waterford Township General Employees Retirement System v. Monolithic Power Systems Inc, docket 2:25-cv-00220, via CourtListener (court records). Nature of suit 850, company named as first defendant