Transaction · 0001214659-26-010932

Dean Robert W II

DEAN ROBERT W II, IC, reported an open-market or private sale at MONOLITHIC POWER SYSTEMS, INC. involving 32.000000 shares for an estimated $41527.04. Reported holdings after the transaction were 7094.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SIC
MPWRMONOLITHIC POWER SYSTEMS, INC.
Trade date
Aug 24, 2026
Filing date
Aug 26, 2026
View on SEC Insider profile
Estimated value-$41.5kShares × reported price
Shares traded32$1,297.72 per share
Holdings after7.09kDirect
% of reported position traded0.45%This security and ownership context
How reported position traded is calculated

Shares sold ÷ (holdings after + shares sold). Estimated position before: 7,126 shares.

Row-level estimate for this security and ownership context, not the insider’s complete portfolio. Joint ownership, other transactions in the filing, amendments and footnotes can affect interpretation.

MPWR price since this filing

Daily closing prices, with the filing date and available return windows
MPWR · Daily closing priceLoading daily prices…
Filing dateReturn windows appear as prices become available.
Pre-filing1mo ago +2.3%1w ago +8.6%1d ago +1.0%
Returns since7d -6.5%30d +4.9%90d180d1y

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001214659-26-010932
Common Stock
Transaction date
Aug 24, 2026
Filed Aug 26, 2026, 11:22 PM · 2d delay
Shares
32 sh
$1,297.72 per share
Estimated value
-$41.5k
Computed from shares × price
Holdings after
7,094 sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $100kLarge $1.00M
Direct Ownership
Filing-only score

+10 points

Compact filing score computed from stored Form 4 facts. Version v1.

Positive filing signal

This filing has a modest positive filing-only score. Treat it as a useful flag for review, not as a buy signal.

How this score is calculated
  • direct_ownership+6 points

    direct_or_indirect_ownership = D

    Direct ownership reports the insider's personal stake.
  • timely_filing+4 points

    reporting_delay_days = 2

    Filing reported within two business days of the transaction.
Read the scoring methodology

Signed filing-only points, not a probability or expected return. Version v1.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

Interim CFO

Officer YesDirector No10% NoOther No
Footnotes & amended
  1. F1

    The reported sale was to cover tax withholding obligations upon the vesting of restricted stock units.

  2. 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 $1,296.07 to $1,298.01. The reporting perso…

  3. F3

    The reported transaction involved a transfer of securities from the reporting person's direct holdings to an individual who is not an immediate family member sharing the same household. No funds were…

Original filing · 0001214659-26-010932
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