Transaction · 0001214659-26-001450

Tseng Saria

Tseng Saria, EVP, GC, reported an open-market or private sale at MONOLITHIC POWER SYSTEMS INC involving 22875.000000 shares for an estimated $26790369.64. Reported holdings after the transaction were 200626.000000 shares. A 10b5-1 reference was not detected in the stored filing text.

Open-market sellSEC transaction code SEVP, GC
MPWRMONOLITHIC POWER SYSTEMS INC
Filing timeFeb 10
Trade dateFeb 06, 2026
Filing · SECView on SEC
InsiderProfile

Price performance since filing

Close on the filing date, the pre-filing context, and the forward return at standard windows
Price at filing
$1,142.02
Pre-filing
1mo ago -16.0%1w ago -1.6%1d ago +1.2%
Returns since
7d +2.7%30d -9.5%90d +45.5%180d +22.7%1y +14.8%

MPWR price since this filing

30 days of pre-filing context and vertical markers at the filing date plus 7d / 30d / 90d / 180d / 1y afterwards
MPWR since 2026-02-10Filed 206 days ago · 30 days of pre-filing context shaded
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Filing datePost-filing windows (7d, 30d, 90d, 180d, 1y)30 days of pre-filing context

Transaction facts

Stored Form 4 columns with their raw values

Non-derivative
Type
Sell
Code S
Identifier
0001214659-26-001450
Common Stock
Transaction date
Feb 06, 2026
Filed Feb 10, 2026, 11:58 PM · 4d delay
Shares
22.8k sh
$117k per share
Estimated value
-$2.67B
Computed from shares × price
Holdings after
200k sh
Direct

Filing signal explanations

Badges describe filing facts only — not predictions.

Cluster 14dRepeat 30dPattern $10.0MLarge $100M
Cluster Selling Direct Ownership Large Sale
+6score
Filing-only score

+6

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.

Reported relationships & other filings

Form 4 relationship flags and nearby filing context

Reported roles

EVP & General Counsel

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

    The reported sales were to cover taxes upon the release of restricted stock units, as required by the Company's equity incentive plan.

Original filing · 0001214659-26-001450
Related transactions

0 other filings

Same reporting owner
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