Gift or transfer — classified separately from trades.
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 OwnershipAll the details
Dates, kept separate
Transaction date
Dec 9, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 11, 2025
CEOGift / transfer
Context
Classification
gift transfer
Code G — gift, bequest or transfer
Planned / mechanical clue
None found in footnotes
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001214659-25-017938
Filed / recorded
Dec 11, 2025, 9:03 PM UTC
Added to OQRO
Oct 2, 2026, 12:28 PM UTC
Parser
form4-xml-v1
Data quality
Verified: identifiers matched exactly
Issuer
MONOLITHIC POWER SYSTEMS INC
Issuer CIK
1280452
Ticker
MPWR
Reporting person
Michael Hsing
Relationship
Director, Officer
Officer title
CEO
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Dec 9, 2025
Transaction code
G
Shares / units
12,337
Price per share
$0.00
Acquired / disposed
Disposed (D)
Shares owned after
906,332
Ownership form
Direct
Amendment
No
Footnotes from the filing
The reported transaction involved a transfer of securities by gift from the reporting person's direct holdings to a 501(c)(3) foundation. The Company has determined that the reporting person does not have any management or investment control or any other pecuniary interest in the shares after the transfer. No funds were exchanged and no sale of shares occurred in the transfer.