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 24, 2025
Reporting period
Not applicable
Filed with the SEC
Dec 30, 2025
OfficerIndirect holdingGift / 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
0001214659-25-018632
Filed / recorded
Dec 30, 2025, 11:08 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
Saria Tseng
Relationship
Officer
Officer title
EVP & General Counsel
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Dec 24, 2025
Transaction code
G
Shares / units
1,000
Price per share
$0.00
Acquired / disposed
Acquired (A)
Shares owned after
1,000
Ownership form
Indirect — C&T Discovery Foundation
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 reporting person is the president of the foundation and maintains management and investment control over the shares. No funds were exchanged and no sale of shares occurred in the transfer of the shares.