Compensation award — excluded from discretionary-purchase analysis.
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
Jul 25, 2026
Reporting period
Not applicable
Filed with the SEC
Jul 28, 2026
CFOGrant / award
Context
Classification
grant award
Code A — grant or award
Planned / mechanical clue
Footnote references vesting of compensation awards
Only flagged when a footnote says so; never inferred
Source receipt
Record ID
0001214659-26-009117
Filed / recorded
Jul 28, 2026, 10:42 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
Robert W Ii Dean
Relationship
Officer
Officer title
Interim CFO
Security
Common Stock
Table
Non-derivative (Table I)
Transaction date
Jul 25, 2026
Transaction code
A
Shares / units
1,359
Price per share
$0.00
Acquired / disposed
Acquired (A)
Shares owned after
7,237
Ownership form
Direct
Amendment
No
Footnotes from the filing
On July 25, 2023, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of stock price targets and relative total stockholder return percentile rank over a three-year performance period. On July 25, 2026, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance conditions for the MSUs, which resulted in an award of 1,359 shares to the reporting person. 1/3 of the shares will vest on July 25, 2027, 1/3 of the shares will vest on July 25, 2028, and 1/3 of the shares will vest on July 25, 2029, pursuant to the grant agreement.
