Insider trade

Officer received an award of 57K MPWR shares

Traded Feb 3, 2026 · Filed Feb 6, 2026

Monolithic Power SystemsMPWR

57K
Shares

Why it stands out

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 Ownership

All the details

Dates, kept separate

Transaction date: Feb 3, 2026
Reporting period: Not applicable
Filed with the SEC: Feb 6, 2026

OfficerGrant / award

Context

Classification

grant award

Code A — grant or award

Planned / mechanical clue

Footnote references tax withholding

Only flagged when a footnote says so; never inferred

Source receipt

Record ID: 0001214659-26-001254
Filed / recorded

Feb 6, 2026, 12:29 AM 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

Feb 3, 2026

Transaction code

A

Shares / units

57,170

Price per share

$0.00

Acquired / disposed

Acquired (A)

Shares owned after

223,501

Ownership form

Direct

Amendment

No

Footnotes from the filing

On February 7, 2023, the reporting person was granted performance-based restricted stock units ("PSUs") subject to the achievement of performance conditions over a three-year performance period. On February 3, 2026, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the PSUs, which resulted in 57,170 shares being awarded to the reporting person, subject to tax withholdings. All of the shares fully vested and were released on February 3, 2026, pursuant to the grant agreement.