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Transaction #2821 · Form 4 · 0001214659-25-015477

MONOLITHIC POWER SYSTEMS, INC. · Stock award · Common Stock

MONOLITHIC POWER SYSTEMS, INC. · Transacted October 25, 2025 · Filed October 28, 2025

Original SEC filing ↗

What does this filing report?

An SEC Form 4 filing for MONOLITHIC POWER SYSTEMS, INC. records a stock award involving Common Stock on October 25, 2025. The reported quantity was 87,690. The filing date is October 28, 2025. This is one transaction record; amounts are not allocated among any joint reporting owners.

The acquisition category describes how securities were received. It does not by itself establish a cash purchase of common stock. Read the transaction code definitionsand the original filing before interpreting the amounts.

Transaction details

Company CIK
0001280452
Security type
Non-derivative
Acquisition type
Stock award · Code A
Quantity acquired
87,690
Reported price
0
Reference value
0
Currency
Currency not specified
Ownership
Direct
Holdings after transaction
125,630
Ownership description
Not reported
SEC acceptance time
Oct 28, 2025, 9:38 PM EDT
10b5-1 indication
Not indicated

Reference value is reported quantity × reported price. It is not a confirmed cash payment or an estimate of a derivative's economic value. A missing currency is not assumed to be USD.

Reporting owners

These are the reporting owners named in the filing. Quantities and amounts are not allocated among co-reporters. Roles reflect this filing, not a current profile.

Company listings

MPWR · Nasdaq · linked security

The linked listing is identified separately from other current company listings.

Filing footnotes & remarks

F1
On October 25, 2022, the reporting person was granted market-based restricted stock units ("MSUs") subject to the achievement of five stock price targets and relative total stockholder return percentile rank over a three-year performance and vesting period. On October 25, 2025, the Company's Compensation Committee of the Board of Directors certified and approved the achievement of the performance criteria for the MSUs, which resulted in 87,690 shares being awarded to the reporting person. All of the shares fully vested on October 25, 2025, pursuant to the grant agreement.

Footnotes are reproduced as plain text from the current source filing. For the full context, read the original SEC filing.

This record was updated Eastern Time. This is the stored record update time, not the transaction date. Report a correction.