Key facts
- This page summarizes Saria Tseng's Form 4 filing for MONOLITHIC POWER SYSTEMS INC (MPWR).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 29 May 2026, 18:43.
Saria Tseng - 27 May 2026 Form 4 Insider Report for MONOLITHIC POWER SYSTEMS INC (MPWR)
- Reporting relationship
- EVP & General Counsel
- Issuer ticker
- MPWR
- Reported as of
- 27 May 2026
- Net transaction value
- -$12,860,500
- SEC form
- 4
- Accepted by SEC
- 29 May 2026, 18:43:09 UTC
- Prior SEC filing
- 27 May 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Saria Tseng
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Saria Tseng filed Form 4 for MONOLITHIC POWER SYSTEMS INC (MPWR) on 29 May 2026.
Change
- Previous filing in this sequence was filed on 27 May 2026.
- Current net transaction value: -$12,860,500.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001312593
Primary reporting owner
Tseng Saria
- Relationship
- EVP & General Counsel
- Address
- 1555 PALM BEACH LAKES BLVD., WEST PALM BEACH
- Signature
- /s/ Saria Tseng
- Signature date
- 29 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
MPWR
transaction
Common Stock
Sale
- Transaction value
- $12,860,500
- Shares
- -7,565
- Change %
- -5%
- Price
- $1700.00
- Shares after
- 144,218
- Date
- 27 May 2026
- Ownership
- Direct
MPWR
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 1,000
- Date
- 27 May 2026
- Ownership
- C&T Discovery Foundation
* marks a reported price that did not pass the local price check.