Reporting owner · CIK 0001312593
Tseng Saria
Visual SEC Form 4 history across 1 companies, 8 transactions and 6 filings.
EVP, GCEVP & General CounselMONOLITHIC POWER SYSTEMS, INC.
Open-market mix
0%buys
Open-market buy performance
90-day forward return on this insider's open-market purchases
Forward return is not available yet
We compute this from each buy's stock performance 90 days after the transaction. The price history is still being populated for this insider's their open-market buys, so the average and median will appear here once the daily price refresh has covered the relevant trading days.
Monthly open-market activity
Reported purchase and sale transaction counts
Buys Sells
Net value flow
Buys minus sells
Feb 25
−$475.4K
Feb 26
−$26.8M
May 26
−$20.8M
Aug 26
$0
Transaction texture
Ownership and ticket size
Average P/S size$12M
Median P/S size$10.4M
Direct7
Indirect1
Aug 31, 2026gift
Filing-only signals
Deterministic matches in this insider's history
Latest Form 4 facts
Quick context from source filings
Latest transaction
sale at MONOLITHIC POWER SYSTEMS INC on May 27, 2026 valued at $12,860,500.
Review SEC filingLatest buy
No open-market insider purchase is available.
Latest sale
sale at MONOLITHIC POWER SYSTEMS INC on May 27, 2026 valued at $12,860,500.
Review SEC filingAssociated companies
Visual map of known reporting history
| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| MPWR | Tseng Saria | EVPGC | gift | 2.00k | $0 | G | 0.0% | 09/02 | 08/31 | |
| MPWR | Tseng Saria | EVPGC | gift | 2.00k | $0 | G | 0.0% | 09/02 | 08/31 | |
| MPWR | Tseng Saria | EVPGC | sale | 7.56k | -$1.28B | S | −16.1% | 05/29 | 05/27 | |
| MPWR | Tseng Saria | EVPGC | sale | 5.00k | -$793M | S | −18.9% | 05/27 | 05/22 | |
| MPWR | Tseng Saria | EVPGC | gift | 200 | $0 | G | −18.9% | 05/27 | 05/22 | |
| MPWR | Tseng Saria | EVPGC | sale | 22.8k | -$2.67B | S | +45.5% | 02/10 | 02/06 | |
| MPWR | Tseng Saria | EVPGC | grant | 57.1k | $0 | A | +28.1% | 02/06 | 02/03 | |
| MPWR | Tseng Saria | EVPGC | sale | 663 | -$47.5M | S | — | 02/12/2025 | 02/10/2025 |
Tseng Saria Insider Activity FAQ
SEC Form 4 context
Who is Tseng Saria?
Tseng Saria is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001312593.
Which companies has Tseng Saria reported transactions for?
MONOLITHIC POWER SYSTEMS, INC., MONOLITHIC POWER SYSTEMS INC
When was Tseng Saria's latest insider buy?
No open-market insider purchase is available for this period.
When was Tseng Saria's latest insider sale?
sale at MONOLITHIC POWER SYSTEMS INC on May 27, 2026 valued at $12,860,500.
Where can I see the original SEC filings?
Each transaction row links directly to the source SEC filing so the reported Form 4 details can be reviewed.
Are performance metrics included?
This version does not calculate win rates, forward returns, benchmark-adjusted returns, or high-conviction scores.