Reporting owner · CIK 0001445300
Dean Robert W Ii
Visual SEC Form 4 history across 1 companies, 3 transactions and 2 filings.
ICInterim CFOMONOLITHIC 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
Aug 26
−$50K
Transaction texture
Ownership and ticket size
Average P/S size$25K
Median P/S size$25K
Direct3
Indirect0
Aug 24, 2026other
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 Aug 24, 2026 valued at $41,527.
Review SEC filingLatest buy
No open-market insider purchase is available.
Latest sale
sale at MONOLITHIC POWER SYSTEMS, INC. on Aug 24, 2026 valued at $41,527.
Review SEC filingAssociated companies
Visual map of known reporting history
| Ticker | Insider | Role | Type | Shares | Value | Code | Signals | 90d return | Filed | Trans date |
|---|---|---|---|---|---|---|---|---|---|---|
| MPWR | DEAN ROBERT W II | IC | other | 5 | $0 | J | — | 08/26 | 08/24 | |
| MPWR | DEAN ROBERT W II | IC | sale | 32 | -$4.15M | S | — | 08/26 | 08/24 | |
| MPWR | DEAN ROBERT W II | IC | sale | 6 | -$848k | S | −6.5% | 08/20 | 08/17 |
Dean Robert W Ii Insider Activity FAQ
SEC Form 4 context
Who is Dean Robert W Ii?
Dean Robert W Ii is a reporting owner in SEC Form 4 filings with reporting owner CIK 0001445300.
Which companies has Dean Robert W Ii reported transactions for?
MONOLITHIC POWER SYSTEMS, INC.
When was Dean Robert W Ii's latest insider buy?
No open-market insider purchase is available for this period.
When was Dean Robert W Ii's latest insider sale?
sale at MONOLITHIC POWER SYSTEMS, INC. on Aug 24, 2026 valued at $41,527.
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.