Senior insider sale
CEO at MONOLITHIC POWER SYSTEMS, INC. — senior position signals high conviction
$40.35M
30K shares
What this filing means
HSING MICHAEL plans to sell 30K shares of MONOLITHIC POWER SYSTEMS, INC. valued at approximately $40.35M. Form 144 is a notice of intent to sell restricted or control securities — not a mandatory transaction. This filing provides advance warning of potential selling pressure.
Filed: 9/28/2026ACC: 0001950047-26-009850
DirectorOfficer· CEO
Since Jul 2018
30K
Shares to sell
$40.35M
Approx. market value
30K
Acquired (3 months)
1
Planned
Securities Acquired — Last 3 Months2
Performance Shares
Not Applicable
6/30/2023
29.96KEmployee Stock Purchase Plan
Cash
2/15/2023
39.00Total acquired30K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
6/30/2023 | Performance Shares Not Applicable | 29.96K | — |
2/15/2023 | Employee Stock Purchase Plan Cash | 39.00 | — |
| Total | 30K | ||
Planned & Completed Dispositions1
NASDAQPlanned
Units to sell
30K
Market value
$40.35M
9/28/2026
Total
Units
30K
Value
$40.35M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
9/28/2026 | 30K | $40.35M | NASDAQ | Planned |
| Total | 30K | $40.35M | ||