Senior insider sale
CEO at MONOLITHIC POWER SYSTEMS INC — senior position signals high conviction
$170.46M
158.92K shares
What this filing means
HSING MICHAEL plans to sell 158.92K shares of MONOLITHIC POWER SYSTEMS INC valued at approximately $170.46M. 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: 2/10/2026ACC: 0001950047-26-001120
DirectorOfficer· CEO
Since Jul 2018
158.92K
Shares to sell
$170.46M
Approx. market value
34K
Acquired (3 months)
1
Planned
3 completed
Securities Acquired — Last 3 Months1
Performance Shares
Not Applicable
2/3/2026
34KTotal acquired34K
| Acquisition Date | Type | Amount Acquired | Gift |
|---|---|---|---|
2/3/2026 | Performance Shares Not Applicable | 34K | — |
| Total | 34K | ||
Planned & Completed Dispositions4
Completed
—Completed
Units to sell
54.92K
Market value
$64.32M
2/6/2026
—Completed
Units to sell
30K
Market value
$28.96M
11/12/2025
—Completed
Units to sell
40K
Market value
$38.34M
11/11/2025
Planned — Approximate Date
NASDAQPlanned
Units to sell
34K
Market value
$38.84M
2/10/2026
Total
Units
158.92K
Value
$170.46M
| Date | Units to Sell | Approx. Market Value | Exchange | Status |
|---|---|---|---|---|
| Completed | ||||
2/6/2026 | 54.92K | $64.32M | — | Completed |
11/12/2025 | 30K | $28.96M | — | Completed |
11/11/2025 | 40K | $38.34M | — | Completed |
| Planned — Approximate Date | ||||
2/10/2026 | 34K | $38.84M | NASDAQ | Planned |
| Total | 158.92K | $170.46M | ||