Silicon Motion Technology CORP
SIMO- Exchange
- Nasdaq
- Industry
- Semiconductors & Related Devices
- SEC CIK
- 0001329394
No open-market purchases or sales by Silicon Motion Technology CORP insiders were filed in the last 90 days; 385 institutions reported holding it in 13F filings for Q2 2026, worth $8.28B in total; Maverick Capital is the only superinvestor holding it.
Open-market trades, last 90 days
Open-market purchases (P) and sales (S) by Silicon Motion Technology CORP insiders, counted by Form 4 filing. Trades with a flagged price and duplicate filings are left out.
- Open-market buys
- 0 filings
- Open-market sells
- 0 filings
- Insiders trading
- 0
- Net value
- $0
- Purchases minus sales
Insider roster
Directors, officers and 10% owners who have filed a Form 4 for Silicon Motion Technology CORP, current and former, most recent filer first. Last reported holding is the position after the last non-derivative trade in their latest filing.
| Name | Title | Last reported holding | Last filing | Filings, past year |
|---|---|---|---|---|
| Shieh Han-Ping | Director | 6,656 | Jun 24, 2026 | 1 |
| Lin Kuan-Ming | Director | 7,500 | Jun 24, 2026 | 1 |
| Duann Shii Tyng | Director | 15,200 | May 7, 2026 | 1 |
Insider trades
Each row adds up one type of transaction in one Form 4 filing. Only open-market purchases (P) and sales (S) are shown by default; use the filters to see grants, option exercises and other codes.
| Filed (ET) | Trade date | Filing delay | Insider | Transaction | Shares | Avg price | Value | Holding change | Flags |
|---|---|---|---|---|---|---|---|---|---|
| Jun 24, 2026 (view filing) | Jun 2-18 | 22 daysLate | Shieh Han-PingDirector | SSaleAmerican depositary shares | −2.00K | $314.63 | −$629.3K | −23.1%6.66K after | 2 lots |
| Jun 24, 2026 (view filing) | Jun 17-18 | 7 daysLate | Lin Kuan-MingDirector | SSaleAmerican depositary shares | −3.00K | $310.11 | −$930.3K | −28.6%7.50K after | 3 lots |
| May 7, 2026 (view filing) | May 6 | 1 day | Duann Shii TyngDirector | SSaleAmerican depositary shares | −1.50K | $245.00 | −$367.5K | −9.0%15.2K after |