Insider Ledger
SIMO insider buying and SEC filings, explained
Silicon Motion Technology CORP · CIK 1329394
Tracked: Forms 3/4/5, 8-K, NT · Limited coverage: files 6-K/20-F, not covered in v1 · All filings on sec.gov
Company profile
- Exchanges
- Nasdaq
- Industry (SIC)
- Semiconductors & Related Devices
- State of incorporation
- E9
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$1.9M
Planned sales (10b5-1)
$0
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Jun 17–18, 2026 | Sale | Kuan-Ming Lin (Director) sold 3,000 shares between Jun 17 and Jun 18 at about $310.11 ($930K). Holdings down 29% to 7,500 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| Jun 2–18, 2026 | Sale | Han-Ping Shieh (Director) sold 2,000 shares between Jun 2 and Jun 18 at about $314.63 ($629K). Holdings down 23% to 6,656 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed Jun 24, 2026 |
| May 6, 2026 | Sale | Shii Tyng Duann (Director) sold 1,500 shares at $245.00 ($368K). Holdings down 9% to 15,200 shares. Not marked as a 10b5-1 plan trade. | SEC filing Filed May 7, 2026 |
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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