Silicon Motion Technology CORP (SIMO)
Data as of , from SEC Form 4 filings.
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About Silicon Motion Technology CORP (SIMO)
Silicon Motion Technology CORP is an SEC registrant, filing under CIK 0001329394, classified as semiconductors and related devices. It is grouped with Information Technology companies on this site.
SIMO Form 4 activity by transaction type, last 90 days
No Form 4 activity for SIMO in the last 90 days.
SIMO insider transactions (Form 4)
63 Form 4 filings on record, the earliest from May 7, 2026, newest first.
| Date | Insider | Transaction | Security | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Han-Ping Shieh | Open-market sale | American depositary shares | 1,000 | $301.25 | $301K | |
| Han-Ping Shieh | Open-market sale | American depositary shares | 1,000 | $328.00 | $328K | |
| Kuan-Ming Lin | Open-market sale | American depositary shares | 1,000 | $320.31 | $320K | |
| Kuan-Ming Lin | Open-market sale | American depositary shares | 1,000 | $300.00 | $300K | |
| Kuan-Ming Lin | Open-market sale | American depositary shares | 1,000 | $310.01 footnote F2 | $310K | |
| ||||||
 Shii Tyng Duann | Open-market sale | American depositary shares | 1,500 | $245.00 footnote F1 | $368K | |
| ||||||
Recent SIMO Form 144 notices of proposed sale
3An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
| Filed | Filer | Relationship | Shares | Market value | Notice |
|---|---|---|---|---|---|
| - | - | - | - | View on EDGAR | |
| - | - | - | - |
SIMO insider trading FAQ
What is the latest insider trade for SIMO?
Silicon Motion Technology CORP (SIMO) has filed no insider reports in the last 90 days. The most recent on record is dated 2026-06-24. The full record for SIMO runs to 3 Form 4 filings, the earliest from 2026-05-07. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying SIMO stock?
No insider purchases of SIMO were filed in the last 90 days.
How many insiders are selling SIMO stock?
No insider sales of SIMO were filed in the last 90 days. 6 sales are on record for this company.
Where can I see SIMO SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects SIMO Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
More Information Technology companies with insider activity
Recent insider filings
3The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.
- - Han-Ping Shieh view on EDGAR
- - Kuan-Ming Lin view on EDGAR
- - Shii Tyng Duann view on EDGAR
Related companies with recent insider activity
Learn more
- What the Form 4 transaction codes mean
- Grants, option exercises, gifts and tax withholding are not trades on the market. The codes say which is which.
- Form 144 vs Form 4
- A Form 144 announces a planned sale; the Form 4 reports it after it happens.
- Insider activity in Information Technology
- Where SIMO's peers are being bought and sold.
- Every recent Form 4
- The market-wide feed, updated as filings arrive from SEC EDGAR.
Follow SIMO with a 7-day demo
- SIMO on your watchlist
- Every SIMO Form 4 filing on record
- Up to 3 months of SIMO price history
- The daily trading plan of ranked insider buys, on a delay, with the plan archive
