Key facts
- This page summarizes Shii Tyng Duann's Form 4 filing for Silicon Motion Technology CORP (SIMO).
- 1 reported transaction and 0 derivative rows are listed below.
- Accepted by SEC: 07 May 2026, 16:15.
Shii Tyng Duann - 06 May 2026 Form 4 Insider Report for Silicon Motion Technology CORP (SIMO)
- Reporting relationship
- Director
- Issuer ticker
- SIMO
- Reported as of
- 06 May 2026
- Net transaction value
- -$367,500
- SEC form
- 4
- Accepted by SEC
- 07 May 2026, 16:15:48 UTC
- Prior SEC filing
- 27 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Shii Tyng Duann
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Shii Tyng Duann filed Form 4 for Silicon Motion Technology CORP (SIMO) on 07 May 2026.
Change
- Previous filing in this sequence was filed on 27 Mar 2026.
- Current net transaction value: -$367,500.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001993728
Primary reporting owner
DUANN SHII TYNG
- Relationship
- Director
- Address
- C/O SILICON MOTION TECHNOLOGY CORP., FLAT C, 19/F, WING CHEONG COMMERCIAL BLD, HONG KONG ISLAND, HONG KONG
- Signature
- /s/ Shii Tyng Duann
- Signature date
- 06 May 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
SIMO
transaction
American depositary shares
Sale
- Transaction value
- $367,500
- Shares
- -1,500
- Change %
- -9%
- Price
- $245.00
- Shares after
- 15,200
- Date
- 06 May 2026
- Ownership
- Direct
- Footnotes
- F1
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 1 footnote
Footnote F1
Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp.