Silicon Motion (SIMO) Director Duann Shii Tyng Sells Shares

What Happened
Duann Shii Tyng, a director of Silicon Motion Technology Corp. (SIMO), sold 1,500 American depositary shares (ADS) in an open-market sale on May 6, 2026, at $245.00 per ADS for a total transaction value of $367,500.

Key Details

• Transaction date and type: 2026-05-06 — Open-market sale (Code: S).
• Price and value: 1,500 ADS × $245.00 = $367,500.
• ADS conversion note (per filing footnote F1): each ADS represents 4 ordinary shares, so 1,500 ADS = 6,000 underlying ordinary shares.
• Shares owned after the transaction: not specified in the provided filing summary.
• Filing date/timeliness: Form 4 filed 2026-05-07 (transaction reported within the standard two-business-day window).

Context
This was a straight sale of ADSs by a company director. Sales are common insider transactions for liquidity or portfolio reasons and do not, by themselves, indicate the insider’s view of the company’s prospects.