X0609 4 2026-06-02 0001329394 Silicon Motion Technology CORP SIMO 0001995456 SHIEH HAN-PING true C/O SILICON MOTION TECHNOLOGY CORP. FLAT C, 19/F, WING CHEONG COMMERCIAL BLD HONG KONG ISLAND K3 00000 HONG KONG true false American depositary shares 2026-06-02 4 S 0 1000 301.25 D 7655.87 D American depositary shares 2026-06-18 4 S 0 1000 328 D 6655.87 D Each American depositary share represents four ordinary shares, US$0.01 par value per share, of Silicon Motion Technology Corp. /s/ Han-Ping Shieh 2026-06-24