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NEWS RELEASE Financial Highlights ● Net sales Gross margin Business Highlights Silicon Motion Announces Results for the Period Ended March 31 , 2021 Operating margin Earnings per diluted ADS 1 1Q 2021 GAAP 1Q 2021 Non - GAAP $ 182.4 million ( + 27 % Q / Q , + 37 % Y / Y ) $ 182.4 million ( + 27 % Q / Q , + 37 % Y / Y ) 50.0 % 50.7 % 24.3 % 26.6 % $ 0.98 $ 1.11 Achieved all - time record quarterly revenue and EPS Sales of SSD and eMMC + UFS controllers both reached record quarterly highs SSD controller sales increased 25 % to 30 % Q / Q and increased 45 % to 50 % Y / Y eMMC + UFS controller sales increased 30 % to 35 % Q / Q and increased 50 % to 55 % Y / Y SSD solutions sales increased 0 % to 5 % Q / Q and declined 40 % to 45 % Y / Y TAIPEI , Taiwan and MILPITAS , Calif . , May 6 , 2021 - Silicon Motion Technology Corporation ( NasdaqGS : SIMO ) ( " Silicon Motion " or the " Company ” ) today announced its financial results for the quarter ended March 31 , 2021. For the first quarter , net sales ( GAAP ) increased sequentially to $ 182.4 million from $ 143.9 million in fourth quarter 2020. Net income ( GAAP ) increased to $ 34.4 million or $ 0.98 per diluted ADS ( GAAP ) from net income ( GAAP ) of $ 1.4 million or $ 0.04 per diluted ADS ( GAAP ) in fourth quarter 2020 . For the first quarter , net income ( non - GAAP ) increased to $ 38.7 million or $ 1.11 per diluted ADS ( non GAAP ) from a net income ( non - GAAP ) of $ 29.9 million or $ 0.86 per diluted ADS ( non - GAAP ) in fourth quarter 2020 . First Quarter 2021 Review " As we had previously communicated , we are seeing very strong demand for our SSD and eMMC + UFS controllers , " said Wallace Kou , President and CEO of Silicon Motion . " Customer demand was well in excess of our ability to supply as both our foundry supply and inventory on hand are limited . "