Silicon Motion Technology (SIMO) SEC Filings & 10K Form $82.75 +4.18 (+5.32%) Closing price 04:00 PM EasternExtended Trading$81.50 -1.25 (-1.51%) As of 05:50 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share SEC Filings Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesOptions ChainOwnershipSEC FilingsShort InterestTrendsBuy This Stock Recent Silicon Motion Technology SEC Filings All Filing Types 1 10 10-D 10-K 10-M 10-Q 11-K 12b-25 13F 13H 144 15 15F 17-H 18 18-K 19b-4(e) 19b-4 19b-7 1-A 1-E 1-K 1-N 1-SA 1-U 1-Z 20-F 24F-2 25 2-E 3 4 40-F 5 6-K 7-M 8-A 8-K 8-M 9-M ABS DD-15E ABS-15G ABS-EE ADV ADV-E ADV-H ADV-NR ADV-W ATS ATS-R BD BD-N BDW C CA-1 CB CFPORTAL D F-1 F-10 F-3 F-4 F-6 F-7 F-8 F-80 F-N F-X ID MA MA-I MA-NR MA-W MSD MSDW n/a N-14 N-17D-1 N-17f-1 N-17f-2 N-18f-1 N-1A N-2 N-23c-3 N-27D-1 N-3 N-4 N-5 N-54A N-54C N-6 N-6EI-1 N-6F N-8A N-8B-2 N-8B-4 N-8F N-CR N-CSR N-MFP N-PX N-Q NRSRO N-SAR PF PILOT R31 S-1 S-11 S-20 S-3 S-4 S-6 S-8 SBSE SBSE-A SBSE-BD SBSE-C SBSE-W SCI SD SDR SE SF-1 SF-3 SIP T-1 T-2 T-3 T-4 T-6 TA-1 TA-2 TA-W TCR TH WB-APP X-17A-19 X-17A-5 Part I X-17A-5 Part II X-17A-5 Part IIA X-17A-5 Part IIB X-17A-5 Part III X-17A-5 Schedule I X-17F-1A Filing Types Include Ownership Filings Exclude Ownership Filings Only Show Ownership FIlings Ownership Filings Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 2 Years 3 Years Time Frame Start Date End Date Export to Excel DateFilerForm TypeView08/06/202511:14 AMFMR LLC (Filed by)Silicon Motion Technology (Subject)Form SCHEDULE 13G/A07/08/20253:10 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 07/01/20253:04 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 06/25/20254:48 PMSHIEH HAN-PING (Reporting)Silicon Motion Technology (Subject)Form 144Notice of proposed sale of securities pursuant to Rule 144 05/30/20255:06 AMSilicon Motion Technology (Filer)Form SDSpecialized Disclosure Report 05/12/20256:08 PMDUANN SHII TYNG (Reporting)Silicon Motion Technology (Subject)Form 144Notice of proposed sale of securities pursuant to Rule 144 04/25/20258:26 AMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 01/07/20253:07 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 12/18/20247:37 AMFan Robert (Reporting)Silicon Motion Technology (Subject)Form 144Notice of proposed sale of securities pursuant to Rule 144 12/03/20242:22 PMDUANN SHII TYNG (Reporting)Silicon Motion Technology (Subject)Form 144Notice of proposed sale of securities pursuant to Rule 144 11/12/20249:34 AMFMR LLC (Filed by)Silicon Motion Technology (Subject)Form SC 13G10/30/20248:30 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 10/28/20243:10 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 10/08/20243:31 PMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 09/09/20247:00 AMSilicon Motion Technology (Filer)Form 6-KReport of foreign private issuer pursuant to Rule 13a-16 or 15d-16 under the Securities Exchange Act of 1934 (Data available from 1/1/2016 forward) Related Companies and Tools Related Companies NXT 10K Form QRVO 10K Form LITE 10K Form OLED 10K Form SITM 10K Form ALGM 10K Form TSEM 10K Form PI 10K Form LPL 10K Form COMM 10K Form SEC Filings Tools Latest SEC FilingsInsider Trading Activity This page (NASDAQ:SIMO) was last updated on 8/28/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredBREAKING: The House just passed 3 pro-crypto bills!THREE pro-crypto bills just passed the House! 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