UNITEDSTATES SECURITIESANDEXCHANGECOMMISSION WASHINGTON,D.C.20549 FORM20-F ☐REGISTRATIONSTATEMENTPURSUANTTOSECTION12(b)OR(g)OFTHESECURITIESEXCHANGEACTOF1934 OR ☐ANNUALREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 ForthefiscalyearendedDecember31,2023OR ☐TRANSITIONREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 OR ☐SHELLCOMPANYREPORTPURSUANTTOSECTION13OR15(d)OFTHESECURITIESEXCHANGEACTOF1934 CommissionFileNumber:000-30540 GIGAMEDIALIMITED (Exactnameofregistrantasspecifiedinitscharter) N/A (TranslationofRegistrant’snameintoEnglish) REPUBLICOFSINGAPORE (Jurisdictionofincorporationororganization) 8THFLOOR,NO.22,LANE407,SECTION2TIDINGBOULEVARD,TAIPEI114-740,TAIWAN,R.O.C. (Addressofprincipalexecutiveoffices) CHENG-MINGHUANG,ChiefExecutiveOfficer 8THFLOOR,NO.22,LANE407,SECTION2TIDINGBOULEVARD,TAIPEI114-740,TAIWAN,R.O.C. Tel:886-2-2656-8000;Fax:886-2-2656-8003 SecuritiesregisteredortoberegisteredpursuanttoSection12(b)oftheExchangeAct: TitleofEachClass TradingSymbol NameofEachExchangeonWhichRegistered OrdinaryShares GIGM TheNasdaqStockMarketLLC SecuritiesregisteredortoberegisteredpursuanttoSection12(g)oftheExchangeAct:NoneSecuritiesforwhichthereisareportingobligationpursuanttoSection15(d)oftheAct:None Indicatethenumberofoutstandingsharesofeachoftheissuer’sclassesofcapitalorcommonstockasofthecloseoftheperiodcoveredbytheannualreport: 11,052,235ordinaryshares Indicatebycheckmarkiftheregistrantisawell-knownseasonedissuer,asdefinedinRule405oftheSecuritiesAct.Yes☐No☐ Ifthisannualreportisanannualortransitionreport,indicatebycheckmarkiftheregistrantisnotrequiredtofilereportspursuanttoSection13or15(d)oftheSecuritiesExchangeActof1934.Yes☐No☐ Indicatebycheckmarkwhethertheregistrant(1)hasfiledallreportsrequiredtobefiledbySection13or15(d)oftheSecuritiesExchangeActof1934duringthepreceding12months(orforsuchshorterperiodthattheregistrantwasrequiredtofilesuchreports),and(2)hasbeensubjecttosuchfilingrequirementsforthepast90days.Yes☐No☐ IndicatebycheckmarkwhethertheregistranthassubmittedelectronicallyeveryInteractiveDataFilerequiredtobesubmittedpursuanttoRule405ofRegulationS–T(§232.405ofthischapter)duringthepreceding12months(orforsuchshorterperiodthattheregistrantwasrequiredtosubmitsuchfiles).Yes☐No☐ Indicatebycheckmarkwhethertheregistrantisalargeacceleratedfiler,anacceleratedfiler,anon-acceleratedfileroranemerginggrowthcompany.Seethedefinitionsof“largeacceleratedfiler,”“acceleratedfiler,”and“emerginggrowthcompany”inRule12b-2oftheExchangeAct.: Largeacceleratedfiler☐Acceleratedfiler☐ Non-acceleratedfiler☐Emerginggrowthcompany☐ IfanemerginggrowthcompanythatpreparesitsfinancialstatementsinaccordancewithU.S.GAAP,indicatebycheckmarkiftheregistranthaselectednottousetheextendedtransitionperiodforcomplyingwithanyneworrevisedfinancialaccountingstandards†providedpursuanttoSection13(a)oftheExchangeAct.☐ †Theterm“neworrevisedfinancialaccountingstandard”referstoanyupdateissuedbytheFinancialAccountingStandardsBoardtoitsAccountingStandardsCodificationafterApril5,2012. Indicatebycheckmarkwhethertheregistranthasfiledareportonandattestationtoitsmanagement’sassessmentoftheeffectivenessofitsinternalcontroloverfinancialreportingunderSection404(b)oftheSarbanes-OxleyAct(15U.S.C.7262(b))bytheregisteredpublicaccountingfirmthatpreparedorissueditsauditreport.☐ IfsecuritiesareregisteredpursuanttoSection12(b)oftheAct,indicatebycheckmarkwhetherthefinancialstatementsoftheregistrantincludedinthefilingreflectthecorrectionofanerrortopreviouslyissuedfinancialstatements.☐ Indicatebycheckmarkwhetheranyofthoseerrorcorrectionsarerestatementsthatrequirearecoveryanalysisofincentive-basedcompensationreceivedbyanyoftheregistrant’sexecutiveofficersduringtherelevantrecoverypursuantto§240.10D-1(b).☐ Indicatebycheckmarkwhichbasisofaccountingtheregistranthasusedtopreparethefinancialstatementsincludedinthisfiling: U.S.GAAP☐InternationalFinancialReportingStandardsasissuedbytheInternationalAccountingStandardsBoard☐Other☐ If“Other”hasbeencheckedinresponsetothepreviousquestion,indicatebycheckmarkwhichfinancialstatementitemtheregistranthaselectedtofollow.☐ Item17☐Item18 Ifthisisanannualreport,indicatebycheckmarkwhethertheregistrantisashellcompany(asdefinedinRule12b-2oftheExchangeAct).Yes☐No☐ AuditorFirmId:1060AuditorName:Deloitte&ToucheAuditorLocation:Taipei,Taiwan TABLEOFCONTENTS Pag e PARTI 3 ITEM1. IDENTITYOFDIRECTORS,SENIORMANAGEMENTANDADVISERS 3 ITEM2. OFFERSTATISTICSANDEXPECTEDTIMETABLE 3 ITEM3. KEYINFORMATION 3 ITEM4. INFORMATIONONTHECOMPANY 14 ITEM4A. UNRESOLVEDSTAFFCOMMENTS 24 ITEM5. OPERATINGANDFINANCIALREVIEWANDPROSPECTS 24 ITEM6. DIRECTORS,SENIORMANAGEMENTANDEMPLOYEES 34 ITEM7. MAJORSHAREHOLDERSANDRELATEDPARTYTRANSACTIONS 39 ITEM8. FINANCIALINFORMATION 40 ITEM9. THEOFFERANDLISTING 40 ITEM10.ADDITIONALINFORMATION40 ITEM11.QUANTITATIVEANDQUALITATIVEDISCLOSURESABOUTMARKETRISK47 ITEM12.DESCRIPTIONOFSECURITIESOTHERTHANEQUITYSECURITIES48 PARTII48 ITEM13.DEFAULTS,DIVIDENDARREARAGESANDDELINQUENCIES48 ITEM14.MATERIALMODIFICATIONSTOTHE