<?xml version="1.0" encoding="utf-8"?>
<ns1:informationTable xmlns:ns1="http://www.sec.gov/edgar/document/thirteenf/informationtable">
  <ns1:infoTable>
    <ns1:nameOfIssuer>SILICON MOTION TECHNOLOGY CO</ns1:nameOfIssuer>
    <ns1:titleOfClass>SPONSORED ADR</ns1:titleOfClass>
    <ns1:cusip>82706C108</ns1:cusip>
    <ns1:figi>BBG001SP0YQ8</ns1:figi>
    <ns1:value>13837500</ns1:value>
    <ns1:shrsOrPrnAmt>
      <ns1:sshPrnamt>270000</ns1:sshPrnamt>
      <ns1:sshPrnamtType>SH</ns1:sshPrnamtType>
    </ns1:shrsOrPrnAmt>
    <ns1:investmentDiscretion>DFND</ns1:investmentDiscretion>
    <ns1:otherManager>1</ns1:otherManager>
    <ns1:votingAuthority>
      <ns1:Sole>270000</ns1:Sole>
      <ns1:Shared>0</ns1:Shared>
      <ns1:None>0</ns1:None>
    </ns1:votingAuthority>
  </ns1:infoTable>
</ns1:informationTable>