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<issuerName>DoubleDown Interactive Co., Ltd.</issuerName>
<secFileNumber>001-39349</secFileNumber>
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<street1 xmlns="http://www.sec.gov/edgar/common">13F, GANGNAM FINANCE CENTER</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, TEHERAN-RO GANGNAM-GU</street2>
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<issuerContactPhone>822-501-7216</issuerContactPhone>
<nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>STIC Special Situation Diamond Ltd.</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
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<relationshipToIssuer>Owner</relationshipToIssuer>
<relationshipToIssuer>10% Shareholder</relationshipToIssuer>
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<securitiesClassTitle>Common Shares, Par value KRW10,000 per share(1)</securitiesClassTitle>
<brokerOrMarketmakerDetails>
<name>B. Riley Securities, Inc.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">11100 Santa Monica Blvd.</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">Suite 800</street2>
<city xmlns="http://www.sec.gov/edgar/common">Los Angeles</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">CA</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">90025</zipCode>
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<aggregateMarketValue>1063680</aggregateMarketValue>
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<securitiesExchangeName>NASDAQ</securitiesExchangeName>
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<acquiredDate>05/25/2020</acquiredDate>
<natureOfAcquisitionTransaction>2.5% Convertible Bonds converted to Common Shares(2)</natureOfAcquisitionTransaction>
<nameOfPersonfromWhomAcquired>DoubleDown Interactive Co., Ltd.</nameOfPersonfromWhomAcquired>
<isGiftTransaction>N</isGiftTransaction>
<amountOfSecuritiesAcquired>3324</amountOfSecuritiesAcquired>
<paymentDate>05/26/2020</paymentDate>
<natureOfPayment>Cash(2)</natureOfPayment>
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<saleDate>11/06/2024</saleDate>
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<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/26/2024</saleDate>
<amountOfSecuritiesSold>1500</amountOfSecuritiesSold>
<grossProceeds>429858</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/23/2024</saleDate>
<amountOfSecuritiesSold>250</amountOfSecuritiesSold>
<grossProceeds>70312.5</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/22/2024</saleDate>
<amountOfSecuritiesSold>150</amountOfSecuritiesSold>
<grossProceeds>42218.7</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/21/2024</saleDate>
<amountOfSecuritiesSold>789</amountOfSecuritiesSold>
<grossProceeds>221699.26</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/20/2024</saleDate>
<amountOfSecuritiesSold>750</amountOfSecuritiesSold>
<grossProceeds>211587</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/19/2024</saleDate>
<amountOfSecuritiesSold>1980</amountOfSecuritiesSold>
<grossProceeds>553928.76</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/16/2024</saleDate>
<amountOfSecuritiesSold>1000</amountOfSecuritiesSold>
<grossProceeds>252020</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/15/2024</saleDate>
<amountOfSecuritiesSold>525</amountOfSecuritiesSold>
<grossProceeds>130653.6</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/14/2024</saleDate>
<amountOfSecuritiesSold>1750</amountOfSecuritiesSold>
<grossProceeds>431403</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/13/2024</saleDate>
<amountOfSecuritiesSold>980</amountOfSecuritiesSold>
<grossProceeds>246025.49</grossProceeds>
</securitiesSoldInPast3Months>
<securitiesSoldInPast3Months>
<sellerDetails>
<name>STIC Special Situation Diamond Ltd.</name>
<address>
<street1 xmlns="http://www.sec.gov/edgar/common">13F, Gangnam Finance Center</street1>
<street2 xmlns="http://www.sec.gov/edgar/common">152, Teheran-ro Gangnam-gu</street2>
<city xmlns="http://www.sec.gov/edgar/common">Seoul</city>
<stateOrCountry xmlns="http://www.sec.gov/edgar/common">M5</stateOrCountry>
<zipCode xmlns="http://www.sec.gov/edgar/common">06236</zipCode>
</address>
</sellerDetails>
<securitiesClassTitle>Common Shares, Par value KRW10,000 per share</securitiesClassTitle>
<saleDate>08/12/2024</saleDate>
<amountOfSecuritiesSold>162</amountOfSecuritiesSold>
<grossProceeds>39143.93</grossProceeds>
</securitiesSoldInPast3Months>
<remarks>Up to 66,480 American Depositary Shares ("ADSs"), each representing 0.05 share of a common share for an aggregate of 3,324 common shares, are expected to be sold.  "Number of Shares Outstanding" is based on common shares outstanding as of September 30, 2024.  "Aggregate Market Value" calculated on the closing price of ADSs on November 7, 2024, which was $16.00.  The ADSs are expected to be sold between November 13, 2024 and February 10, 2025. "Securities Sold During the Past 3 Months" were in the form of ADSs.
(2)	On May 26, 2017, STIC Special Situation Diamond Ltd. purchased the Issuer's 2.5% Convertible Bonds (the "Bonds") in cash.  The Bonds converted into common shares at a conversion price of KRW293,600 per common share for a total of 715,258 common shares in May and June of 2020.</remarks>
<noticeSignature>
<noticeDate>11/12/2024</noticeDate>
<signature>/s/ Jin Ho Chai, Director of STIC Special Situation Diamond Ltd.</signature>
</noticeSignature>
</formData>
</edgarSubmission>
