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Key filings, August 21, 2026

498 filings · 12 highlights
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Supply contracts 24

8/21Daechang SolutionWorth 138% of last year's revenue, over about 67 months.₩82.6B
8/21Inzi ControlsWorth 66.3% of last year's revenue, over about 88 months.₩476B
8/21AmendedSamho DevelopmentWorth 66.2% of last year's revenue, over about 53 months.₩210B
8/21VirnectWorth 29% of last year's revenue, over about 9 months.₩899.4M
8/21AmendedKorea Electronic Power Industrial DevelopmentWorth 23.8% of last year's revenue, over about 66 months.₩94B
8/21AmendedDx & VxWorth 22.1% of last year's revenue, over about 36 months.₩10.3B
8/21AmendedTSIWorth 21.9% of last year's revenue, over about 38 months.₩32.5B
8/21AmendedHantechWorth 18.5% of last year's revenue, over about 23 months.₩28.8B
8/21AmendedDongshinEngineering&ConstructionWorth 18.4% of last year's revenue, over about 34 months.₩9.2B
8/21AmendedWoori Technology, InWorth 17.4% of last year's revenue, over about 60 months.₩8.6B
8/21AmendedWoojin I&SWorth 11.6% of last year's revenue, over about 16 months.₩16B
8/21AmendedHDC HoldingsWorth 11% of last year's revenue.₩463B
8/21AmendedIpark Hyundai Development CompanyWorth 11% of last year's revenue.₩463B
8/21Sung Kwang BendWorth 10.4% of last year's revenue, over about 8 months.₩25.5B
8/21HD-Hyundai Marine EngineWorth 10.1% of last year's revenue, over about 34 months.₩40.5B
8/21AmendedKUMHO Engineering & ConstructionWorth 9% of last year's revenue, over about 36 months.₩185B
8/21AmendedHDC HoldingsWorth 7.8% of last year's revenue, over about 35 months.₩259B
8/21AmendedIpark Hyundai Development CompanyWorth 7.8% of last year's revenue, over about 35 months.₩259B
8/21AmendedDaewoo Engineering & ConstructionWorth 6.3% of last year's revenue, over about 48 months.₩736B
8/21Doosan EnerbilityWorth 5.4% of last year's revenue, over about 31 months.₩928B
8/21CSWorth 5.4% of last year's revenue, over about 4 months.₩1.3B
8/21AmendedKC CottrellWorth 2.8% of last year's revenue, over about 89 months.₩9.8B
8/21MNC SolutionWorth 2% of last year's revenue, over about 23 months.₩8.3B
8/21AmendedPosco Future MSupply contract terminated

Insider trades 54

8/21BuySpigen KoreaCEO bought 63,924 sh on the market at an average ₩28,719, Aug 13–19.₩1.8B
8/21AmendedNet saleSK hynixAn insider bought 5 sh and sold 600 sh, Feb 11–Aug 20: net sale of 595 sh.₩4.4M
8/21Net saleSK hynixAn insider bought 5 sh and sold 600 sh, Feb 11–Aug 20: net sale of 595 sh.₩4.4M
8/21Net saleDaewoong PharmaNational Pension Service bought 144,641 sh and sold 161,949 sh, Jul 7–Aug 18: net sale of 17,308 sh.₩19.3B
8/21SaleVivozon Pharmaceutical10%+ shareholder sold 100,000 sh on the market at an average ₩3,538, Aug 21.₩353.8M
8/21BuyDx & VxDirector bought 99,734 sh on the market at an average ₩2,755, Aug 18–20.₩274.8M
8/21BuyKbio LabsAn insider bought 172,175 sh on the market at an average ₩1,089, Aug 19–24.₩187.6M
8/21BuyWelcron Hantec10%+ shareholder bought 151,919 sh on the market at an average ₩1,046, Aug 13–24.₩159M
8/21BuyJeonjinbioCEO bought 74,778 sh on the market at an average ₩2,123, Aug 18–21.₩158.8M
8/21SaleCelltrionDirector sold 793 sh on the market at an average ₩198,414, Aug 21–24.₩157.3M
8/21BuyKSS Line10%+ shareholder bought 15,553 sh on the market at an average ₩10,114, Aug 19–20.₩157.3M
8/21AmendedBuyDx & VxDirector bought 48,049 sh on the market at an average ₩2,685, Aug 10–14.₩129M
8/21BuyMH MaterialsPresident bought 25,000 sh on the market at an average ₩4,190, Aug 19.₩104.8M
8/21BuySeoulAuctionCo.Ltd..Director bought 15,000 sh on the market at an average ₩5,598, Aug 13–20.₩84M
8/21Salekt alphaExecutive sold 5,898 sh on the market at an average ₩4,900, May 14.₩28.9M
8/21SaleSamsung Electronics Co,Executive sold 100 sh on the market at an average ₩242,000, Aug 13.₩24.2M
8/21BuyK AuctionCEO bought 5,500 sh on the market at an average ₩3,269, Aug 14.₩18M
8/21BuyBookook Securities10%+ shareholder bought 300 sh on the market at an average ₩54,100, Aug 21.₩16.2M
8/21BuyTYMPresident bought 2,000 sh on the market at an average ₩7,280, Aug 19.₩14.6M
8/21BuyE8Director bought 14,000 sh on the market at an average ₩857, Aug 14.₩12M
8/21BuyTBH Global10%+ shareholder bought 3,600 sh on the market at an average ₩2,160, Aug 13.₩7.8M
8/21BuyYoungWoo DSPDirector bought 7,637 sh on the market at an average ₩947, Aug 20.₩7.2M
8/21BuyYoungWoo DSPDirector bought 4,170 sh on the market at an average ₩969, Aug 18–20.₩4M
8/21SaleSensorviewAn insider sold 2,500 sh on the market at an average ₩1,550, Aug 13.₩3.9M
8/21BuyiADirector bought 740 sh on the market at an average ₩3,769, Aug 18–20.₩2.8M
8/21BuyChinyang ChemicalCEO bought 1,429 sh on the market at an average ₩1,033, Aug 21.₩1.5M
8/21Other changeCopus Korea10%+ shareholder's holding fell by 571,289 sh (conversion/exercise, off-market sale).-571,289 sh
8/21Other changeRaontechAn insider's holding fell by 305,000 sh (gift).-305,000 sh
8/21Other changeHugelChairman's holding rose by 15,643 sh (stock option).+15,643 sh
8/21Other changeYeSUN TechExecutive's holding fell by 185,976 sh (share consolidation/split).-185,976 sh
8/21AmendedOther changeFocus AI10%+ shareholder's holding rose by 6,561,250 sh (off-market buy, rights offering, other change).+6,561,250 sh
8/21Other changeSK hynixDirector's holding rose by 13 sh (other change).+13 sh
8/21Other changeSK hynixDirector's holding rose by 13 sh (other change).+13 sh
8/21Other changeSK hynixDirector's holding rose by 13 sh (other change).+13 sh
8/21Other changekakaopayAn insider's holding rose by 6,928 sh (stock option).+6,928 sh
8/21Other changeSK hynixDirector's holding rose by 13 sh (other change).+13 sh
8/21Other changeSK hynixDirector's holding rose by 13 sh (other change).+13 sh
8/21SaleCosmecca KoreaDirector sold 3,000 sh on the market, Aug 19.₩0
8/21Other changeSK hynixDirector's holding rose by 17 sh (other change).+17 sh
8/21Other changeNexusCEO's holding rose by 2,136,752 sh (rights offering).+2,136,752 sh
All insider trades →

5% holders 46

8/21New 5%KNS Space and DefenceA major holder's stake rose from 0.00% to 53.54% (new report).53.54%
8/21New 5%B2EnA major holder's stake rose from 0.00% to 11.68% (new report).11.68%
8/21Below 5%B2EnA major holder's stake fell from 21.26% to 0.00%.0.00%
8/21Agent AIA major holder's stake rose from 18.28% to 39.01% (rights offering).39.01%
8/21New 5%KNS Space and DefenceA major holder's stake rose from 0.00% to 9.87% (new report).9.87%
8/21New 5%DentisA major holder's stake rose from 0.00% to 8.40% (new report).8.40%
8/21New 5%DB Finance No.13 Special Purpose AcquisitionA major holder's stake rose from 0.00% to 6.71%.6.71%
8/21Below 5%AptnA major holder's stake fell from 15.11% to 0.00%.0.00%
8/21AptnA major holder's stake rose from 67.80% to 74.45% (conversion/exercise).74.45%
8/21AprogenA major holder's stake rose from 80.08% to 84.21% (conversion/exercise).84.21%
8/21SGA major holder's stake rose from 17.80% to 21.77% (off-market sale).21.77%
8/21MiraeA major holder's stake fell from 40.40% to 37.02%.37.02%
8/21Kumho HTA major holder's stake rose from 42.56% to 45.66% (open-market buy).45.66%
8/21G2gbioA major holder's stake fell from 25.34% to 22.90% (related-party change).22.90%
8/21Spigen KoreaA major holder's stake rose from 41.29% to 43.02% (related-party change).43.02%
8/21WebCashA major holder's stake fell from 36.10% to 34.46%.34.46%
8/21Camus Engineering & ConstructionA major holder's stake rose from 54.67% to 56.04% (pledge).56.04%
8/21BoosterA major holder's stake rose from 24.46% to 25.76%.25.76%
8/21NexusA major holder's stake rose from 58.12% to 59.17% (rights offering).59.17%
8/21Yoosung T&SA major holder's stake rose from 7.00% to 8.04%.8.04%
8/21Below 5%VirnectA major holder's stake fell from 5.69% to 4.69% (open-market sale).4.69%
8/21RaontechA major holder's stake fell from 28.68% to 27.69% (gift).27.69%
8/21JeonjinbioA major holder's stake rose from 8.93% to 9.75% (open-market buy).9.75%
8/21Kbio LabsA major holder's stake rose from 39.44% to 40.11% (open-market buy).40.11%
8/21SanigenA major holder's stake fell from 18.09% to 17.78% (open-market buy).17.78%
8/21INNOX Advanced MaterialsA major holder's stake rose from 33.59% to 33.85% (open-market buy).33.85%
8/21Dx & VxA major holder's stake rose from 62.23% to 62.40%.62.40%
8/21Great New wave ComingA major holder's stake rose from 73.71% to 73.81% (open-market buy).73.81%
8/21Genome&CompanyA major holder's stake fell from 9.65% to 9.58% (related-party change).9.58%
8/21Below 5%MKElectronA major holder's stake fell from 4.92% to 4.85%.4.85%
8/21Aprogen BiologicsA major holder's stake fell from 90.46% to 90.43% (conversion/exercise).90.43%
8/21YoungWoo DSPA major holder's stake rose from 20.04% to 20.06% (open-market buy).20.06%
8/21Bookook SecuritiesA major holder's stake rose from 35.12% to 35.12% (related-party change).35.12%
8/21Insun Environmental NEW TechnologyA major holder's stake rose from 45.95% to 45.95%.45.95%
8/21OE SolutionsA major holder's stake rose from 23.35% to 23.35% (pledge).23.35%
8/21ShinwonA major holder's stake rose from 26.76% to 26.76% (pledge).26.76%
8/21DreaminsightA major holder's stake rose from 57.63% to 57.63% (gift).57.63%
8/21CosmochemicalA major holder's stake rose from 30.56% to 30.56% (pledge).30.56%
8/21WinpacA major holder's stake rose from 47.96% to 47.96% (conversion/exercise).47.96%
8/21CS WindA major holder's stake rose from 38.89% to 38.89% (pledge).38.89%
All 5% holders →

Buybacks 5

8/21BuybackSamsung Electronics Co,Plans to buy back 53,285,968 sh of treasury stock, Aug 24 to Nov 21.₩15.00T
8/21TrustEuBiologicsEnded a share buyback trust contract.₩6B
8/21DisposalNobland InternationalPlans to dispose of 3,000 sh of treasury stock, Aug 28 to Aug 28.₩8.5M
8/21EuBiologicsShare cancellation
8/21Coreline SoftShare cancellation

Share issues & bonds 17

8/21CBFingerConversion price ₩10,860; if all converted, equal to 21.6% of shares outstanding.₩30B
8/21AmendedRights offeringHLB TherapeuticsIssuing 6,103,185 sh of new shares, equal to 6.9% of existing shares.₩11.2B
8/21CrowdWorksRights offering
8/21SKCRights offering
8/21AmendedSeoul Electronics & TelecomRights offering
8/21AmendedAdbiotechConvertible bond issue
8/21AmendedAdbiotechConvertible bond issue
8/21AmendedCSA CosmicRights offering
8/21AmendedCrowdWorksRights offering
8/21AmendedHyulim A-TechRights offering
8/21AmendedNexturn&rollkoreaRights offering
8/21AmendedDavolinkConvertible bond issue
8/21AmendedKespionRights offering
8/21AmendedHLB TherapeuticsConvertible bond issue
8/21AmendedHLB TherapeuticsConvertible bond issue
8/21N2techConvertible bond issue
8/21N2techConvertible bond issue

M&A & spin-offs 12

8/21AmendedHanwha GalleriaA ₩237B deal, equal to 11.7% of total assets.₩237B
8/21Samsung SDIA ₩4.45T deal, equal to 10.5% of total assets.₩4.45T
8/21AmendedKX InnovationMerger
8/21Asiana AirlinesMerger
8/21Hyundai Engineering & ConstructionMerger
8/21FingerStake acquisition/disposal
8/21AmendedKX InnovationMerger
8/21Air BusanMerger
8/21JIN AIR Co,Merger
8/21AmendedRevuStake acquisition/disposal
8/21KakaoMerger
8/21KakaoSpin-off / split

Exchange actions 12

8/21Hydro LithiumAdministrative issue
8/21Deep CommerceSpin-off / split
8/21EMnIExchange inquiry
8/21Daechang SolutionTrading halt
8/21Dongwon FisheriesInvestment caution
8/21Air BusanTrading halt
8/21JIN AIR Co,Trading halt
8/21SK hynixExchange inquiry
8/21SK hynixExchange inquiry
8/21HD Hyundai Heavy IndustriesExchange inquiry
8/21KakaoTrading halt
8/21HD Hyundai Heavy IndustriesExchange inquiry