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Key filings, September 18, 2026

439 filings · 12 highlights
← September 17, 2026September 21, 2026 →

Supply contracts 22

9/18LS Marine SolutionWorth 64.2% of last year's revenue, over about 24 months.₩157B
9/18AmendedEcoSimplexWorth 49.7% of last year's revenue, over about 9 months.₩9B
9/18ST PharmWorth 27.5% of last year's revenue, over about 14 months.₩91.3B
9/18Dong-A PharmaceuticalWorth 27.5% of last year's revenue, over about 14 months.₩91.3B
9/18AmendedHD-Hyundai Marine EngineWorth 19.2% of last year's revenue, over about 36 months.₩34.4B
9/18AmendedHyosung ItxWorth 18.4% of last year's revenue, over about 39 months.₩94B
9/18AmendedNamkwang Engineering & ConstructionWorth 16.5% of last year's revenue.₩58.8B
9/18AmendedTuksuConstructionWorth 13.8% of last year's revenue, over about 24 months.₩32.1B
9/18AmendedDexter studiosWorth 12.8% of last year's revenue, over about 18 months.₩6.9B
9/18Nexa DynamicsWorth 12.2% of last year's revenue, over about 12 months.₩1.6B
9/18AmendedDohwa EngineeringWorth 8.1% of last year's revenue, over about 91 months.₩44.9B
9/18AmendedNauroboticsWorth 6.4% of last year's revenue, over about 6 months.₩800M
9/18HDC HoldingsWorth 5.6% of last year's revenue.₩232B
9/18Ipark Hyundai Development CompanyWorth 5.6% of last year's revenue.₩232B
9/18DhautonexWorth 5.5% of last year's revenue, over about 3 months.₩2.2B
9/18AmendedGS Engineering & ConstructionWorth 5.1% of last year's revenue, over about 51 months.₩658B
9/18AmendedGS Engineering & ConstructionWorth 5.1% of last year's revenue, over about 51 months.₩658B
9/18AmendedSamsung C&TWorth 4.3% of last year's revenue, over about 141 months.₩1.33T
9/18Daewoo Engineering & ConstructionWorth 3.6% of last year's revenue.₩291B
9/18AmendedHJ Shipbuilding & ConstructionWorth 3.4% of last year's revenue.₩60.1B
9/18AmendedDAE HWA PharmSupply contract terminated
9/18Studio DragonSingle sales/supply contract

Insider trades 74

9/18BuyWiSoL10%+ shareholder bought 532,466 sh on the market at an average ₩6,681, Sep 8–18.₩3.6B
9/18BuyKukil MetalCEO bought 210,056 sh on the market at an average ₩1,552, Sep 14–16.₩326.1M
9/18SalekakaopayAn insider sold 6,928 sh on the market at an average ₩46,481, Sep 15–16.₩322M
9/18BuyBookook Securities10%+ shareholder bought 6,328 sh on the market at an average ₩48,918, Sep 14–18.₩309.6M
9/18SaleKakaoAn insider sold 7,800 sh on the market at an average ₩34,375, Sep 16.₩268.1M
9/18SaleKakaoAn insider sold 7,500 sh on the market at an average ₩34,833, Sep 14.₩261.2M
9/18BuyUnickCEO bought 70,000 sh on the market at an average ₩3,732, Sep 16–22.₩261.2M
9/18BuyKX Hitech10%+ shareholder bought 159,000 sh on the market at an average ₩992, Sep 18.₩157.7M
9/18BuyJooyontechAn insider bought 249,205 sh on the market at an average ₩563, Sep 14–22.₩140.4M
9/18SaleMirae Asset Venture Investment10%+ shareholder sold 8,094 sh on the market at an average ₩16,147, Sep 9–18.₩130.7M
9/18SaleEugeneTechnologyExecutive sold 700 sh on the market at an average ₩154,300, Sep 14.₩108M
9/18BuyClean & Science10%+ shareholder bought 29,562 sh on the market at an average ₩3,173, Sep 16–17.₩93.8M
9/18SaleMirae Asset SecuritiesExecutive sold 2,585 sh on the market at an average ₩31,754, Sep 18.₩82.1M
9/18BuySamsung Electronics Co,Director bought 300 sh on the market at an average ₩253,250, Sep 15–16.₩76M
9/18BuyGenolutionCEO bought 35,664 sh on the market at an average ₩1,437, Aug 14–Sep 22.₩51.3M
9/18BuyLithium-for-earthDirector bought 23,657 sh on the market at an average ₩1,924, Sep 14–18.₩45.5M
9/18BuySamsung Electronics Co,Director bought 148 sh on the market at an average ₩273,500, Sep 11.₩40.5M
9/18SaleMcnexDirector sold 1,500 sh on the market at an average ₩18,847, Jul 15–Sep 11.₩28.3M
9/18SaleHancomDirector sold 1,500 sh on the market at an average ₩17,358, Sep 16.₩26M
9/18BuyClean & ScienceDirector bought 6,607 sh on the market at an average ₩3,084, Sep 11–15.₩20.4M
9/18BuyOptipharm.CEO bought 3,000 sh on the market at an average ₩4,733, Sep 11–18.₩14.2M
9/18BuyFSNCEO bought 7,657 sh on the market at an average ₩1,307, Sep 15–16.₩10M
9/18BuyHyundai Engineering & ConstructionExecutive bought 75 sh on the market at an average ₩125,500, Sep 18.₩9.4M
9/18SaleL&C BIOCEO sold 100 sh on the market at an average ₩77,700, Jan 29.₩7.8M
9/18BuyGenolutionCEO bought 5,183 sh on the market at an average ₩1,406, Sep 11–15.₩7.3M
9/18BuyMobidaysCEO bought 690 sh on the market at an average ₩4,248, Sep 14–18.₩2.9M
9/18BuyiADirector bought 291 sh on the market at an average ₩3,311, Sep 16–18.₩963,523
9/18BuyHyungji EliteCEO bought 2,450 sh on the market at an average ₩332, Sep 15–16.₩813,450
9/18Other changeGencurixOutside director's holding rose by 10,670 sh (merger).+10,670 sh
9/18Net buyWelkeeps Hitech10%+ shareholder bought 39,224 sh and sold 100 sh, Sep 14–18: net buy of 39,124 sh.₩0
9/18Other changeSK D&D10%+ shareholder's holding rose by 35,179,379 sh (other change).+35,179,379 sh
9/18Other changeEcopro BMExecutive's holding rose by 162 sh (other change).+162 sh
9/18Other changeGencurixDirector's holding rose by 86,764 sh (merger).+86,764 sh
9/18Other changeHLB GlobalDirector's holding rose by 527,472 sh (other change).+527,472 sh
9/18Other changeEcopro BM10%+ shareholder's holding rose by 3,638,442 sh (other change).+3,638,442 sh
9/18Other changeEcopro BMExecutive's holding rose by 24 sh (other change).+24 sh
9/18Other changeEcopro BMExecutive's holding rose by 8 sh (other change).+8 sh
9/18Other changeEcopro BMExecutive's holding rose by 145 sh (other change).+145 sh
9/18Other changeEcopro BMExecutive's holding rose by 391 sh (other change).+391 sh
9/18Other changeEcopro BMExecutive's holding rose by 7 sh (other change).+7 sh
All insider trades →

5% holders 43

9/18New 5%Hwail PharmA major holder's stake rose from 0.00% to 27.84%.27.84%
9/18New 5%BK HoldingsA major holder's stake rose from 0.00% to 22.92% (rights offering).22.92%
9/18AmendedOscotecA major holder's stake rose from 12.45% to 22.25% (related-party change).22.25%
9/18Below 5%RayA major holder's stake fell from 5.37% to 0.00% (conversion/exercise).0.00%
9/18Satoshi HoldingsA major holder's stake fell from 12.83% to 7.65%.7.65%
9/18Silicon 2A major holder's stake rose from 43.62% to 48.80% (rights offering).48.80%
9/18Below 5%FingerA major holder's stake fell from 4.66% to 0.00%.0.00%
9/18WiSoLA major holder's stake rose from 35.93% to 39.38% (open-market buy).39.38%
9/18Kanaph TherapeuticsA major holder's stake fell from 38.69% to 36.04% (related-party change).36.04%
9/18L&C BIOA major holder's stake rose from 21.92% to 24.43% (conversion/exercise).24.43%
9/18Keyang Electric MachineryA major holder's stake fell from 44.96% to 42.53% (rights offering).42.53%
9/18Kukil MetalA major holder's stake rose from 44.32% to 46.21%.46.21%
9/18JooyontechA major holder's stake rose from 41.74% to 43.54% (open-market buy).43.54%
9/18UnickA major holder's stake rose from 27.78% to 29.11% (gift).29.11%
9/18Below 5%Korea No.16 Special Purpose AcquisitionA major holder's stake fell from 5.53% to 4.46%.4.46%
9/18Dongil IndustriesA major holder's stake rose from 48.01% to 48.53% (open-market buy).48.53%
9/18Kolon TissueGeneA major holder's stake fell from 65.79% to 65.51% (related-party change).65.51%
9/18Miwon HoldingsA major holder's stake rose from 76.81% to 77.06% (related-party change).77.06%
9/18National Plastic CompanyA major holder's stake rose from 58.29% to 58.46% (pledge).58.46%
9/18Fine M-TecA major holder's stake fell from 27.12% to 26.97% (pledge).26.97%
9/18Miwon ChemicalsA major holder's stake rose from 55.61% to 55.66% (related-party change).55.66%
9/18Sinjin SMA major holder's stake rose from 50.98% to 51.00% (open-market buy).51.00%
9/18FSNA major holder's stake rose from 29.03% to 29.05% (open-market buy).29.05%
9/18From BioA major holder's stake fell from 41.36% to 41.34% (related-party change).41.34%
9/18Hanwha SystemsA major holder's stake fell from 59.54% to 59.53% (related-party change).59.53%
9/18Bookook SecuritiesA major holder's stake rose from 35.28% to 35.29% (related-party change).35.29%
9/18MobidaysA major holder's stake rose from 50.48% to 50.49% (open-market buy).50.49%
9/18Seobu T&DA major holder's stake rose from 49.93% to 49.93% (pledge).49.93%
9/18Lotte Tour DevelopmentA major holder's stake rose from 50.80% to 50.80% (pledge).50.80%
9/18LFA major holder's stake rose from 58.99% to 58.99% (pledge).58.99%
9/18KolonA major holder's stake rose from 52.38% to 52.38% (pledge).52.38%
9/18ArootReport of 5%+ holding
9/18DAE Dong SteelA major holder's stake rose from 42.59% to 42.59% (inheritance).42.59%
9/18Hwail PharmA major holder's stake rose from 42.10% to 42.10%.42.10%
9/18BinexA major holder's stake rose from 10.76% to 10.76% (share lending).10.76%
9/18KukjeonA major holder's stake rose from 52.23% to 52.23% (pledge).52.23%
9/18Daegu Department StoreA major holder's stake rose from 32.64% to 32.64% (pledge).32.64%
9/18DoosanA major holder's stake rose from 41.04% to 41.04%.41.04%
9/18AlmacA major holder's stake rose from 36.77% to 36.77% (pledge).36.77%
9/18DowooinsysA major holder's stake rose from 47.91% to 47.91%.47.91%
All 5% holders →

Buybacks 9

9/18BuybackHandsomePlans to buy back 629,327 sh of treasury stock, Sep 21 to Oct 22.₩10B
9/18BuybackShinhungPlans to buy back 100,000 sh of treasury stock, Sep 21 to Dec 20.₩1.4B
9/18BuybackExemPlans to buy back 793,021 sh of treasury stock, Sep 19 to Oct 7.₩1000M
9/18TrustSamjin LND CompanyEnded a share buyback trust contract.₩846M
9/18DisposalAdvanced Nano ProductsPlans to dispose of 5,913 sh of treasury stock, Sep 21 to Nov 20.₩305.1M
9/18DisposalHytcPlans to dispose of 25,000 sh of treasury stock, Sep 21 to Oct 16.₩80.3M
9/18CU TechShare cancellation
9/18INFOvineShare cancellation
9/18HandsomeShare cancellation

Share issues & bonds 13

9/18AmendedRights offeringKespionIssuing 10,752,688 sh of new shares, equal to 112.1% of existing shares.₩13B
9/18AmendedRights offeringSatoshi HoldingsIssuing 5,509,745 sh of new shares, equal to 105.9% of existing shares.₩14.7B
9/18AmendedRights offeringNC&Issuing 4,000,000 sh of new shares, equal to 79.7% of existing shares.₩10B
9/18CJ CGVCapital reduction
9/18AmendedWoosung MaterialsRights offering
9/18AmendedTHE CodiRights offering
9/18AmendedTHE CodiRights offering
9/18AmendedWoosung MaterialsRights offering
9/18AmendedWoosung MaterialsRights offering
9/18AmendedKyung NAM PharmRights offering
9/18AmendedMsdiRights offering
9/18AmendedInsanRights offering
9/18AmendedSAMBO IndustrialRights offering

M&A & spin-offs 8

9/18AmendedKeyang Electric MachineryA ₩68B deal, equal to 30.9% of total assets.₩68B
9/18Kornic AutomationA ₩8B deal, equal to 16.5% of total assets.₩8B
9/18Episode CompanyA ₩4B deal, equal to 14.2% of total assets.₩4B
9/18Keyang Electric MachineryTangible asset deal
9/18Kyobo 16 Special Purpose Acquisition CompanyMerger
9/18SM KukilMerger
9/18AmendedCosmecca KoreaMerger
9/18AmendedKumyangSpin-off / split

Exchange actions 18

9/18Mgen SolutionsTrading halt
9/18Q AIDTrading halt
9/18ZaigleTrading halt
9/18XavisSpin-off / split
9/18OmnisystemSpin-off / split
9/18Kbio LabsTrading halt
9/18Alpha AIUnfaithful disclosure
9/18Kyobo 16 Special Purpose Acquisition CompanyMerger
9/18ESTaidTrading halt
9/18Jeil M&STrading halt
9/18Jeil M&SExchange
9/18EMnIExchange inquiry
9/18Samyung ENCTrading halt
9/18Samyung ENCExchange
9/18SK hynixExchange inquiry
9/18ShinpoongExchange inquiry
9/18KakaoExchange inquiry
9/18HD Hyundai Heavy IndustriesExchange inquiry