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Key filings, May 18, 2026

410 filings · 7 highlights
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Supply contracts 17

5/18AmendedSphereWorth 53.6% of last year's revenue, over about 13 months.₩1.4B
5/18MOTWorth 53% of last year's revenue, over about 10 months.₩40B
5/18AmendedSphereWorth 51.3% of last year's revenue, over about 10 months.₩1.3B
5/18Nexa DynamicsWorth 41.5% of last year's revenue, over about 17 months.₩5.4B
5/18Seojin SystemWorth 17.5% of last year's revenue, over about 19 months.₩187B
5/18AutocryptWorth 11.4% of last year's revenue, over about 26 months.₩2.9B
5/18Chinhung InternationalWorth 10.9% of last year's revenue.₩62.6B
5/18Woori Technology, InWorth 10.6% of last year's revenue, over about 20 months.₩9.2B
5/18Samsung Heavy IndustriesWorth 10.6% of last year's revenue, over about 37 months.₩1.12T
5/18HimsWorth 9.3% of last year's revenue, over about 7 months.₩5.5B
5/18AmendedDong-Ah Geological Engineering CompanyWorth 9.3% of last year's revenue.₩36.6B
5/18Hansung CleantechWorth 7.8% of last year's revenue, over about 15 months.₩15.5B
5/18Hansung CleantechWorth 7.8% of last year's revenue, over about 15 months.₩15.5B
5/18AmendedHanwha OceanWorth 7% of last year's revenue, over about 36 months.₩756B
5/18NauroboticsWorth 6.4% of last year's revenue, over about 4 months.₩800M
5/18AmendedHJ Shipbuilding & ConstructionWorth 3.9% of last year's revenue, over about 49 months.₩73.4B
5/18AmendedKUMHO Engineering & ConstructionSingle sales/supply contract

Insider trades 123

5/18Cosmo RoboticsInsider ownership report
5/18SyntekaBioInsider ownership report
5/18DkmeInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18SungwooelectronicsInsider ownership report
5/18Welcron HantecInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18Welcron HantecInsider ownership report
5/18Daeyang ElectricInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18BillionsInsider ownership report
5/18Daeyang ElectricInsider ownership report
5/18Daeyang ElectricInsider ownership report
5/18Miwon HoldingsInsider ownership report
5/18Daeyang ElectricInsider ownership report
5/18OyangInsider ownership report
5/18Cosmo RoboticsInsider ownership report
5/18MegatouchInsider ownership report
5/18Daeyang ElectricInsider ownership report
5/18MegatouchInsider ownership report
5/18MegatouchInsider ownership report
5/18JeioInsider ownership report
5/18MegatouchInsider ownership report
5/18BYCInsider ownership report
5/18Eone Diagnomics Genome CenterInsider ownership report
5/18DIOInsider ownership report
5/18CJ FreshwayInsider ownership report
5/18DIOInsider ownership report
5/18Eone Diagnomics Genome CenterInsider ownership report
5/18Hite JinroInsider ownership report
5/18GriteeInsider ownership report
5/18Hite JinroInsider ownership report
5/18Hite JinroInsider ownership report
5/18Hite JinroInsider ownership report
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5% holders 37

5/18New 5%Cosmo RoboticsA major holder's stake rose from 0.00% to 37.95%.37.95%
5/18Below 5%Eone Diagnomics Genome CenterA major holder's stake fell from 20.43% to 2.54% (conversion/exercise).2.54%
5/18BillionsA major holder's stake rose from 40.94% to 57.12% (related-party change).57.12%
5/18New 5%Hansol ChemicalA major holder's stake rose from 0.00% to 5.33% (new report).5.33%
5/18New 5%Hanla IMSA major holder's stake rose from 4.88% to 6.74%.6.74%
5/18AmendedDkmeA major holder's stake rose from 30.76% to 38.54% (rights offering).38.54%
5/18Below 5%Eone Diagnomics Genome CenterA major holder's stake fell from 7.95% to 1.30% (conversion/exercise).1.30%
5/18Below 5%RayA major holder's stake fell from 5.19% to 0.00% (share lending).0.00%
5/18Below 5%NH Special Purpose Acquisition 31 CompanyA major holder's stake rose from 0.00% to 4.72%.4.72%
5/18Below 5%PoledA major holder's stake fell from 8.00% to 4.00%.4.00%
5/18SungwooelectronicsA major holder's stake rose from 41.79% to 45.43% (conversion/exercise).45.43%
5/18JIN Yang PharmaceuticalA major holder's stake fell from 31.07% to 27.56% (related-party change).27.56%
5/18BMTA major holder's stake fell from 8.50% to 5.30% (conversion/exercise).5.30%
5/18Below 5%FNS TechA major holder's stake fell from 6.76% to 4.90% (conversion/exercise).4.90%
5/18ICHA major holder's stake rose from 38.90% to 40.43% (related-party change).40.43%
5/18CowayA major holder's stake rose from 25.09% to 26.47% (related-party change).26.47%
5/18ShinhwapritechA major holder's stake rose from 44.98% to 46.15%.46.15%
5/18Sung Kwang BendA major holder's stake rose from 5.08% to 6.20%.6.20%
5/18LFA major holder's stake rose from 58.29% to 58.99% (pledge).58.99%
5/18Welcron HantecA major holder's stake rose from 34.18% to 34.68% (related-party change).34.68%
5/18Dongwon IndustriesA major holder's stake fell from 78.74% to 78.25% (related-party change).78.25%
5/18Miwon HoldingsA major holder's stake rose from 76.34% to 76.81% (related-party change).76.81%
5/18SyntekaBioA major holder's stake rose from 15.32% to 15.69% (open-market buy).15.69%
5/18XavisA major holder's stake fell from 30.15% to 29.90% (gift).29.90%
5/18KyungnongA major holder's stake rose from 67.80% to 68.03% (pledge).68.03%
5/18AmendedDongwon IndustriesA major holder's stake fell from 78.92% to 78.74% (related-party change).78.74%
5/18K AuctionA major holder's stake rose from 50.82% to 51.00% (open-market buy).51.00%
5/18SSRA major holder's stake rose from 49.25% to 49.41% (open-market buy).49.41%
5/18Spigen KoreaA major holder's stake rose from 41.14% to 41.29% (related-party change).41.29%
5/18TongyangA major holder's stake fell from 30.46% to 30.33% (related-party change).30.33%
5/18CreverA major holder's stake rose from 25.26% to 25.35% (open-market buy).25.35%
5/18Hite JinroA major holder's stake rose from 53.81% to 53.82% (related-party change).53.82%
5/18LB SemiconA major holder's stake rose from 27.24% to 27.24% (pledge).27.24%
5/18Samji ElectronicsA major holder's stake rose from 46.12% to 46.12% (pledge).46.12%
5/18AJ NetworksA major holder's stake rose from 55.89% to 55.89%.55.89%
5/18IteyesReport of 5%+ holding
5/18H.pioA major holder's stake rose from 73.15% to 73.15% (share lending).73.15%

Buybacks 12

5/18AmendedBuybackHansol ChemicalPlans to buy back 184,050 sh of treasury stock, May 19 to Aug 18.₩60B
5/18TrustNeowiz HoldingsSigned a ₩10B trust contract to buy back shares.₩10B
5/18DisposalHansol ChemicalPlans to dispose of 110,000 sh of treasury stock, May 26 to Dec 31.₩9.3B
5/18TrustDevelopment Advance SolutionEnded a share buyback trust contract.₩2B
5/18BuybackIntermPlans to buy back 220,000 sh of treasury stock, May 19 to Aug 18.₩229.2M
5/18DisposalKorean DrugPlans to dispose of 123 sh of treasury stock, May 19 to Jun 19.₩466,785
5/18AmendedSandollShare cancellation
5/18Jeongmoon InformationShare cancellation
5/18Hansol ChemicalShare cancellation
5/18Shinsung E&GShare cancellation
5/18AmendedShinsung E&GShare cancellation
5/18Hansol ChemicalTreasury stock acquisition

Share issues & bonds 11

5/18AmendedRights offeringU.i.displayIssuing 1,863,931 sh of new shares, equal to 13.1% of existing shares.₩2B
5/18AmendedRights offeringU.i.displayIssuing 897,552 sh of new shares, equal to 6.3% of existing shares.₩990M
5/18CBCytogenConversion price ₩5,445; if all converted, equal to 4% of shares outstanding.₩5.2B
5/18AmendedCBARIBIO HoldingsConversion price ₩3,412; if all converted, equal to 3% of shares outstanding.₩5B
5/18SocarRights offering
5/18JOLRights offering
5/18AmendedARIBIO HoldingsConvertible bond issue
5/18AmendedParatech CompanyConvertible bond issue
5/18AmendedFingerConvertible bond issue
5/18AmendedFingerBond with warrants issue
5/18AmendedTHE CodiConvertible bond issue

M&A & spin-offs 7

5/18Huons GlobalMerger
5/18HuonsMerger
5/18DeviceMerger
5/18AmendedXperixMerger
5/18GgumbiMerger
5/18XperixMerger
5/18MonitorappMerger

Exchange actions 15

5/18HuonsTrading halt
5/18InkredibleBuzzTrading halt
5/18EutilexTrading halt
5/18HuonsTrading halt
5/18WizitCapital reduction
5/18KmpharmaceuticalTrading halt
5/18PonyLinkTrading halt
5/18Korea Cable T.v Chung-Buk SystemExchange
5/18Sg&gTrading halt
5/18Poongjeon PharmacyTrading halt
5/18ArootCapital reduction
5/18Essen TechTrading halt
5/18SangboTrading halt
5/18CelestraExchange
5/18Trinity AirwaysUnfaithful disclosure