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Key filings, December 18, 2025

400 filings · 11 highlights
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Supply contracts 25

12/18NatureandEnvironmentWorth 153.8% of last year's revenue, over about 27 months.₩62.7B
12/18AmendedBHIWorth 40.4% of last year's revenue, over about 17 months.₩148B
12/18AmendedWoowon DevelopmentWorth 39.5% of last year's revenue, over about 85 months.₩115B
12/18AmendedLIG Defense&AerospaceWorth 38.6% of last year's revenue, over about 36 months.₩857B
12/18Green ResourceWorth 24.3% of last year's revenue, over about 3 months.₩4.5B
12/18Korea Aerospace IndustriesWorth 18.8% of last year's revenue, over about 36 months.₩684B
12/18AmendedNatureandEnvironmentWorth 18.6% of last year's revenue, over about 52 months.₩5.4B
12/18AmendedNamkwang Engineering & ConstructionWorth 18.3% of last year's revenue, over about 64 months.₩43.3B
12/18SeohanWorth 17.9% of last year's revenue, over about 48 months.₩134B
12/18NRBWorth 17.7% of last year's revenue, over about 10 months.₩9.3B
12/18AmendedHanWool SemiconductorWorth 15.7% of last year's revenue, over about 23 months.₩3.2B
12/18AmendedFaduWorth 15.6% of last year's revenue, over about 6 months.₩6.8B
12/18AmendedNamkwang Engineering & ConstructionWorth 12.9% of last year's revenue, over about 63 months.₩46B
12/18WavusWorth 12.7% of last year's revenue, over about 36 months.₩7.1B
12/18AmendedSD systemWorth 11.4% of last year's revenue, over about 7 months.₩2.1B
12/18DaishinInformationWorth 8.8% of last year's revenue, over about 36 months.₩17.9B
12/18VAIV companyWorth 7.5% of last year's revenue, over about 12 months.₩1.6B
12/18AmendedKye-Ryong Construction IndustrialWorth 6.5% of last year's revenue, over about 63 months.₩194B
12/18AmendedTY HoldingsWorth 4.8% of last year's revenue, over about 79 months.₩110B
12/18AmendedTaeyoung Engineering & ConstructionWorth 4.8% of last year's revenue, over about 79 months.₩110B
12/18AmendedHanshin ConstructionWorth 3.4% of last year's revenue, over about 74 months.₩41.3B
12/18AmendedLIG Defense&AerospaceWorth 3.2% of last year's revenue, over about 49 months.₩71.8B
12/18DL HoldingsWorth 3% of last year's revenue.₩253B
12/18DL E&CWorth 3% of last year's revenue.₩253B
12/18AmendedNamkwang Engineering & ConstructionSingle sales/supply contract

Insider trades 52

12/18Cnt85Insider ownership report
12/18Y-BiologicsInsider ownership report
12/18Y-BiologicsInsider ownership report
12/18Y-BiologicsInsider ownership report
12/18Y-BiologicsInsider ownership report
12/18Hydro LithiumInsider ownership report
12/18Samsung Electronics Co,Insider ownership report
12/18MIRAE ASSET Life InsuranceInsider ownership report
12/18AJ NetworksInsider ownership report
12/18FaduInsider ownership report
12/18PharmGen ScienceInsider ownership report
12/18PharmGen ScienceInsider ownership report
12/18Heng Sheng Holding Group CompanyInsider ownership report
12/18H&SHigh TechInsider ownership report
12/18PharmGen ScienceInsider ownership report
12/18Castec KoreaInsider ownership report
12/18PharmGen ScienceInsider ownership report
12/18TMCInsider ownership report
12/18TMCInsider ownership report
12/18TMCInsider ownership report
12/18TMCInsider ownership report
12/18TMCInsider ownership report
12/18SoftcenInsider ownership report
12/18TMCInsider ownership report
12/18ES CubeInsider ownership report
12/18Kukdo ChemicalInsider ownership report
12/18DB HiTekInsider ownership report
12/18CS WindInsider ownership report
12/18IntopsInsider ownership report
12/18Miwon CommercialInsider ownership report
12/18InnoaxInsider ownership report
12/18THE Nature HoldingsInsider ownership report
12/18Dongkuk Steel MillInsider ownership report
12/18Dongkuk Steel MillInsider ownership report
12/18Tailim PackagingInsider ownership report
12/18Dawon CableInsider ownership report
12/18Dawon CableInsider ownership report
12/18Sigong TechInsider ownership report
12/18Macromill EmbrainInsider ownership report
12/18Macromill EmbrainInsider ownership report
All insider trades →

5% holders 38

12/18New 5%TMCA major holder's stake rose from 0.00% to 56.44%.56.44%
12/18New 5%PharmGen ScienceA major holder's stake rose from 0.00% to 20.80% (new report).20.80%
12/18New 5%Copus KoreaA major holder's stake rose from 0.00% to 18.94%.18.94%
12/18Below 5%PharmGen ScienceA major holder's stake fell from 22.52% to 0.00%.0.00%
12/18New 5%KctcA major holder's stake rose from 0.00% to 6.41% (inheritance).6.41%
12/18Heng Sheng Holding Group CompanyA major holder's stake rose from 26.51% to 38.00% (rights offering).38.00%
12/18Below 5%KctcA major holder's stake fell from 6.41% to 0.00% (inheritance).0.00%
12/18Copus KoreaA major holder's stake fell from 39.83% to 35.44%.35.44%
12/18Nara CellarA major holder's stake rose from 53.07% to 56.04% (bonus issue).56.04%
12/18Below 5%CuriosisA major holder's stake fell from 6.12% to 3.30% (open-market sale).3.30%
12/18Hannong ChemicalsA major holder's stake rose from 46.02% to 48.21% (related-party change).48.21%
12/18Below 5%ClobotA major holder's stake rose from 0.00% to 2.01% (new report).2.01%
12/18Genome&CompanyA major holder's stake fell from 8.68% to 6.81% (open-market sale).6.81%
12/18KTA major holder's stake rose from 5.12% to 6.14%.6.14%
12/18SELVAS HealthcareA major holder's stake fell from 41.13% to 40.12% (related-party change).40.12%
12/18SoftcenA major holder's stake rose from 15.99% to 16.71% (open-market buy).16.71%
12/18CS WindA major holder's stake fell from 40.53% to 39.95% (share lending).39.95%
12/18CelltrionA major holder's stake rose from 31.02% to 31.35% (share lending).31.35%
12/18HandsA major holder's stake fell from 64.00% to 63.79%.63.79%
12/18Tailim PackagingA major holder's stake rose from 68.78% to 68.94% (open-market buy).68.94%
12/18Y-BiologicsA major holder's stake rose from 30.82% to 30.92% (stock option).30.92%
12/18ChabiotechA major holder's stake fell from 29.74% to 29.65% (open-market sale).29.65%
12/18H&SHigh TechA major holder's stake rose from 27.98% to 28.05% (open-market buy).28.05%
12/18The Asia Business DailyA major holder's stake fell from 45.56% to 45.53% (related-party change).45.53%
12/18Daou TechnologyA major holder's stake fell from 47.36% to 47.34% (open-market sale).47.34%
12/18Cnt85A major holder's stake rose from 44.91% to 44.92% (related-party change).44.92%
12/18Hydro LithiumReport of 5%+ holding
12/18OrionA major holder's stake rose from 43.81% to 43.81% (related-party change).43.81%
12/18Samsung PharmaceuticalA major holder's stake rose from 10.47% to 10.47% (pledge).10.47%
12/18VoronoiA major holder's stake rose from 40.98% to 40.98% (pledge).40.98%
12/18GgumbiA major holder's stake rose from 39.00% to 39.00% (pledge).39.00%
12/18CreoSGA major holder's stake rose from 45.66% to 45.66%.45.66%
12/18CuroholdingsA major holder's stake rose from 61.73% to 61.73%.61.73%
12/18Dexter studiosA major holder's stake rose from 21.12% to 21.12% (pledge).21.12%
12/18GenorayA major holder's stake rose from 26.88% to 26.88% (pledge).26.88%
12/18EcoproA major holder's stake rose from 25.57% to 25.57% (pledge).25.57%
12/18Macromill EmbrainReport of 5%+ holding
12/18Macromill EmbrainReport of 5%+ holding

Buybacks 20

12/18DisposalKorea United PharmPlans to dispose of 954,750 sh of treasury stock, Dec 19 to Dec 19.₩19.1B
12/18DisposalDaehan SteelPlans to dispose of 1,003,661 sh of treasury stock, Dec 19 to Dec 19.₩17.7B
12/18DisposalSystems Technology IncorporatedPlans to dispose of 550,000 sh of treasury stock, Dec 19 to Jan 18.₩16B
12/18CancellationYoungpoongCancels 1,030,500 sh, 5.39% of shares issued, on Dec 26.1,030,500 sh
12/18DisposalWhanin PharmPlans to dispose of 900,000 sh of treasury stock, Dec 19 to Dec 19.₩10.4B
12/18DisposalKumkang KindPlans to dispose of 1,457,240 sh of treasury stock, Dec 19 to Dec 19.₩9.8B
12/18DisposalSBB TechPlans to dispose of 212,890 sh of treasury stock, Dec 19 to Dec 19.₩8B
12/18CancellationiNtRON BiotechnologyCancels 959,215 sh, 2.81% of shares issued, on Dec 26.959,215 sh
12/18DisposalISU ChemicalPlans to dispose of 615,833 sh of treasury stock, Dec 19 to Jan 18.₩5.6B
12/18CancellationSystems Technology IncorporatedCancels 322,953 sh, 2.04% of shares issued, on Dec 29.322,953 sh
12/18DisposalDaedongPlans to dispose of 354,992 sh of treasury stock, Dec 19 to Dec 19.₩3.5B
12/18DisposalL&C BIOPlans to dispose of 70,000 sh of treasury stock, Dec 18 to Nov 27.₩2.5B
12/18AmendedDisposalUNID btplusPlans to dispose of 698,871 sh of treasury stock, Dec 24 to Dec 24.₩2.4B
12/18DisposalDaehan SteelPlans to dispose of 100,000 sh of treasury stock, Dec 19 to Dec 19.₩1.8B
12/18TrustADforusSigned a ₩1B trust contract to buy back shares.₩1B
12/18DisposalISU ChemicalPlans to dispose of 28,000 sh of treasury stock, Dec 19 to Dec 30.₩253.7M
12/18DisposalDaelim BathPlans to dispose of 12,800 sh of treasury stock, Dec 23 to Dec 23.₩65.7M
12/18DisposalSamwha ElectronicsPlans to dispose of 1,792 sh of treasury stock, Dec 19 to Dec 19.₩5M
12/18NamsungTreasury stock disposal
12/18YoungwireTreasury stock disposal

Share issues & bonds 24

12/18Bonus issueJustem.Bonus issue of new shares equal to 195.7% of existing shares.14,211,662 sh
12/18CBOlipassConversion price ₩500; if all converted, equal to 14.7% of shares outstanding.₩600M
12/18CBKorea Arlico PharmConversion price ₩4,075; if all converted, equal to 14.7% of shares outstanding.₩10.5B
12/18Rights offeringOrum TherapeuticsIssuing 1,328,090 sh of new shares, equal to 6.3% of existing shares.₩120B
12/18CBOrbitechConversion price ₩4,179; if all converted, equal to 2.5% of shares outstanding.₩3B
12/18JB Financial GroupRights offering
12/18NamsungExchangeable bond issue
12/18AmendedAscendioConvertible bond issue
12/18Orum TherapeuticsRights offering
12/18AmendedMOA Life PlusRights offering
12/18AmendedARIBIO HoldingsConvertible bond issue
12/18AmendedAscendioConvertible bond issue
12/18AmendedAscendioConvertible bond issue
12/18AmendedCHA AI HealthkareConvertible bond issue
12/18AmendedAptnRights offering
12/18AmendedCHA AI HealthkareConvertible bond issue
12/18AmendedCHA AI HealthkareConvertible bond issue
12/18AmendedQuratisConvertible bond issue
12/18AmendedGreat Rich TechnologiesRights offering
12/18AmendedGreat Rich TechnologiesRights offering
12/18AmendedNdfosRights offering
12/18AmendedCHA AI HealthkareConvertible bond issue
12/18AmendedKS IndustryConvertible bond issue
12/18YoungwireExchangeable bond issue

M&A & spin-offs 2

12/18Osung Advanced MaterialsA ₩38.4B deal, equal to 12.9% of total assets.₩38.4B
12/18AmendedCaelumMerger

Exchange actions 7

12/18FaduTrading halt
12/18FaduExchange inquiry
12/18Gold&SCapital reduction
12/18Enzychem LifesciencesExchange inquiry
12/18Justem.Bonus issue
12/18NatureandEnvironmentTrading halt
12/18Dawon CableUnfaithful disclosure