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Key filings, December 17, 2025

445 filings · 7 highlights
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Supply contracts 34

12/17SyntekaBioWorth 328.4% of last year's revenue, over about 12 months.₩397M
12/17meerecompanyIncorporatedWorth 69% of last year's revenue, over about 12 months.₩46.4B
12/17AmendedDasan DMCWorth 53.4% of last year's revenue, over about 21 months.₩2.6B
12/17AmendedSK DiscoveryWorth 47.3% of last year's revenue, over about 24 months.₩82B
12/17Wonik HoldingsWorth 45.9% of last year's revenue, over about 28 months.₩296B
12/17CuriosisWorth 44.4% of last year's revenue, over about 3 months.₩2.1B
12/17AmendedSamho DevelopmentWorth 40.4% of last year's revenue, over about 71 months.₩147B
12/17AmendedWoowon DevelopmentWorth 37.4% of last year's revenue, over about 63 months.₩65.2B
12/17AmendedCamus Engineering & ConstructionWorth 35.4% of last year's revenue, over about 20 months.₩98.6B
12/17AmendedDRB IndustrialWorth 35.1% of last year's revenue, over about 60 months.₩137B
12/17AmendedLG Energy SolutionWorth 28.5% of last year's revenue, over about 72 months.₩9.60T
12/17DypnfWorth 20.8% of last year's revenue, over about 54 months.₩58.4B
12/17CatisWorth 17.2% of last year's revenue, over about 94 months.₩5.4B
12/17HJ Shipbuilding & ConstructionWorth 16.6% of last year's revenue, over about 46 months.₩313B
12/17AmendedDongshinEngineering&ConstructionWorth 16.5% of last year's revenue, over about 32 months.₩8.3B
12/17AmendedCyberOneWorth 15.1% of last year's revenue, over about 36 months.₩3.4B
12/17AmendedSamho DevelopmentWorth 14.2% of last year's revenue, over about 66 months.₩51.9B
12/17AmendedDaesung Microbiological Labs.Worth 10.9% of last year's revenue, over about 46 months.₩2.8B
12/17Total Soft BankWorth 10.4% of last year's revenue, over about 20 months.₩2.2B
12/17Hancom LifecareWorth 10.4% of last year's revenue, over about 24 months.₩11B
12/17AmendedHD HyundaiWorth 9.5% of last year's revenue, over about 72 months.₩372B
12/17AmendedHD Korea Shipbuilding & Offshore EngineeringWorth 9.5% of last year's revenue, over about 72 months.₩372B
12/17AmendedIvisionworksWorth 9.4% of last year's revenue, over about 18 months.₩2.2B
12/17Hanwha SystemsWorth 7.2% of last year's revenue, over about 54 months.₩201B
12/17AmendedKUMHO Engineering & ConstructionWorth 6.2% of last year's revenue, over about 69 months.₩127B
12/17AmendedSeondo ElectricWorth 5.4% of last year's revenue, over about 18 months.₩2.3B
12/17AmendedKolonWorth 4.7% of last year's revenue, over about 48 months.₩123B
12/17AmendedKolonGlobalWorth 4.7% of last year's revenue, over about 48 months.₩123B
12/17Hyundai Engineering & ConstructionWorth 4.6% of last year's revenue.₩1.50T
12/17KolonWorth 3.7% of last year's revenue, over about 36 months.₩109B
12/17KolonGlobalWorth 3.7% of last year's revenue, over about 36 months.₩109B
12/17Keyang Electric MachinerySingle sales/supply contract
12/17LG Energy SolutionSupply contract terminated
12/17Doosan EnerbilitySingle sales/supply contract

Insider trades 71

12/17EyeGeneInsider ownership report
12/17EyeGeneInsider ownership report
12/17EyeGeneInsider ownership report
12/17KolonInsider ownership report
12/17KolonInsider ownership report
12/17SP SystemsInsider ownership report
12/17Eugene Special Purpose Acquisition 12 CompanyInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17CelltrionInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17TomatosystemInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17GraphyInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17H&SHigh TechInsider ownership report
12/17Keum Kang SteelInsider ownership report
12/17Maeil HoldingsInsider ownership report
12/17WebzenInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17BluemtecInsider ownership report
12/17People & TechnologyInsider ownership report
12/17Narae NanotechInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17SimpacInsider ownership report
12/17Maeil HoldingsInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17People & TechnologyInsider ownership report
12/17Maeil HoldingsInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17Maeil DairiesInsider ownership report
12/17Hanwha REITInsider ownership report
12/17Koramco Life Infra ReitInsider ownership report
12/17Koramco the ONE ReitInsider ownership report
12/17E Kocref Cr-ReitInsider ownership report
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5% holders 33

12/17New 5%QuadMedicineA major holder's stake rose from 0.00% to 26.35% (new report).26.35%
12/17New 5%Eugene Special Purpose Acquisition 12 CompanyA major holder's stake rose from 0.00% to 20.57% (new report).20.57%
12/17New 5%ObzenA major holder's stake rose from 0.00% to 13.59% (conversion/exercise).13.59%
12/17New 5%Kyobo 19 Special Purpose Acquisition CompanyA major holder's stake rose from 0.00% to 12.47%.12.47%
12/17New 5%FescaroA major holder's stake rose from 0.00% to 6.54% (open-market sale).6.54%
12/17New 5%Nara Space TechnologyA major holder's stake rose from 0.00% to 5.80%.5.80%
12/17Below 5%Exion Group CompanyA major holder's stake fell from 14.03% to 0.00% (conversion/exercise).0.00%
12/17EcoGlowA major holder's stake fell from 29.36% to 23.19% (pledge).23.19%
12/17Below 5%MobiisA major holder's stake fell from 5.54% to 0.00%.0.00%
12/17VitzroSys.A major holder's stake fell from 19.09% to 15.66%.15.66%
12/17Below 5%InnotechA major holder's stake fell from 5.61% to 2.23%.2.23%
12/17Below 5%NousboA major holder's stake fell from 6.02% to 4.38% (conversion/exercise).4.38%
12/17SM Life Design GroupA major holder's stake rose from 8.19% to 9.72%.9.72%
12/17Asia HoldingsA major holder's stake fell from 11.81% to 10.61%.10.61%
12/17iNtRON BiotechnologyA major holder's stake rose from 15.67% to 16.86% (related-party change).16.86%
12/17KBI Dong Yang Steel PipeA major holder's stake rose from 25.77% to 26.96% (rights offering).26.96%
12/17GriteeA major holder's stake rose from 36.00% to 37.07% (open-market buy).37.07%
12/17KolonA major holder's stake fell from 53.52% to 52.60% (conversion/exercise).52.60%
12/17ARIBIO HoldingsA major holder's stake fell from 10.32% to 9.40% (pledge).9.40%
12/17Keum Kang SteelA major holder's stake fell from 53.23% to 52.33% (gift).52.33%
12/17Saeronautomotive CorporrationA major holder's stake fell from 17.58% to 16.70%.16.70%
12/17Victory ContentsA major holder's stake fell from 15.04% to 14.63% (off-market sale).14.63%
12/17HanwhaA major holder's stake rose from 56.59% to 56.73% (related-party change).56.73%
12/17eSANGNetworksA major holder's stake rose from 14.10% to 14.24%.14.24%
12/17EyeGeneA major holder's stake rose from 28.94% to 29.05% (rights offering).29.05%
12/17SuheungA major holder's stake rose from 52.77% to 52.83% (related-party change).52.83%
12/17JS LinkA major holder's stake rose from 29.36% to 29.40% (open-market buy).29.40%
12/17EcocabA major holder's stake rose from 32.11% to 32.11% (pledge).32.11%
12/17IS DongseoA major holder's stake rose from 55.90% to 55.90%.55.90%
12/17SyntekaBioA major holder's stake rose from 21.66% to 21.66% (pledge).21.66%
12/17KoreaInformation&CommunicationA major holder's stake rose from 82.99% to 82.99% (pledge).82.99%
12/17CR HoldingsA major holder's stake rose from 70.89% to 70.89% (pledge).70.89%
12/17Sewoo Global Co,Report of 5%+ holding

Buybacks 14

12/17DisposalLS Eco EnergyPlans to dispose of 297,303 sh of treasury stock, Jan 16 to Feb 13.₩10.7B
12/17DisposalSimpacPlans to dispose of 1,680,000 sh of treasury stock, Dec 18 to Dec 31.₩9.2B
12/17AmendedDisposalCell Bio Human TechPlans to dispose of 619,835 sh of treasury stock, Dec 22 to Dec 22.₩6B
12/17CancellationNamugaCancels 300,558 sh, 2.10% of shares issued, on Dec 24.300,558 sh
12/17TrustNamugaEnded a share buyback trust contract.₩5B
12/17CancellationSandollCancels 415,145 sh, 2.74% of shares issued, on Jan 15.415,145 sh
12/17AmendedCancellationSe Gyung Hi TechCancels 0 sh, 0.00% of shares issued, on Dec 23.0 sh
12/17DisposalHCTPlans to dispose of 324,426 sh of treasury stock, Dec 30 to Dec 31.₩1.9B
12/17DisposalBeautyskinPlans to dispose of 122,727 sh of treasury stock, Dec 26 to Dec 26.₩1.7B
12/17TrustPlumb FastSigned a ₩1B trust contract to buy back shares.₩1B
12/17DisposalMotonicPlans to dispose of 5,470 sh of treasury stock, Dec 18 to Dec 24.₩62.6M
12/17DisposalHaatzPlans to dispose of 10,008 sh of treasury stock, Dec 17 to Dec 23.₩45M
12/17DisposalKT SkylifePlans to dispose of 275 sh of treasury stock, Dec 18 to Dec 31.₩1.5M
12/17Hana MaterialsBuyback trust contract

Share issues & bonds 35

12/17AmendedCBVivienConversion price ₩653; if all converted, equal to 33.9% of shares outstanding.₩10B
12/17AmendedDAPRights offering
12/17AmendedTOP RUN Total SolutionRights offering
12/17Dawon CableRights offering
12/17Dawon CableCapital reduction
12/17Dawon CableRights offering
12/17SKCapital reduction
12/17AmendedHankook Tire & TechnologyRights offering
12/17AmendedRN2 TechnologiesRights offering
12/17AmendedEBCell Bio Human TechExchange price ₩9,680; if all exchanged, equal to 6.2% of shares outstanding.₩6B
12/17BeautyskinExchangeable bond issue
12/17BeautyskinConvertible bond issue
12/17Lightron Fiber-Optic DevicesConvertible bond issue
12/17AmendedARIBIO HoldingsConvertible bond issue
12/17AmendedAlpha AIConvertible bond issue
12/17AmendedAdbiotechRights offering
12/17AmendedDaeho ALConvertible bond issue
12/17NKGen Biotech KoreaRights offering
12/17AmendedMsdiRights offering
12/17AmendedInkredibleBuzzRights offering
12/17AmendedBeno TNRConvertible bond issue
12/17FoodnamooRights offering
12/17FoodnamooRights offering
12/17AmendedRobotisConvertible bond issue
12/17AmendedSKAI worldwideRights offering
12/17AmendedHanon SystemsRights offering
12/17CommaxRights offering
12/17CrowdWorksRights offering
12/17CrowdWorksRights offering
12/17CrowdWorksRights offering
12/17MedipostConvertible bond issue
12/17MedipostConvertible bond issue
12/17AmendedItoxiRights offering
12/17MedipostConvertible bond issue
12/17AmendedItoxiRights offering

M&A & spin-offs 8

12/17AmendedSKCMerger
12/17AmendedHanWool & JejuTangible asset deal
12/17BeautyskinStake acquisition/disposal
12/17AmendedLskairobotStake acquisition/disposal
12/17AmendedSKCMerger
12/17AmendedObzenMerger
12/17SK eternixTangible asset deal
12/17AmendedSaraminMerger

Exchange actions 3

12/17ARIBIO HoldingsUnfaithful disclosure
12/17IremUnfaithful disclosure
12/17Enzychem LifesciencesExchange inquiry