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Key filings, April 22, 2026

453 filings · 12 highlights
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Supply contracts 19

4/22AmendedKorea Electronic Power Industrial DevelopmentWorth 75.5% of last year's revenue, over about 117 months.₩298B
4/22IsteWorth 72.9% of last year's revenue, over about 18 months.₩23.5B
4/22ICDWorth 21% of last year's revenue, over about 9 months.₩41.3B
4/22Green OpticsWorth 19.7% of last year's revenue, over about 28 months.₩8.2B
4/22Namkwang Engineering & ConstructionWorth 19.1% of last year's revenue, over about 36 months.₩68.2B
4/22InnospaceWorth 17.7% of last year's revenue, over about 32 months.₩485.4M
4/22HyosungWorth 15.6% of last year's revenue, over about 24 months.₩72M
4/22AmendedYujin RobotWorth 13.4% of last year's revenue, over about 7 months.₩3.5B
4/22AmendedDongsung PharmaceuticalWorth 13.4% of last year's revenue, over about 48 months.₩12.5B
4/22AstaWorth 11.9% of last year's revenue, over about 4 months.₩400.9M
4/22MOTWorth 10.6% of last year's revenue, over about 7 months.₩8B
4/22AmendedSamsung C&TWorth 9.5% of last year's revenue, over about 58 months.₩2.88T
4/22Amended4by4Worth 5.4% of last year's revenue, over about 4 months.₩1.8B
4/22HD Korea Shipbuilding & Offshore EngineeringWorth 3.6% of last year's revenue, over about 54 months.₩627B
4/22HD Hyundai Heavy IndustriesWorth 3.6% of last year's revenue, over about 54 months.₩627B
4/22HJ Shipbuilding & ConstructionWorth 3.4% of last year's revenue, over about 36 months.₩68.2B
4/22AmendedLIG Defense&AerospaceWorth 3.3% of last year's revenue, over about 43 months.₩140B
4/22HD Korea Shipbuilding & Offshore EngineeringWorth 2.9% of last year's revenue, over about 40 months.₩515B
4/22HD Hyundai Heavy IndustriesWorth 2.9% of last year's revenue, over about 40 months.₩515B

Preliminary earnings 5

4/22OCI CompanyOperating profit ₩27.8B, up 171.4% YoY. Revenue ₩507B, down 6% YoY.₩27.8B
4/22Essen TechOperating profit ₩823M, up 53.8% YoY. Revenue ₩16.3B, up 17% YoY.₩823M
4/22Samsung BiologicsOperating profit ₩581B, up 35% YoY. Revenue ₩1.26T, up 25.8% YoY.₩581B
4/22Jeju BankOperating profit ₩947M, down 25.3% YoY. Revenue ₩94.6B, up 3.8% YoY.₩947M
4/22UnidOperating profit ₩25.5B, down 11% YoY. Revenue ₩384B, up 19.2% YoY.₩25.5B

Insider trades 61

4/22Kolmar KoreaInsider ownership report
4/22KodiInsider ownership report
4/22Sejong TelecomInsider ownership report
4/22SolumInsider ownership report
4/22Kwang Myung ElectricInsider ownership report
4/22LG Energy SolutionInsider ownership report
4/22Yuanta Securities KoreaInsider ownership report
4/22NongshimInsider ownership report
4/22DB HiTekInsider ownership report
4/22SmecInsider ownership report
4/22SmecInsider ownership report
4/22DB HiTekInsider ownership report
4/22Hanwha REITInsider ownership report
4/22Koramco Life Infra ReitInsider ownership report
4/22Koramco the ONE ReitInsider ownership report
4/22IGIS Value Plus REITInsider ownership report
4/22E Kocref Cr-ReitInsider ownership report
4/22Shinhan Alpha REIT Co,.Insider ownership report
4/22Shinhan Seobu T&D REITInsider ownership report
4/22SamsungFN REITInsider ownership report
4/22Miraeasset Maps REIT 1Insider ownership report
4/22Lotte ReitInsider ownership report
4/22D&D Platform REITInsider ownership report
4/22SK ReitInsider ownership report
4/22ESR Kendall Square REITInsider ownership report
4/22Kwang Myung ElectricInsider ownership report
4/22VISSEM ElectronicsInsider ownership report
4/22JeioInsider ownership report
4/22MecaroInsider ownership report
4/22Hanwha Life InsuranceInsider ownership report
4/22JeioInsider ownership report
4/22Kanaph TherapeuticsInsider ownership report
4/22Kanaph TherapeuticsInsider ownership report
4/22JeioInsider ownership report
4/22VISSEM ElectronicsInsider ownership report
4/22AmendedChasysInsider ownership report
4/22Hanatour ServiceInsider ownership report
4/22Kanaph TherapeuticsInsider ownership report
4/22Silicon 2Insider ownership report
4/22Kanaph TherapeuticsInsider ownership report
All insider trades →

5% holders 43

4/22New 5%BillionsA major holder's stake rose from 0.00% to 38.19% (new report).38.19%
4/22New 5%FingerA major holder's stake rose from 0.00% to 33.21% (new report).33.21%
4/22AmendedNew 5%Kwang Myung ElectricA major holder's stake rose from 0.00% to 32.00% (off-market buy).32.00%
4/22Below 5%BillionsA major holder's stake fell from 35.78% to 2.57% (conversion/exercise).2.57%
4/22Kwang Myung ElectricA major holder's stake rose from 7.84% to 31.50%.31.50%
4/22Kwang Myung ElectricA major holder's stake fell from 32.00% to 8.34% (off-market sale).8.34%
4/22New 5%Choolip & SciencesA major holder's stake rose from 0.00% to 7.98% (rights offering).7.98%
4/22New 5%S.BiomedicsA major holder's stake rose from 0.00% to 6.85%.6.85%
4/22RftechA major holder's stake rose from 33.65% to 39.95% (related-party change).39.95%
4/22Below 5%Eone Diagnomics Genome CenterA major holder's stake fell from 7.43% to 1.44% (conversion/exercise).1.44%
4/22Below 5%MercuryA major holder's stake fell from 7.77% to 1.83%.1.83%
4/22NanoSilikhan Advanced MaterialsA major holder's stake fell from 21.62% to 17.14% (conversion/exercise).17.14%
4/22Micube SolutionA major holder's stake fell from 69.86% to 66.40% (stock option).66.40%
4/22Seojin SystemA major holder's stake fell from 13.80% to 10.47%.10.47%
4/22Below 5%PIM KoreaA major holder's stake fell from 5.01% to 1.95%.1.95%
4/22KoreaAlcoholIndustrialA major holder's stake rose from 5.10% to 7.79%.7.79%
4/22Dream SecurityA major holder's stake fell from 43.32% to 40.69% (conversion/exercise).40.69%
4/22Below 5%IMTA major holder's stake fell from 6.58% to 4.81% (open-market sale).4.81%
4/22Below 5%d'Alba GlobalA major holder's stake fell from 6.37% to 4.67%.4.67%
4/22Namyang Dairy ProductsA major holder's stake fell from 63.16% to 61.97% (open-market sale).61.97%
4/22CelltrionA major holder's stake rose from 31.79% to 32.85% (share lending).32.85%
4/22MecaroA major holder's stake fell from 54.28% to 53.23% (open-market sale).53.23%
4/22NKGen Biotech KoreaA major holder's stake fell from 65.01% to 64.14% (pledge).64.14%
4/22DaedongGearA major holder's stake fell from 52.09% to 51.34% (related-party change).51.34%
4/22DITA major holder's stake fell from 39.25% to 38.59% (related-party change).38.59%
4/22Sejong TelecomA major holder's stake rose from 68.40% to 68.90%.68.90%
4/22RingNetA major holder's stake fell from 30.79% to 30.55% (open-market sale).30.55%
4/22HK inno.NA major holder's stake rose from 43.04% to 43.14% (related-party change).43.14%
4/22HanjinkalA major holder's stake rose from 31.08% to 31.14% (related-party change).31.14%
4/22Nice Information & TelecommunicationA major holder's stake fell from 44.13% to 44.10% (related-party change).44.10%
4/22SolumA major holder's stake rose from 32.65% to 32.67%.32.67%
4/22CaregenA major holder's stake rose from 64.43% to 64.44%.64.44%
4/22CoAsiaA major holder's stake rose from 19.58% to 19.58% (pledge).19.58%
4/22Hyundai HymsA major holder's stake rose from 35.65% to 35.65%.35.65%
4/22SmecA major holder's stake rose from 21.26% to 21.26% (related-party change).21.26%
4/22Kwang Myung ElectricReport of 5%+ holding
4/22SangboA major holder's stake rose from 16.99% to 16.99% (pledge).16.99%
4/22YASA major holder's stake rose from 46.59% to 46.59% (pledge).46.59%
4/22Fine TechnixReport of 5%+ holding
4/22IquestA major holder's stake rose from 40.57% to 40.57% (stock option).40.57%
All 5% holders →

Buybacks 11

4/22BuybackCelltrionPlans to buy back 492,611 sh of treasury stock, Apr 23 to Jul 22.₩100B
4/22DisposalSK hynixPlans to dispose of 12,536 sh of treasury stock, Apr 23 to May 22.₩15.3B
4/22DisposalMyungmoon PharmPlans to dispose of 525,123 sh of treasury stock, Apr 27 to Apr 29.₩935.8M
4/22BuybackKorea Computer & SystemsPlans to buy back 35,000 sh of treasury stock, Apr 23 to Jul 22.₩759.5M
4/22AmendedPolaris AIShare cancellation
4/22AmendedPolaris UNOShare cancellation
4/22Dongjin SemichemShare cancellation
4/22SK SquareTreasury stock disposal
4/22KCCShare cancellation
4/22Amendedd'Alba GlobalBuyback trust contract
4/22d'Alba GlobalBuyback trust contract

Share issues & bonds 28

4/22AmendedRights offeringDongsung PharmaceuticalIssuing 70,000,000 sh of new shares, equal to 263% of existing shares.₩70B
4/22Capital reductionTway Holdings InCapital reduction of 80%.80%
4/22CBInsanConversion price ₩1,185; if all converted, equal to 19.5% of shares outstanding.₩11B
4/22CBChai CommunicationConversion price ₩4,105; if all converted, equal to 17.9% of shares outstanding.₩10B
4/22CBTaewoong LogisticsConversion price ₩2,774; if all converted, equal to 12.3% of shares outstanding.₩15B
4/22Rights offeringSeojin SystemIssuing 4,026,846 sh of new shares, equal to 6.8% of existing shares.₩180B
4/22AmendedRights offeringCellbionIssuing 762,859 sh of new shares, equal to 5.9% of existing shares.₩25B
4/22AmendedCBCellbionConversion price ₩36,048; if all converted, equal to 5.1% of shares outstanding.₩25B
4/22CBSphereConversion price ₩44,929; if all converted, equal to 1.6% of shares outstanding.₩37.5B
4/22CBHydro LithiumConversion price ₩2,245; if all converted, equal to 0.2% of shares outstanding.₩250M
4/22CBCurexoConversion price ₩16,039; if all converted, equal to 0.1% of shares outstanding.₩500M
4/22WitsCapital reduction
4/22AmendedNCRights offering
4/22DaedongBonus issue
4/22AmendedCelemicsRights offering
4/22AmendedQuantumRailRights offering
4/22CuroholdingsRights offering
4/22AmendedSI ResourcesRights offering
4/22FingerRights offering
4/22AmendedMoadataConvertible bond issue
4/22AmendedGreat Rich TechnologiesRights offering
4/22AmendedRF MaterialsRights offering
4/22AmendedGreat Rich TechnologiesRights offering
4/22DaedongGearBonus issue
4/22SensorviewRights offering
4/22AmendedD&D PharmatechConvertible bond issue
4/22FingerConvertible bond issue
4/22FingerBond with warrants issue

M&A & spin-offs 8

4/22Iron DeviceA ₩14B deal, equal to 41% of total assets.₩14B
4/22AmendedNamu AXMerger
4/22Huons GlobalMerger
4/22AmendedKyobo 16 Special Purpose Acquisition CompanyMerger
4/22HuonsMerger
4/22BCnCMerger
4/22SGA SolutionsMerger
4/22AmendedKG DongbusteelStake acquisition/disposal

Exchange actions 17

4/22InkredibleBuzzUnfaithful disclosure
4/22InitechUnfaithful disclosure
4/22CSSpin-off / split
4/22PonyLinkSpin-off / split
4/22Finger StorySpin-off / split
4/22Essen TechSpin-off / split
4/22Kyobo 16 Special Purpose Acquisition CompanyMerger
4/22Hanjoo ARTCapital reduction
4/22BellockExchange inquiry
4/22ArootSpin-off / split
4/22SBI Investment KOREASpin-off / split
4/22SangboSpin-off / split
4/22DaedongGearBonus issue
4/22InnotenaSpin-off / split
4/22FinetekExchange inquiry
4/22Kwang Myung ElectricExchange
4/22Tway Holdings InTrading halt