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Key filings, April 20, 2026

429 filings · 8 highlights
← April 17, 2026April 21, 2026 →

Supply contracts 13

4/20KosesWorth 60.8% of last year's revenue, over about 7 months.₩50.1B
4/20Qualitas SemiconductorWorth 33.9% of last year's revenue, over about 16 months.₩1.8B
4/20AmendedNamkwang Engineering & ConstructionWorth 33.2% of last year's revenue, over about 106 months.₩101B
4/20KNSWorth 26.1% of last year's revenue, over about 12 months.₩10.8B
4/20AmendedJeioWorth 18.3% of last year's revenue, over about 11 months.₩10.1B
4/20Viatron TechnologiesWorth 18.1% of last year's revenue, over about 3 months.₩11.8B
4/20ENCellWorth 11.4% of last year's revenue, over about 15 months.₩600M
4/20AmendedSamsung C&TWorth 9.2% of last year's revenue.₩2.77T
4/20Dong-A PharmaceuticalWorth 7.3% of last year's revenue, over about 5 months.₩7.5B
4/20AmendedSamho DevelopmentWorth 6.3% of last year's revenue, over about 16 months.₩25.1B
4/20Hanwha SystemsWorth 2.5% of last year's revenue, over about 31 months.₩92B
4/20AmendedS-OilWorth 2.5% of last year's revenue, over about 12 months.₩917B
4/20YASSingle sales/supply contract

Preliminary earnings 6

4/20Swung to profitJooyontechOperating profit: swung to profit (-₩344M → ₩415M). Revenue ₩17.1B, up 7.6% YoY.₩415M
4/20ProtiaOperating profit ₩759M, up 84.2% YoY. Revenue ₩3.8B, up 41.8% YoY.₩759M
4/20Kukdo ChemicalOperating profit ₩10.3B, down 20.2% YoY. Revenue ₩414B, up 29.7% YoY.₩10.3B
4/20HD Korea Shipbuilding & Offshore EngineeringPreliminary operating results
4/20HD Korea Shipbuilding & Offshore EngineeringPreliminary operating results
4/20HD Hyundai Heavy IndustriesPreliminary operating results

Insider trades 91

4/20AmendedSeojin SystemInsider ownership report
4/20HK inno.NInsider ownership report
4/20THE Nature HoldingsInsider ownership report
4/20Doosan EnerbilityInsider ownership report
4/20Ji-TechInsider ownership report
4/20MIRAE ASSET Life InsuranceInsider ownership report
4/20Medy-ToxInsider ownership report
4/20M eighty-threeInsider ownership report
4/20Nice Information & TelecommunicationInsider ownership report
4/20Angel RoboticsInsider ownership report
4/20T&R BiofabInsider ownership report
4/20T&R BiofabInsider ownership report
4/20T&R BiofabInsider ownership report
4/20T&R BiofabInsider ownership report
4/20T&R BiofabInsider ownership report
4/20T&R BiofabInsider ownership report
4/20IctkInsider ownership report
4/20T&R BiofabInsider ownership report
4/20IctkInsider ownership report
4/20T&R BiofabInsider ownership report
4/20SuNAMInsider ownership report
4/20ClobotInsider ownership report
4/20T&R BiofabInsider ownership report
4/20CS WindInsider ownership report
4/20KorchipInsider ownership report
4/20ClobotInsider ownership report
4/20GriteeInsider ownership report
4/20ClobotInsider ownership report
4/20CS WindInsider ownership report
4/20ClobotInsider ownership report
4/20ClobotInsider ownership report
4/20KorchipInsider ownership report
4/20CS WindInsider ownership report
4/20ClobotInsider ownership report
4/20SSRInsider ownership report
4/20AutechInsider ownership report
4/20CS WindInsider ownership report
4/20Miwon ChemicalsInsider ownership report
4/20MIRAE ASSET Life InsuranceInsider ownership report
4/20AutechInsider ownership report
All insider trades →

5% holders 50

4/20New 5%MsdiA major holder's stake rose from 0.00% to 12.24%.12.24%
4/20Below 5%HanWool & JejuA major holder's stake fell from 22.05% to 0.00% (conversion/exercise).0.00%
4/20New 5%GenohA major holder's stake rose from 0.00% to 5.08%.5.08%
4/20Below 5%TS TrillionA major holder's stake fell from 9.80% to 2.18%.2.18%
4/20Seojin SystemA major holder's stake fell from 36.12% to 28.66% (share lending).28.66%
4/20Jaeyoung SolutecA major holder's stake fell from 18.13% to 14.26% (share lending).14.26%
4/20DYDA major holder's stake fell from 7.82% to 6.21% (open-market sale).6.21%
4/20SuNAMA major holder's stake fell from 9.89% to 8.35% (open-market sale).8.35%
4/20Seah HoldingsA major holder's stake rose from 74.83% to 76.08% (pledge).76.08%
4/20AutechA major holder's stake rose from 33.04% to 34.29% (open-market buy).34.29%
4/20SewonA major holder's stake rose from 5.28% to 6.51%.6.51%
4/20EverybotA major holder's stake fell from 34.19% to 33.04% (conversion/exercise).33.04%
4/20Sungmoon ElectronicsA major holder's stake fell from 24.59% to 23.45%.23.45%
4/20Iljin DisplayA major holder's stake rose from 51.76% to 52.44% (conversion/exercise).52.44%
4/20SSRA major holder's stake rose from 47.74% to 48.32% (open-market buy).48.32%
4/20Shinsung E&GA major holder's stake fell from 5.84% to 5.33%.5.33%
4/20Daegu Department StoreA major holder's stake rose from 32.26% to 32.64% (pledge).32.64%
4/20SenkoA major holder's stake rose from 37.56% to 37.83% (related-party change).37.83%
4/20SolumA major holder's stake rose from 32.57% to 32.65%.32.65%
4/20KolmarBNHA major holder's stake rose from 53.61% to 53.65% (open-market buy).53.65%
4/20GemVax & KAELA major holder's stake fell from 25.88% to 25.86% (open-market sale).25.86%
4/20Miwon ChemicalsA major holder's stake fell from 55.63% to 55.61% (related-party change).55.61%
4/20KG Eco SolutionA major holder's stake rose from 48.99% to 49.00%.49.00%
4/20CS WindA major holder's stake fell from 38.97% to 38.96% (pledge).38.96%
4/20MegaStudyEduA major holder's stake rose from 40.91% to 40.92% (open-market buy).40.92%
4/20Kolmar KoreaA major holder's stake rose from 26.56% to 26.56% (related-party change).26.56%
4/20M2nA major holder's stake rose from 37.65% to 37.65% (share lending).37.65%
4/20HanWool & JejuReport of 5%+ holding
4/20Ji-TechA major holder's stake rose from 56.91% to 56.91% (gift).56.91%
4/20GI InnovationA major holder's stake rose from 6.63% to 6.63% (pledge).6.63%
4/20SmecA major holder's stake rose from 12.40% to 12.40% (pledge).12.40%
4/20KginicisA major holder's stake rose from 41.56% to 41.56% (pledge).41.56%
4/20Enzychem LifesciencesA major holder's stake rose from 20.25% to 20.25% (pledge).20.25%
4/20AtonA major holder's stake rose from 31.16% to 31.16% (share lending).31.16%
4/20KukjeonA major holder's stake rose from 52.23% to 52.23% (related-party change).52.23%
4/20WemadeA major holder's stake rose from 39.51% to 39.51% (pledge).39.51%
4/20SY Steel TechA major holder's stake rose from 42.90% to 42.90% (pledge).42.90%
4/20WISE iTechA major holder's stake rose from 34.78% to 34.78%.34.78%
4/20Sungho ElectronicsA major holder's stake rose from 64.38% to 64.38%.64.38%
4/20GC MediAIA major holder's stake rose from 53.02% to 53.02% (pledge).53.02%
All 5% holders →

Buybacks 8

4/20DisposalMonitorappPlans to dispose of 247,000 sh of treasury stock, Apr 21 to Apr 21.₩1.1B
4/20TrustCellromax ScienceSigned a ₩1B trust contract to buy back shares.₩1B
4/20DisposalShinhungPlans to dispose of 2,776 sh of treasury stock, Apr 22 to Apr 30.₩39.1M
4/20Pentastone ElectronicsShare cancellation
4/20Daelim BathShare cancellation
4/20KraftonShare cancellation
4/20AmendedHana Financial GroupShare cancellation
4/20AmendedHydro LithiumTreasury stock disposal

Share issues & bonds 15

4/20AmendedCBRootKConversion price ₩1,390; if all converted, equal to 3.3% of shares outstanding.₩1.5B
4/20AmendedEone Diagnomics Genome CenterRights offering
4/20AmendedEone Diagnomics Genome CenterCapital reduction
4/20AmendedEone Diagnomics Genome CenterRights offering
4/20FNC EntertainmentConvertible bond issue
4/20AmendedBucket StudioRights offering
4/20AmendedDaejin Advanced MaterialsConvertible bond issue
4/20AmendedGeneOne Life ScienceConvertible bond issue
4/20AmendedPeopleBioRights offering
4/20AmendedVictory ContentsConvertible bond issue
4/20AmendedParatech CompanyConvertible bond issue
4/20AmendedVictory ContentsConvertible bond issue
4/20AmendedVictory ContentsConvertible bond issue
4/20AmendedLunitBonus issue
4/20AmendedAtumRights offering

M&A & spin-offs 4

4/20PNC TechnologiesA ₩12.3B deal, equal to 15% of total assets.₩12.3B
4/20Moda-InnoChipsMerger
4/20Moda-InnoChipsMerger
4/20AmendedPNC TechnologiesStake acquisition/disposal

Exchange actions 10

4/20MobiisUnfaithful disclosure
4/20DawonsysExchange
4/20DawonsysTrading halt
4/20SAM Chun Dang PharmUnfaithful disclosure
4/20DawonsysUnfaithful disclosure
4/20DHX CompanyExchange
4/20HyperUnfaithful disclosure
4/20DHX CompanyTrading halt
4/20Union Korea PharmExchange
4/20Poongjeon PharmacySpin-off / split