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Key filings, March 25, 2026

621 filings · 10 highlights
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Supply contracts 23

3/25SphereWorth 1097.7% of last year's revenue, over about 4 months.₩28.1B
3/25AmendedSemyungElectricMachineryWorth 141% of last year's revenue, over about 17 months.₩16.7B
3/25AmendedSemyungElectricMachineryWorth 62.3% of last year's revenue, over about 15 months.₩7.4B
3/25AmendedMiraeWorth 37.7% of last year's revenue, over about 4 months.₩10.2B
3/25STX Engine Co,.Worth 36.5% of last year's revenue, over about 32 months.₩264B
3/25AmendedShindo Eng. Lab.Worth 31.1% of last year's revenue, over about 24 months.₩3.3B
3/25AmendedWoowon DevelopmentWorth 26.3% of last year's revenue, over about 61 months.₩51.7B
3/25AmendedOptiCoreWorth 25.8% of last year's revenue, over about 4 months.₩6B
3/25CreoSGWorth 18.6% of last year's revenue, over about 8 months.₩1.5B
3/25AmendedOptiCoreWorth 17.2% of last year's revenue, over about 4 months.₩4B
3/25WotWorth 13.8% of last year's revenue, over about 9 months.₩2.1B
3/25HD-Hyundai Marine EngineWorth 13.7% of last year's revenue, over about 29 months.₩43.2B
3/25InitechWorth 9.2% of last year's revenue, over about 12 months.₩3.6B
3/25WoojinWorth 8.1% of last year's revenue, over about 17 months.₩11.3B
3/25STX Engine Co,.Worth 7.4% of last year's revenue, over about 15 months.₩53.6B
3/25Hanwha OceanWorth 7% of last year's revenue, over about 36 months.₩756B
3/25DongbuWorth 6.7% of last year's revenue, over about 48 months.₩112B
3/25Hyundai Engineering & ConstructionWorth 6% of last year's revenue.₩1.96T
3/25AmendedYestWorth 5.5% of last year's revenue, over about 15 months.₩5.5B
3/25Hanwha OceanWorth 5.5% of last year's revenue, over about 39 months.₩589B
3/25Kye-Ryong Construction IndustrialWorth 3.5% of last year's revenue, over about 48 months.₩112B
3/25Daewoo Engineering & ConstructionWorth 2.8% of last year's revenue, over about 48 months.₩297B
3/25NanocmsSingle sales/supply contract

Insider trades 57

3/25Yuanta Securities KoreaInsider ownership report
3/25Yuanta Securities KoreaInsider ownership report
3/25KCInsider ownership report
3/25EgisInsider ownership report
3/25GitsnInsider ownership report
3/25LincsolutionInsider ownership report
3/25GitsnInsider ownership report
3/25H&SHigh TechInsider ownership report
3/25GitsnInsider ownership report
3/25GitsnInsider ownership report
3/25GitsnInsider ownership report
3/25CherrybroInsider ownership report
3/25GitsnInsider ownership report
3/25Hanwha REITInsider ownership report
3/25Koramco Life Infra ReitInsider ownership report
3/25Koramco the ONE ReitInsider ownership report
3/25IGIS Value Plus REITInsider ownership report
3/25E Kocref Cr-ReitInsider ownership report
3/25Shinhan Alpha REIT Co,.Insider ownership report
3/25Shinhan Seobu T&D REITInsider ownership report
3/25SamsungFN REITInsider ownership report
3/25Miraeasset Maps REIT 1Insider ownership report
3/25Lotte ReitInsider ownership report
3/25D&D Platform REITInsider ownership report
3/25Mirae Asset Global REITInsider ownership report
3/25SK ReitInsider ownership report
3/25ESR Kendall Square REITInsider ownership report
3/25Hana Financial GroupInsider ownership report
3/25DY PowerInsider ownership report
3/25MekicsInsider ownership report
3/25UILInsider ownership report
3/25WitsInsider ownership report
3/25Castec KoreaInsider ownership report
3/25SocarInsider ownership report
3/25WitsInsider ownership report
3/25MIRAE ASSET Life InsuranceInsider ownership report
3/25Englewood LabInsider ownership report
3/25Daewoong PharmaInsider ownership report
3/25LX InternationalInsider ownership report
3/25Lotte Tour DevelopmentInsider ownership report
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5% holders 31

3/25New 5%BillionsA major holder's stake rose from 0.00% to 35.78% (conversion/exercise).35.78%
3/25New 5%AribiolabA major holder's stake rose from 0.00% to 14.69% (new report).14.69%
3/25Englewood LabA major holder's stake rose from 55.08% to 71.75%.71.75%
3/25New 5%AribiolabA major holder's stake rose from 0.00% to 6.14% (new report).6.14%
3/25New 5%KEPCO Engineering & Construction CompanyA major holder's stake rose from 4.98% to 5.01%.5.01%
3/25InktecA major holder's stake fell from 42.40% to 32.47% (related-party change).32.47%
3/25NdfosA major holder's stake rose from 22.06% to 31.14% (rights offering).31.14%
3/25Below 5%CelemicsA major holder's stake fell from 6.48% to 0.42%.0.42%
3/25ICHA major holder's stake fell from 7.16% to 5.67%.5.67%
3/25CherrybroA major holder's stake rose from 62.53% to 63.95% (open-market sale).63.95%
3/25Chinyang Poly UrethaneA major holder's stake rose from 50.50% to 51.87% (rights offering).51.87%
3/25WaviceA major holder's stake fell from 8.96% to 7.76%.7.76%
3/25KCA major holder's stake rose from 41.99% to 43.18%.43.18%
3/25KinxA major holder's stake rose from 5.06% to 6.13%.6.13%
3/25Hanmi Pharm.National Pension Service's stake fell from 11.53% to 10.61%.10.61%
3/25GS Engineering & ConstructionA major holder's stake fell from 23.64% to 23.22%.23.22%
3/25SamwonsteelA major holder's stake fell from 61.24% to 61.06% (related-party change).61.06%
3/25MecaroA major holder's stake rose from 54.13% to 54.24%.54.24%
3/25Hanwha General InsuranceA major holder's stake fell from 63.76% to 63.68% (related-party change).63.68%
3/25Hana MaterialsA major holder's stake fell from 44.93% to 44.87% (pledge).44.87%
3/25HuonsA major holder's stake fell from 44.84% to 44.82% (pledge).44.82%
3/25Hanwha Life InsuranceA major holder's stake fell from 45.33% to 45.31% (related-party change).45.31%
3/25KctechA major holder's stake rose from 53.93% to 53.95%.53.95%
3/25Hanwha Investment&securitiesA major holder's stake fell from 45.25% to 45.24% (related-party change).45.24%
3/25InnotechA major holder's stake rose from 38.88% to 38.89% (open-market buy).38.89%
3/25Hyulim ROBOTA major holder's stake rose from 5.25% to 5.25% (pledge).5.25%
3/25Woosung MaterialsA major holder's stake rose from 17.53% to 17.53% (pledge).17.53%
3/25DY PowerA major holder's stake rose from 38.52% to 38.52% (related-party change).38.52%
3/25Korea LineA major holder's stake rose from 48.81% to 48.81% (related-party change).48.81%
3/25Daeho ALA major holder's stake rose from 13.78% to 13.78%.13.78%
3/25RayA major holder's stake rose from 27.42% to 27.42% (pledge).27.42%

Buybacks 10

3/25TrustNetmarbleSigned a ₩82.8B trust contract to buy back shares.₩82.8B
3/25TrustDentiumSigned a ₩60B trust contract to buy back shares.₩60B
3/25DisposalSK SquarePlans to dispose of 98,135 sh of treasury stock, Mar 26 to Apr 25.₩58.4B
3/25BuybackSK SquarePlans to buy back 67,226 sh of treasury stock, Mar 26 to Jun 25.₩40B
3/25TrustManyo FactorySigned a ₩5B trust contract to buy back shares.₩5B
3/25ExemShare cancellation
3/25YoungpoongShare cancellation
3/25SK SquareShare cancellation
3/25Hankook SteelShare cancellation
3/25PangrimShare cancellation

Share issues & bonds 15

3/25Capital reductionMason CapitalCapital reduction of 80%.80%
3/25AmendedCapital reductionQ Capital PartnersCapital reduction of 60%.60%
3/25AmendedGeneOne Life ScienceConvertible bond issue
3/25AmendedAlpha AIConvertible bond issue
3/25AmendedDaiyang MetalConvertible bond issue
3/25AmendedAlpha AIConvertible bond issue
3/25AmendedNexa DynamicsConvertible bond issue
3/25InnospaceRights offering
3/25ObigoConvertible bond issue
3/25AmendedVictory ContentsRights offering
3/25AmendedItoxiRights offering
3/25AmendedDynamic solutionConvertible bond issue
3/25Kakao GamesConvertible bond issue
3/25Dynamic solutionConvertible bond issue
3/25Kakao GamesRights offering

M&A & spin-offs 3

3/25Choolip & SciencesStake acquisition/disposal
3/25NetmarbleShare exchange
3/25AmendedModa-InnoChipsMerger

Exchange actions 10

3/25EehwaConstructionTrading halt
3/25EehwaConstructionTrading halt
3/25Copus KoreaUnfaithful disclosure
3/25CarryAdministrative issue
3/25BK HoldingsAdministrative issue
3/25AmendedEutilexAdministrative issue
3/25Mason CapitalTrading halt
3/25SphereTrading halt
3/25Hankook SteelInvestment caution
3/25SK hynixExchange inquiry