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Key filings, May 21, 2026

498 filings · 11 highlights
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Supply contracts 15

5/21AmendedSatrecInitiativeWorth 76.7% of last year's revenue, over about 54 months.₩70.2B
5/21AmendedKorea Engineering ConsultantsWorth 25.2% of last year's revenue, over about 31 months.₩71.5B
5/21AmendedDoosan Fuel CellWorth 20.3% of last year's revenue, over about 18 months.₩52.9B
5/21AmendedWoowon DevelopmentWorth 18.1% of last year's revenue, over about 51 months.₩35.6B
5/21AmendedDaea TIWorth 16.9% of last year's revenue, over about 105 months.₩14.5B
5/21HD HyundaiWorth 13.4% of last year's revenue, over about 43 months.₩1.08T
5/21HD Korea Shipbuilding & Offshore EngineeringWorth 13.4% of last year's revenue, over about 43 months.₩1.08T
5/21JNK GlobalWorth 12.1% of last year's revenue, over about 15 months.₩17.9B
5/21AbClonWorth 9% of last year's revenue, over about 2 months.₩424.1M
5/21Hankuk CarbonWorth 7.9% of last year's revenue, over about 19 months.₩72B
5/21AmendedKUMHO Engineering & ConstructionWorth 7.5% of last year's revenue, over about 25 months.₩154B
5/21TESWorth 6.1% of last year's revenue, over about 8 months.₩21.5B
5/21AmendedGS Engineering & ConstructionWorth 5.7% of last year's revenue, over about 46 months.₩574B
5/21Hanmi ScienceWorth 3.4% of last year's revenue, over about 120 months.₩52.7B
5/21Hanmi Pharm.Worth 3.4% of last year's revenue, over about 120 months.₩52.7B

Insider trades 74

5/21KodiInsider ownership report
5/21InnodepInsider ownership report
5/21iM Financial GroupInsider ownership report
5/21Bookook SecuritiesInsider ownership report
5/21G2gbioInsider ownership report
5/21G2gbioInsider ownership report
5/21Seoul Electronics & TelecomInsider ownership report
5/21G2gbioInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21NauroboticsInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21Rokit HealthcareInsider ownership report
5/21GlobalStandardTechnologyInsider ownership report
5/21Koramco Life Infra ReitInsider ownership report
5/21IGIS Value Plus REITInsider ownership report
5/21E Kocref Cr-ReitInsider ownership report
5/21Shinhan Alpha REIT Co,.Insider ownership report
5/21Lotte ReitInsider ownership report
5/21ESR Kendall Square REITInsider ownership report
5/21DB HiTekInsider ownership report
5/21Hanwha REITInsider ownership report
5/21SamsungFN REITInsider ownership report
5/21Koramco the ONE ReitInsider ownership report
5/21Shinhan Seobu T&D REITInsider ownership report
5/21SK ReitInsider ownership report
5/21D&D Platform REITInsider ownership report
5/21Mobile ApplianceInsider ownership report
5/21TongyangInsider ownership report
5/21SeoyonInsider ownership report
5/21HanssemInsider ownership report
5/21SSRInsider ownership report
5/21KC FeedInsider ownership report
5/21Hyosung ChemicalInsider ownership report
5/21BellockInsider ownership report
5/21Hansol TechnicsInsider ownership report
5/21Samjin PharmaceuticalInsider ownership report
5/21HybeInsider ownership report
All insider trades →

5% holders 51

5/21AmendedNew 5%Nine & CompanyA major holder's stake rose from 0.00% to 44.14% (new report).44.14%
5/21Below 5%Seoul Electronics & TelecomA major holder's stake fell from 42.18% to 0.00% (related-party change).0.00%
5/21New 5%Satoshi HoldingsA major holder's stake rose from 0.00% to 16.31% (share consolidation/split).16.31%
5/21Hyosung ChemicalA major holder's stake rose from 52.17% to 71.50% (conversion/exercise).71.50%
5/21Hansol TechnicsA major holder's stake rose from 21.11% to 39.29% (rights offering).39.29%
5/21New 5%FingerA major holder's stake rose from 0.00% to 7.80% (conversion/exercise).7.80%
5/21Rokit HealthcareA major holder's stake fell from 42.83% to 25.97% (related-party change).25.97%
5/21New 5%Aurora WorldA major holder's stake rose from 0.00% to 5.30%.5.30%
5/21New 5%ProtecA major holder's stake rose from 4.84% to 6.55%.6.55%
5/21New 5%Hansol TechnicsA major holder's stake rose from 4.26% to 5.04%.5.04%
5/21New 5%NeuromekaA major holder's stake rose from 4.97% to 5.07%.5.07%
5/21Below 5%Mobile ApplianceA major holder's stake fell from 10.71% to 2.76% (pledge).2.76%
5/21KBI MetalA major holder's stake fell from 31.11% to 26.50% (pledge).26.50%
5/21BrainzcompanyA major holder's stake rose from 40.91% to 43.91% (related-party change).43.91%
5/21AmendedHybeA major holder's stake fell from 44.27% to 41.38% (open-market sale).41.38%
5/21NauroboticsA major holder's stake fell from 48.83% to 46.06% (related-party change).46.06%
5/21AmendedHybeA major holder's stake fell from 46.89% to 44.27% (related-party change).44.27%
5/21Synergy InnovationA major holder's stake fell from 40.76% to 38.27% (pledge).38.27%
5/21I-RoboticsA major holder's stake rose from 5.10% to 7.05% (open-market buy).7.05%
5/21ITM SemiconductorA major holder's stake fell from 63.33% to 61.44% (related-party change).61.44%
5/21Higen RNMA major holder's stake fell from 24.28% to 22.66%.22.66%
5/21ShinhwapritechA major holder's stake rose from 46.15% to 47.49%.47.49%
5/21Below 5%HyunwooindustrialA major holder's stake fell from 5.56% to 4.56% (open-market sale).4.56%
5/21Samhyun SteelA major holder's stake fell from 60.18% to 59.51%.59.51%
5/21CreverA major holder's stake rose from 25.35% to 25.73% (open-market buy).25.73%
5/21ObigoA major holder's stake rose from 32.72% to 33.06% (open-market buy).33.06%
5/21HybeA major holder's stake fell from 41.38% to 41.06% (related-party change).41.06%
5/21Kyung-In SyntheticA major holder's stake fell from 33.93% to 33.66% (open-market sale).33.66%
5/21SeoyonA major holder's stake rose from 46.62% to 46.86% (related-party change).46.86%
5/21SSRA major holder's stake rose from 49.41% to 49.57% (open-market buy).49.57%
5/21HanaMicronA major holder's stake rose from 26.27% to 26.41% (open-market sale).26.41%
5/21UracleA major holder's stake rose from 32.29% to 32.33% (open-market buy).32.33%
5/21Hansol HomeDeA major holder's stake fell from 25.66% to 25.63% (related-party change).25.63%
5/21SOS LABA major holder's stake rose from 23.74% to 23.76% (open-market buy).23.76%
5/21Pan OceanA major holder's stake fell from 54.91% to 54.90% (related-party change).54.90%
5/21GlobalStandardTechnologyA major holder's stake rose from 23.18% to 23.19% (related-party change).23.19%
5/21E1A major holder's stake rose from 45.41% to 45.42% (related-party change).45.42%
5/21Mobile ApplianceA major holder's stake rose from 7.14% to 7.14%.7.14%
5/21HanJungNCS.A major holder's stake rose from 35.47% to 35.47% (pledge).35.47%
5/21GemVax & KAELA major holder's stake rose from 25.90% to 25.90% (share lending).25.90%
All 5% holders →

Buybacks 5

5/21BuybackCelltrionPlans to buy back 557,414 sh of treasury stock, Jun 8 to Aug 21.₩100B
5/21TrustKorea Fuel-TechSigned a ₩10B trust contract to buy back shares.₩10B
5/21TrustiFamilySC Co,.Signed a ₩5B trust contract to buy back shares.₩5B
5/21DisposaliFamilySC Co,.Plans to dispose of 17,496 sh of treasury stock, May 21 to May 28.₩152.6M
5/21AmendedKorea SteelShare cancellation

Share issues & bonds 26

5/21Capital reductionBecu AICapital reduction of 80%.80%
5/21CBAprogen BiologicsConversion price ₩4,433; if all converted, equal to 15.7% of shares outstanding.₩10B
5/21CBJW ShinyakConversion price ₩3,000; if all converted, equal to 8.2% of shares outstanding.₩15B
5/21CBFine M-TecConversion price ₩9,920; if all converted, equal to 7.8% of shares outstanding.₩35B
5/21CBAprogenConversion price ₩5,350; if all converted, equal to 6.7% of shares outstanding.₩10B
5/21BWPark SystemsExercise price ₩267,747; if all exercised, equal to 5.3% of shares outstanding.₩100B
5/21Bonus issueCelltrionBonus issue of new shares equal to 4.9% of existing shares.10,920,342 sh
5/21CBUTIConversion price ₩21,178; if all converted, equal to 2.3% of shares outstanding.₩10B
5/21Blitzway EntertainmentRights offering
5/21AprogenConvertible bond issue
5/21AmendedSKCapital reduction
5/21AmendedSK InnovationCapital reduction
5/21AmendedCelemicsRights offering
5/21AmendedLOTTE rentalRights offering
5/21GMI VentureConvertible bond issue
5/21AmendedKorea Cable T.v Chung-Buk SystemCapital reduction
5/21Kyung NAM PharmRights offering
5/21AmendedHyulim A-TechRights offering
5/21AmendedBitplanetConvertible bond issue
5/21AmendedMsdiRights offering
5/21AmendedARIBIO HoldingsConvertible bond issue
5/21AmendedBitplanetConvertible bond issue
5/21CSConvertible bond issue
5/21AmendedFocus AIRights offering
5/21AmendedAutechBond with warrants issue
5/21AmendedAgent AIRights offering

M&A & spin-offs 5

5/21AmendedLightron Fiber-Optic DevicesMerger
5/21Wooyang P&LMerger
5/21AmendedE-MartShare exchange
5/21AmendedDeviceMerger
5/21AmendedSungchang Enterprise Holdings Limited.Merger

Exchange actions 13

5/21Parataxis KoreaTrading halt
5/21Parataxis KoreaExchange
5/21LinkedTrading halt
5/21SungwooelectronicsUnfaithful disclosure
5/21FinetekTrading halt
5/21Welkeeps HitechTrading halt
5/21MemRAY BTTrading halt
5/21EehwaConstructionTrading halt
5/21BellockExchange inquiry
5/21OptiCoreTrading halt
5/21Becu AITrading halt
5/21Wooyang P&LTrading halt
5/21KumyangExchange