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Key filings, April 17, 2026

454 filings · 5 highlights
← April 16, 2026April 20, 2026 →

Supply contracts 20

4/17AmendedSphereWorth 53.6% of last year's revenue, over about 12 months.₩1.4B
4/17AmendedKEPCO Plant Service & EngineeringWorth 46.4% of last year's revenue, over about 160 months.₩468B
4/17AmendedSeoulAuctionCo.Ltd..Worth 29.4% of last year's revenue, over about 3 months.₩6B
4/17Dae Myoung EnergyWorth 25.4% of last year's revenue, over about 11 months.₩33.3B
4/17AmendedSamsung E&AWorth 17.7% of last year's revenue, over about 60 months.₩1.88T
4/17AmendedSamsung E&AWorth 10.2% of last year's revenue, over about 52 months.₩761B
4/17GigalaneWorth 9.3% of last year's revenue, over about 5 months.₩3.8B
4/17AmendedADTechnologyWorth 7.6% of last year's revenue, over about 13 months.₩12.5B
4/17AmendedktcsWorth 7.3% of last year's revenue, over about 24 months.₩75.1B
4/17AmendedVictekWorth 6.8% of last year's revenue, over about 26 months.₩3.7B
4/17GigalaneWorth 6.2% of last year's revenue, over about 6 months.₩2.5B
4/17DL HoldingsWorth 4.9% of last year's revenue, over about 50 months.₩362B
4/17DL E&CWorth 4.9% of last year's revenue, over about 50 months.₩362B
4/17HD Korea Shipbuilding & Offshore EngineeringWorth 3.8% of last year's revenue, over about 43 months.₩675B
4/17HD Hyundai Heavy IndustriesWorth 3.8% of last year's revenue, over about 43 months.₩675B
4/17AmendedHankuk CarbonWorth 3.8% of last year's revenue.₩15.7B
4/17GS Engineering & ConstructionWorth 3% of last year's revenue.₩375B
4/17AmendedTaihan Cable & SolutionWorth 2.6% of last year's revenue, over about 36 months.₩73.9B
4/17HyosungSupply contract terminated
4/17Hyosung Heavy IndustriesSupply contract terminated

Insider trades 112

4/17HlscienceInsider ownership report
4/17TJ MediaInsider ownership report
4/17HD Hyundai ElectricInsider ownership report
4/17Hyundai MovexInsider ownership report
4/17TJ MediaInsider ownership report
4/17FaduInsider ownership report
4/17FinetekInsider ownership report
4/17TJ MediaInsider ownership report
4/17Telcon RF PharmaceuticalInsider ownership report
4/17AxgateInsider ownership report
4/17FaduInsider ownership report
4/17AxgateInsider ownership report
4/17FaduInsider ownership report
4/17CuroholdingsInsider ownership report
4/17FaduInsider ownership report
4/17MintechInsider ownership report
4/17HanWool SemiconductorInsider ownership report
4/17AmendedIncar Financial ServiceInsider ownership report
4/17Qualitas SemiconductorInsider ownership report
4/17Onconic TherapeuticsInsider ownership report
4/17WON TechInsider ownership report
4/17NaverInsider ownership report
4/17NaverInsider ownership report
4/17AprogenInsider ownership report
4/17AprogenInsider ownership report
4/17PIM KoreaInsider ownership report
4/17NaverInsider ownership report
4/17AprogenInsider ownership report
4/17AprogenInsider ownership report
4/17Qualitas SemiconductorInsider ownership report
4/17NaverInsider ownership report
4/17PIM KoreaInsider ownership report
4/17Hansol HoldingsInsider ownership report
4/17Sanil ElectricInsider ownership report
4/17Sungchang Enterprise Holdings Limited.Insider ownership report
4/17Sungchang Enterprise Holdings Limited.Insider ownership report
4/17Qualitas SemiconductorInsider ownership report
4/17Sungchang Enterprise Holdings Limited.Insider ownership report
4/17NaverInsider ownership report
4/17Hanwha AerospaceInsider ownership report
All insider trades →

5% holders 49

4/17New 5%Choolip & SciencesA major holder's stake rose from 0.00% to 19.66% (rights offering).19.66%
4/17New 5%Lightron Fiber-Optic DevicesA major holder's stake rose from 0.00% to 6.33% (new report).6.33%
4/17New 5%KctechA major holder's stake rose from 0.00% to 5.16%.5.16%
4/17FantagioA major holder's stake rose from 50.09% to 58.83%.58.83%
4/17Telcon RF PharmaceuticalA major holder's stake rose from 17.78% to 21.57% (rights offering).21.57%
4/17Below 5%Innocean WorldwideA major holder's stake fell from 6.50% to 3.00%.3.00%
4/17FinetekA major holder's stake fell from 9.47% to 6.96% (share lending).6.96%
4/17Below 5%ContecA major holder's stake fell from 6.37% to 4.27%.4.27%
4/17Below 5%QuantumRailA major holder's stake fell from 5.26% to 3.24% (conversion/exercise).3.24%
4/17Qualitas SemiconductorA major holder's stake fell from 32.46% to 30.52% (open-market sale).30.52%
4/17CuroholdingsA major holder's stake fell from 65.36% to 63.47% (share consolidation/split).63.47%
4/17AxgateA major holder's stake fell from 20.14% to 18.37% (open-market sale).18.37%
4/17BaiksanA major holder's stake rose from 59.70% to 61.34% (open-market buy).61.34%
4/17Below 5%WaviceA major holder's stake fell from 6.34% to 4.93% (open-market sale).4.93%
4/17Exion Group CompanyA major holder's stake fell from 8.15% to 6.89% (conversion/exercise).6.89%
4/17MKElectronA major holder's stake fell from 35.95% to 35.05% (related-party change).35.05%
4/17Hyundai MovexA major holder's stake fell from 49.99% to 49.17% (related-party change).49.17%
4/17SK DiscoveryA major holder's stake rose from 55.77% to 56.46% (open-market buy).56.46%
4/17ArootA major holder's stake rose from 17.25% to 17.87% (open-market buy).17.87%
4/17Daejin Advanced MaterialsA major holder's stake fell from 23.21% to 22.62% (related-party change).22.62%
4/17Curiox BiosystemsA major holder's stake fell from 18.39% to 17.84% (open-market sale).17.84%
4/17KUMHO Engineering & ConstructionA major holder's stake fell from 48.25% to 47.86% (related-party change).47.86%
4/17SigetronicsA major holder's stake fell from 25.94% to 25.80%.25.80%
4/17EcoSimplexA major holder's stake rose from 37.54% to 37.65% (related-party change).37.65%
4/17Kyochon Food&beverageA major holder's stake rose from 69.40% to 69.43% (related-party change).69.43%
4/17T&R BiofabA major holder's stake rose from 15.45% to 15.47% (conversion/exercise).15.47%
4/17L&K BiomedA major holder's stake rose from 11.99% to 12.01% (related-party change).12.01%
4/17YMTA major holder's stake fell from 36.60% to 36.58% (related-party change).36.58%
4/17Hansol HoldingsA major holder's stake rose from 34.92% to 34.93% (related-party change).34.93%
4/17Sungho ElectronicsA major holder's stake rose from 64.37% to 64.38% (open-market buy).64.38%
4/17AprogenA major holder's stake fell from 58.46% to 58.45% (conversion/exercise).58.45%
4/17Samsung Electronics Co,A major holder's stake rose from 19.70% to 19.70%.19.70%
4/17E Kocref Cr-ReitA major holder's stake rose from 47.96% to 47.96%.47.96%
4/17IS DongseoA major holder's stake rose from 55.89% to 55.89%.55.89%
4/17TJ MediaA major holder's stake rose from 54.81% to 54.81% (bonus issue).54.81%
4/17Openedges TechnologyReport of 5%+ holding
4/17Deutsch MotorsA major holder's stake rose from 39.21% to 39.21% (share lending).39.21%
4/17Iljin PowerA major holder's stake rose from 36.79% to 36.79% (share lending).36.79%
4/17HanWool SemiconductorA major holder's stake rose from 36.30% to 36.30% (share consolidation/split).36.30%
4/17Ahn-Gook PharmaceuticalA major holder's stake rose from 48.22% to 48.22%.48.22%
All 5% holders →

Buybacks 6

4/17BuybackM2nPlans to buy back 1,851,891 sh of treasury stock, Apr 17 to Apr 17.₩10.7B
4/17TrustTplexEnded a share buyback trust contract.₩3B
4/17TrustPentastone ElectronicsEnded a share buyback trust contract.₩3B
4/17DisposalMecaroPlans to dispose of 100,000 sh of treasury stock, Apr 27 to Apr 27.₩1.2B
4/17DisposalCreverPlans to dispose of 40,000 sh of treasury stock, Apr 17 to Apr 24.₩206.9M
4/17M2nShare cancellation

Share issues & bonds 20

4/17AmendedCapital reductionTelcon RF PharmaceuticalCapital reduction of 90%.90%
4/17AmendedCapital reductionKPM TechCapital reduction of 90%.90%
4/17AmendedRights offeringKPM TechIssuing 5,194,805 sh of new shares, equal to 26.6% of existing shares.₩8B
4/17Rights offeringCurocellIssuing 603,803 sh of new shares, equal to 4% of existing shares.₩36.3B
4/17CBCurocellConversion price ₩60,200; if all converted, equal to 3.8% of shares outstanding.₩36.4B
4/17AmendedCBLightron Fiber-Optic DevicesConversion price ₩1,692; if all converted, equal to 3% of shares outstanding.₩5B
4/17AmendedRights offeringKUMHO Engineering & ConstructionIssuing 263,214 sh of new shares, equal to 0.7% of existing shares.₩42.4B
4/17PintelRights offering
4/17AmendedHanwhaRights offering
4/17AmendedCelemicsRights offering
4/17AmendedPintelRights offering
4/17AmendedNexa DynamicsConvertible bond issue
4/17AmendedPintelConvertible bond issue
4/17AmendedGeneOne Life ScienceConvertible bond issue
4/17AmendedHanwha SolutionsRights offering
4/17Namu AXBond with warrants issue
4/17AmendedDongsung PharmaceuticalCapital reduction
4/17Joyworks&Bonus issue
4/17AmendedDaeho ALConvertible bond issue
4/17AmendedPeopleBioRights offering

M&A & spin-offs 1

4/17AmendedOncocrossMerger

Exchange actions 15

4/17KEM TechTrading halt
4/17KEM TechExchange
4/17DawonsysTrading halt
4/17Samchuly BicycleTrading halt
4/17CelestraExchange
4/17Daejin Advanced MaterialsTrading halt
4/17EOFlowExchange
4/17EutilexExchange
4/17NHN BugsUnfaithful disclosure
4/17Daejin Advanced MaterialsExchange
4/17SEJONG MEDICAL Co.Ltd.Exchange
4/17Hyundai FeedExchange
4/17Joyworks&Bonus issue
4/17Hanwha SolutionsUnfaithful disclosure
4/17DL HoldingsExchange inquiry