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Key filings, May 13, 2026

579 filings · 11 highlights
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Supply contracts 17

5/13Yunsung F&CWorth 49.6% of last year's revenue, over about 38 months.₩49.7B
5/13PhilenergyWorth 44.5% of last year's revenue, over about 27 months.₩14.8B
5/13Hanwha EngineWorth 25.8% of last year's revenue, over about 25 months.₩354B
5/13Green LifescienceWorth 24.9% of last year's revenue, over about 7 months.₩10.1B
5/13AmendedShinwonConstructionWorth 22.8% of last year's revenue, over about 46 months.₩31.6B
5/13AmendedNamkwang Engineering & ConstructionWorth 21% of last year's revenue, over about 94 months.₩33B
5/13AmendedShinwonConstructionWorth 20.5% of last year's revenue, over about 69 months.₩52.6B
5/13MiraeWorth 15.7% of last year's revenue, over about 4 months.₩8B
5/13SECWorth 15.7% of last year's revenue, over about 29 months.₩9.3B
5/13CenotecWorth 13.1% of last year's revenue, over about 8 months.₩4.7B
5/13JS LinkWorth 12.9% of last year's revenue, over about 7 months.₩2.5B
5/13HD HyundaiWorth 9.3% of last year's revenue, over about 38 months.₩749B
5/13HD Korea Shipbuilding & Offshore EngineeringWorth 9.3% of last year's revenue, over about 38 months.₩749B
5/13KCC Engineering & ConstructionWorth 8.4% of last year's revenue, over about 56 months.₩154B
5/13AmendedKCC Engineering & ConstructionWorth 6.4% of last year's revenue, over about 68 months.₩70.4B
5/13Osang HealthcareWorth 5.1% of last year's revenue, over about 6 months.₩6.6B
5/13AmendedHansung CleantechWorth 4.1% of last year's revenue, over about 19 months.₩15B

Preliminary earnings 37

5/13Swung to profitSK InnovationOperating profit: swung to profit (-₩30.7B → ₩2.16T). Revenue ₩24.21T, up 15.2% YoY.₩2.16T
5/13Swung to lossNE NeungyuleOperating profit: swung to loss (₩358M → -₩12.1B). Revenue ₩2B, down 87.9% YoY.-₩12.1B
5/13HD HyundaiOperating profit ₩934B, up 2901.6% YoY. Revenue ₩7.72T, up 8.3% YoY.₩934B
5/13NCOperating profit ₩113B, up 2070.1% YoY. Revenue ₩557B, up 54.7% YoY.₩113B
5/13KidariStudioOperating profit ₩3.4B, up 574.9% YoY. Revenue ₩58.3B, up 20.9% YoY.₩3.4B
5/13JW ShinyakOperating profit ₩2.9B, up 332.2% YoY. Revenue ₩21.4B, up 8.8% YoY.₩2.9B
5/13Com2usOperating profit ₩5.1B, up 206.8% YoY. Revenue ₩145B, down 13.9% YoY.₩5.1B
5/13AU BrandzOperating profit ₩2B, up 154.1% YoY. Revenue ₩18.5B, up 136.1% YoY.₩2B
5/13KolonGlobalOperating profit ₩22B, up 129.3% YoY. Revenue ₩631B, down 2% YoY.₩22B
5/13HD HyundaiOperating profit ₩2.83T, up 120.4% YoY. Revenue ₩19.60T, up 14.7% YoY.₩2.83T
5/13IL Dong PharmaceuticalOperating profit ₩9.2B, up 120% YoY. Revenue ₩142B, up 4.4% YoY.₩9.2B
5/13Ildong HoldingsOperating profit ₩8.9B, up 117.5% YoY. Revenue ₩149B, down 0.6% YoY.₩8.9B
5/13SKNetworksCompanyOperating profit ₩33.4B, up 102.4% YoY. Revenue ₩1.74T, up 6.5% YoY.₩33.4B
5/13GabiaOperating profit ₩10.7B, up 85.7% YoY. Revenue ₩85B, up 10.4% YoY.₩10.7B
5/13Kyung Dong NavienOperating profit ₩63.8B, up 61.7% YoY. Revenue ₩425B, up 16.5% YoY.₩63.8B
5/13GS HoldingsOperating profit ₩1.26T, up 56.7% YoY. Revenue ₩6.84T, up 9.9% YoY.₩1.26T
5/13Com2usOperating profit ₩7.7B, up 47.1% YoY. Revenue ₩123B, down 5.9% YoY.₩7.7B
5/13DoubleUGamesOperating profit ₩16.2B, up 37.1% YoY. Revenue ₩45.8B, up 4.3% YoY.₩16.2B
5/13Hanatour ServiceOperating profit ₩16.8B, up 36.5% YoY. Revenue ₩175B, up 3.8% YoY.₩16.8B
5/13BioNoteOperating profit ₩6.3B, up 35.2% YoY. Revenue ₩32.6B, up 14.5% YoY.₩6.3B
5/13DoubleUGamesOperating profit ₩68.5B, up 25.1% YoY. Revenue ₩205B, up 26.6% YoY.₩68.5B
5/13JW LifescienceOperating profit ₩8.9B, down 14% YoY. Revenue ₩59.3B, down 4.5% YoY.₩8.9B
5/13E-MartOperating profit ₩178B, up 11.9% YoY. Revenue ₩7.12T, down 1.3% YoY.₩178B
5/13SPGOperating profit ₩4.5B, up 9.7% YoY. Revenue ₩80.8B, down 13.4% YoY.₩4.5B
5/13KoreaGasOperating profit ₩910B, up 9.1% YoY. Revenue ₩11.80T, down 7.3% YoY.₩910B
5/13CJ LogisticsOperating profit ₩92.1B, up 7.9% YoY. Revenue ₩3.21T, up 7.4% YoY.₩92.1B
5/13Hankook & CompanyOperating profit ₩122B, down 4.1% YoY. Revenue ₩378B, down 2.7% YoY.₩122B
5/13ClassysOperating profit ₩37.2B, down 4.1% YoY. Revenue ₩87.2B, up 13% YoY.₩37.2B
5/13GabiaOperating profit ₩1.7B, up 1.4% YoY. Revenue ₩28B, up 12.4% YoY.₩1.7B
5/13Korea Electric PowerOperating profit ₩3.78T, up 0.8% YoY. Revenue ₩24.40T, up 0.7% YoY.₩3.78T
5/13Loss widenedCom2uS HoldingsOperating profit: loss widened (-₩3.2B → -₩9.9B). Revenue ₩17.1B, down 29.6% YoY.-₩9.9B
5/13Loss widenedZGOO HoldingsOperating profit: loss widened (-₩710M → -₩1.6B). Revenue ₩7B, up 24.1% YoY.-₩1.6B
5/13AmendedSK InnovationPreliminary operating results
5/13Loss widenedSK ie technologyOperating profit: loss widened (-₩69.6B → -₩73.2B). Revenue ₩35.9B, down 38.4% YoY.-₩73.2B
5/13Loss narrowedWoongjin ThinkbigOperating profit: loss narrowed (-₩10.7B → -₩3.4B). Revenue ₩180B, down 8.8% YoY.-₩3.4B
5/13Loss widenedHS AdOperating profit: loss widened (-₩9.5B → -₩12.1B). Revenue ₩72.1B, down 10.7% YoY.-₩12.1B
5/13E-MartPreliminary operating results

Insider trades 79

5/13Smart Radar SystemInsider ownership report
5/13KTInsider ownership report
5/13Dx & VxInsider ownership report
5/13KTInsider ownership report
5/13Smart Radar SystemInsider ownership report
5/13HyperInsider ownership report
5/13SK SquareInsider ownership report
5/13SK SquareInsider ownership report
5/13AmendedOptiCoreInsider ownership report
5/13KTInsider ownership report
5/13SK SquareInsider ownership report
5/13SK SquareInsider ownership report
5/13SimpacInsider ownership report
5/13SK SquareInsider ownership report
5/13CG InvitesInsider ownership report
5/13OptiCoreInsider ownership report
5/13KTInsider ownership report
5/13CG InvitesInsider ownership report
5/13TplexInsider ownership report
5/13Kumho Petro ChemicalInsider ownership report
5/13Openedges TechnologyInsider ownership report
5/13Miwon CommercialInsider ownership report
5/13OptiCoreInsider ownership report
5/13Fine M-TecInsider ownership report
5/13SK ChemicalsInsider ownership report
5/13OptiCoreInsider ownership report
5/13The Asia Business DailyInsider ownership report
5/13Daesung IndustrialInsider ownership report
5/13KTInsider ownership report
5/13S ConnectInsider ownership report
5/13Daesung IndustrialInsider ownership report
5/13KTInsider ownership report
5/13Daesung IndustrialInsider ownership report
5/13KTInsider ownership report
5/13KTInsider ownership report
5/13Daesung IndustrialInsider ownership report
5/13KTInsider ownership report
5/13Daesung IndustrialInsider ownership report
5/13Poongsan HoldingsInsider ownership report
5/13KTInsider ownership report
All insider trades →

5% holders 35

5/13New 5%BitmaxA major holder's stake rose from 0.00% to 63.45% (conversion/exercise).63.45%
5/13Below 5%BitmaxA major holder's stake fell from 45.32% to 0.00% (share lending).0.00%
5/13New 5%HanWool & JejuA major holder's stake rose from 0.00% to 16.01% (new report).16.01%
5/13New 5%Taihan Cable & SolutionA major holder's stake rose from 0.00% to 5.11% (new report).5.11%
5/13New 5%LSA major holder's stake rose from 0.00% to 5.01% (new report).5.01%
5/13Lightron Fiber-Optic DevicesA major holder's stake fell from 20.59% to 7.02% (conversion/exercise).7.02%
5/13New 5%HugelA major holder's stake rose from 4.93% to 5.05%.5.05%
5/13AmendedDawon NexviewA major holder's stake fell from 44.08% to 40.25% (related-party change).40.25%
5/13AmendedElensysA major holder's stake fell from 35.55% to 33.39% (related-party change).33.39%
5/13MediaZenA major holder's stake fell from 40.88% to 38.86%.38.86%
5/13FnGuideA major holder's stake fell from 9.97% to 8.65% (open-market sale).8.65%
5/13HumaxA major holder's stake fell from 37.10% to 35.92% (stock option).35.92%
5/13TplexA major holder's stake rose from 30.00% to 31.10% (open-market buy).31.10%
5/13HanWool SemiconductorA major holder's stake rose from 11.91% to 12.84% (conversion/exercise).12.84%
5/13NBTA major holder's stake fell from 23.32% to 22.63% (pledge).22.63%
5/13Below 5%SK TelecomA major holder's stake fell from 5.01% to 4.79% (related-party change).4.79%
5/13OptiCoreA major holder's stake fell from 18.08% to 17.87% (share consolidation/split).17.87%
5/13SM BexelA major holder's stake rose from 87.92% to 88.03% (open-market buy).88.03%
5/13Bookook SecuritiesA major holder's stake rose from 34.57% to 34.66% (related-party change).34.66%
5/13AmendedDawonsysA major holder's stake fell from 13.87% to 13.80% (related-party change).13.80%
5/13NuriFlexA major holder's stake fell from 36.67% to 36.61%.36.61%
5/13Smart Radar SystemA major holder's stake fell from 27.38% to 27.33% (pledge).27.33%
5/13GemVax & KAELA major holder's stake rose from 25.86% to 25.90% (open-market sale).25.90%
5/13Fine M-TecA major holder's stake fell from 27.33% to 27.29% (pledge).27.29%
5/13Dx & VxA major holder's stake rose from 61.85% to 61.86%.61.86%
5/13Shin SteelA major holder's stake rose from 68.62% to 68.63% (pledge).68.63%
5/13DongwonDevelopmentA major holder's stake rose from 65.81% to 65.82%.65.82%
5/13The LEADA major holder's stake rose from 40.72% to 40.72% (pledge).40.72%
5/13HyperA major holder's stake rose from 46.36% to 46.36% (share consolidation/split).46.36%
5/13DongKoo Bio & PharmaA major holder's stake rose from 37.12% to 37.12% (pledge).37.12%
5/13WISE iTechA major holder's stake rose from 34.78% to 34.78%.34.78%
5/13AmendedNine & CompanyReport of 5%+ holding
5/13SoftcenA major holder's stake rose from 20.66% to 20.66% (share consolidation/split).20.66%
5/13NH Investment & SecuritiesA major holder's stake rose from 61.94% to 61.94% (related-party change).61.94%
5/13AmendedDawonsysReport of 5%+ holding

Buybacks 13

5/13DisposalSK hynixPlans to dispose of 114,209 sh of treasury stock, May 20 to Mar 30.₩14.2B
5/13BuybackMisto HoldingsPlans to buy back 269,905 sh of treasury stock, May 14 to Aug 13.₩10B
5/13DisposalHpspPlans to dispose of 86,969 sh of treasury stock, May 13 to Jun 30.₩4.5B
5/13BuybackBaiksanPlans to buy back 250,000 sh of treasury stock, May 14 to Aug 13.₩2.8B
5/13TrustSH Energy & ChemicalEnded a share buyback trust contract.₩2B
5/13DisposalPark SystemsPlans to dispose of 732 sh of treasury stock, May 14 to Aug 13.₩218.5M
5/13KohYoungTechnologyShare cancellation
5/13Wemade PlayShare cancellation
5/13GI InnovationShare cancellation
5/13Ubiquoss HoldingsShare cancellation
5/13Hanil HoldingsShare cancellation
5/13SK SquareTreasury stock disposal
5/13KohYoungTechnologyTreasury stock disposal

Share issues & bonds 25

5/13AmendedCBOptrontecConversion price ₩1,922; if all converted, equal to 26.9% of shares outstanding.₩25B
5/13CBLabGenomics.Conversion price ₩1,466; if all converted, equal to 18.4% of shares outstanding.₩20B
5/13AmendedCBOptrontecConversion price ₩1,922; if all converted, equal to 12.8% of shares outstanding.₩10B
5/13CBMercuryConversion price ₩10,079; if all converted, equal to 6.5% of shares outstanding.₩12B
5/13CBDynamic solutionConversion price ₩1,141; if all converted, equal to 4.9% of shares outstanding.₩5B
5/13AmendedRights offeringNeotechnicalsystemIssuing 662,000 sh of new shares, equal to 4.8% of existing shares.₩18.6B
5/13CBLake MaterialsConversion price ₩23,839; if all converted, equal to 3.1% of shares outstanding.₩50B
5/13CBAlcheraConversion price ₩2,476; if all converted, equal to 2.4% of shares outstanding.₩2.5B
5/13AmendedHankuk CarbonCapital reduction
5/13AmendedPhionxConvertible bond issue
5/13AmendedSanigenRights offering
5/13HLB PharmaceuticalRights offering
5/13HyperRights offering
5/13Black YAK I&CConvertible bond issue
5/13AmendedMOA Life PlusConvertible bond issue
5/13JS LinkConvertible bond issue
5/13JS LinkConvertible bond issue
5/13AmendedDongsung PharmaceuticalCapital reduction
5/13AmendedMsdiRights offering
5/13AlcheraRights offering
5/13AlcheraRights offering
5/13AmendedKBGConvertible bond issue
5/13AmendedMsdiConvertible bond issue
5/13ARIBIO HoldingsConvertible bond issue
5/13AmendedAptnConvertible bond issue

M&A & spin-offs 11

5/13Korean AIR LinesMerger
5/13HanjinkalMerger
5/13JejuairBusiness transfer
5/13Hankook Tire & TechnologyMerger
5/13Asiana AirlinesMerger
5/13Korean AIR LinesMerger
5/13AmendedMirae Asset Vision Special Purpose Acquisition 7 CompanyMerger
5/13AmendedSGA SolutionsMerger
5/13AmendedLivsMedTangible asset deal
5/13AmendedSynopexMerger
5/13LivsMedTangible asset deal

Exchange actions 5

5/13NHN BugsUnfaithful disclosure
5/13PintelUnfaithful disclosure
5/13HuonsExchange inquiry
5/13Huons GlobalExchange inquiry
5/13Asiana AirlinesTrading halt