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Key filings, September 28, 2026

354 filings · 12 highlights
← September 23, 2026September 29, 2026 →

Supply contracts 23

9/28MiraeWorth 104.7% of last year's revenue, over about 8 months.₩53.1B
9/28AmendedSFA NexelWorth 55.7% of last year's revenue, over about 48 months.₩73.9B
9/28AmendedKorea Electronic Power Industrial DevelopmentWorth 34% of last year's revenue, over about 83 months.₩134B
9/28HDC HoldingsWorth 31.3% of last year's revenue, over about 51 months.₩1.30T
9/28Ipark Hyundai Development CompanyWorth 31.3% of last year's revenue, over about 51 months.₩1.30T
9/28TKG HuchemsWorth 30% of last year's revenue, over about 120 months.₩338B
9/28RF MaterialsWorth 20.7% of last year's revenue, over about 7 months.₩13.2B
9/28Teraview HoldingsWorth 17.4% of last year's revenue, over about 4 months.₩1.4B
9/28NRBWorth 14.5% of last year's revenue, over about 10 months.₩8.6B
9/28AmendedSK D&DWorth 14.5% of last year's revenue, over about 3 months.₩64.5B
9/28IVIM TechnologyWorth 13.3% of last year's revenue, over about 2 months.₩579.9M
9/28IVIM TechnologyWorth 11.2% of last year's revenue, over about 15 months.₩491.6M
9/28AmendedTSIWorth 11% of last year's revenue, over about 51 months.₩7.4B
9/28AmendedNeosemWorth 10.8% of last year's revenue, over about 5 months.₩6.9B
9/28AmendedInnometryWorth 10.3% of last year's revenue, over about 17 months.₩5.5B
9/28AmendedHansung CleantechWorth 10% of last year's revenue, over about 15 months.₩19.9B
9/28SKWorth 5.6% of last year's revenue, over about 12 months.₩2.21T
9/28SK InnovationWorth 5.6% of last year's revenue, over about 12 months.₩2.21T
9/28Hanwha OceanWorth 5.3% of last year's revenue, over about 37 months.₩680B
9/28NRBWorth 5.1% of last year's revenue, over about 6 months.₩3B
9/28AmendedNeosemWorth 4.5% of last year's revenue, over about 6 months.₩4.8B
9/28Harim HoldingsWorth 2.7% of last year's revenue, over about 36 months.₩148B
9/28Pan OceanWorth 2.7% of last year's revenue, over about 36 months.₩148B

Preliminary earnings 1

9/28Korea District HeatingPreliminary operating results

Insider trades 22

9/28BuyNH Investment & Securities10%+ shareholder bought 140,000 sh on the market at an average ₩26,032, Sep 22–28.₩3.6B
9/28BuyThinkwareSystems10%+ shareholder bought 70,326 sh on the market at an average ₩6,599, Sep 17–23.₩464.1M
9/28SaleTaewonmulsan10%+ shareholder sold 86,004 sh on the market at an average ₩2,985, Jul 2–Sep 28.₩256.7M
9/28BuyWelcron CompanyAn insider bought 109,873 sh on the market at an average ₩1,242, Sep 17–29.₩136.5M
9/28BuyQualitas SemiconductorExecutive bought 11,480 sh on the market at an average ₩10,788, Sep 23.₩123.8M
9/28BuyMH MaterialsPresident bought 29,590 sh on the market at an average ₩3,879, Sep 22–23.₩114.8M
9/28BuySDN CompanyDirector bought 18,260 sh on the market at an average ₩5,473, Sep 18.₩99.9M
9/28BuyClean & Science10%+ shareholder bought 26,403 sh on the market at an average ₩3,252, Sep 18–22.₩85.9M
9/28BuyCarelabs10%+ shareholder bought 41,474 sh on the market at an average ₩1,969, Sep 17–28.₩81.7M
9/28BuyClean & ScienceAn insider bought 14,187 sh on the market at an average ₩3,200, Sep 28.₩45.4M
9/28Other changeJetemaDirector's holding rose by 50,000 sh (other change).+50,000 sh
9/28Other changeJetemaCEO's holding fell by 50,000 sh (other change).-50,000 sh
9/28Other changeWing's Foot10%+ shareholder's holding fell by 1,691,125 sh (share consolidation/split).-1,691,125 sh
9/28Other changeSDN CompanyAuditor's holding fell by 6,840 sh (share consolidation/split).-6,840 sh
9/28Other changeSDN CompanyCEO's holding fell by 152,159 sh (share consolidation/split).-152,159 sh
9/28Other changeSDN CompanyCEO's holding fell by 342,906 sh (share consolidation/split).-342,906 sh
9/28Other changeSDN CompanyDirector's holding fell by 3,899,628 sh (share consolidation/split).-3,899,628 sh
9/28Other changeMiwon Commercial10%+ shareholder's holding rose by 847 sh (other change).+847 sh
9/28Other changeHLB PharmaceuticalCEO's holding rose by 0 sh (other change, rights offering).0 sh
9/28Other changeDuoback10%+ shareholder's holding rose by 4,351,102 sh (inheritance).+4,351,102 sh
9/28Other changeDuobackCEO's holding fell by 4,351,102 sh (inheritance).-4,351,102 sh
9/28BuyMyungmoon PharmExecutive bought 13,000 sh on the market, Sep 28.₩0

5% holders 38

9/28New 5%DuobackA major holder's stake rose from 0.00% to 44.10% (inheritance).44.10%
9/28New 5%CSA CosmicA major holder's stake rose from 0.00% to 37.54% (conversion/exercise).37.54%
9/28Below 5%DuobackA major holder's stake fell from 43.59% to 0.00% (inheritance).0.00%
9/28New 5%SebitchemA major holder's stake rose from 0.00% to 9.72% (pledge).9.72%
9/28New 5%Jeil TechnosA major holder's stake rose from 0.00% to 5.53% (open-market buy).5.53%
9/28HLB PharmaceuticalA major holder's stake fell from 24.31% to 18.97% (rights offering).18.97%
9/28AmendedBarunson Entertainment & ArtsA major holder's stake rose from 28.84% to 31.84%.31.84%
9/28GaeasoftA major holder's stake rose from 11.38% to 13.80%.13.80%
9/28Clean & ScienceA major holder's stake rose from 33.98% to 35.37% (open-market buy).35.37%
9/28Below 5%Korea No.15 Special Purpose AcquisitionA major holder's stake fell from 5.23% to 3.84% (open-market sale).3.84%
9/28Mirae Asset Venture InvestmentA major holder's stake rose from 68.36% to 69.65% (related-party change).69.65%
9/28Barunson Entertainment & ArtsA major holder's stake rose from 31.84% to 33.07% (related-party change).33.07%
9/28TaewonmulsanA major holder's stake fell from 11.15% to 10.02% (open-market sale).10.02%
9/28Welcron CompanyA major holder's stake rose from 22.02% to 22.83% (related-party change).22.83%
9/28SDN CompanyA major holder's stake rose from 13.10% to 13.81% (open-market buy).13.81%
9/28ThinkwareSystemsA major holder's stake rose from 43.09% to 43.72% (open-market buy).43.72%
9/28RfhicA major holder's stake fell from 33.71% to 33.08% (open-market sale).33.08%
9/28Below 5%TomatosystemA major holder's stake fell from 5.61% to 4.99% (open-market sale).4.99%
9/28Reyon PharmaceuticalA major holder's stake fell from 54.37% to 53.84% (related-party change).53.84%
9/28Great New wave ComingA major holder's stake rose from 73.95% to 74.28% (open-market buy).74.28%
9/28AprilBioA major holder's stake fell from 41.58% to 41.30% (related-party change).41.30%
9/28CaregenA major holder's stake rose from 64.48% to 64.49%.64.49%
9/28Dx & VxA major holder's stake rose from 62.40% to 62.40%.62.40%
9/28Castec KoreaReport of 5%+ holding
9/28HansaeA major holder's stake rose from 64.75% to 64.75% (pledge).64.75%
9/28Hansae Yes24 HoldingsA major holder's stake rose from 79.68% to 79.68% (pledge).79.68%
9/28Woosung MaterialsA major holder's stake rose from 19.17% to 19.17% (pledge).19.17%
9/28RaontechA major holder's stake rose from 27.56% to 27.56% (pledge).27.56%
9/28CosmochemicalA major holder's stake rose from 30.56% to 30.56% (pledge).30.56%
9/28HanWool SemiconductorA major holder's stake rose from 32.08% to 32.08% (pledge).32.08%
9/28LogenA major holder's stake rose from 67.75% to 67.75% (share lending).67.75%
9/28EcoproA major holder's stake rose from 25.53% to 25.53% (pledge).25.53%
9/28CreoSGA major holder's stake rose from 44.09% to 44.09%.44.09%
9/28Daehan SteelA major holder's stake rose from 52.75% to 52.75% (pledge).52.75%
9/28Cosmo Advanced Materials & TechnologyA major holder's stake rose from 30.80% to 30.80% (pledge).30.80%
9/28Samick Musical InstrumentsA major holder's stake rose from 47.05% to 47.05% (pledge).47.05%
9/28FoodwellA major holder's stake rose from 51.74% to 51.74% (pledge).51.74%
9/28Fine SemitechA major holder's stake rose from 25.13% to 25.13% (share lending).25.13%

Buybacks 13

9/28BuybackHanwha OceanPlans to buy back 421,907 sh of treasury stock, Sep 29 to Dec 28.₩33.6B
9/28Trustd'Alba GlobalSigned a ₩15B trust contract to buy back shares.₩15B
9/28TrustChips&MediaSigned a ₩10B trust contract to buy back shares.₩10B
9/28TrustFnGuideSigned a ₩5B trust contract to buy back shares.₩5B
9/28DisposalFine SemitechPlans to dispose of 149,614 sh of treasury stock, Sep 29 to Sep 30.₩4.7B
9/28BuybackClean & SciencePlans to buy back 313,479 sh of treasury stock, Sep 29 to Dec 28.₩1B
9/28FnGuideShare cancellation
9/28Chips&MediaShare cancellation
9/28Neo CremarShare cancellation
9/28Yeonghwa MetalShare cancellation
9/28SNT HoldingsShare cancellation
9/28SNT MotivShare cancellation
9/28SNT HoldingsShare cancellation

Share issues & bonds 7

9/28AmendedRights offeringJincostechIssuing 852,000 sh of new shares, equal to 29.5% of existing shares.₩20.1B
9/28CBFingerConversion price ₩11,904; if all converted, equal to 9% of shares outstanding.₩15B
9/28CrowdWorksRights offering
9/28AmendedFingerConvertible bond issue
9/28AmendedAribiolabConvertible bond issue
9/28AmendedMOA Life PlusRights offering
9/28AmendedMoadataRights offering

M&A & spin-offs 2

9/28Digital Graphics InA ₩16.5B deal, equal to 37.7% of total assets.₩16.5B
9/28AmendedCosmecca KoreaMerger

Exchange actions 20

9/28Hanwha Plus No 5 Special Purpose Acquisition CompanyTrading halt
9/28IBKS No.24 Special Purpose Acquisition CompanyTrading halt
9/28IBKS No.25 Special Purpose Acquisition CompanyTrading halt
9/28Shinhan 12th Special Purpose Acquisition CompanyAdministrative issue
9/28AmicogenUnfaithful disclosure
9/28PhionxExchange
9/28PhionxExchange inquiry
9/28PhionxTrading halt
9/28Dragonfly GFExchange
9/28SAMBO IndustrialAdministrative issue
9/28Yujin TechnologyExchange
9/28ShaperonTrading halt
9/28CMG PharmaceuticalSpin-off / split
9/28MoadataAdministrative issue
9/28PhionxExchange inquiry
9/28Seoul Food INDInvestment caution
9/28SH Energy & ChemicalInvestment caution
9/28SH Energy & ChemicalExchange inquiry
9/28SG GlobalAdministrative issue
9/28SNT MotivTrading halt