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Key filings, October 21, 2026

383 filings · 12 highlights
← October 20, 2026October 22, 2026 →
EarningsSwung to lossUnidKOSPI
Operating profit
-₩2.1B
Same quarter last year
₩18.8B

Operating profit: swung to loss (₩18.8B → -₩2.1B). Revenue ₩378B, up 14.9% YoY.

Q3 2026 · Separate
Company filings →Original (Korean) ↗

Supply contracts 29

10/21PhilenergyWorth 259.3% of last year's revenue, over about 5 months.₩86.1B
10/21Vina TechWorth 145.3% of last year's revenue, over about 14 months.₩119B
10/21AmendedSeoho ElectricWorth 93.1% of last year's revenue, over about 20 months.₩109B
10/21AmendedSeohanWorth 20.1% of last year's revenue, over about 27 months.₩130B
10/21SeohanWorth 20.1% of last year's revenue, over about 27 months.₩130B
10/21HaeinWorth 19.2% of last year's revenue, over about 13 months.₩46.4B
10/21AmendedGeumhwa PSCWorth 17.9% of last year's revenue, over about 68 months.₩60.9B
10/21AmendedCharm EngineeringWorth 17.3% of last year's revenue, over about 9 months.₩10.4B
10/21AmendedGigaVisWorth 16.8% of last year's revenue, over about 24 months.₩15.4B
10/21AmendedP&S RoboticsWorth 16.6% of last year's revenue, over about 5 months.₩1.3B
10/21InnosimulationWorth 15% of last year's revenue, over about 29 months.₩2.1B
10/21UniTestWorth 14.7% of last year's revenue, over about 4 months.₩16.2B
10/21MOTWorth 13.4% of last year's revenue, over about 6 months.₩10.1B
10/21AmendedGeumhwa PSCWorth 13.1% of last year's revenue, over about 73 months.₩44.1B
10/21WaviceWorth 12.7% of last year's revenue, over about 32 months.₩5.2B
10/21AmendedGigaVisWorth 12.5% of last year's revenue, over about 23 months.₩11.4B
10/21AmendedS-EnergyWorth 10.8% of last year's revenue, over about 7 months.₩11B
10/21AmendedNamkwang Engineering & ConstructionWorth 10.5% of last year's revenue, over about 34 months.₩53.1B
10/21LasersselWorth 9.9% of last year's revenue, over about 6 months.₩462.1M
10/21Kye-Ryong Construction IndustrialWorth 8% of last year's revenue, over about 31 months.₩230B
10/21AmendedSamsung C&TWorth 7% of last year's revenue, over about 45 months.₩2.16T
10/21WotWorth 5.7% of last year's revenue, over about 4 months.₩859.5M
10/21AmendedMiraeWorth 5.3% of last year's revenue, over about 5 months.₩2.7B
10/21AmendedHD HyundaiWorth 5.3% of last year's revenue, over about 23 months.₩318B
10/21AmendedHD Korea Shipbuilding & Offshore EngineeringWorth 5.3% of last year's revenue, over about 23 months.₩318B
10/21KEPCO Plant Service & EngineeringWorth 5.3% of last year's revenue, over about 14 months.₩83.6B
10/21Hyundai-RotemWorth 4.1% of last year's revenue, over about 79 months.₩239B
10/21CJ LogisticsWorth 2.6% of last year's revenue, over about 38 months.₩315B
10/21Korea Engineering ConsultantsSupply contract terminated

Preliminary earnings 6

10/21Swung to lossUnidOperating profit: swung to loss (₩18.8B → -₩2.1B). Revenue ₩378B, up 14.9% YoY.-₩2.1B
10/21Swung to profitLaonPeopleOperating profit: swung to profit (-₩2.6B → ₩1.2B). Revenue ₩3.7B, up 58.6% YoY.₩1.2B
10/21LS Marine SolutionOperating profit ₩6.9B, up 234.7% YoY. Revenue ₩73.6B, down 4.3% YoY.₩6.9B
10/21FnGuideOperating profit ₩7.7B, up 187.9% YoY. Revenue ₩14.8B, up 76.5% YoY.₩7.7B
10/21LS ElectricOperating profit ₩234B, up 131.7% YoY. Revenue ₩1.88T, up 54.4% YoY.₩234B
10/21Samsung BiologicsOperating profit ₩640B, up 1% YoY. Revenue ₩1.49T, up 18.5% YoY.₩640B

Insider trades 54

10/21BuyKoas10%+ shareholder bought 1,457,989 sh on the market at an average ₩1,989, Jul 31–Oct 19.₩2.9B
10/21BuyKginicisDirector bought 100,000 sh on the market at an average ₩9,539, Oct 19–20.₩953.9M
10/21BuyGamsungCEO bought 155,010 sh on the market at an average ₩3,452, Oct 19.₩535.1M
10/21BuySamyoung S&CDirector bought 35,561 sh on the market at an average ₩3,970, Oct 14–23.₩141.2M
10/21BuySewoo Global Co,10%+ shareholder bought 108,200 sh on the market at an average ₩1,173, Oct 16–19.₩127M
10/21BuyNanocmsAn insider bought 30,617 sh on the market at an average ₩3,960, Oct 19–23.₩121.2M
10/21SaleNaverAn insider sold 660 sh on the market at an average ₩181,235, Oct 16–20.₩119.6M
10/21BuyKSS Line10%+ shareholder bought 9,490 sh on the market at an average ₩12,108, Oct 21–22.₩114.9M
10/21SaleRingNetDirector sold 10,000 sh on the market at an average ₩4,248, Oct 20.₩42.5M
10/21BuySmart Radar SystemCEO bought 7,400 sh on the market at an average ₩3,388, Oct 16–20.₩25.1M
10/21BuyAnapassCEO bought 2,195 sh on the market at an average ₩11,383, Oct 19.₩25M
10/21BuyKyungdongPharmChairman bought 4,700 sh on the market at an average ₩4,989, Oct 15–21.₩23.4M
10/21BuyJincostechDirector bought 1,339 sh on the market at an average ₩12,926, Aug 22–Oct 19.₩17.3M
10/21BuyOE SolutionsExecutive bought 590 sh on the market at an average ₩25,348, Oct 15.₩15M
10/21BuyLDTDirector bought 5,150 sh on the market at an average ₩2,387, Aug 18–Oct 20.₩12.3M
10/21BuyWonik CubeExecutive bought 10,000 sh on the market at an average ₩1,163, Oct 15–20.₩11.6M
10/21BuyPosco Future MExecutive bought 62 sh on the market at an average ₩164,561, Jul 8–Oct 20.₩10.2M
10/21BuyPosco Future MExecutive bought 61 sh on the market at an average ₩165,358, Jul 3–Oct 19.₩10.1M
10/21BuyPosco Future MExecutive bought 57 sh on the market at an average ₩175,700, Aug 18–Oct 19.₩10M
10/21BuyMirae Asset SecuritiesExecutive bought 1,000 sh on the market at an average ₩8,531, Oct 20.₩8.5M
10/21BuySmart Radar SystemDirector bought 2,313 sh on the market at an average ₩3,475, Oct 19.₩8M
10/21AmendedBuyArootDirector bought 1,060 sh on the market at an average ₩6,331, Jun 5.₩6.7M
10/21BuyBolakDirector bought 5,000 sh on the market at an average ₩971, Oct 21.₩4.9M
10/21AmendedBuyArootDirector bought 639 sh on the market at an average ₩5,212, Jul 3.₩3.3M
10/21Other changeAscendio10%+ shareholder's holding rose by 2,442,776 sh (rights offering).+2,442,776 sh
10/21Other changeHigen RNMDirector's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeHigen RNMDirector's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeHigen RNMExecutive's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeHigen RNMExecutive's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeHigen RNMExecutive's holding rose by 2,000 sh (stock option).+2,000 sh
10/21Other changeHigen RNMExecutive's holding rose by 2,000 sh (stock option).+2,000 sh
10/21Other changeHigen RNMPresident's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeHigen RNMPresident's holding rose by 4,000 sh (stock option).+4,000 sh
10/21Other changeBigwave RoboticsExecutive's holding rose by 1,842 sh (stock option).+1,842 sh
10/21Other changeJincostechDirector's holding rose by 0 sh (new report).0 sh
10/21Other changeCurocellExecutive's holding rose by 2,000 sh (stock option).+2,000 sh
10/21Other changeKNW10%+ shareholder's holding fell by 271,732 sh (other change).-271,732 sh
10/21Other changeMelconAn insider's holding rose by 5,796,520 sh (new report).+5,796,520 sh
10/21Other changeNaverAn insider's holding rose by 1,000 sh (stock option).+1,000 sh
10/21Other changeJeongmoon InformationAn insider's holding fell by 9,203,734 sh (share consolidation/split).-9,203,734 sh
All insider trades →

5% holders 50

10/21New 5%MelconA major holder's stake rose from 0.00% to 65.58%.65.58%
10/21AmendedNew 5%SimplatformA major holder's stake rose from 0.00% to 38.90%.38.90%
10/21New 5%AscendioA major holder's stake rose from 0.00% to 23.71% (rights offering).23.71%
10/21New 5%Mgen SolutionsA major holder's stake rose from 0.00% to 12.40% (new report).12.40%
10/21New 5%MelconA major holder's stake rose from 0.00% to 5.65%.5.65%
10/21New 5%AscendioA major holder's stake rose from 0.00% to 5.46% (rights offering).5.46%
10/21New 5%EliceA major holder's stake rose from 0.00% to 5.21%.5.21%
10/21New 5%Nepes ArkA major holder's stake rose from 0.00% to 5.08% (new report).5.08%
10/21Below 5%MelconA major holder's stake fell from 5.65% to 0.00%.0.00%
10/21AmendedJincostechA major holder's stake fell from 39.14% to 34.07% (rights offering).34.07%
10/21OpenknowlA major holder's stake fell from 11.51% to 8.53%.8.53%
10/21AmendedBarunson Entertainment & ArtsA major holder's stake rose from 33.07% to 35.81% (open-market buy).35.81%
10/21AmendedBarunson Entertainment & ArtsA major holder's stake rose from 35.81% to 38.06% (open-market buy).38.06%
10/21SimplatformA major holder's stake fell from 38.90% to 37.38% (open-market sale).37.38%
10/21Kyobo 19 Special Purpose Acquisition CompanyA major holder's stake fell from 9.69% to 8.52%.8.52%
10/21Below 5%cooconA major holder's stake fell from 5.00% to 4.08% (open-market sale).4.08%
10/21AmendedMekicsA major holder's stake fell from 25.12% to 24.35% (open-market buy).24.35%
10/21SM EntertainmentA major holder's stake rose from 7.37% to 8.05% (related-party change).8.05%
10/21AmendedArootA major holder's stake rose from 18.47% to 19.10% (open-market buy).19.10%
10/21Jeongmoon InformationA major holder's stake rose from 47.40% to 47.92% (open-market buy).47.92%
10/21Below 5%InnoaxA major holder's stake fell from 5.51% to 4.99%.4.99%
10/21KoasA major holder's stake rose from 9.65% to 10.08%.10.08%
10/21KNWA major holder's stake fell from 69.18% to 68.80% (conversion/exercise).68.80%
10/21KginicisA major holder's stake rose from 42.19% to 42.56%.42.56%
10/21Insung InformationA major holder's stake rose from 23.73% to 23.98% (open-market buy).23.98%
10/21DavolinkA major holder's stake fell from 20.14% to 19.91%.19.91%
10/21AmendedArootA major holder's stake rose from 23.78% to 23.97% (open-market buy).23.97%
10/21GamsungA major holder's stake rose from 30.83% to 31.00% (open-market buy).31.00%
10/21HLB TherapeuticsA major holder's stake rose from 20.05% to 20.14% (open-market buy).20.14%
10/21AmendedArootA major holder's stake rose from 24.06% to 24.12% (open-market buy).24.12%
10/21AmendedArootA major holder's stake rose from 24.00% to 24.06% (open-market buy).24.06%
10/21Orum TherapeuticsA major holder's stake fell from 15.85% to 15.79% (open-market buy).15.79%
10/21ArootA major holder's stake rose from 24.12% to 24.15% (open-market buy).24.15%
10/21AmendedArootA major holder's stake rose from 23.97% to 24.00% (open-market buy).24.00%
10/21Bookook SecuritiesA major holder's stake rose from 35.39% to 35.41% (related-party change).35.41%
10/21InveniA major holder's stake rose from 48.09% to 48.11% (related-party change).48.11%
10/21SFA EngineeringA major holder's stake fell from 43.45% to 43.44% (share lending).43.44%
10/21AmendedMekicsA major holder's stake rose from 25.11% to 25.12%.25.12%
10/21UracleA major holder's stake rose from 33.14% to 33.15% (open-market buy).33.15%
10/21PavonineA major holder's stake rose from 33.23% to 33.23% (pledge).33.23%
All 5% holders →

Buybacks 3

10/21TrustMegaStudyEduSigned a ₩10B trust contract to buy back shares.₩10B
10/21TrustCell Bio Human TechEnded a share buyback trust contract.₩1B
10/21McnexShare cancellation

Share issues & bonds 14

10/21CBLumens BiosConversion price ₩1,142; if all converted, equal to 37.9% of shares outstanding.₩18B
10/21AmendedRights offeringBK HoldingsIssuing 7,196,000 sh of new shares, equal to 23.6% of existing shares.₩4.8B
10/21CBSKAI worldwideConversion price ₩1,602; if all converted, equal to 20.4% of shares outstanding.₩22.8B
10/21CBRftechConversion price ₩6,485; if all converted, equal to 17% of shares outstanding.₩10B
10/21CBADforusConversion price ₩6,894; if all converted, equal to 16.9% of shares outstanding.₩6B
10/21Rights offeringRftechIssuing 1,470,587 sh of new shares, equal to 16.3% of existing shares.₩9B
10/21CBRftechConversion price ₩6,485; if all converted, equal to 8.5% of shares outstanding.₩5B
10/21AmendedRights offeringOneul E&MIssuing 326,796 sh of new shares, equal to 1.3% of existing shares.₩1000M
10/21Rights offeringUnion Korea PharmIssuing 365,003 sh of new shares, equal to 0.5% of existing shares.0.5%
10/21Capital reductionUnion Korea PharmCapital reduction of 0.3%.0.3%
10/21ArootRights offering
10/21AmendedBK HoldingsRights offering
10/21AmendedNanoTIMConvertible bond issue
10/21AmendedKoasConvertible bond issue

M&A & spin-offs 4

10/21SKAI worldwideA ₩25.4B deal, equal to 65.9% of total assets.₩25.4B
10/21Ryuk-Il C&sA ₩25B deal, equal to 44.6% of total assets.₩25B
10/21AmendedTera ScienceStake acquisition/disposal
10/21AmendedKyungnongMerger

Exchange actions 18

10/21Alpha AITrading halt
10/21Alpha AIExchange
10/21Micro DigitalExchange
10/21Alpha AIUnfaithful disclosure
10/21CrowdWorksUnfaithful disclosure
10/21Micro DigitalUnfaithful disclosure
10/21Huons GlobalUnfaithful disclosure
10/21Micro DigitalTrading halt
10/21MoadataUnfaithful disclosure
10/21Micro DigitalExchange
10/21HuonsUnfaithful disclosure
10/21FoodnamooExchange inquiry
10/21Nexa DynamicsUnfaithful disclosure
10/21ICHTrading halt
10/21GiantstepExchange inquiry
10/21Vina TechTrading halt
10/21PhilenergyTrading halt
10/21MetacareAdministrative issue