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Key filings, April 28, 2026

450 filings · 12 highlights

← April 27, 2026 April 29, 2026 →

ContractKCC Engineering & ConstructionKOSDAQ

Contract value

₩557B

Of revenue

30.4%

Worth 30.4% of last year's revenue, over about 45 months.

2030-03-30 – 2033-12-30

Company filings →Original (Korean) ↗

ContractWoojin I&SKOSPI

Contract value

₩25.6B

Of revenue

15.6%

Worth 15.6% of last year's revenue, over about 50 months.

2026-04-16 – 2030-06-30

Company filings →Original (Korean) ↗

ContractChinhung InternationalKOSPI

Contract value

₩67.5B

Of revenue

11.7%

Worth 11.7% of last year's revenue.

Company filings →Original (Korean) ↗

EarningsSwung to lossJusung EngineeringKOSDAQ

Operating profit

-₩7B

Same quarter last year

₩33.9B

Operating profit: swung to loss (₩33.9B → -₩7B). Revenue ₩54.9B, down 54.6% YoY.

Q1 2026 · Separate

Company filings →Original (Korean) ↗

EarningsSwung to profitHT RoboticsKOSDAQ

Operating profit

₩1.7B

Same quarter last year

-₩607M

Operating profit: swung to profit (-₩607M → ₩1.7B). Revenue ₩33.6B, up 71.5% YoY.

Q1 2026 · Separate

Company filings →Original (Korean) ↗

EarningsSwung to profitBIO Port KoreaKOSDAQ

Operating profit

₩765M

Same quarter last year

-₩20M

Operating profit: swung to profit (-₩20M → ₩765M). Revenue ₩21.4B, up 26.8% YoY.

Q1 2026 · Separate

Company filings →Original (Korean) ↗

5% holderNew 5%Atlas LinkKOSDAQ

Stake

20.20%

Change

+20.20pp

A major holder's stake rose from 0.00% to 20.20%.

Company filings →Original (Korean) ↗

5% holderNew 5%KG Mobility PlatformKOSPI

Stake

19.69%

Change

+19.69pp

A major holder's stake rose from 0.00% to 19.69%.

Company filings →Original (Korean) ↗

5% holderNew 5%Kiwoom Hero No.2 Special Purpose Acquisition CompanyKOSDAQ

Stake

14.86%

Change

+14.86pp

A major holder's stake rose from 0.00% to 14.86% (new report).

Company filings →Original (Korean) ↗

BuybackBuybackSK BioscienceKOSPI

Planned buyback

₩17.1B

391,254 sh

Plans to buy back 391,254 sh of treasury stock, Apr 29 to Jul 28.

Company filings →Original (Korean) ↗

IssuanceCBBitmaxKOSDAQ

Issue size

₩61.6B

If all converted

68.8%

Conversion price ₩2,612; if all converted, equal to 68.8% of shares outstanding.

Company filings →Original (Korean) ↗

IssuanceCBAprogenKOSPI

Issue size

₩12B

If all converted

11.7%

Conversion price ₩4,583; if all converted, equal to 11.7% of shares outstanding.

Company filings →Original (Korean) ↗

Supply contracts 23

4/28AmendedDypnf Worth 79.1% of last year's revenue, over about 19 months.₩114B

4/28AmendedSphere Worth 57.2% of last year's revenue, over about 14 months.₩1.5B

4/28AmendedSecuLetter Worth 56.8% of last year's revenue, over about 13 months.₩801.8M

4/28AmendedUnison Worth 41.8% of last year's revenue, over about 132 months.₩17B

4/28AmendedSphere Worth 40.4% of last year's revenue, over about 11 months.₩1B

4/28AmendedSeojeon Electric Machinery Worth 38.3% of last year's revenue, over about 18 months.₩16.8B

4/28KCC Engineering & Construction Worth 30.4% of last year's revenue, over about 45 months.₩557B

4/28AmendedSphere Worth 20.9% of last year's revenue, over about 5 months.₩535.5M

4/28AmendedSoosan Industries Worth 19.6% of last year's revenue, over about 36 months.₩63.7B

4/28Woojin I&S Worth 15.6% of last year's revenue, over about 50 months.₩25.6B

4/28AmendedCnt85 Worth 14.9% of last year's revenue, over about 26 months.₩7.5B

4/28AmendedTongyang Worth 13.4% of last year's revenue, over about 66 months.₩80.7B

4/28Chinhung International Worth 11.7% of last year's revenue.₩67.5B

4/28Seojin System Worth 11.3% of last year's revenue, over about 9 months.₩121B

4/28Daewoo Engineering & Construction Worth 9.7% of last year's revenue.₩783B

4/28Samho Development Worth 8.5% of last year's revenue, over about 57 months.₩34.8B

4/28S&sys Worth 6.9% of last year's revenue, over about 15 months.₩10B

4/28AmendedHanshin Construction Worth 6.9% of last year's revenue, over about 81 months.₩84.6B

4/28Dongbu Worth 6.3% of last year's revenue.₩111B

4/28Kolon Worth 4.9% of last year's revenue.₩132B

4/28KolonGlobal Worth 4.9% of last year's revenue.₩132B

4/28Hanshin Construction Worth 2.8% of last year's revenue, over about 96 months.₩32.4B

4/28Ylab Single sales/supply contract

Preliminary earnings 24

4/28Swung to lossJusung Engineering Operating profit: swung to loss (₩33.9B → -₩7B). Revenue ₩54.9B, down 54.6% YoY.-₩7B

4/28Swung to profitHT Robotics Operating profit: swung to profit (-₩607M → ₩1.7B). Revenue ₩33.6B, up 71.5% YoY.₩1.7B

4/28Swung to profitBIO Port Korea Operating profit: swung to profit (-₩20M → ₩765M). Revenue ₩21.4B, up 26.8% YoY.₩765M

4/28Hanwha Solutions Operating profit ₩92.6B, up 205.5% YoY. Revenue ₩3.88T, up 25.4% YoY.₩92.6B

4/28Songwon Industrial Operating profit ₩26.6B, up 142.8% YoY. Revenue ₩269B, down 2.4% YoY.₩26.6B

4/28Hansol HomeDe Operating profit ₩2.7B, up 129.1% YoY. Revenue ₩69.1B, down 7% YoY.₩2.7B

4/28LOTTE Fine Chemical Operating profit ₩32.7B, up 73.9% YoY. Revenue ₩511B, up 14.6% YoY.₩32.7B

4/28Daewoo Engineering & Construction Operating profit ₩256B, up 68.9% YoY. Revenue ₩1.95T, down 6% YoY.₩256B

4/28PI Advanced Materials Operating profit ₩14B, up 62.8% YoY. Revenue ₩64.1B, down 0.1% YoY.₩14B

4/28DS Dansuk Operating profit ₩4.4B, down 51.1% YoY. Revenue ₩278B, up 12.1% YoY.₩4.4B

4/28HK inno.N Operating profit ₩33.2B, up 30.8% YoY. Revenue ₩259B, up 4.6% YoY.₩33.2B

4/28iM Financial Group Operating profit ₩24.2B, down 27.1% YoY. Revenue ₩1.66T, up 254% YoY.₩24.2B

4/28Tokai Carbon Korea Operating profit ₩28.6B, up 21.6% YoY. Revenue ₩95.4B, up 21.7% YoY.₩28.6B

4/28HD Hyundai Electric Operating profit ₩258B, up 18.4% YoY. Revenue ₩1.04T, up 2.1% YoY.₩258B

4/28Cosmo Advanced Materials & Technology Operating profit ₩874M, down 16.3% YoY. Revenue ₩123B, up 7.8% YoY.₩874M

4/28Hyundai Engineering & Construction Operating profit ₩181B, down 15.3% YoY. Revenue ₩6.28T, down 15.8% YoY.₩181B

4/28Chips&Media Operating profit ₩181M, down 10.8% YoY. Revenue ₩5.8B, up 7.6% YoY.₩181M

4/28iM Financial Group Operating profit ₩194B, down 7.3% YoY. Revenue ₩3.36T, up 82.9% YoY.₩194B

4/28iM Financial Group Operating profit ₩154B, down 4.3% YoY. Revenue ₩1.23T, up 16.6% YoY.₩154B

4/28Doosan Bobcat Operating profit ₩207B, up 3.5% YoY. Revenue ₩2.25T, up 7.1% YoY.₩207B

4/28Kumho Tire Operating profit ₩147B, up 0.3% YoY. Revenue ₩1.17T, down 3.2% YoY.₩147B

4/28Loss narrowedDoosan Robotics Operating profit: loss narrowed (-₩12.1B → -₩12.1B). Revenue ₩15.3B, up 189.7% YoY.-₩12.1B

4/28Loss widenedSolus Advanced Materials Operating profit: loss widened (-₩15.3B → -₩22B). Revenue ₩193B, up 22.2% YoY.-₩22B

4/28Loss narrowedSamsung SDI Operating profit: loss narrowed (-₩434B → -₩156B). Revenue ₩3.58T, up 12.6% YoY.-₩156B

Insider trades 78

4/28Mirae Asset Securities Insider ownership report

4/28Korea Castiron Pipe IND Insider ownership report

4/28AmendedSoftcen Insider ownership report

4/28Mirae Asset Securities Insider ownership report

4/28MIRAE ASSET Life Insurance Insider ownership report

4/28Mirae Asset Securities Insider ownership report

4/28AmendedDaishin Securities Insider ownership report

4/28Softcen Insider ownership report

4/28Atlas Link Insider ownership report

4/28Hansun Engineering Insider ownership report

4/28Mirae Asset Securities Insider ownership report

4/28Kolmar Korea Insider ownership report

4/28Jeio Insider ownership report

4/28Mirae Asset Securities Insider ownership report

4/28AJU IB Investment Insider ownership report

4/28Mirae Asset Securities Insider ownership report

4/28AJU IB Investment Insider ownership report

4/28Fescaro Insider ownership report

4/28AJU IB Investment Insider ownership report

4/28CJ Logistics Insider ownership report

4/28Kiwoom Hero No.2 Special Purpose Acquisition Company Insider ownership report

4/28d'Alba Global Insider ownership report

4/28Daishin Securities Insider ownership report

4/28Axgate Insider ownership report

4/28Korea Electric Power Insider ownership report

All insider trades →

5% holders 46

4/28AmendedNew 5%The Pinkfong Company A major holder's stake rose from 0.00% to 37.74%.37.74%

4/28New 5%Atlas Link A major holder's stake rose from 0.00% to 20.20%.20.20%

4/28New 5%KG Mobility Platform A major holder's stake rose from 0.00% to 19.69%.19.69%

4/28New 5%Kiwoom Hero No.2 Special Purpose Acquisition Company A major holder's stake rose from 0.00% to 14.86% (new report).14.86%

4/28KG Mobility Platform A major holder's stake fell from 72.19% to 52.50%.52.50%

4/28New 5%Nexa Dynamics A major holder's stake rose from 0.00% to 5.62% (conversion/exercise).5.62%

4/28AmendedHanWool & Jeju A major holder's stake rose from 46.98% to 57.71%.57.71%

4/28Dasan DMC A major holder's stake fell from 76.06% to 66.18% (stock option).66.18%

4/28Below 5%GMI Venture A major holder's stake fell from 8.94% to 0.00%.0.00%

4/28Blitzway Entertainment A major holder's stake rose from 48.32% to 56.60%.56.60%

4/28Below 5%Vitzrocell A major holder's stake fell from 8.44% to 4.83%.4.83%

4/28Below 5%Daiyang Metal A major holder's stake fell from 3.89% to 0.32%.0.32%

4/28AmendedPIM Korea A major holder's stake fell from 48.85% to 46.19% (open-market sale).46.19%

4/28Hanla IMS A major holder's stake fell from 57.78% to 55.47% (open-market sale).55.47%

4/28Saramin A major holder's stake rose from 9.25% to 10.87%.10.87%

4/28DYC A major holder's stake fell from 12.72% to 11.13%.11.13%

4/28AmendedContec A major holder's stake fell from 31.07% to 29.50% (stock option).29.50%

4/28Below 5%DaejooElectronicMaterials A major holder's stake fell from 6.24% to 4.75% (open-market sale).4.75%

4/28Neopharm A major holder's stake rose from 7.26% to 8.35%.8.35%

4/28EugeneTechnology A major holder's stake rose from 5.44% to 6.48%.6.48%

4/28InBody A major holder's stake fell from 6.68% to 5.67%.5.67%

4/28Below 5%Zaram Technology A major holder's stake fell from 5.10% to 4.60% (conversion/exercise).4.60%

4/28UbiVelox A major holder's stake rose from 29.66% to 30.04%.30.04%

4/28Kyungbang A major holder's stake rose from 55.47% to 55.56% (pledge).55.56%

4/28Kolmar Holdings A major holder's stake rose from 48.43% to 48.47% (open-market sale).48.47%

4/28Kolmar Korea A major holder's stake fell from 26.56% to 26.55% (open-market sale).26.55%

4/28Mecaro A major holder's stake fell from 53.23% to 53.22% (open-market sale).53.22%

4/28Sungho Electronics A major holder's stake rose from 66.07% to 66.08% (open-market buy).66.08%

4/28Fine Semitech A major holder's stake rose from 25.12% to 25.13%.25.13%

4/28Hana Materials A major holder's stake rose from 44.87% to 44.87% (pledge).44.87%

4/28Pond Group A major holder's stake rose from 76.59% to 76.59% (pledge).76.59%

4/28Below 5%Oneul E&M A major holder's stake rose from 0.00% to 0.00% (conversion/exercise).0.00%

4/28TYM A major holder's stake rose from 30.69% to 30.69% (share lending).30.69%

4/28KG Mobility Platform A major holder's stake rose from 72.51% to 72.51%.72.51%

4/28Aekyung Chemical A major holder's stake rose from 62.39% to 62.39% (pledge).62.39%

4/28InBody A major holder's stake rose from 29.09% to 29.09% (pledge).29.09%

4/28Hansae Yes24 Holdings A major holder's stake rose from 79.68% to 79.68% (share lending).79.68%

4/28Medy-Tox A major holder's stake rose from 18.63% to 18.63%.18.63%

4/28Sebitchem Report of 5%+ holding

4/28Huneed Technologies A major holder's stake rose from 22.83% to 22.83%.22.83%

All 5% holders →

Buybacks 7

4/28TrustDaehan Shipbuilding Ended a share buyback trust contract.₩40B

4/28BuybackSK Bioscience Plans to buy back 391,254 sh of treasury stock, Apr 29 to Jul 28.₩17.1B

4/28DisposalSK Securities Plans to dispose of 301,501 sh of treasury stock, May 4 to May 4.₩1.5B

4/28DisposalJC Chemical Plans to dispose of 20,000 sh of treasury stock, Apr 29 to Apr 30.₩95.2M

4/28Wonik Cube Share cancellation

4/28Yeonghwa Metal Share cancellation

4/28Daehan Shipbuilding Share cancellation

Share issues & bonds 19

4/28CBBitmax Conversion price ₩2,612; if all converted, equal to 68.8% of shares outstanding.₩61.6B

4/28AmendedRights offeringMegatouch Issuing 3,115,362 sh of new shares, equal to 12% of existing shares.₩11.4B

4/28CBAprogen Conversion price ₩4,583; if all converted, equal to 11.7% of shares outstanding.₩12B

4/28Rights offeringYounghwa Tech Issuing 177,320 sh of new shares, equal to 1.7% of existing shares.₩2B

4/28Aprogen Rights offering

4/28AmendedLotte Capital reduction

4/28Solus Advanced Materials Rights offering

4/28AmendedLotte Wellfood Capital reduction

4/28Aptocrom Rights offering

4/28AmendedMsdi Rights offering

4/28AmendedRootK Convertible bond issue

4/28AmendedMobile Appliance Convertible bond issue

4/28AmendedXplus Rights offering

4/28Sang-A Frontec Convertible bond issue

4/28AmendedMobile Appliance Rights offering

4/28Bitmax Rights offering

4/28U.i.display Rights offering

4/28AmendedAlpha AI Convertible bond issue

M&A & spin-offs 7

4/28LS THiRA-UTECH A ₩33.8B deal, equal to 30.3% of total assets.₩33.8B

4/28Doosan Tesna A ₩191B deal, equal to 27.1% of total assets.₩191B

4/28Revu A ₩16.7B deal, equal to 18.7% of total assets.₩16.7B

4/28AmendedDoosan Tesna Tangible asset deal

4/28Commax Merger

4/28AmendedNRobotics Merger

4/28AmendedTovis Spin-off / split

Key filings, April 28, 2026

Supply contracts 23

Preliminary earnings 24

Insider trades 78

5% holders 46

Buybacks 7

Share issues & bonds 19

M&A & spin-offs 7

Exchange actions 27