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Key filings, April 3, 2026

464 filings · 6 highlights

← April 2, 2026 April 6, 2026 →

ContractSecuLetterKOSDAQ

Contract value

₩801.8M

Of revenue

56.8%

Worth 56.8% of last year's revenue.

Company filings →Original (Korean) ↗

ContractAlphachipsKOSDAQ

Contract value

₩23.9B

Of revenue

29.1%

Worth 29.1% of last year's revenue, over about 9 months.

2026-04-02 – 2026-12-31

Company filings →Original (Korean) ↗

ContractSTrafficKOSDAQ

Contract value

₩35.6B

Of revenue

21.2%

Worth 21.2% of last year's revenue, over about 24 months.

2026-04-02 – 2028-03-31

Company filings →Original (Korean) ↗

5% holderNew 5%Jeil TechnosKOSDAQ

Stake

44.92%

Change

+44.92pp

A major holder's stake rose from 0.00% to 44.92% (gift).

Company filings →Original (Korean) ↗

5% holderBelow 5%Jeil TechnosKOSDAQ

Stake

0.00%

Change

-44.65pp

A major holder's stake fell from 44.65% to 0.00% (gift).

Company filings →Original (Korean) ↗

5% holderNew 5%B2EnKOSDAQ

Stake

16.11%

Change

+16.11pp

A major holder's stake rose from 0.00% to 16.11%.

Company filings →Original (Korean) ↗

Supply contracts 22

4/3SecuLetter Worth 56.8% of last year's revenue.₩801.8M

4/3AmendedSK Discovery Worth 36.7% of last year's revenue, over about 51 months.₩39.4B

4/3Alphachips Worth 29.1% of last year's revenue, over about 9 months.₩23.9B

4/3AmendedCnt85 Worth 28.2% of last year's revenue, over about 10 months.₩18.9B

4/3AmendedFlitto Worth 28% of last year's revenue, over about 13 months.₩5.7B

4/3STraffic Worth 21.2% of last year's revenue, over about 24 months.₩35.6B

4/3AmendedLaserssel Worth 18.8% of last year's revenue, over about 9 months.₩753M

4/3Flitto Worth 10.8% of last year's revenue, over about 13 months.₩3.9B

4/3SK Discovery Worth 8.4% of last year's revenue, over about 45 months.₩18.4B

4/3AmendedSamil C&S Worth 7.8% of last year's revenue, over about 90 months.₩17.1B

4/3Neosem Worth 7.3% of last year's revenue, over about 8 months.₩4.7B

4/3Samho Development Worth 6.7% of last year's revenue, over about 31 months.₩27.6B

4/3Daewoo Engineering & Construction Worth 5.1% of last year's revenue, over about 42 months.₩414B

4/3HD Hyundai Worth 4.3% of last year's revenue, over about 36 months.₩350B

4/3HD Korea Shipbuilding & Offshore Engineering Worth 4.3% of last year's revenue, over about 36 months.₩350B

4/3HD Korea Shipbuilding & Offshore Engineering Worth 3.5% of last year's revenue, over about 38 months.₩612B

4/3HD Hyundai Heavy Industries Worth 3.5% of last year's revenue, over about 38 months.₩612B

4/3Xi S&D Worth 3.4% of last year's revenue.₩46.7B

4/3HD Hyundai Heavy Industries Worth 1.4% of last year's revenue, over about 27 months.₩239B

4/3JAS Robotics Supply contract terminated

4/3Kolon Supply contract terminated

4/3KolonGlobal Supply contract terminated

Insider trades 100

4/3Simpac Insider ownership report

4/3Cas Insider ownership report

4/3Mirae Asset Securities Insider ownership report

4/3Jetema Insider ownership report

4/3Philenergy Insider ownership report

4/3Dowooinsys Insider ownership report

4/3Philenergy Insider ownership report

4/3Yuanta Securities Korea Insider ownership report

4/3Philenergy Insider ownership report

4/3Kumho Electric Insider ownership report

4/3Philoptics Insider ownership report

4/3Philenergy Insider ownership report

4/3Hyundai Movex Insider ownership report

4/3Philoptics Insider ownership report

4/3Philenergy Insider ownership report

4/3Jeil Technos Insider ownership report

4/3Philenergy Insider ownership report

4/3Hanwha Investment&securities Insider ownership report

4/3Hpsp Insider ownership report

4/3Hanmi Science Insider ownership report

4/3Samsung Electronics Co,Insider ownership report

4/3Kt&g Insider ownership report

4/3KIA Insider ownership report

4/3HVM Insider ownership report

4/3IL Dong Pharmaceutical Insider ownership report

4/3AmendedAroot Insider ownership report

4/3Lunit Insider ownership report

4/3GC MediAI Insider ownership report

4/3Lunit Insider ownership report

4/3Zinitix Insider ownership report

4/3Celltrion Pharm Insider ownership report

4/3Nice Information & Telecommunication Insider ownership report

4/3Celltrion Pharm Insider ownership report

All insider trades →

5% holders 96

4/3AmendedNew 5%Kolmar BioTech A major holder's stake rose from 0.00% to 64.73% (new report).64.73%

4/3New 5%Jeil Technos A major holder's stake rose from 0.00% to 44.92% (gift).44.92%

4/3Below 5%Jeil Technos A major holder's stake fell from 44.65% to 0.00% (gift).0.00%

4/3New 5%B2En A major holder's stake rose from 0.00% to 16.11%.16.11%

4/3Below 5%Global Tax Free A major holder's stake fell from 23.09% to 0.00% (related-party change).0.00%

4/3Below 5%MiraeING.A major holder's stake fell from 22.28% to 1.97%.1.97%

4/3GI Innovation A major holder's stake fell from 26.49% to 6.63% (related-party change).6.63%

4/3New 5%Asicland A major holder's stake rose from 0.00% to 9.23% (new report).9.23%

4/3New 5%Fine Technix A major holder's stake rose from 0.00% to 8.78% (stock option).8.78%

4/3New 5%Shinhan 17th Special Purpose Acquisition Company A major holder's stake rose from 0.00% to 8.58% (new report).8.58%

4/3New 5%Shinhan 17th Special Purpose Acquisition Company A major holder's stake rose from 0.00% to 6.98% (new report).6.98%

4/3Unick A major holder's stake fell from 39.72% to 26.03% (related-party change).26.03%

4/3Zinitix A major holder's stake rose from 34.44% to 47.62% (rights offering).47.62%

4/3New 5%Kangstem Biotech A major holder's stake rose from 4.36% to 5.31% (stock option).5.31%

4/3New 5%Neotechnicalsystem A major holder's stake rose from 4.53% to 5.22%.5.22%

4/3New 5%Saramin A major holder's stake rose from 4.55% to 5.19%.5.19%

4/3AmendedSanil Electric A major holder's stake fell from 55.72% to 45.45% (related-party change).45.45%

4/3Cheongbo A major holder's stake fell from 16.36% to 7.60% (conversion/exercise).7.60%

4/3B2En A major holder's stake fell from 30.54% to 24.48% (related-party change).24.48%

4/3Oneul E&M A major holder's stake fell from 11.83% to 5.81% (conversion/exercise).5.81%

4/3RollingStone A major holder's stake fell from 43.61% to 38.56% (conversion/exercise).38.56%

4/3Below 5%Capstone Partners A major holder's stake fell from 5.09% to 0.23%.0.23%

4/3Dowooinsys A major holder's stake fell from 11.84% to 7.20% (off-market sale).7.20%

4/3Billions A major holder's stake fell from 59.38% to 56.45% (conversion/exercise).56.45%

4/3Tomatosystem A major holder's stake fell from 30.73% to 27.85% (related-party change).27.85%

4/3Neuromeka A major holder's stake fell from 20.72% to 18.39% (stock option).18.39%

4/3Hyundai Movex A major holder's stake fell from 51.76% to 49.99%.49.99%

4/3DL E&C A major holder's stake fell from 8.46% to 6.72% (open-market buy).6.72%

4/3MegaStudyEdu A major holder's stake rose from 39.25% to 40.91% (stock option).40.91%

4/3DI Dong IL A major holder's stake rose from 8.12% to 9.77%.9.77%

4/3HLB innoVation A major holder's stake fell from 37.49% to 35.88% (related-party change).35.88%

4/3Plasmapp A major holder's stake rose from 54.12% to 55.54%.55.54%

4/3DSC Investment A major holder's stake fell from 25.47% to 24.12% (related-party change).24.12%

4/3HLB Pep A major holder's stake rose from 44.73% to 45.98% (open-market buy).45.98%

4/3Jeju Semiconductor A major holder's stake rose from 10.47% to 11.70% (related-party change).11.70%

4/3Vitzrocell A major holder's stake fell from 9.56% to 8.44%.8.44%

4/3SG A major holder's stake fell from 18.97% to 17.86%.17.86%

4/3Fantagio A major holder's stake fell from 51.03% to 50.09% (related-party change).50.09%

4/3Dowooinsys A major holder's stake fell from 48.80% to 47.91%.47.91%

4/3Nexus A major holder's stake fell from 47.58% to 46.75% (stock option).46.75%

All 5% holders →

Buybacks 6

4/3BuybackCS Wind Plans to buy back 50,000 sh of treasury stock, Apr 6 to Apr 9.₩3.2B

4/3DisposalAVA Plans to dispose of 168,000 sh of treasury stock, Feb 12 to Mar 23.₩1.9B

4/3DisposalCS Wind Plans to dispose of 17,750 sh of treasury stock, Apr 13 to Apr 13.₩1.2B

4/3TrustUbion Ended a share buyback trust contract.₩600M

4/3AmendedHana Financial Group Share cancellation

Share issues & bonds 16

4/3AmendedCapital reductionAlticast Capital reduction of 80%.80%

4/3AmendedCBDongsung Pharmaceutical Conversion price ₩1,000; if all converted, equal to 34.1% of shares outstanding.₩50B

4/3Rights offeringLaserssel Issuing 1,095,461 sh of new shares, equal to 8.2% of existing shares.₩7B

4/3Rights offeringGenome&Company Issuing 1,040,118 sh of new shares, equal to 2.3% of existing shares.₩7B

4/3CBLaserssel Conversion price ₩7,481; if all converted, equal to 1% of shares outstanding.₩1B

4/3AmendedOsung Advanced Materials Rights offering

4/3FreeT Convertible bond issue

4/3AmendedCXI Healthcare Technology Group Capital reduction

4/3AmendedDynamic solution Convertible bond issue

4/3AmendedJOL Capital reduction

4/3AmendedMgen Solutions Convertible bond issue

4/3AmendedSKC Rights offering

4/3AmendedCSA Cosmic Rights offering

4/3Clobot Rights offering

4/3AmendedCheongbo Convertible bond issue

M&A & spin-offs 2

4/3AmendedHanwha Systems A ₩1.70T deal, equal to 29.7% of total assets.₩1.70T

4/3AmendedE-Mart Share exchange

Key filings, April 3, 2026

Supply contracts 22

Insider trades 100

5% holders 96

Buybacks 6

Share issues & bonds 16

M&A & spin-offs 2

Exchange actions 18