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koise 121850

Company
코이즈koise
Insiders
1
Buys
6
Total Value
₩930M ($646K)
Avg Return
-72.10%
Last Filing
2026-01-30

koise (121850) has 6 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩930M ($646K) in reported transaction value. The earliest filing StockDrifts holds for koise is dated 2024-03-08; the most recent is 2026-01-30. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is -72.10%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-01-30SELL기타
조재형
Jaehyung Jo
CEO-39.6K₩3,530+15.0%₩140M ($97K)
2026-01-30BUY유상신주취득
조재형
Jaehyung Jo
CEO47.5K₩3,530-15.0%₩168M ($116K)
2026-01-08SELL장외매도
조준호
Junho Jo
moving-28.4K₩3,930+23.7%₩112M ($78K)
2026-01-08SELL장외매도
최연주
Yeonju Choi
moving-175.8K₩3,930+23.7%₩691M ($480K)
2026-01-08SELL장외매도
조재형
Jaehyung Jo
CEO-519.5K₩3,930+23.7%₩2.0B ($1.4M)
2026-01-02BUY무상신주취득
조재형
Jaehyung Jo
CEO559.1K₩4,360-31.2%₩2.4B ($1.7M)
2026-01-02BUY무상신주취득
조준호
Junho Jo
moving28.4K₩4,360-31.2%₩124M ($86K)
2026-01-02BUY무상신주취득
최연주
Yeonju Choi
moving175.8K₩4,360-31.2%₩767M ($532K)
2025-11-19SELL자본감소
조재형
Jaehyung Jo
CEO-5.1M₩5,835+48.6%₩29.7B ($20.6M)
2025-11-19SELL자본감소
최연주
Yeonju Choi
moving-1.6M₩5,835+48.6%₩9.3B ($6.5M)
2025-11-19SELL자본감소
조준호
Junho Jo
moving-258.7K₩5,835+48.6%₩1.5B ($1.0M)
2024-09-04BUYMarket Buy
조재형
Jaehyung Jo
CEO10.0K₩8,933-66.4%₩89M ($62K)
2024-09-03BUYMarket Buy
조재형
Jaehyung Jo
CEO20.0K₩9,150-67.2%₩183M ($127K)
2024-09-02BUYMarket Buy
조재형
Jaehyung Jo
CEO10.8K₩9,285-67.7%₩100M ($69K)
2024-03-14BUYMarket Buy
조재형
Jaehyung Jo
CEO13.5K₩13,333-77.5%₩180M ($125K)
2024-03-12BUYMarket Buy
조재형
Jaehyung Jo
CEO8.7K₩13,250-77.4%₩116M ($80K)
2024-03-08BUYMarket Buy
조재형
Jaehyung Jo
CEO20.5K₩12,724-76.4%₩261M ($181K)

Frequently asked questions

Who has been buying koise stock?
1 distinct insiders have filed 6 disclosed insider purchases in koise (121850), most recently on 2026-01-30. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does koise have?
koise has 6 buy-side and 0 sell-side disclosures on record, covering ₩930M ($646K) in total reported value, spanning 2024-03-08 to 2026-01-30.
Where does StockDrifts get koise insider data?
From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?
Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for koise. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.