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Cosmo Chemicals 005420

Company
코스모화학Cosmo Chemicals
Insiders
3
Buys
4
Total Value
₩500M ($347K)
Avg Return
-13.54%
Last Filing
2026-06-12

Cosmo Chemicals (005420) has 4 disclosed insider purchases and 0 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩500M ($347K) in reported transaction value. The earliest filing StockDrifts holds for Cosmo Chemicals is dated 2024-05-24; the most recent is 2026-06-12. 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 -13.54%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-06-12BUYMarket Buy
신동구
Shin Dong-gu
Head of Sales and Purchasing Department10.0K₩12,970+3.7%₩130M ($90K)
2025-04-02BUYMarket Buy
김두영
Dooyoung Kim
CEO5.0K₩14,270+21.2%₩71M ($50K)
2025-03-30BUY신규선임
강선구
Kang Seon-gu
president13.3K₩15,190+13.9%₩202M ($140K)
2024-05-28BUYMarket Buy
안성덕
Seongdeok Ahn
CEO6.8K₩29,600-41.5%₩201M ($139K)
2024-05-24BUYMarket Buy
안성덕
Seongdeok Ahn
CEO3.6K₩27,700-37.5%₩98M ($68K)

Frequently asked questions

Who has been buying Cosmo Chemicals stock?
3 distinct insiders have filed 4 disclosed insider purchases in Cosmo Chemicals (005420), most recently on 2026-06-12. 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 Cosmo Chemicals have?
Cosmo Chemicals has 4 buy-side and 0 sell-side disclosures on record, covering ₩500M ($347K) in total reported value, spanning 2024-05-24 to 2026-06-12.
Where does StockDrifts get Cosmo Chemicals 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 Cosmo Chemicals. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.