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Cosmo Advanced Materials 005070

Company
코스모신소재Cosmo Advanced Materials
Insiders
2
Buys
2
Total Value
₩248M ($172K)
Avg Return
+70.94%
Last Filing
2026-03-24

Cosmo Advanced Materials (005070) has 2 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩248M ($172K) in reported transaction value. The earliest filing StockDrifts holds for Cosmo Advanced Materials is dated 2024-10-22; the most recent is 2026-03-24. 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 +70.94%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-03-24BUY제3자배정유상증자
코스모앤컴퍼니
Cosmo & Company
-703.8K---
2025-06-30BUYMarket Buy
김창수
Changsu Kim
president4.4K₩33,850+69.3%₩148M ($103K)
2025-06-02BUYMarket Buy
홍동환
Donghwan Hong
CEO3.0K₩33,200+72.6%₩100M ($69K)
2024-11-29BUY기타
정혁
Jeonghyeok
Managing Director407₩61,900-7.4%₩25M ($17K)
2024-10-22BUY신규보고
정혁
Jeonghyeok
Managing Director50₩102,500-44.1%₩5M ($4K)

Frequently asked questions

Who has been buying Cosmo Advanced Materials stock?
2 distinct insiders have filed 2 disclosed insider purchases in Cosmo Advanced Materials (005070), most recently on 2026-03-24. 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 Advanced Materials have?
Cosmo Advanced Materials has 2 buy-side and 0 sell-side disclosures on record, covering ₩248M ($172K) in total reported value, spanning 2024-10-22 to 2026-03-24.
Where does StockDrifts get Cosmo Advanced Materials 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 Advanced Materials. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.