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Aju Steel 139990

Company
아주스틸Aju Steel
Insiders
2
Buys
1
Total Value
₩26M ($18K)
Avg Return
+33.08%
Last Filing
2026-06-11

Aju Steel (139990) has 1 disclosed insider purchases and 5 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩26M ($18K) in reported transaction value. The earliest filing StockDrifts holds for Aju Steel is dated 2024-08-07; the most recent is 2026-06-11. 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 +33.08%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-06-11BUY행사가액조정
동국씨엠
Dongguk CM
-1.4M---
2025-12-11BUY행사가액조정
동국씨엠
Dongguk CM
-1.7M₩3,525-7.4%₩5.8B ($4.1M)
2025-01-08BUY제3자배정유상증자
동국씨엠
Dongguk CM
-11.4M₩4,175-21.8%₩47.4B ($32.9M)
2025-01-07SELL장외매도
윤미숙
Mi-sook Yoon
--3.2M₩4,100+20.4%₩13.0B ($9.0M)
2025-01-07BUY장외매수
동국씨엠
Dongguk CM
-11.2M₩4,100-20.4%₩46.1B ($32.0M)
2025-01-07SELL장외매도
이학연
Hak-yeon Lee
CEO-8.1M₩4,100+20.4%₩33.1B ($23.0M)
2024-12-11BUYCB인수
동국씨엠
Dongguk CM
-7.1M₩3,970-17.8%₩28.1B ($19.5M)
2024-08-26BUY교환
이영세
Youngse Lee
President/CTO564₩5,550-41.2%₩3M ($2K)
2024-08-26BUY교환
윤미숙
Mi-sook Yoon
-30.1K₩5,550-41.2%₩167M ($116K)
2024-08-26BUY교환
이학연
Hak-yeon Lee
CEO198₩5,550-41.2%₩1M ($763)
2024-08-26BUY교환
이도연
Lee Do-yeon
Director (Executive Officer)504₩5,550-41.2%₩3M ($2K)
2024-08-26BUYMarket Buy
이영세
Youngse Lee
President/CTO808₩5,550-41.2%₩4M ($3K)
2024-08-07SELLMarket Sell
이도연
Lee Do-yeon
Director (Executive Officer)-593₩6,270+47.9%₩4M ($3K)
2024-08-07SELLMarket Sell
이도연
Lee Do-yeon
Director (Executive Officer)-1.0K₩6,270+47.9%₩6M ($4K)
2024-08-07SELLMarket Sell
이도연
Lee Do-yeon
Director (Executive Officer)-860₩6,270+47.9%₩5M ($4K)
2024-08-07SELLMarket Sell
이도연
Lee Do-yeon
Director (Executive Officer)-1.0K₩6,270+47.9%₩6M ($4K)
2024-08-07SELLMarket Sell
이도연
Lee Do-yeon
Director (Executive Officer)-47₩6,270+47.9%₩295K ($205)

Frequently asked questions

Who has been buying Aju Steel stock?
2 distinct insiders have filed 1 disclosed insider purchases in Aju Steel (139990), most recently on 2026-06-11. 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 Aju Steel have?
Aju Steel has 1 buy-side and 5 sell-side disclosures on record, covering ₩26M ($18K) in total reported value, spanning 2024-08-07 to 2026-06-11.
Where does StockDrifts get Aju Steel 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 Aju Steel. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.