Who has been buying Fine Best Steel stock?

4 distinct insiders have filed 19 disclosed insider purchases in Fine Best Steel (133820), most recently on 2026-04-06. 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 Fine Best Steel have?

Fine Best Steel has 19 buy-side and 0 sell-side disclosures on record, covering ₩132M ($92K) in total reported value, spanning 2021-04-21 to 2026-04-06.

Where does StockDrifts get Fine Best 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.

Fine Best Steel 133820

Company

화인베스틸Fine Best Steel

Insiders

Buys

Total Value

₩132M ($92K)

Avg Return

+31.83%

Last Filing

2026-04-06

Fine Best Steel (133820) has 19 disclosed insider purchases and 0 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩132M ($92K) in reported transaction value. The earliest filing StockDrifts holds for Fine Best Steel is dated 2021-04-21; the most recent is 2026-04-06. 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 +31.83%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-04-06	BUY	Market Buy	장민준 Minjun Jang	Managing Director	1.5K	₩1,249	+27.5%	₩2M ($1K)
2026-04-06	BUY	Market Buy	장민준 Minjun Jang	Managing Director	16.0K	₩1,249	+27.5%	₩20M ($14K)
2026-04-03	BUY	Market Buy	장민준 Minjun Jang	Managing Director	18.3K	₩1,221	+30.4%	₩22M ($16K)
2026-04-03	BUY	Market Buy	장민준 Minjun Jang	Managing Director	5	₩1,221	+30.4%	₩6K ($4)
2026-04-03	BUY	Market Buy	장민준 Minjun Jang	Managing Director	35	₩1,221	+30.4%	₩43K ($30)
2026-04-03	BUY	Market Buy	장민준 Minjun Jang	Managing Director	108	₩1,221	+30.4%	₩132K ($92)
2026-04-02	BUY	Market Buy	장민준 Minjun Jang	Managing Director	3.3K	₩1,268	+25.6%	₩4M ($3K)
2026-04-02	BUY	Market Buy	장민준 Minjun Jang	Managing Director	766	₩1,268	+25.6%	₩971K ($675)
2026-04-02	BUY	Market Buy	장민준 Minjun Jang	Managing Director	7.2K	₩1,268	+25.6%	₩9M ($6K)
2026-04-02	BUY	Market Buy	장민준 Minjun Jang	Managing Director	2.4K	₩1,268	+25.6%	₩3M ($2K)
2026-04-02	BUY	Market Buy	장민준 Minjun Jang	Managing Director	364	₩1,268	+25.6%	₩462K ($321)
2024-09-09	BUY	Market Buy	정인호 Inho Jeong	CEO	10.0K	₩840	+78.8%	₩8M ($6K)
2024-06-19	BUY	Market Buy	정인호 Inho Jeong	CEO	4.5K	₩1,100	+36.5%	₩5M ($3K)
2024-06-12	BUY	Market Buy	최길호 Gilho Choi	moving	3.4K	₩1,150	+30.6%	₩4M ($3K)
2024-06-11	BUY	Market Buy	최길호 Gilho Choi	moving	5.0K	₩1,156	+29.9%	₩6M ($4K)
2024-06-11	BUY	Market Buy	조병열 Jo Byeong-yeol	Managing Director	10.0K	₩1,156	+29.9%	₩12M ($8K)
2024-06-10	BUY	Market Buy	정인호 Inho Jeong	CEO	3.1K	₩1,146	+31.1%	₩4M ($2K)
2024-06-07	BUY	Market Buy	정인호 Inho Jeong	CEO	7.9K	₩1,146	+31.1%	₩9M ($6K)
2024-05-29	BUY	Market Buy	정인호 Inho Jeong	CEO	20.0K	₩1,133	+32.6%	₩23M ($16K)
2024-04-02	SELL	시간외매매	동일스틸럭스 Dongil Steel Lux	-	-720.0K	₩1,305	-15.1%	₩940M ($653K)
2024-03-28	SELL	시간외매매	동일스틸럭스 Dongil Steel Lux	-	-780.0K	₩1,303	-15.3%	₩1.0B ($706K)
2021-04-21	SELL	시간외매매	화인인터내셔날 Fine International	-	-300.0K	₩2,980	+49.6%	₩894M ($621K)

Frequently asked questions

Who has been buying Fine Best Steel stock?: 4 distinct insiders have filed 19 disclosed insider purchases in Fine Best Steel (133820), most recently on 2026-04-06. 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 Fine Best Steel have?: Fine Best Steel has 19 buy-side and 0 sell-side disclosures on record, covering ₩132M ($92K) in total reported value, spanning 2021-04-21 to 2026-04-06.
Where does StockDrifts get Fine Best 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 Fine Best Steel. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.