Who has been buying Korean Cast Steel stock?

1 distinct insiders have filed 4 disclosed insider purchases in Korean Cast Steel (025890), most recently on 2026-03-27. 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 Korean Cast Steel have?

Korean Cast Steel has 4 buy-side and 0 sell-side disclosures on record, covering ₩159M ($110K) in total reported value, spanning 2026-03-24 to 2026-03-27.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Korean Cast Steel 025890

Company

한국주강Korean Cast Steel

Insiders

Buys

Total Value

₩159M ($110K)

Avg Return

+6.48%

Last Filing

2026-03-27

Korean Cast Steel (025890) has 4 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩159M ($110K) in reported transaction value. The earliest filing StockDrifts holds for Korean Cast Steel is dated 2026-03-24; the most recent is 2026-03-27. Across these filings the average return since disclosure is +6.48%, 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
2026-08-14	BUY	Market Buy	정상욱 Jeong Sang-wook	CEO	20.1K	₩2,560	-3.5%	₩51M ($36K)
2026-08-14	SELL	Market Sell	정상욱 Jeong Sang-wook	CEO	-539	₩2,560	+3.5%	₩1M ($986)
2026-08-13	BUY	Market Buy	하만규 Ha Man-gyu	CEO	67.3K	₩2,570	-0.4%	₩172M ($119K)
2026-08-12	BUY	Market Buy	하만규 Ha Man-gyu	CEO	30.0K	₩2,590	+0.0%	₩76M ($53K)
2026-08-11	BUY	Market Buy	하만규 Ha Man-gyu	CEO	30.0K	₩2,600	-0.4%	₩76M ($52K)
2026-08-10	BUY	Market Buy	하만규 Ha Man-gyu	CEO	28.0K	₩2,490	+4.0%	₩70M ($49K)
2026-08-07	BUY	Market Buy	하만규 Ha Man-gyu	CEO	20.0K	₩2,470	+0.0%	₩47M ($33K)
2026-08-06	BUY	Market Buy	하만규 Ha Man-gyu	CEO	15.0K	₩2,505	-1.4%	₩34M ($24K)
2026-08-05	BUY	Market Buy	하만규 Ha Man-gyu	CEO	9.9K	₩2,405	+2.7%	₩23M ($16K)
2026-03-27	BUY	Market Buy	정상욱 Jeong Sang-wook	CEO	39.6K	₩1,780	+0.0%	₩70M ($49K)
2026-03-26	BUY	Market Buy	정상욱 Jeong Sang-wook	CEO	43.9K	₩1,712	+4.0%	₩75M ($52K)
2026-03-25	BUY	Market Buy	정상욱 Jeong Sang-wook	CEO	7.2K	₩1,631	+9.1%	₩12M ($8K)
2026-03-24	BUY	Market Buy	정상욱 Jeong Sang-wook	CEO	1.0K	₩1,578	+12.8%	₩2M ($1K)

Frequently asked questions

Who has been buying Korean Cast Steel stock?: 1 distinct insiders have filed 4 disclosed insider purchases in Korean Cast Steel (025890), most recently on 2026-03-27. 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 Korean Cast Steel have?: Korean Cast Steel has 4 buy-side and 0 sell-side disclosures on record, covering ₩159M ($110K) in total reported value, spanning 2026-03-24 to 2026-03-27.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.