Who has been buying SeAH Steel Holdings stock?

1 distinct insiders have filed 315 disclosed insider purchases in SeAH Steel Holdings (003030), most recently on 2026-01-26. 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 SeAH Steel Holdings have?

SeAH Steel Holdings has 315 buy-side and 367 sell-side disclosures on record, covering ₩136.1B ($94.5M) in total reported value, spanning 2024-01-02 to 2026-01-26.

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.

SeAH Steel Holdings 003030

Company

세아제강지주SeAH Steel Holdings

Insiders

Buys

315

Total Value

₩136.1B ($94.5M)

Avg Return

-0.19%

Last Filing

2026-01-26

SeAH Steel Holdings (003030) has 315 disclosed insider purchases and 367 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩136.1B ($94.5M) in reported transaction value. The earliest filing StockDrifts holds for SeAH Steel Holdings is dated 2024-01-02; the most recent is 2026-01-26. Across these filings the average return since disclosure is -0.19%, 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
2026-08-26	BUY	Market Buy	이주성 Lee Joo-seong	CEO and President	100	₩101,800	+1.6%	₩10M ($7K)
2026-08-25	BUY	Market Buy	이주성 Lee Joo-seong	CEO and President	786	₩102,000	+1.4%	₩77M ($54K)
2026-07-23	BUY	Market Buy	이주성 Lee Joo-seong	CEO and President	1.7K	₩112,000	-1.2%	₩164M ($114K)
2026-07-22	BUY	Market Buy	이주성 Lee Joo-seong	CEO and President	1.0K	₩98,500	+12.4%	₩97M ($68K)
2026-07-21	BUY	Market Buy	이주성 Lee Joo-seong	CEO and President	1.6K	₩97,100	+14.0%	₩153M ($106K)
2026-01-26	SELL	Market Sell	국민연금공단 National Pension Service	-	-7.2K	₩138,800	-5.3%	₩992M ($689K)
2026-01-26	BUY	Market Buy	국민연금공단 National Pension Service	-	1.2K	₩138,800	+5.3%	₩166M ($115K)
2026-01-23	SELL	Market Sell	국민연금공단 National Pension Service	-	-8.4K	₩137,900	-6.0%	₩1.2B ($802K)
2026-01-23	BUY	Market Buy	국민연금공단 National Pension Service	-	113	₩137,900	+6.0%	₩16M ($11K)
2026-01-22	BUY	Market Buy	국민연금공단 National Pension Service	-	72	₩130,400	+12.1%	₩9M ($7K)
2026-01-21	BUY	Market Buy	국민연금공단 National Pension Service	-	38	₩123,100	+18.8%	₩5M ($3K)
2026-01-20	BUY	Market Buy	국민연금공단 National Pension Service	-	323	₩123,100	+18.8%	₩40M ($28K)
2026-01-20	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.3K	₩123,100	-18.8%	₩287M ($199K)
2026-01-19	SELL	Market Sell	국민연금공단 National Pension Service	-	-500	₩121,700	-20.1%	₩61M ($42K)
2026-01-16	SELL	Market Sell	국민연금공단 National Pension Service	-	-500	₩118,400	-23.5%	₩59M ($41K)
2026-01-16	BUY	Market Buy	국민연금공단 National Pension Service	-	81	₩118,400	+23.5%	₩10M ($7K)
2026-01-15	BUY	Market Buy	국민연금공단 National Pension Service	-	85	₩119,700	+22.1%	₩10M ($7K)
2026-01-14	BUY	Market Buy	국민연금공단 National Pension Service	-	70	₩119,000	+22.9%	₩8M ($6K)
2026-01-14	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.0K	₩119,000	-22.9%	₩119M ($83K)
2026-01-12	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.0K	₩117,500	-24.4%	₩121M ($84K)
2026-01-12	BUY	Market Buy	국민연금공단 National Pension Service	-	42	₩117,500	+24.4%	₩5M ($3K)
2026-01-09	BUY	Market Buy	국민연금공단 National Pension Service	-	42	₩115,300	+26.8%	₩5M ($3K)
2026-01-09	SELL	Market Sell	국민연금공단 National Pension Service	-	-400	₩115,300	-26.8%	₩46M ($32K)
2026-01-08	BUY	Market Buy	국민연금공단 National Pension Service	-	152	₩113,000	+29.4%	₩17M ($12K)
2026-01-08	SELL	Market Sell	국민연금공단 National Pension Service	-	-800	₩113,000	-29.4%	₩90M ($63K)
2026-01-07	SELL	Market Sell	국민연금공단 National Pension Service	-	-905	₩117,900	-24.0%	₩107M ($74K)
2026-01-06	BUY	Market Buy	국민연금공단 National Pension Service	-	106	₩121,000	+20.8%	₩13M ($9K)
2026-01-05	SELL	Market Sell	국민연금공단 National Pension Service	-	-748	₩122,100	-19.7%	₩91M ($63K)
2026-01-05	BUY	Market Buy	국민연금공단 National Pension Service	-	4	₩122,100	+19.7%	₩488K ($339)
2026-01-02	SELL	Market Sell	국민연금공단 National Pension Service	-	-950	₩126,800	-15.3%	₩120M ($84K)
2025-12-30	SELL	Market Sell	국민연금공단 National Pension Service	-	-733	₩128,100	-14.1%	₩94M ($65K)
2025-12-29	SELL	Market Sell	국민연금공단 National Pension Service	-	-740	₩127,300	-14.8%	₩94M ($65K)
2025-12-26	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.9K	₩127,000	-15.1%	₩374M ($259K)
2025-12-24	SELL	Market Sell	국민연금공단 National Pension Service	-	-2.4K	₩129,800	-12.6%	₩311M ($216K)
2025-12-23	SELL	Market Sell	국민연금공단 National Pension Service	-	-717	₩128,700	-13.6%	₩92M ($64K)
2025-12-22	SELL	Market Sell	국민연금공단 National Pension Service	-	-693	₩131,100	-11.5%	₩91M ($63K)
2025-12-19	BUY	Market Buy	국민연금공단 National Pension Service	-	875	₩131,500	+11.2%	₩115M ($80K)
2025-12-19	SELL	Market Sell	국민연금공단 National Pension Service	-	-710	₩131,500	-11.2%	₩93M ($65K)
2025-12-18	SELL	Market Sell	국민연금공단 National Pension Service	-	-771	₩132,800	-10.1%	₩102M ($71K)
2025-12-17	SELL	Market Sell	국민연금공단 National Pension Service	-	-651	₩137,300	-6.5%	₩89M ($62K)
2025-12-17	BUY	Market Buy	국민연금공단 National Pension Service	-	109	₩137,300	+6.5%	₩15M ($10K)
2025-12-16	SELL	Market Sell	국민연금공단 National Pension Service	-	-8.1K	₩134,100	-9.0%	₩1.1B ($757K)
2025-12-16	BUY	Market Buy	국민연금공단 National Pension Service	-	4.0K	₩134,100	+9.0%	₩536M ($373K)
2025-12-15	SELL	Market Sell	국민연금공단 National Pension Service	-	-686	₩140,600	-4.0%	₩96M ($67K)
2025-12-12	SELL	Market Sell	국민연금공단 National Pension Service	-	-778	₩146,200	+0.0%	₩114M ($79K)
2025-12-12	BUY	Market Buy	국민연금공단 National Pension Service	-	500	₩146,200	+0.0%	₩73M ($51K)
2025-12-11	BUY	Market Buy	국민연금공단 National Pension Service	-	73	₩138,800	+5.3%	₩10M ($7K)
2025-12-11	SELL	Market Sell	국민연금공단 National Pension Service	-	-1.7K	₩138,800	-5.3%	₩231M ($160K)
2025-12-10	SELL	Market Sell	국민연금공단 National Pension Service	-	-659	₩138,800	-5.3%	₩91M ($64K)
2025-12-09	BUY	Market Buy	국민연금공단 National Pension Service	-	500	₩139,500	+4.8%	₩70M ($48K)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying SeAH Steel Holdings stock?: 1 distinct insiders have filed 315 disclosed insider purchases in SeAH Steel Holdings (003030), most recently on 2026-01-26. 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 SeAH Steel Holdings have?: SeAH Steel Holdings has 315 buy-side and 367 sell-side disclosures on record, covering ₩136.1B ($94.5M) in total reported value, spanning 2024-01-02 to 2026-01-26.
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.