Who has been buying Hyosung stock?

1 distinct insiders have filed 0 disclosed insider purchases in Hyosung (004800), most recently on 2026-03-04. 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 Hyosung have?

Hyosung has 0 buy-side and 10 sell-side disclosures on record, covering ₩5.5B ($3.8M) in total reported value, spanning 2024-05-24 to 2026-03-04.

Where does StockDrifts get Hyosung 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.

Hyosung 004800

Company

효성Hyosung

Insiders

Buys

Total Value

₩5.5B ($3.8M)

Avg Return

-132.78%

Last Filing

2026-03-04

Hyosung (004800) has 0 disclosed insider purchases and 10 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩5.5B ($3.8M) in reported transaction value. The earliest filing StockDrifts holds for Hyosung is dated 2024-05-24; the most recent is 2026-03-04. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea).

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-03-04	SELL	Market Sell	조현상 Hyunsang Cho	-	-1.4K	-	-	-
2026-03-03	SELL	Market Sell	조현상 Hyunsang Cho	-	-4.1K	-	-	-
2026-02-27	SELL	Market Sell	조현상 Hyunsang Cho	-	-3.9K	-	-	-
2026-01-20	SELL	Market Sell	조현상 Hyunsang Cho	-	-2.1K	₩159,400	-8.1%	₩327M ($227K)
2025-06-24	SELL	Market Sell	조현상 Hyunsang Cho	-	-4.8K	₩71,900	-139.6%	₩345M ($240K)
2025-06-23	SELL	Market Sell	조현상 Hyunsang Cho	-	-8.8K	₩68,200	-152.6%	₩597M ($414K)
2025-06-20	SELL	Market Sell	조현상 Hyunsang Cho	-	-10.7K	₩67,100	-156.8%	₩718M ($499K)
2025-06-09	SELL	Market Sell	조현상 Hyunsang Cho	-	-18.9K	₩66,500	-159.1%	₩1.3B ($875K)
2025-06-05	SELL	Market Sell	조현상 Hyunsang Cho	-	-20.7K	₩67,200	-156.4%	₩1.4B ($968K)
2025-06-04	SELL	Market Sell	조현상 Hyunsang Cho	-	-12.5K	₩67,100	-156.8%	₩839M ($582K)
2024-08-21	BUY	시간외매매	조현준 Hyunjun Cho	CEO Chairman	160.8K	₩44,300	+288.9%	₩7.1B ($4.9M)
2024-08-21	SELL	시간외매매	조현상 Hyunsang Cho	-	-160.8K	₩44,300	-288.9%	₩7.1B ($4.9M)
2024-08-19	BUY	시간외매매	조현준 Hyunjun Cho	CEO Chairman	770.5K	₩44,150	+290.3%	₩34.0B ($23.6M)
2024-08-19	SELL	시간외매매	조현상 Hyunsang Cho	-	-770.5K	₩44,150	-290.3%	₩34.0B ($23.6M)
2024-08-16	SELL	시간외매매	조현상 Hyunsang Cho	-	-406.5K	₩43,300	-297.9%	₩17.6B ($12.2M)
2024-08-16	BUY	시간외매매	조현준 Hyunjun Cho	CEO Chairman	406.5K	₩43,300	+297.9%	₩17.6B ($12.2M)
2024-07-03	SELL	회사분할	조현상 Hyunsang Cho	vice president	-821.7K	₩45,450	-279.1%	₩37.3B ($25.9M)
2024-07-03	SELL	회사분할	이상운 Lee Sang-un	vice president	-259	₩45,450	-279.1%	₩12M ($8K)
2024-07-03	SELL	회사분할	조현준 Hyunjun Cho	CEO Chairman	-1.2M	₩45,450	-279.1%	₩55.9B ($38.8M)
2024-05-27	BUY	상속	조현준 Hyunjun Cho	CEO Chairman	1.0M	₩53,846	+220.0%	₩54.0B ($37.5M)
2024-05-27	SELL	피상속	조석래 Seok-rae Jo	-	-1.0M	₩53,846	-220.0%	₩54.0B ($37.5M)
2024-05-24	BUY	상속	조현준 Hyunjun Cho	CEO Chairman	1.1M	₩46,913	+267.3%	₩53.1B ($36.9M)
2024-05-24	SELL	피상속	조석래 Seok-rae Jo	-	-1.1M	₩46,913	-267.3%	₩53.1B ($36.9M)

Frequently asked questions

Who has been buying Hyosung stock?: 1 distinct insiders have filed 0 disclosed insider purchases in Hyosung (004800), most recently on 2026-03-04. 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 Hyosung have?: Hyosung has 0 buy-side and 10 sell-side disclosures on record, covering ₩5.5B ($3.8M) in total reported value, spanning 2024-05-24 to 2026-03-04.
Where does StockDrifts get Hyosung 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 Hyosung. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.