Who has been buying Hansung Cleantech stock?

5 distinct insiders have filed 25 disclosed insider purchases in Hansung Cleantech (066980), most recently on 2025-11-10. 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 Hansung Cleantech have?

Hansung Cleantech has 25 buy-side and 1 sell-side disclosures on record, covering ₩1.8B ($1.2M) in total reported value, spanning 2024-03-18 to 2025-11-10.

Where does StockDrifts get Hansung Cleantech 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.

Hansung Cleantech 066980

Company

한성크린텍Hansung Cleantech

Insiders

Buys

Total Value

₩1.8B ($1.2M)

Avg Return

-6.06%

Last Filing

2025-11-10

Hansung Cleantech (066980) has 25 disclosed insider purchases and 1 disclosed disposals on record, filed by 5 distinct insiders. Together those filings cover ₩1.8B ($1.2M) in reported transaction value. The earliest filing StockDrifts holds for Hansung Cleantech is dated 2024-03-18; the most recent is 2025-11-10. 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 -6.06%, 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
2026-07-16	SELL	전환등	이에셋글로벌 Ieset Global	-	-993.4K	₩1,559	+7.8%	₩1.5B ($1.1M)
2026-07-16	BUY	전환사채의권리행사	이에셋글로벌 Ieset Global	-	993.4K	₩1,559	-7.8%	₩1.5B ($1.0M)
2026-03-24	SELL	행사가액조정	이에셋글로벌 Ieset Global	-	-289.4K	₩1,490	+3.5%	₩431M ($299K)
2025-11-10	BUY	신규선임	김석 Kim Seok	moving	957	₩1,205	+3.1%	₩1M ($801)
2025-09-24	SELL	합병	제이에스아이컴퍼니 JSI Company	-	-5.4M	₩1,272	+2.3%	₩6.9B ($4.8M)
2025-09-24	BUY	합병	제이에스아이홀딩스 JSI Holdings	-	5.9M	₩1,272	-2.3%	₩7.5B ($5.2M)
2025-08-25	BUY	행사가액조정	이에셋글로벌 Ieset Global	-	485.1K	-	-	-
2025-08-04	BUY	합병	제이에스아이컴퍼니 JSI Company	-	393.0K	₩1,300	-4.4%	₩511M ($355K)
2025-05-30	BUY	Market Buy	아이즈비전 Eyes Vision	-	16.0K	₩1,619	-23.2%	₩26M ($18K)
2025-05-29	BUY	Market Buy	아이즈비전 Eyes Vision	-	62.3K	₩1,625	-23.5%	₩101M ($70K)
2025-05-28	BUY	Market Buy	아이즈비전 Eyes Vision	-	31.0K	₩1,554	-20.0%	₩48M ($33K)
2025-05-27	BUY	Market Buy	아이즈비전 Eyes Vision	-	65.3K	₩1,504	-17.4%	₩98M ($68K)
2025-05-26	BUY	Market Buy	아이즈비전 Eyes Vision	-	36.0K	₩1,506	-17.5%	₩54M ($38K)
2025-05-23	BUY	Market Buy	아이즈비전 Eyes Vision	-	63.4K	₩1,493	-16.7%	₩95M ($66K)
2025-05-22	BUY	Market Buy	아이즈비전 Eyes Vision	-	47.6K	₩1,461	-14.9%	₩70M ($48K)
2025-05-21	BUY	Market Buy	이에셋글로벌 Ieset Global	-	45.8K	₩1,469	-15.4%	₩67M ($47K)
2025-05-21	BUY	Market Buy	아이즈비전 Eyes Vision	-	16.0K	₩1,469	-15.4%	₩24M ($16K)
2025-05-20	BUY	Market Buy	이에셋글로벌 Ieset Global	-	86.7K	₩1,425	-12.8%	₩124M ($86K)
2025-05-19	BUY	Market Buy	이에셋글로벌 Ieset Global	-	81.6K	₩1,390	-10.6%	₩113M ($79K)
2025-05-19	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	62.2K	₩1,390	-10.6%	₩86M ($60K)
2025-05-15	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	101.8K	₩1,470	-15.4%	₩150M ($104K)
2025-05-14	BUY	Market Buy	이에셋글로벌 Ieset Global	-	31.4K	₩1,515	-17.9%	₩48M ($33K)
2025-05-14	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	112.7K	₩1,515	-17.9%	₩171M ($119K)
2025-04-10	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	42.4K	₩1,197	+3.8%	₩51M ($35K)
2025-04-10	BUY	Market Buy	이에셋글로벌 Ieset Global	-	20.0K	₩1,197	+3.8%	₩24M ($17K)
2025-04-09	BUY	Market Buy	이에셋글로벌 Ieset Global	-	15.0K	₩1,141	+8.9%	₩17M ($12K)
2025-04-09	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	38.9K	₩1,141	+8.9%	₩44M ($31K)
2025-04-08	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	24.1K	₩1,150	+8.1%	₩28M ($19K)
2025-04-07	BUY	Market Buy	이에셋글로벌 Ieset Global	-	67.0K	₩1,130	+10.0%	₩76M ($53K)
2025-04-04	BUY	신규보고	이에셋글로벌 Ieset Global	-	1.8M	₩1,180	+5.3%	₩2.1B ($1.5M)
2025-04-04	BUY	신규보고	이에셋글로벌 Ieset Global	-	2.8M	₩1,180	+5.3%	₩3.3B ($2.3M)
2025-04-04	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	97.1K	₩1,180	+5.3%	₩115M ($80K)
2025-04-04	BUY	Market Buy	이에셋글로벌 Ieset Global	-	30.0K	₩1,180	+5.3%	₩35M ($25K)
2025-04-03	BUY	Market Buy	제이에스아이컴퍼니 JSI Company	-	81.2K	₩1,219	+2.0%	₩99M ($69K)
2025-03-18	BUY	Market Buy	박성민 Seongmin Park	moving	2.4K	₩1,217	+2.1%	₩3M ($2K)
2025-01-31	BUY	신규선임	박성민 Seongmin Park	moving	1.6K	₩1,639	-24.2%	₩3M ($2K)
2024-11-20	SELL	Market Sell	한상범 Sangbeom Han	moving	-5.0K	₩1,865	+33.4%	₩9M ($6K)
2024-05-31	SELL	임원퇴임	길대수 Gil Dae-su	moving	-500	₩3,005	+58.6%	₩2M ($1K)
2024-05-31	SELL	임원퇴임	서호경 Seo Ho-kyung	moving	-1.0K	₩3,005	+58.6%	₩3M ($2K)
2024-05-31	SELL	임원퇴임	유병강 Yoo Byeong-gang	president	-3.7K	₩3,005	+58.6%	₩11M ($8K)
2024-03-31	SELL	임원퇴임	변경민 Changemin	Managing Director	-2.0K	₩3,475	+64.2%	₩7M ($5K)
2024-03-28	SELL	임원퇴임	이정섭 Jeongseop Lee	CEO	-50.0K	₩3,520	+64.7%	₩176M ($122K)
2024-03-18	BUY	신규선임	정윤석 Yunseok Jeong	vice president	11.4K	₩3,345	-62.8%	₩38M ($27K)

Frequently asked questions

Who has been buying Hansung Cleantech stock?: 5 distinct insiders have filed 25 disclosed insider purchases in Hansung Cleantech (066980), most recently on 2025-11-10. 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 Hansung Cleantech have?: Hansung Cleantech has 25 buy-side and 1 sell-side disclosures on record, covering ₩1.8B ($1.2M) in total reported value, spanning 2024-03-18 to 2025-11-10.
Where does StockDrifts get Hansung Cleantech 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 Hansung Cleantech. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.