Who has been buying Gangdong C&L stock?

1 distinct insiders have filed 32 disclosed insider purchases in Gangdong C&L (198440), most recently on 2025-12-16. 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 Gangdong C&L have?

Gangdong C&L has 32 buy-side and 0 sell-side disclosures on record, covering ₩1.1B ($753K) in total reported value, spanning 2024-03-20 to 2025-12-16.

Where does StockDrifts get Gangdong C&L 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.

Gangdong C&L 198440

Company

강동씨앤엘Gangdong C&L

Insiders

Buys

Total Value

₩1.1B ($753K)

Avg Return

-25.76%

Last Filing

2025-12-16

Gangdong C&L (198440) has 32 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩1.1B ($753K) in reported transaction value. The earliest filing StockDrifts holds for Gangdong C&L is dated 2024-03-20; the most recent is 2025-12-16. 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 -25.76%, 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
2025-12-16	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	18.5K	₩1,121	-1.7%	₩21M ($14K)
2025-12-15	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	105	₩1,146	-3.8%	₩120K ($84)
2025-12-12	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	4.5K	₩1,145	-3.8%	₩5M ($4K)
2025-12-11	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	10.0K	₩1,119	-1.5%	₩11M ($8K)
2025-12-10	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	33.4K	₩1,069	+3.1%	₩36M ($25K)
2025-12-09	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	24.4K	₩1,074	+2.6%	₩26M ($18K)
2025-11-21	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	3.0K	₩1,021	+7.9%	₩3M ($2K)
2025-11-19	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	3.8K	₩1,032	+6.8%	₩4M ($3K)
2025-11-18	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	4.6K	₩1,033	+6.7%	₩5M ($3K)
2025-11-14	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	769	₩1,080	+2.0%	₩831K ($577)
2025-08-14	BUY	자사주상여금	박을성 Park Eul-seong	vice president	5.0K	₩1,370	-19.6%	₩7M ($5K)
2025-08-14	BUY	자사주상여금	구희택 Koo Hee-taek	Co-CEO	5.0K	₩1,370	-19.6%	₩7M ($5K)
2025-08-14	BUY	자사주상여금	이훈창 Hunchang Lee	Co-CEO	5.0K	₩1,370	-19.6%	₩7M ($5K)
2025-01-09	BUY	장외매수	강동아스콘 Gangdong Ascon	-	2.3M	₩1,235	-10.8%	₩2.8B ($2.0M)
2025-01-09	BUY	장외매수	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	5.2M	₩1,235	-10.8%	₩6.4B ($4.5M)
2025-01-09	SELL	장외매도	강대완 Daewan Kang	Co-CEO	-7.5M	₩1,235	+10.8%	₩9.3B ($6.4M)
2024-07-01	BUY	제3자배정유상증자	강동아스콘 Gangdong Ascon	-	7.5M	₩2,380	-53.7%	₩17.9B ($12.4M)
2024-05-08	BUY	시간외매매	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	1.3M	₩1,678	-34.3%	₩2.2B ($1.6M)
2024-04-23	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	10.0K	₩1,757	-37.3%	₩18M ($12K)
2024-04-23	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	44.2K	₩1,757	-37.3%	₩78M ($54K)
2024-04-22	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	32.8K	₩1,729	-36.3%	₩57M ($39K)
2024-04-19	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	18.0K	₩1,768	-37.7%	₩32M ($22K)
2024-04-18	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	30.4K	₩1,772	-37.8%	₩54M ($37K)
2024-04-17	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	40.8K	₩1,767	-37.6%	₩72M ($50K)
2024-04-16	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	51.6K	₩1,745	-36.9%	₩90M ($63K)
2024-04-12	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	43.1K	₩1,785	-38.3%	₩77M ($53K)
2024-04-11	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	18.6K	₩1,765	-37.6%	₩33M ($23K)
2024-04-09	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	19.0K	₩1,784	-38.2%	₩34M ($24K)
2024-04-08	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	18.9K	₩1,793	-38.5%	₩34M ($24K)
2024-04-05	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	23.0K	₩1,802	-38.9%	₩41M ($29K)
2024-04-04	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	20.6K	₩1,802	-38.9%	₩37M ($26K)
2024-04-03	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	2.0K	₩1,805	-39.0%	₩4M ($3K)
2024-04-02	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	28.0K	₩1,799	-38.7%	₩50M ($35K)
2024-04-01	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	29.2K	₩1,819	-39.4%	₩53M ($37K)
2024-03-29	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	23.7K	₩1,816	-39.3%	₩43M ($30K)
2024-03-27	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	14.4K	₩1,813	-39.2%	₩26M ($18K)
2024-03-26	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	15.0K	₩1,805	-39.0%	₩27M ($19K)
2024-03-25	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	13.4K	₩1,800	-38.8%	₩24M ($17K)
2024-03-22	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	26.0K	₩1,802	-38.9%	₩47M ($33K)
2024-03-21	BUY	Market Buy	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	23.7K	₩1,813	-39.2%	₩43M ($30K)
2024-03-20	BUY	신규보고	강동레미콘에이치에스(HS) Gangdong Ready Mixed Concrete HS (HS)	-	3.2M	₩1,806	-39.0%	₩5.8B ($4.0M)

Frequently asked questions

Who has been buying Gangdong C&L stock?: 1 distinct insiders have filed 32 disclosed insider purchases in Gangdong C&L (198440), most recently on 2025-12-16. 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 Gangdong C&L have?: Gangdong C&L has 32 buy-side and 0 sell-side disclosures on record, covering ₩1.1B ($753K) in total reported value, spanning 2024-03-20 to 2025-12-16.
Where does StockDrifts get Gangdong C&L 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 Gangdong C&L. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.