Who has been buying JC Chemical stock?

14 distinct insiders have filed 30 disclosed insider purchases in JC Chemical (137950), most recently on 2026-06-29. 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 JC Chemical have?

JC Chemical has 30 buy-side and 0 sell-side disclosures on record, covering ₩684M ($475K) in total reported value, spanning 2024-06-07 to 2026-06-29.

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.

JC Chemical 137950

Company

제이씨케미칼JC Chemical

Insiders

Buys

Total Value

₩684M ($475K)

Avg Return

-33.37%

Last Filing

2026-06-29

JC Chemical (137950) has 30 disclosed insider purchases and 0 disclosed disposals on record, filed by 14 distinct insiders. Together those filings cover ₩684M ($475K) in reported transaction value. The earliest filing StockDrifts holds for JC Chemical is dated 2024-06-07; the most recent is 2026-06-29. Across these filings the average return since disclosure is -33.37%, 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
2026-06-29	BUY	Market Buy	김지용 Jiyong Kim	CEO	7.0K	-	-	-
2026-04-29	BUY	자사주상여금	방기석 Ki-seok Bang	vice president	700	₩4,665	-8.5%	₩3M ($2K)
2026-04-29	BUY	자사주상여금	김지용 Jiyong Kim	CEO	700	₩4,665	-8.5%	₩3M ($2K)
2026-03-31	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	15.0K	₩4,935	-11.3%	₩74M ($51K)
2026-03-27	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	3.0K	₩4,685	-6.6%	₩14M ($10K)
2026-03-26	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	2.0K	₩4,785	-8.6%	₩10M ($7K)
2026-01-01	BUY	신규선임	김의진 Kim Eui-jin	Internal director	136.0K	₩3,165	+8.5%	₩431M ($299K)
2025-03-25	BUY	수증	김의윤 Kim Eui-yoon	CEO	25.0K	₩3,875	-11.3%	₩97M ($67K)
2025-03-25	SELL	증여	김수남 Kim Soo-nam	Internal director	-25.0K	₩3,875	+11.3%	₩97M ($67K)
2024-08-07	BUY	Market Buy	박기동 Park Ki-dong	Other non-executive directors	4.0K	₩4,850	-29.2%	₩19M ($13K)
2024-07-16	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	4.6K	₩5,310	-35.3%	₩24M ($17K)
2024-07-15	BUY	Market Buy	윤여훈 Yeohoon Yoon	moving	2.4K	₩5,380	-36.1%	₩13M ($9K)
2024-07-15	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	2.3K	₩5,380	-36.1%	₩12M ($9K)
2024-07-12	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	13.5K	₩5,420	-36.6%	₩73M ($51K)
2024-07-11	BUY	Market Buy	윤여훈 Yeohoon Yoon	moving	1.3K	₩5,420	-36.6%	₩7M ($5K)
2024-07-11	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	7.0K	₩5,420	-36.6%	₩38M ($26K)
2024-07-10	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	11.0K	₩5,440	-36.9%	₩60M ($42K)
2024-07-09	BUY	Market Buy	김수남 Kim Soo-nam	Internal director	17.0K	₩5,430	-36.7%	₩92M ($64K)
2024-07-04	BUY	Market Buy	이정훈 Jeonghoon Lee	Managing Director	600	₩5,420	-36.6%	₩3M ($2K)
2024-07-04	BUY	Market Buy	김의윤 Kim Eui-yoon	CEO	4.0K	₩5,420	-36.6%	₩22M ($15K)
2024-07-03	BUY	Market Buy	이정훈 Jeonghoon Lee	Managing Director	3.1K	₩5,370	-36.0%	₩17M ($12K)
2024-07-02	BUY	Market Buy	이윤희 Yunhee Lee	CEO	1.9K	₩5,480	-37.3%	₩11M ($7K)
2024-07-01	BUY	Market Buy	김지용 Jiyong Kim	vice president	3.7K	₩5,380	-36.1%	₩20M ($14K)
2024-07-01	BUY	Market Buy	이윤희 Yunhee Lee	CEO	67	₩5,380	-36.1%	₩360K ($250)
2024-07-01	BUY	Market Buy	안정모 An Jeong-mo	Managing Director	1.0K	₩5,380	-36.1%	₩5M ($4K)
2024-07-01	BUY	Market Buy	윤사호 Saho Yoon	Internal director	22	₩5,380	-36.1%	₩118K ($82)
2024-07-01	BUY	Market Buy	이준룡 Lee Jun-ryong	Managing Director	4.2K	₩5,380	-36.1%	₩22M ($16K)
2024-06-28	BUY	Market Buy	김재원 Jaewon Kim	moving	3.6K	₩5,440	-36.9%	₩20M ($14K)
2024-06-28	BUY	Market Buy	서유현 Seo Yoohyeon	Managing Director	3.6K	₩5,440	-36.9%	₩20M ($14K)
2024-06-28	BUY	Market Buy	안정모 An Jeong-mo	Managing Director	4.0K	₩5,440	-36.9%	₩22M ($15K)
2024-06-28	BUY	Market Buy	이윤희 Yunhee Lee	CEO	2.0K	₩5,440	-36.9%	₩11M ($8K)
2024-06-28	BUY	Market Buy	정원호 Jeong Won-ho	moving	4.0K	₩5,440	-36.9%	₩22M ($15K)
2024-06-28	BUY	Market Buy	윤병일 Byungil Yoon	vice president	3.6K	₩5,440	-36.9%	₩20M ($14K)
2024-06-28	BUY	Market Buy	윤사호 Saho Yoon	Internal director	4.1K	₩5,440	-36.9%	₩22M ($15K)
2024-06-07	BUY	Market Buy	이윤희 Yunhee Lee	CEO	2.0K	₩5,330	-35.5%	₩11M ($7K)

Frequently asked questions

Who has been buying JC Chemical stock?: 14 distinct insiders have filed 30 disclosed insider purchases in JC Chemical (137950), most recently on 2026-06-29. 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 JC Chemical have?: JC Chemical has 30 buy-side and 0 sell-side disclosures on record, covering ₩684M ($475K) in total reported value, spanning 2024-06-07 to 2026-06-29.
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.