Who has been buying Jincotech stock?

3 distinct insiders have filed 29 disclosed insider purchases in Jincotech (250030), most recently on 2026-03-20. 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 Jincotech have?

Jincotech has 29 buy-side and 0 sell-side disclosures on record, covering ₩41M ($28K) in total reported value, spanning 2022-07-20 to 2026-03-20.

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.

Jincotech 250030

Company

진코스텍Jincotech

Insiders

Buys

Total Value

₩41M ($28K)

Avg Return

+198.65%

Last Filing

2026-03-20

Jincotech (250030) has 29 disclosed insider purchases and 0 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩41M ($28K) in reported transaction value. The earliest filing StockDrifts holds for Jincotech is dated 2022-07-20; the most recent is 2026-03-20. Across these filings the average return since disclosure is +198.65%, 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
2026-03-20	SELL	장외매도	김임준 Imjun Kim	CEO	-200.0K	₩17,260	-26.9%	₩3.5B ($2.4M)
2025-09-29	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	1.0K	₩10,830	+40.2%	₩11M ($8K)
2025-09-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	170	₩11,620	+30.6%	₩2M ($1K)
2025-09-05	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	150	₩11,600	+30.9%	₩2M ($1K)
2025-08-20	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	800	₩12,680	+19.7%	₩10M ($7K)
2025-08-01	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	153	₩13,860	+9.5%	₩2M ($1K)
2025-04-03	BUY	Market Buy	황길수 Hwang Gil-su	Internal director	10	₩7,000	+116.9%	₩70K ($49)
2025-04-02	BUY	Market Buy	황길수 Hwang Gil-su	Internal director	170	₩6,770	+124.2%	₩1M ($799)
2025-01-09	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	200	₩6,000	+153.0%	₩1M ($833)
2025-01-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	32	₩6,000	+153.0%	₩192K ($133)
2025-01-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	207	₩6,000	+153.0%	₩1M ($863)
2025-01-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	2	₩6,000	+153.0%	₩12K ($8)
2025-01-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	10	₩6,000	+153.0%	₩60K ($42)
2025-01-08	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	10	₩6,000	+153.0%	₩60K ($42)
2024-12-13	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	17	₩5,270	+188.1%	₩90K ($62)
2024-12-13	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	1	₩5,270	+188.1%	₩5K ($4)
2024-10-25	BUY	Market Buy	이동휘 Donghwi Lee	Managing Director	2	₩8,780	+72.9%	₩18K ($12)
2024-09-30	BUY	Market Buy	이동휘 Donghwi Lee	Managing Director	4	₩4,190	+262.3%	₩17K ($12)
2024-08-21	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	1	₩3,800	+299.5%	₩4K ($3)
2024-04-04	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	4	₩3,795	+300.0%	₩15K ($11)
2024-03-20	BUY	Market Buy	황길수 Hwang Gil-su	Internal director	190	₩3,600	+321.7%	₩684K ($475)
2024-03-11	BUY	Market Buy	황길수 Hwang Gil-su	Internal director	289	₩3,500	+333.7%	₩1M ($702)
2024-03-04	BUY	Market Buy	황길수 Hwang Gil-su	Internal director	349	₩3,600	+321.7%	₩1M ($873)
2024-02-27	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	150	₩3,300	+360.0%	₩495K ($344)
2024-02-23	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	100	₩3,495	+334.3%	₩350K ($243)
2024-02-23	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	200	₩3,495	+334.3%	₩699K ($485)
2024-02-23	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	119	₩3,495	+334.3%	₩416K ($289)
2023-05-30	BUY	Market Buy	이동휘 Donghwi Lee	Managing Director	1.2K	₩4,100	+270.2%	₩5M ($3K)
2023-05-26	BUY	Market Buy	이동휘 Donghwi Lee	Managing Director	8	₩4,100	+270.2%	₩33K ($23)
2022-07-20	BUY	Market Buy	김영훈 Younghoon Kim	Internal director	10	₩4,000	+279.5%	₩40K ($28)

Frequently asked questions

Who has been buying Jincotech stock?: 3 distinct insiders have filed 29 disclosed insider purchases in Jincotech (250030), most recently on 2026-03-20. 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 Jincotech have?: Jincotech has 29 buy-side and 0 sell-side disclosures on record, covering ₩41M ($28K) in total reported value, spanning 2022-07-20 to 2026-03-20.
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.