Who has been buying Kostek System stock?

6 distinct insiders have filed 13 disclosed insider purchases in Kostek System (169670), most recently on 2024-06-20. 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 Kostek System have?

Kostek System has 13 buy-side and 0 sell-side disclosures on record, covering ₩72M ($50K) in total reported value, spanning 2023-03-29 to 2024-06-20.

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.

Kostek System 169670

Company

코스텍시스템Kostek System

Insiders

Buys

Total Value

₩72M ($50K)

Avg Return

-53.99%

Last Filing

2024-06-20

Kostek System (169670) has 13 disclosed insider purchases and 0 disclosed disposals on record, filed by 6 distinct insiders. Together those filings cover ₩72M ($50K) in reported transaction value. The earliest filing StockDrifts holds for Kostek System is dated 2023-03-29; the most recent is 2024-06-20. Across these filings the average return since disclosure is -53.99%, 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
2024-06-20	BUY	Market Buy	배준호 Junho Bae	CEO	3.0K	₩12,600	-52.5%	₩38M ($26K)
2024-04-17	BUY	Market Buy	배주섭 Bae Joo-seop	Managing Director	80	₩13,270	-54.9%	₩1M ($737)
2024-04-17	BUY	Market Buy	이원규 Wonkyu Lee	Managing Director	50	₩13,270	-54.9%	₩664K ($461)
2024-04-11	BUY	Market Buy	신재혁 Jaehyuk Shin	Managing Director	100	₩13,200	-54.6%	₩1M ($917)
2024-04-11	BUY	Market Buy	이종영 Jongyoung Lee	Managing Director	100	₩13,200	-54.6%	₩1M ($917)
2024-04-09	BUY	신규보고	이종영 Jongyoung Lee	Managing Director	12.0K	₩15,250	-60.7%	₩183M ($127K)
2024-04-09	BUY	신규보고	배주섭 Bae Joo-seop	Managing Director	12.0K	₩15,250	-60.7%	₩183M ($127K)
2024-04-09	BUY	신규보고	신재혁 Jaehyuk Shin	Managing Director	5.1K	₩15,250	-60.7%	₩78M ($54K)
2024-04-05	BUY	Market Buy	김용섭 Yongseop Kim	Managing Director	337	₩14,590	-58.9%	₩5M ($3K)
2024-04-03	BUY	Market Buy	배준호 Junho Bae	CEO	1.0K	₩12,560	-52.3%	₩13M ($9K)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	100	₩12,800	-53.2%	₩1M ($889)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	32	₩12,800	-53.2%	₩410K ($284)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	175	₩12,800	-53.2%	₩2M ($2K)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	600	₩12,800	-53.2%	₩8M ($5K)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	11	₩12,800	-53.2%	₩141K ($98)
2024-04-01	BUY	Market Buy	배준호 Junho Bae	CEO	82	₩12,800	-53.2%	₩1M ($729)
2023-03-29	BUY	신규보고	김용섭 Yongseop Kim	Managing Director	7.7K	₩6,800	-11.9%	₩53M ($37K)

Frequently asked questions

Who has been buying Kostek System stock?: 6 distinct insiders have filed 13 disclosed insider purchases in Kostek System (169670), most recently on 2024-06-20. 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 Kostek System have?: Kostek System has 13 buy-side and 0 sell-side disclosures on record, covering ₩72M ($50K) in total reported value, spanning 2023-03-29 to 2024-06-20.
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.