Who has been buying Keystron stock?

0 distinct insiders have filed 0 disclosed insider purchases in Keystron (475430), most recently on 2026-01-19. 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 Keystron have?

Keystron has 0 buy-side and 0 sell-side disclosures on record, spanning 2026-01-19 to 2026-01-19.

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.

Keystron 475430

Company

키스트론Keystron

Insiders

Buys

Total Value

—

Avg Return

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Last Filing

2026-01-19

Keystron (475430) has 0 disclosed insider purchases and 0 disclosed disposals on record, filed by 0 distinct insiders. The earliest filing StockDrifts holds for Keystron is dated 2026-01-19; the most recent is 2026-01-19.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-08-14	BUY	신규보고	신가윤 Shin Ga-yoon	-	72.9K	₩4,575	+0.0%	₩334M ($232K)
2026-08-14	BUY	신규보고	신재명 Jaemyung Shin	CEO	315.5K	₩4,575	+0.0%	₩1.4B ($1.0M)
2026-08-14	BUY	수증	신재명 Jaemyung Shin	CEO	749.6K	₩4,575	+0.0%	₩3.4B ($2.4M)
2026-08-14	BUY	수증	신가윤 Shin Ga-yoon	-	92.3K	₩4,575	+0.0%	₩422M ($293K)
2026-08-14	SELL	증여	홍영철 Youngcheol Hong	-	-842.0K	₩4,575	+0.0%	₩3.9B ($2.7M)
2026-08-10	BUY	장외매수	키스트론홀딩스 Keystron Holdings	-	1.1M	₩4,535	+0.1%	₩4.8B ($3.4M)
2026-08-10	BUY	장외매수	키스트론홀딩스 Keystron Holdings	-	455.8K	₩4,535	+0.1%	₩2.1B ($1.4M)
2026-08-10	SELL	장외매도	키스와이어홀딩스 Kisswire Holdings	-	-940.5K	₩4,535	-0.1%	₩4.3B ($3.0M)
2026-08-10	BUY	장외매수	홍희연 Hong Hee-yeon	-	940.5K	₩4,535	+0.1%	₩4.3B ($3.0M)
2026-08-10	SELL	장외매도	홍덕산업 Hongdeok Industry	-	-1.1M	₩4,535	-0.1%	₩4.8B ($3.4M)
2026-08-10	SELL	장외매도	홍석표 Hong Seok-pyo	-	-455.8K	₩4,535	-0.1%	₩2.1B ($1.4M)
2026-01-19	BUY	장외매수	키스트론홀딩스 Keystron Holdings	-	960.3K	₩4,485	+11.0%	₩4.3B ($3.0M)
2026-01-19	SELL	장외매도	홍석표 Hong Seok-pyo	-	-960.3K	₩4,485	-11.0%	₩4.3B ($3.0M)
2026-01-19	SELL	증여	홍영철 Youngcheol Hong	-	-1.1M	₩4,485	-11.0%	₩5.0B ($3.5M)
2026-01-19	BUY	수증	홍희연 Hong Hee-yeon	-	1.1M	₩4,485	+11.0%	₩5.0B ($3.5M)
2026-01-19	BUY	장외매수	키스트론홀딩스 Keystron Holdings	-	1.1M	₩4,485	+11.0%	₩4.8B ($3.3M)
2026-01-19	SELL	장외매도	홍덕산업 Hongdeok Industry	-	-1.1M	₩4,485	-11.0%	₩4.8B ($3.3M)

Frequently asked questions

Who has been buying Keystron stock?: 0 distinct insiders have filed 0 disclosed insider purchases in Keystron (475430), most recently on 2026-01-19. 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 Keystron have?: Keystron has 0 buy-side and 0 sell-side disclosures on record, spanning 2026-01-19 to 2026-01-19.
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.