Who has been buying Ercos stock?

6 distinct insiders have filed 0 disclosed insider purchases in Ercos (435570), most recently on 2026-03-04. 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 Ercos have?

Ercos has 0 buy-side and 11 sell-side disclosures on record, covering ₩1.2B ($852K) in total reported value, spanning 2025-02-28 to 2026-03-04.

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.

Ercos 435570

Company

에르코스Ercos

Insiders

Buys

Total Value

₩1.2B ($852K)

Avg Return

-12.97%

Last Filing

2026-03-04

Ercos (435570) has 0 disclosed insider purchases and 11 disclosed disposals on record, filed by 6 distinct insiders. Together those filings cover ₩1.2B ($852K) in reported transaction value. The earliest filing StockDrifts holds for Ercos is dated 2025-02-28; the most recent is 2026-03-04. Across these filings the average return since disclosure is -12.97%, 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
2026-03-04	SELL	Market Sell	박진우 Jinwoo Park	-	-5.0K	-	-	-
2025-12-22	SELL	Market Sell	배민환 Minhwan Bae	Former CEO and Chairman	-2.0K	₩12,460	-9.3%	₩25M ($17K)
2025-12-19	SELL	Market Sell	김영길 Kim Young-gil	-	-22.2K	₩12,740	-6.9%	₩283M ($196K)
2025-12-19	SELL	Market Sell	배민환 Minhwan Bae	Former CEO and Chairman	-5.0K	₩12,740	-6.9%	₩64M ($44K)
2025-09-04	SELL	Market Sell	박상일 Park Sang-il	Sales Director	-1.5K	₩12,100	-12.6%	₩18M ($13K)
2025-09-03	SELL	Market Sell	김영길 Kim Young-gil	-	-500	₩11,630	-17.1%	₩6M ($4K)
2025-09-03	SELL	Market Sell	박상일 Park Sang-il	Sales Director	-6.1K	₩11,630	-17.1%	₩71M ($50K)
2025-09-02	SELL	Market Sell	배민환 Minhwan Bae	Former CEO and Chairman	-52.8K	₩11,850	-14.9%	₩625M ($434K)
2025-09-02	SELL	Market Sell	윤홍근 Honggeun Yoon	vice president	-2.0K	₩11,850	-14.9%	₩24M ($16K)
2025-09-02	SELL	Market Sell	박상일 Park Sang-il	Sales Director	-2.4K	₩11,850	-14.9%	₩28M ($19K)
2025-09-02	SELL	Market Sell	박범순 Park Beom-soon	-	-7.0K	₩11,850	-14.9%	₩83M ($58K)
2025-02-28	BUY	PROGRAM	배민환 Minhwan Bae	Former CEO and Chairman	62.8K	₩10,200	+33.5%	₩640M ($445K)
2025-02-28	BUY	PROGRAM	박상일 Park Sang-il	Sales Director	10.0K	₩10,200	+33.5%	₩102M ($71K)
2025-02-28	BUY	PROGRAM	박범순 Park Beom-soon	-	10.0K	₩10,200	+33.5%	₩102M ($71K)
2025-02-28	BUY	PROGRAM	윤홍근 Honggeun Yoon	vice president	2.0K	₩10,200	+33.5%	₩20M ($14K)
2025-02-28	BUY	PROGRAM	김슬기 Seulgi Kim	CEO	3.6M	₩10,200	+33.5%	₩36.7B ($25.5M)
2025-02-28	BUY	PROGRAM	김영길 Kim Young-gil	-	37.6K	₩10,200	+33.5%	₩384M ($267K)
2025-02-28	BUY	PROGRAM	박진우 Jinwoo Park	-	10.0K	₩10,200	+33.5%	₩102M ($71K)
2025-02-28	BUY	PROGRAM	다솔 Dasol	-	2.1M	₩10,200	+33.5%	₩21.1B ($14.7M)

Frequently asked questions

Who has been buying Ercos stock?: 6 distinct insiders have filed 0 disclosed insider purchases in Ercos (435570), most recently on 2026-03-04. 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 Ercos have?: Ercos has 0 buy-side and 11 sell-side disclosures on record, covering ₩1.2B ($852K) in total reported value, spanning 2025-02-28 to 2026-03-04.
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.