Who has been buying Haesung Optics stock?

1 distinct insiders have filed 0 disclosed insider purchases in Haesung Optics (076610), most recently on 2025-06-14. 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 Haesung Optics have?

Haesung Optics has 0 buy-side and 3 sell-side disclosures on record, covering ₩606M ($421K) in total reported value, spanning 2023-12-19 to 2025-06-14.

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.

Haesung Optics 076610

Company

해성옵틱스Haesung Optics

Insiders

Buys

Total Value

₩606M ($421K)

Avg Return

-52.62%

Last Filing

2025-06-14

Haesung Optics (076610) has 0 disclosed insider purchases and 3 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩606M ($421K) in reported transaction value. The earliest filing StockDrifts holds for Haesung Optics is dated 2023-12-19; the most recent is 2025-06-14. Across these filings the average return since disclosure is -52.62%, 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
2025-06-14	BUY	유상신주취득	오영현 Younghyun Oh	president	447.7K	₩689	+61.1%	₩308M ($214K)
2025-05-23	SELL	Market Sell	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	-197.1K	₩723	-53.5%	₩143M ($99K)
2025-05-22	SELL	Market Sell	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	-120.0K	₩727	-52.7%	₩87M ($61K)
2025-05-21	SELL	Market Sell	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	-514.6K	₩732	-51.6%	₩377M ($262K)
2025-05-16	SELL	장외매도	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	-3.7M	₩750	-48.0%	₩2.8B ($1.9M)
2025-05-12	BUY	기타	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	4.5M	₩785	+41.4%	₩3.6B ($2.5M)
2023-12-19	SELL	자본감소	오에이치얼머스리스트럭처링투자조합1호 OH Realm Restructuring Investment Association No. 1	-	-25.6M	₩1,450	+23.4%	₩37.1B ($25.8M)

Frequently asked questions

Who has been buying Haesung Optics stock?: 1 distinct insiders have filed 0 disclosed insider purchases in Haesung Optics (076610), most recently on 2025-06-14. 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 Haesung Optics have?: Haesung Optics has 0 buy-side and 3 sell-side disclosures on record, covering ₩606M ($421K) in total reported value, spanning 2023-12-19 to 2025-06-14.
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.