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SFA Semiconductor 036540

Company
SFA반도체SFA Semiconductor
Insiders
3
Buys
3
Total Value
₩15M ($11K)
Avg Return
+64.66%
Last Filing
2026-07-16

SFA Semiconductor (036540) has 3 disclosed insider purchases and 0 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩15M ($11K) in reported transaction value. The earliest filing StockDrifts holds for SFA Semiconductor is dated 2015-12-21; the most recent is 2026-07-16. Across these filings the average return since disclosure is +64.66%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-07-16BUYMarket Buy
나덕주
Na Deok-ju
Managing Director1.0K₩5,620+0.0%₩6M ($4K)
2026-05-19BUYMarket Buy
오성국
Seongguk Oh
Managing Director1---
2025-06-10BUYMarket Buy
고병길
Go Byeong-gil
Managing Director3.1K₩3,105+129.3%₩10M ($7K)
2015-12-21BUY신규선임
고병길
Go Byeong-gil
Managing Director270₩2,520+182.5%₩680K ($473)

Frequently asked questions

Who has been buying SFA Semiconductor stock?
3 distinct insiders have filed 3 disclosed insider purchases in SFA Semiconductor (036540), most recently on 2026-07-16. 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 SFA Semiconductor have?
SFA Semiconductor has 3 buy-side and 0 sell-side disclosures on record, covering ₩15M ($11K) in total reported value, spanning 2015-12-21 to 2026-07-16.
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.