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4S 189690

Company
포시에스4S
Insiders
2
Buys
5
Total Value
₩651M ($452K)
Avg Return
-5.01%
Last Filing
2026-06-30

4S (189690) has 5 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩651M ($452K) in reported transaction value. The earliest filing StockDrifts holds for 4S is dated 2024-04-30; the most recent is 2026-06-30. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is -5.01%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-06-30BUYMarket Buy
조종민
Jo Jung-min
CEO257.8K₩1,744-6.0%₩450M ($312K)
2025-11-11BUYMarket Buy
박미경
Park Mi-kyung
CEO36.8K₩2,110-4.3%₩78M ($54K)
2025-11-10BUYMarket Buy
박미경
Park Mi-kyung
CEO7.6K₩2,130-5.2%₩16M ($11K)
2025-11-07BUYMarket Buy
박미경
Park Mi-kyung
CEO27.0K₩2,110-4.3%₩57M ($40K)
2025-11-05BUYMarket Buy
박미경
Park Mi-kyung
CEO23.8K₩2,135-5.4%₩51M ($35K)
2024-04-30SELL임원퇴임
이희상
Lee Hee-sang
CEO-127.0K₩2,790+27.6%₩354M ($246K)

Frequently asked questions

Who has been buying 4S stock?
2 distinct insiders have filed 5 disclosed insider purchases in 4S (189690), most recently on 2026-06-30. 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 4S have?
4S has 5 buy-side and 0 sell-side disclosures on record, covering ₩651M ($452K) in total reported value, spanning 2024-04-30 to 2026-06-30.
Where does StockDrifts get 4S insider data?
From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?
Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for 4S. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.