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S1 012750

Company
에스원S1
Insiders
2
Buys
3
Total Value
₩303M ($211K)
Avg Return
+2.63%
Last Filing
2026-07-06

S1 (012750) has 3 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩303M ($211K) in reported transaction value. The earliest filing StockDrifts holds for S1 is dated 2024-12-04; the most recent is 2026-07-06. 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 +2.63%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

DateTypeSourceInsiderPositionSharesPrice at filingReturnValue
2026-07-06BUYMarket Buy
이민정
Lee Min-jeong
vice president666₩73,000-1.2%₩50M ($35K)
2026-05-08BUYMarket Buy
정해린
Jeong Hae-rin
president1.0K₩72,900+4.0%₩73M ($51K)
2026-05-07BUYMarket Buy
정해린
Jeong Hae-rin
president2.5K₩72,100+5.1%₩180M ($125K)
2024-12-04BUY신규선임
김현국
Kim Hyeon-guk
Managing Director159₩60,700+52.7%₩10M ($7K)

Frequently asked questions

Who has been buying S1 stock?
2 distinct insiders have filed 3 disclosed insider purchases in S1 (012750), most recently on 2026-07-06. 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 S1 have?
S1 has 3 buy-side and 0 sell-side disclosures on record, covering ₩303M ($211K) in total reported value, spanning 2024-12-04 to 2026-07-06.
Where does StockDrifts get S1 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 S1. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.