StockDriftsStockDriftsOsteonics (226400) has 6 disclosed insider purchases and 4 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩528M ($367K) in reported transaction value. The earliest filing StockDrifts holds for Osteonics is dated 2023-08-17; the most recent is 2026-03-06. 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 -1.03%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-03-06 | SELL | Market Sell | 오동선 Oh Dong-seon | moving | -4.1K | - | - | - |
| 2026-01-09 | BUY | Market Buy | 이동원 Lee Dong-won | CEO | 4.0K | ₩6,460 | +2.5% | ₩26M ($18K) |
| 2026-01-08 | BUY | Market Buy | 이동원 Lee Dong-won | CEO | 13.9K | ₩6,230 | +6.3% | ₩87M ($60K) |
| 2026-01-07 | BUY | Market Buy | 이동원 Lee Dong-won | CEO | 15.9K | ₩6,230 | +6.3% | ₩99M ($69K) |
| 2026-01-06 | BUY | Market Buy | 이동원 Lee Dong-won | CEO | 21.0K | ₩6,210 | +6.6% | ₩130M ($91K) |
| 2026-01-05 | BUY | Market Buy | 이동원 Lee Dong-won | CEO | 11.1K | ₩6,510 | +1.7% | ₩72M ($50K) |
| 2025-11-25 | BUY | Market Buy | 윤철수 Cheolsu Yoon | Managing Director | 14.0K | ₩6,010 | +10.2% | ₩84M ($58K) |
| 2025-03-13 | BUY | 신규보고 | 오동선 Oh Dong-seon | Managing Director | 4.1K | ₩7,200 | -8.1% | ₩29M ($20K) |
| 2025-02-03 | BUY | 신규보고 | 윤철수 Cheolsu Yoon | Managing Director | 36.0K | ₩8,110 | -18.4% | ₩292M ($203K) |
| 2024-12-31 | SELL | 임원퇴임 | 정의식 definition | Managing Director | -20.0K | ₩6,630 | +0.1% | ₩133M ($92K) |
| 2024-12-31 | SELL | 임원퇴임 | 정의식 definition | Managing Director | -18.0K | ₩6,630 | +0.1% | ₩119M ($83K) |
| 2024-03-08 | SELL | 시간외매매 | 이동원 Lee Dong-won | CEO | -600.0K | ₩5,320 | -24.4% | ₩3.2B ($2.2M) |
| 2024-01-04 | SELL | Market Sell | 서상호 Seo Sang-ho | moving | -1.0K | ₩5,120 | -29.3% | ₩5M ($4K) |
| 2023-08-31 | SELL | Market Sell | 서상호 Seo Sang-ho | moving | -1.0K | ₩6,280 | -5.4% | ₩6M ($4K) |
| 2023-08-17 | SELL | Market Sell | 서상호 Seo Sang-ho | moving | -3.0K | ₩6,130 | -8.0% | ₩18M ($13K) |
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 Osteonics. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.