StockDriftsStockDriftsMD Device (226590) has 0 disclosed insider purchases and 7 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩775M ($538K) in reported transaction value. The earliest filing StockDrifts holds for MD Device is dated 2025-03-07; the most recent is 2026-05-26. 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 -67.47%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-05-26 | SELL | Market Sell | 주우식 Joo Woo-sik | Other non-executive directors | -215 | ₩21,650 | +14.2% | ₩5M ($3K) |
| 2026-04-17 | BUY | 주식매수청구권 행사 | 최종민 Choi Jong-min | CFO | 60.0K | ₩28,550 | -3.1% | ₩1.7B ($1.2M) |
| 2026-04-17 | BUY | 주식매수청구권 행사 | 주영대 Youngdae Joo | CTO | 6.0K | ₩28,550 | -3.1% | ₩171M ($119K) |
| 2026-04-17 | BUY | 주식매수청구권 행사 | 주우식 Joo Woo-sik | Other non-executive directors | 20.0K | ₩28,550 | -3.1% | ₩571M ($397K) |
| 2026-03-18 | SELL | Market Sell | 주영대 Youngdae Joo | CTO | -6.0K | - | - | - |
| 2025-09-30 | SELL | Market Sell | 위세욱 Wi Se-wook | thanks | -3.0K | ₩22,100 | -24.0% | ₩66M ($46K) |
| 2025-09-26 | SELL | Market Sell | 위세욱 Wi Se-wook | thanks | -2.0K | ₩21,900 | -25.1% | ₩44M ($30K) |
| 2025-09-12 | SELL | Market Sell | 위세욱 Wi Se-wook | thanks | -9.0K | ₩15,490 | -76.9% | ₩139M ($97K) |
| 2025-09-10 | SELL | Market Sell | 옐로씨펀드 Yellow Sea Fund | Other non-executive directors | -40.0K | ₩11,390 | -140.6% | ₩456M ($316K) |
| 2025-09-08 | SELL | Market Sell | 위세욱 Wi Se-wook | thanks | -6.0K | ₩10,850 | -152.5% | ₩65M ($45K) |
| 2025-03-07 | BUY | 신규상장 | 주영대 Youngdae Joo | CTO | 10.0K | ₩11,100 | +146.8% | ₩111M ($77K) |
| 2025-03-07 | BUY | 신규상장 | 위세욱 Wi Se-wook | thanks | 20.0K | ₩11,100 | +146.8% | ₩222M ($154K) |
| 2025-03-07 | BUY | 신규상장 | 옐로씨펀드 Yellow Sea Fund | Other non-executive directors | 40.0K | ₩11,100 | +146.8% | ₩444M ($308K) |
| 2025-03-07 | BUY | 신규상장 | 조호경 Jo Ho-kyung | CEO | 3.2M | ₩11,100 | +146.8% | ₩35.7B ($24.8M) |
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 MD Device. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.