StockDriftsStockDriftsJeju Semiconductor (080220) has 0 disclosed insider purchases and 1 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩422M ($293K) in reported transaction value. The earliest filing StockDrifts holds for Jeju Semiconductor is dated 2024-04-30; the most recent is 2026-05-15. Across these filings the average return since disclosure is -6.99%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-05-15 | BUY | 기타 | 박성식 Seongsik Park | CEO | 32.9K | ₩82,300 | +33.3% | ₩2.7B ($1.9M) |
| 2026-05-15 | BUY | 기타 | 조형섭 Cho Hyeong-seop | CEO | 3.9K | ₩82,300 | +33.3% | ₩323M ($224K) |
| 2026-04-27 | BUY | 기타 | 조형섭 Cho Hyeong-seop | CEO | 12.5K | ₩58,400 | -7.7% | ₩731M ($508K) |
| 2026-04-27 | BUY | 기타 | 조형섭 Cho Hyeong-seop | CEO | 17.3K | ₩58,400 | -7.7% | ₩1.0B ($700K) |
| 2026-04-27 | BUY | 기타 | 박성식 Seongsik Park | CEO | 105.2K | ₩58,400 | -7.7% | ₩6.1B ($4.3M) |
| 2026-04-27 | BUY | 기타 | 박성식 Seongsik Park | CEO | 144.9K | ₩58,400 | -7.7% | ₩8.5B ($5.9M) |
| 2026-02-06 | SELL | Market Sell | 황주원 Hwang Joo-won | vice president | -10.0K | ₩42,200 | -7.0% | ₩422M ($293K) |
| 2025-11-17 | BUY | 신규선임 | 조형섭 Cho Hyeong-seop | moving | 424.7K | ₩19,720 | +129.0% | ₩8.4B ($5.8M) |
| 2024-04-30 | SELL | 증여 | 조형섭 Cho Hyeong-seop | CEO | -100.0K | ₩22,450 | -101.1% | ₩2.2B ($1.6M) |
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.