StockDriftsStockDriftsCore Stem Chem On (166480) has 6 disclosed insider purchases and 7 disclosed disposals on record, filed by 6 distinct insiders. Together those filings cover ₩2.2B ($1.5M) in reported transaction value. The earliest filing StockDrifts holds for Core Stem Chem On is dated 2024-03-14; the most recent is 2026-07-01. Across these filings the average return since disclosure is +2.67%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-08-31 | SELL | 임원퇴임 | 권광순 Kwon Gwang-soon | president | -47.2K | ₩2,100 | -8.8% | ₩99M ($69K) |
| 2026-08-31 | SELL | 임원퇴임 | 권광순 Kwon Gwang-soon | president | -1.5M | ₩2,100 | -8.8% | ₩3.2B ($2.2M) |
| 2026-07-01 | BUY | 신규선임 | 김귀주 Kim Gui-ju | moving | 3.5K | ₩2,200 | -13.7% | ₩8M ($5K) |
| 2025-12-24 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 62.5K | ₩1,762 | +96.4% | ₩110M ($76K) |
| 2025-12-23 | BUY | 행사가액조정 | 이태용 Taeyong Lee | moving | 557.8K | ₩1,783 | +94.0% | ₩995M ($691K) |
| 2025-12-23 | BUY | 행사가액조정 | 권광순 Kwon Gwang-soon | president | 1.3M | ₩1,783 | +94.0% | ₩2.3B ($1.6M) |
| 2025-12-09 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 139.7K | ₩1,720 | +101.2% | ₩240M ($167K) |
| 2025-12-08 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 10.0K | ₩1,798 | +92.4% | ₩18M ($12K) |
| 2025-12-05 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 455.0K | ₩1,898 | +82.3% | ₩864M ($600K) |
| 2025-12-03 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 293.3K | ₩1,581 | +118.8% | ₩464M ($322K) |
| 2025-12-02 | BUY | Market Buy | 양길안 Yang Gil-an | CEO | 230.0K | ₩1,524 | +127.0% | ₩351M ($243K) |
| 2025-11-12 | BUY | 유상신주취득 | 양길안 Yang Gil-an | CEO | 4.4K | ₩1,480 | +133.8% | ₩6M ($4K) |
| 2025-11-12 | BUY | 유상신주취득 | 송시환 Song Si-hwan | president | 20.0K | ₩1,480 | +133.8% | ₩30M ($21K) |
| 2025-11-12 | BUY | 유상신주취득 | 김종일 Kim Jong-il | Managing Director | 3.0K | ₩1,480 | +133.8% | ₩4M ($3K) |
| 2025-11-12 | BUY | 유상신주취득 | 김경숙 Kim Kyung-sook | standing advisor | 743.9K | ₩1,480 | +133.8% | ₩1.1B ($765K) |
| 2025-11-12 | SELL | 기타 | 김종일 Kim Jong-il | Managing Director | -2.5K | ₩1,480 | -133.8% | ₩4M ($3K) |
| 2025-11-12 | SELL | 기타 | 김문순 Kim Moon-soon | moving | -617 | ₩1,480 | -133.8% | ₩913K ($634) |
| 2025-11-12 | SELL | 기타 | 김경숙 Kim Kyung-sook | standing advisor | -743.9K | ₩1,480 | -133.8% | ₩1.1B ($765K) |
| 2025-11-12 | SELL | 기타 | 송시환 Song Si-hwan | president | -20.0K | ₩1,480 | -133.8% | ₩30M ($21K) |
| 2025-11-12 | SELL | 기타 | 송시환 Song Si-hwan | president | -187.8K | ₩1,480 | -133.8% | ₩278M ($193K) |
| 2025-11-12 | SELL | 기타 | 양길안 Yang Gil-an | CEO | -3.6K | ₩1,480 | -133.8% | ₩5M ($4K) |
| 2025-11-12 | SELL | 기타 | 이령아 Lee Ryeong-a | general manager | -1.3K | ₩1,480 | -133.8% | ₩2M ($1K) |
| 2025-10-22 | SELL | Market Sell | 김문순 Kim Moon-soon | moving | -618 | ₩1,680 | -106.0% | ₩1M ($721) |
| 2025-10-22 | SELL | Market Sell | 길기현 Gil Ki-hyeon | Managing Director | -12.0K | ₩1,680 | -106.0% | ₩20M ($14K) |
| 2025-10-21 | SELL | 장외매도 | 김경숙 Kim Kyung-sook | standing advisor | -867.9K | ₩1,648 | -110.0% | ₩1.4B ($993K) |
| 2025-10-20 | SELL | Market Sell | 이태용 Taeyong Lee | moving | -9.2K | ₩1,631 | -112.1% | ₩15M ($10K) |
| 2025-10-20 | SELL | Market Sell | 권광순 Kwon Gwang-soon | president | -33.6K | ₩1,631 | -112.1% | ₩55M ($38K) |
| 2025-10-16 | SELL | Market Sell | 길기현 Gil Ki-hyeon | Managing Director | -3.0K | ₩1,679 | -106.1% | ₩5M ($3K) |
| 2025-10-16 | SELL | Market Sell | 이태용 Taeyong Lee | moving | -5.0K | ₩1,679 | -106.1% | ₩8M ($6K) |
| 2025-10-15 | SELL | 시간외매매 | 김경숙 Kim Kyung-sook | standing advisor | -796.2K | ₩1,615 | -114.2% | ₩1.3B ($893K) |
| 2025-10-13 | SELL | 장외매도 | 김경숙 Kim Kyung-sook | standing advisor | -867.9K | ₩1,647 | -110.1% | ₩1.4B ($993K) |
| 2025-09-30 | BUY | 기타 | 김경숙 Kim Kyung-sook | standing advisor | 2.5M | ₩1,727 | +100.3% | ₩4.3B ($3.0M) |
| 2025-09-30 | BUY | PROGRAM | 김종일 Kim Jong-il | Managing Director | 2.5K | ₩1,727 | +100.3% | ₩4M ($3K) |
| 2025-09-30 | BUY | PROGRAM | 이태용 Taeyong Lee | moving | 14.2K | ₩1,727 | +100.3% | ₩25M ($17K) |
| 2025-09-30 | BUY | PROGRAM | 길기현 Gil Ki-hyeon | Managing Director | 15.0K | ₩1,727 | +100.3% | ₩26M ($18K) |
| 2025-09-30 | BUY | PROGRAM | 양길안 Yang Gil-an | Chairman | 3.6K | ₩1,727 | +100.3% | ₩6M ($4K) |
| 2025-09-30 | BUY | PROGRAM | 김문순 Kim Moon-soon | moving | 1.2K | ₩1,727 | +100.3% | ₩2M ($1K) |
| 2025-09-30 | BUY | PROGRAM | 송시환 Song Si-hwan | president | 207.8K | ₩1,727 | +100.3% | ₩359M ($249K) |
| 2025-09-30 | BUY | PROGRAM | 이령아 Lee Ryeong-a | general manager | 1.3K | ₩1,727 | +100.3% | ₩2M ($2K) |
| 2025-09-30 | BUY | PROGRAM | 권광순 Kwon Gwang-soon | president | 33.6K | ₩1,727 | +100.3% | ₩58M ($40K) |
| 2025-04-28 | SELL | 풋옵션권리행사에따른주식처분 | 이태용 Taeyong Lee | moving | -64.3K | ₩2,890 | -19.7% | ₩186M ($129K) |
| 2025-04-28 | SELL | 풋옵션권리행사에따른주식처분 | 권광순 Kwon Gwang-soon | president | -151.1K | ₩2,890 | -19.7% | ₩437M ($303K) |
| 2024-10-01 | BUY | 신규선임 | 이령아 Lee Ryeong-a | general manager | 1.9K | ₩10,764 | -67.9% | ₩20M ($14K) |
| 2024-07-18 | SELL | 장외매도 | 이태용 Taeyong Lee | moving | -160.7K | ₩10,568 | +67.3% | ₩1.7B ($1.2M) |
| 2024-07-18 | SELL | 장외매도 | 권광순 Kwon Gwang-soon | president | -377.7K | ₩10,568 | +67.3% | ₩4.0B ($2.8M) |
| 2024-05-23 | SELL | Market Sell | 박건우 Park Geon-woo | Outside Director | -1.1K | ₩9,841 | +64.8% | ₩11M ($8K) |
| 2024-03-14 | SELL | 증여 | 김경숙 Kim Kyung-sook | standing advisor | -50.0K | ₩8,798 | +60.7% | ₩440M ($305K) |
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.