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. 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 +2.67%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 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 | 김경숙 Kim Kyung-sook | standing advisor | 743.9K | ₩1,480 | +133.8% | ₩1.1B ($765K) |
| 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 | 양길안 Yang Gil-an | CEO | 4.4K | ₩1,480 | +133.8% | ₩6M ($4K) |
| 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 | 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) |
| 2025-11-12 | 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) |
| 2025-10-22 | 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 | 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 | 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 | 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 is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for Core Stem Chem On. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.