StockDriftsStockDriftsRF Materials (327260) has 53 disclosed insider purchases and 14 disclosed disposals on record, filed by 6 distinct insiders. Together those filings cover ₩4.5B ($3.1M) in reported transaction value. The earliest filing StockDrifts holds for RF Materials is dated 2024-03-11; the most recent is 2026-07-09. Across these filings the average return since disclosure is +463.35%, measured from each filing date to the latest available close.
| Date | Type | Source | Insider | Position | Shares | Price at filing | Return | Value |
|---|---|---|---|---|---|---|---|---|
| 2026-09-14 | SELL | Market Sell | 김시남 Kim Si-nam | Director of Research and Development Planning Division | -10.0K | ₩44,100 | -12.0% | ₩441M ($306K) |
| 2026-07-27 | BUY | PROGRAM | 김시남 Kim Si-nam | Director of Research and Development Planning Division | 26.3K | ₩23,700 | +26.4% | ₩624M ($433K) |
| 2026-07-27 | BUY | PROGRAM | 박근영 Park Geun-young | Head of Research and Development Division | 2.5K | ₩23,700 | +26.4% | ₩60M ($42K) |
| 2026-07-27 | BUY | PROGRAM | 김주현 Joohyun Kim | Internal director | 4.8K | ₩23,700 | +26.4% | ₩113M ($79K) |
| 2026-07-27 | BUY | PROGRAM | 남동우 Nam Dongwoo | CEO | 46.6K | ₩23,700 | +26.4% | ₩1.1B ($767K) |
| 2026-07-27 | BUY | PROGRAM | RFHIC | - | 3.7M | ₩23,700 | +26.4% | ₩88.6B ($61.5M) |
| 2026-07-27 | BUY | PROGRAM | 김종기 Kim Jong-gi | Each representative director | 6.0K | ₩23,700 | +26.4% | ₩142M ($99K) |
| 2026-07-09 | BUY | 유상신주취득 | 김시남 Kim Si-nam | Director of Research and Development Planning Division | 289 | ₩44,650 | +3.0% | ₩13M ($9K) |
| 2026-06-26 | SELL | 기타 | RFHIC | - | -207.7K | ₩52,000 | +4.8% | ₩10.8B ($7.5M) |
| 2026-06-26 | BUY | 유상신주취득 | RFHIC | - | 207.7K | ₩52,000 | -4.8% | ₩10.8B ($7.5M) |
| 2026-06-26 | SELL | 기타 | 김시남 Kim Si-nam | Director of Research and Development Planning Division | -1.4K | ₩52,000 | +4.8% | ₩75M ($52K) |
| 2026-06-26 | BUY | 유상신주취득 | 김시남 Kim Si-nam | Director of Research and Development Planning Division | 1.4K | ₩52,000 | -4.8% | ₩75M ($52K) |
| 2026-06-09 | SELL | Market Sell | 김종기 Kim Jong-gi | Each representative director | -353 | ₩71,100 | +5.2% | ₩25M ($17K) |
| 2026-06-08 | SELL | Market Sell | 남동우 Nam Dongwoo | CEO | -94 | ₩68,000 | +0.9% | ₩6M ($4K) |
| 2026-06-05 | SELL | Market Sell | 김주현 Joohyun Kim | Internal director | -281 | ₩76,600 | +12.0% | ₩22M ($15K) |
| 2026-06-05 | SELL | Market Sell | 박근영 Park Geun-young | Head of Research and Development Division | -149 | ₩76,600 | +12.0% | ₩11M ($8K) |
| 2026-06-05 | SELL | Market Sell | 남동우 Nam Dongwoo | CEO | -2.6K | ₩76,600 | +12.0% | ₩203M ($141K) |
| 2026-05-26 | BUY | PROGRAM | 김주현 Joohyun Kim | Internal director | 281 | ₩97,400 | -22.7% | ₩27M ($19K) |
| 2026-05-26 | BUY | PROGRAM | 박근영 Park Geun-young | Head of Research and Development Division | 149 | ₩97,400 | -22.7% | ₩15M ($10K) |
| 2026-05-26 | BUY | PROGRAM | 김종기 Kim Jong-gi | Each representative director | 353 | ₩97,400 | -22.7% | ₩34M ($24K) |
| 2026-05-26 | BUY | PROGRAM | RFHIC | - | 207.7K | ₩97,400 | -22.7% | ₩20.2B ($14.1M) |
| 2026-05-26 | BUY | PROGRAM | 김시남 Kim Si-nam | Director of Research and Development Planning Division | 1.4K | ₩97,400 | -22.7% | ₩141M ($98K) |
| 2026-05-26 | BUY | PROGRAM | 남동우 Nam Dongwoo | CEO | 2.7K | ₩97,400 | -22.7% | ₩267M ($186K) |
| 2026-02-11 | SELL | Market Sell | 김종기 Kim Jong-gi | Each representative director | -904 | ₩41,800 | -10.7% | ₩38M ($26K) |
| 2026-02-11 | SELL | Market Sell | 김시남 Kim Si-nam | Director of Research and Development Planning Division | -9.0K | ₩41,800 | -10.7% | ₩376M ($261K) |
| 2026-02-11 | BUY | Market Buy | 김시남 Kim Si-nam | Director of Research and Development Planning Division | 269 | ₩41,800 | +10.7% | ₩11M ($8K) |
| 2026-02-10 | SELL | Market Sell | 남동우 Nam Dongwoo | Non-executive director | -31.0K | ₩40,900 | -13.1% | ₩1.3B ($880K) |
| 2026-02-10 | SELL | Market Sell | 김시남 Kim Si-nam | Director of Research and Development Planning Division | -6.8K | ₩40,900 | -13.1% | ₩276M ($192K) |
| 2026-02-10 | SELL | Market Sell | 박근영 Park Geun-young | Head of Research and Development Division | -1.6K | ₩40,900 | -13.1% | ₩65M ($45K) |
| 2026-02-10 | SELL | Market Sell | 김주현 Joohyun Kim | Internal director | -3.2K | ₩40,900 | -13.1% | ₩130M ($90K) |
| 2026-01-09 | BUY | 주식매수청구권 행사 | 김주현 Joohyun Kim | Internal director | 400 | ₩23,650 | +95.6% | ₩9M ($7K) |
| 2026-01-09 | BUY | 주식매수청구권 행사 | 김종기 Kim Jong-gi | Each CEO | 5.9K | ₩23,650 | +95.6% | ₩140M ($97K) |
| 2026-01-09 | BUY | 주식매수청구권 행사 | 남동우 Nam Dongwoo | Non-executive director | 1.6K | ₩23,650 | +95.6% | ₩38M ($26K) |
| 2026-01-07 | SELL | Market Sell | 김주현 Joohyun Kim | Internal director | -240 | ₩24,850 | -86.1% | ₩6M ($4K) |
| 2025-09-22 | SELL | Market Sell | 김주현 Joohyun Kim | Internal director | -350 | ₩14,260 | -224.3% | ₩5M ($3K) |
| 2025-09-19 | SELL | Market Sell | 김주현 Joohyun Kim | Internal director | -350 | ₩13,460 | -243.6% | ₩5M ($3K) |
| 2025-03-24 | BUY | Market Buy | RFHIC | - | 4.4K | ₩6,510 | +610.5% | ₩29M ($20K) |
| 2025-03-21 | BUY | Market Buy | RFHIC | - | 2.0K | ₩6,470 | +614.8% | ₩13M ($9K) |
| 2025-03-20 | BUY | Market Buy | RFHIC | - | 2.9K | ₩6,660 | +594.4% | ₩19M ($13K) |
| 2025-03-19 | BUY | Market Buy | RFHIC | - | 10.0K | ₩6,950 | +565.5% | ₩70M ($48K) |
| 2025-03-18 | BUY | Market Buy | RFHIC | - | 6.5K | ₩6,450 | +617.0% | ₩42M ($29K) |
| 2025-03-14 | BUY | Market Buy | RFHIC | - | 5.0K | ₩6,430 | +619.3% | ₩32M ($22K) |
| 2025-03-13 | BUY | Market Buy | RFHIC | - | 234 | ₩6,020 | +668.3% | ₩1M ($978) |
| 2025-03-12 | BUY | Market Buy | RFHIC | - | 4.8K | ₩6,220 | +643.6% | ₩30M ($21K) |
| 2025-03-11 | BUY | Market Buy | RFHIC | - | 10.0K | ₩6,090 | +659.4% | ₩61M ($42K) |
| 2025-03-10 | BUY | Market Buy | RFHIC | - | 2.8K | ₩6,120 | +655.7% | ₩17M ($12K) |
| 2025-03-07 | BUY | Market Buy | RFHIC | - | 2.4K | ₩6,060 | +663.2% | ₩14M ($10K) |
| 2025-03-05 | BUY | Market Buy | RFHIC | - | 5.0K | ₩5,890 | +685.2% | ₩29M ($20K) |
| 2025-03-04 | BUY | Market Buy | RFHIC | - | 5.0K | ₩5,850 | +690.6% | ₩29M ($20K) |
| 2025-02-28 | BUY | Market Buy | RFHIC | - | 5.0K | ₩5,660 | +717.1% | ₩28M ($20K) |
Showing the 50 most recent of 91 filings.
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.