Who has been buying RF Tech stock?

2 distinct insiders have filed 10 disclosed insider purchases in RF Tech (061040), most recently on 2026-05-07. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.

How many insider filings does RF Tech have?

RF Tech has 10 buy-side and 0 sell-side disclosures on record, covering ₩1.2B ($822K) in total reported value, spanning 2023-06-29 to 2026-05-07.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

RF Tech 061040

Company

알에프텍RF Tech

Insiders

Buys

Total Value

₩1.2B ($822K)

Avg Return

-45.83%

Last Filing

2026-05-07

RF Tech (061040) has 10 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩1.2B ($822K) in reported transaction value. The earliest filing StockDrifts holds for RF Tech is dated 2023-06-29; the most recent is 2026-05-07. Across these filings the average return since disclosure is -45.83%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-05-07	SELL	주식병합	오성첨단소재 Ohsung Advanced Materials	-	-11.0M	₩9,690	+24.1%	₩106.8B ($74.2M)
2026-03-27	BUY	제3자배정유상증자	오성첨단소재 Ohsung Advanced Materials	-	8.9M	₩1,685	+0.0%	₩14.9B ($10.4M)
2026-03-27	SELL	장외매도	이진형 Jinhyung Lee	CEO	-1.1M	₩1,685	+0.0%	₩1.9B ($1.3M)
2026-03-27	SELL	장외매도	알에프스탠다드 RF Standard	-	-3.8M	₩1,685	+0.0%	₩6.4B ($4.4M)
2024-12-10	BUY	Market Buy	이진형 Jinhyung Lee	CEO	20.0K	₩3,785	-46.6%	₩76M ($53K)
2024-12-10	BUY	Market Buy	차정운 Cha Jeong-woon	Internal director	2.0K	₩3,785	-46.6%	₩8M ($5K)
2024-12-09	BUY	Market Buy	차정운 Cha Jeong-woon	Internal director	1.0K	₩3,490	-42.1%	₩3M ($2K)
2024-12-06	BUY	Market Buy	차정운 Cha Jeong-woon	Internal director	3.0K	₩3,500	-42.3%	₩11M ($7K)
2024-12-05	BUY	Market Buy	이진형 Jinhyung Lee	CEO	20.0K	₩3,725	-45.8%	₩75M ($52K)
2024-12-05	BUY	Market Buy	차정운 Cha Jeong-woon	Internal director	6.0K	₩3,725	-45.8%	₩22M ($16K)
2024-12-04	BUY	Market Buy	차정운 Cha Jeong-woon	Internal director	2.0K	₩3,890	-48.1%	₩8M ($5K)
2024-12-04	BUY	Market Buy	이진형 Jinhyung Lee	CEO	30.0K	₩3,890	-48.1%	₩117M ($81K)
2024-12-03	BUY	Market Buy	이진형 Jinhyung Lee	CEO	100.0K	₩3,880	-47.9%	₩388M ($269K)
2024-12-02	BUY	Market Buy	이진형 Jinhyung Lee	CEO	130.0K	₩3,675	-45.0%	₩478M ($332K)
2023-06-29	BUY	콜옵션권리행사에따른주식취득	차정운 Cha Jeong-woon	Internal director	40.1K	₩4,560	-55.7%	₩183M ($127K)
2023-06-29	BUY	콜옵션권리행사에따른주식취득	이진형 Jinhyung Lee	CEO	182.0K	₩4,560	-55.7%	₩830M ($576K)

Frequently asked questions

Who has been buying RF Tech stock?: 2 distinct insiders have filed 10 disclosed insider purchases in RF Tech (061040), most recently on 2026-05-07. Each filer, their role, the number of shares and the price at filing are listed in the table on this page.
How many insider filings does RF Tech have?: RF Tech has 10 buy-side and 0 sell-side disclosures on record, covering ₩1.2B ($822K) in total reported value, spanning 2023-06-29 to 2026-05-07.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

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.