Who has been buying Nano CMS stock?

1 distinct insiders have filed 0 disclosed insider purchases in Nano CMS (247660), most recently on 2025-06-24. 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 Nano CMS have?

Nano CMS has 0 buy-side and 1 sell-side disclosures on record, covering ₩310M ($215K) in total reported value, spanning 2024-03-11 to 2025-06-24.

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.

Nano CMS 247660

Company

나노씨엠에스Nano CMS

Insiders

Buys

Total Value

₩310M ($215K)

Avg Return

+8.50%

Last Filing

2025-06-24

Nano CMS (247660) has 0 disclosed insider purchases and 1 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩310M ($215K) in reported transaction value. The earliest filing StockDrifts holds for Nano CMS is dated 2024-03-11; the most recent is 2025-06-24. Across these filings the average return since disclosure is +8.50%, 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
2026-09-16	BUY	유상신주취득	에스에이치에너지알이백 SH Energy R2 Bag	-	242.0K	₩3,980	+7.2%	₩764M ($530K)
2026-08-28	BUY	제3자배정유상증자	에스에이치에너지알이백 SH Energy R2 Bag	-	887.0K	₩3,280	+14.8%	₩2.0B ($1.4M)
2026-08-06	SELL	Market Sell	김희자 Heeja Kim	-	-22.2K	₩2,450	+4.1%	₩57M ($40K)
2026-08-05	SELL	Market Sell	김희자 Heeja Kim	-	-4.3K	₩2,855	+17.7%	₩13M ($9K)
2025-06-24	BUY	장외매수	신동근 Shin Dong-geun	CEO	11.5K	₩5,460	-14.2%	₩63M ($44K)
2025-04-03	SELL	증여	김시석 Kim Si-seok	Researcher	-270.0K	₩5,090	+8.0%	₩1.4B ($954K)
2025-03-28	SELL	Market Sell	김시석 Kim Si-seok	Researcher	-60.6K	₩5,120	+8.5%	₩310M ($215K)
2024-12-12	BUY	자사주상여금	박준순 Park Jun-soon	Managing Director	28.7K	₩6,220	-24.7%	₩179M ($124K)
2024-12-12	BUY	자사주상여금	신동근 Shin Dong-geun	CEO	30.0K	₩6,220	-24.7%	₩187M ($130K)
2024-03-11	SELL	증여	김시석 Kim Si-seok	Researcher	-300.0K	₩9,550	+50.9%	₩2.9B ($2.0M)

Frequently asked questions

Who has been buying Nano CMS stock?: 1 distinct insiders have filed 0 disclosed insider purchases in Nano CMS (247660), most recently on 2025-06-24. 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 Nano CMS have?: Nano CMS has 0 buy-side and 1 sell-side disclosures on record, covering ₩310M ($215K) in total reported value, spanning 2024-03-11 to 2025-06-24.
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.