Who has been buying NSM stock?

2 distinct insiders have filed 32 disclosed insider purchases in NSM (238170), most recently on 2026-03-04. 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 NSM have?

NSM has 32 buy-side and 1 sell-side disclosures on record, covering ₩4.5B ($3.1M) in total reported value, spanning 2024-05-20 to 2026-03-04.

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.

NSM 238170

Company

엔에스엠NSM

Insiders

Buys

Total Value

₩4.5B ($3.1M)

Avg Return

+10.57%

Last Filing

2026-03-04

NSM (238170) has 32 disclosed insider purchases and 1 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩4.5B ($3.1M) in reported transaction value. The earliest filing StockDrifts holds for NSM is dated 2024-05-20; the most recent is 2026-03-04. Across these filings the average return since disclosure is +10.57%, 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
2026-03-04	SELL	합병	에코볼트 Eco Bolt	-	-10.0M	-	-	-
2025-10-14	SELL	기타	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	-6.0M	₩796	+7.2%	₩4.8B ($3.3M)
2025-10-14	BUY	신규보고	오성첨단소재 Ohsung Advanced Materials	-	6.0M	₩796	-7.2%	₩4.8B ($3.3M)
2025-09-18	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	190.6K	₩780	-5.3%	₩149M ($103K)
2025-09-17	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	126.0K	₩780	-5.3%	₩98M ($68K)
2025-09-16	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	156.5K	₩759	-2.6%	₩119M ($82K)
2025-09-12	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	123.7K	₩701	+5.4%	₩87M ($60K)
2025-09-11	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	135.9K	₩715	+3.4%	₩97M ($67K)
2025-09-10	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	81.7K	₩700	+5.6%	₩57M ($40K)
2025-09-09	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	128.4K	₩650	+13.7%	₩83M ($58K)
2025-09-05	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	164.1K	₩690	+7.1%	₩113M ($79K)
2025-09-04	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	142.9K	₩705	+4.8%	₩101M ($70K)
2025-09-03	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	147.9K	₩639	+15.7%	₩95M ($66K)
2024-12-24	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	594.3K	₩718	+2.9%	₩427M ($296K)
2024-12-23	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	463.1K	₩653	+13.2%	₩302M ($210K)
2024-12-20	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	432.8K	₩670	+10.3%	₩290M ($201K)
2024-08-19	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	317.2K	₩778	-5.0%	₩247M ($171K)
2024-08-16	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	404.7K	₩679	+8.8%	₩275M ($191K)
2024-08-14	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	272.0K	₩728	+1.5%	₩198M ($138K)
2024-08-13	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	317.9K	₩640	+15.5%	₩203M ($141K)
2024-08-12	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	307.7K	₩577	+28.1%	₩178M ($123K)
2024-08-08	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	356.4K	₩640	+15.5%	₩228M ($158K)
2024-08-07	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	190.9K	₩610	+21.1%	₩116M ($81K)
2024-08-06	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	105.6K	₩699	+5.7%	₩74M ($51K)
2024-08-02	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	60.0K	₩648	+14.0%	₩39M ($27K)
2024-08-01	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	60.0K	₩584	+26.5%	₩35M ($24K)
2024-07-31	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	79.9K	₩591	+25.0%	₩47M ($33K)
2024-07-30	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	70.5K	₩589	+25.5%	₩42M ($29K)
2024-07-29	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	159.7K	₩550	+34.4%	₩88M ($61K)
2024-07-26	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	107.9K	₩534	+38.4%	₩58M ($40K)
2024-07-23	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	90.0K	₩579	+27.6%	₩52M ($36K)
2024-07-22	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	73.2K	₩635	+16.4%	₩47M ($32K)
2024-07-19	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	50.0K	₩620	+19.2%	₩31M ($22K)
2024-07-18	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	30.0K	₩594	+24.4%	₩18M ($12K)
2024-07-17	BUY	Market Buy	글로에 신기술조합 제53호 Gloe New Technology Association No. 53	-	36.0K	₩599	+23.4%	₩22M ($15K)
2024-05-20	SELL	Market Sell	정상국 normal country	personal	-1.3M	₩397	-86.2%	₩497M ($345K)

Frequently asked questions

Who has been buying NSM stock?: 2 distinct insiders have filed 32 disclosed insider purchases in NSM (238170), most recently on 2026-03-04. 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 NSM have?: NSM has 32 buy-side and 1 sell-side disclosures on record, covering ₩4.5B ($3.1M) in total reported value, spanning 2024-05-20 to 2026-03-04.
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.