Who has been buying Sam C&S stock?

1 distinct insiders have filed 0 disclosed insider purchases in Sam C&S (252990), most recently on 2026-07-09. 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 Sam C&S have?

Sam C&S has 0 buy-side and 7 sell-side disclosures on record, covering ₩22.0B ($15.2M) in total reported value, spanning 2021-12-06 to 2026-07-09.

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.

Sam C&S 252990

Company

샘씨엔에스Sam C&S

Insiders

Buys

Total Value

₩22.0B ($15.2M)

Avg Return

-37.12%

Last Filing

2026-07-09

Sam C&S (252990) has 0 disclosed insider purchases and 7 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩22.0B ($15.2M) in reported transaction value. The earliest filing StockDrifts holds for Sam C&S is dated 2021-12-06; the most recent is 2026-07-09. Across these filings the average return since disclosure is -37.12%, 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
2026-08-01	BUY	신규선임	이창원 Lee Chang-won	Managing Director	30.0K	₩11,750	+8.1%	₩353M ($245K)
2026-07-09	BUY	기타	고대진 Go Dae-jin	moving	2.5K	₩10,620	+0.0%	₩27M ($18K)
2026-07-09	BUY	기타	정두연 Dooyeon Jeong	Managing Director	3.0K	₩10,620	+0.0%	₩32M ($22K)
2024-04-26	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-428.1K	₩8,800	-28.4%	₩3.8B ($2.6M)
2024-04-25	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-4.9K	₩7,810	-44.7%	₩38M ($27K)
2024-04-24	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-533.0K	₩8,270	-36.6%	₩4.4B ($3.1M)
2024-04-22	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-76.8K	₩8,240	-37.1%	₩633M ($439K)
2024-04-18	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-1.1M	₩8,590	-31.6%	₩9.0B ($6.3M)
2024-04-17	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-66.7K	₩8,030	-40.7%	₩536M ($372K)
2024-04-12	SELL	Market Sell	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-442.8K	₩8,030	-40.7%	₩3.6B ($2.5M)
2024-02-08	BUY	전환사채의권리행사	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	2.7M	₩7,330	+54.2%	₩20.1B ($14.0M)
2024-02-08	SELL	전환등	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	-2.7M	₩7,330	-54.2%	₩20.1B ($14.0M)
2022-08-30	BUY	행사가액조정	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	1.4M	₩4,960	+127.8%	₩7.0B ($4.9M)
2022-05-31	BUY	행사가액조정	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	88.7K	₩6,280	+79.9%	₩557M ($387K)
2021-12-06	BUY	CB인수	대신 신기술투자조합 제11호 Daesin New Technology Investment Association No. 11	-	8.6M	₩5,850	+93.2%	₩50.0B ($34.8M)

Frequently asked questions

Who has been buying Sam C&S stock?: 1 distinct insiders have filed 0 disclosed insider purchases in Sam C&S (252990), most recently on 2026-07-09. 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 Sam C&S have?: Sam C&S has 0 buy-side and 7 sell-side disclosures on record, covering ₩22.0B ($15.2M) in total reported value, spanning 2021-12-06 to 2026-07-09.
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.