Who has been buying Samil C&S stock?

1 distinct insiders have filed 58 disclosed insider purchases in Samil C&S (004440), most recently on 2026-03-13. 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 Samil C&S have?

Samil C&S has 58 buy-side and 0 sell-side disclosures on record, covering ₩2.6B ($1.8M) in total reported value, spanning 2023-07-28 to 2026-03-13.

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.

Samil C&S 004440

Company

삼일씨엔에스Samil C&S

Insiders

Buys

Total Value

₩2.6B ($1.8M)

Avg Return

+33.65%

Last Filing

2026-03-13

Samil C&S (004440) has 58 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩2.6B ($1.8M) in reported transaction value. The earliest filing StockDrifts holds for Samil C&S is dated 2023-07-28; the most recent is 2026-03-13. Across these filings the average return since disclosure is +33.65%, 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
2026-03-13	BUY	신규선임	문용진 Yongjin Moon	Assistant Managing Director	841	-	-	-
2025-01-17	BUY	합병	장수현 Soohyun Jang	Managing Director	5.8K	₩3,345	+73.4%	₩19M ($13K)
2025-01-17	BUY	신규선임	김영옥 Kim Young-ok	Assistant Managing Director	4.3K	₩3,345	+73.4%	₩14M ($10K)
2024-10-31	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	9.2K	₩4,310	+34.6%	₩40M ($28K)
2024-10-30	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	2.0K	₩4,315	+34.4%	₩9M ($6K)
2024-10-29	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	16.8K	₩4,335	+33.8%	₩73M ($50K)
2024-10-28	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	9.0K	₩4,400	+31.8%	₩39M ($27K)
2024-10-24	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	1.1K	₩4,320	+34.3%	₩5M ($3K)
2024-10-23	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	3.6K	₩4,215	+37.6%	₩15M ($10K)
2024-10-22	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	40.3K	₩4,250	+36.5%	₩171M ($119K)
2024-10-21	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	3.7K	₩4,300	+34.9%	₩16M ($11K)
2024-10-18	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	31.5K	₩4,345	+33.5%	₩137M ($95K)
2024-10-17	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	3.7K	₩4,110	+41.1%	₩15M ($11K)
2024-10-16	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	8.7K	₩4,290	+35.2%	₩37M ($26K)
2024-10-10	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	7.8K	₩4,195	+38.3%	₩33M ($23K)
2024-10-10	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	12.4K	₩4,195	+38.3%	₩52M ($36K)
2024-10-08	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	6.9K	₩4,115	+41.0%	₩28M ($20K)
2024-10-06	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	6.9K	₩4,070	+42.5%	₩28M ($20K)
2024-10-02	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	8.7K	₩4,090	+41.8%	₩35M ($25K)
2024-08-23	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	516	₩4,420	+31.2%	₩2M ($2K)
2024-08-13	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	4.2K	₩4,370	+32.7%	₩18M ($13K)
2024-08-12	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	7.3K	₩4,450	+30.3%	₩33M ($23K)
2024-08-09	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	12.5K	₩4,420	+31.2%	₩55M ($38K)
2024-08-08	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	17.3K	₩4,350	+33.3%	₩75M ($52K)
2024-08-07	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	27.2K	₩4,235	+37.0%	₩115M ($80K)
2024-07-26	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	4.2K	₩4,425	+31.1%	₩19M ($13K)
2024-07-25	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	4.4K	₩4,295	+35.0%	₩19M ($13K)
2024-07-09	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	6.1K	₩4,455	+30.2%	₩27M ($19K)
2024-07-08	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	28.7K	₩4,380	+32.4%	₩126M ($87K)
2024-07-05	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	338	₩4,255	+36.3%	₩1M ($999)
2024-07-03	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	4.0K	₩4,445	+30.5%	₩18M ($12K)
2024-06-26	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	22.7K	₩4,435	+30.8%	₩101M ($70K)
2024-06-25	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	5.6K	₩4,425	+31.1%	₩25M ($17K)
2024-06-24	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	21.3K	₩4,390	+32.1%	₩93M ($65K)
2024-06-21	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	13.2K	₩4,425	+31.1%	₩59M ($41K)
2024-06-20	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	27.3K	₩4,380	+32.4%	₩120M ($83K)
2024-06-13	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	10.9K	₩4,400	+31.8%	₩48M ($33K)
2024-06-12	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	10.3K	₩4,460	+30.0%	₩46M ($32K)
2024-06-10	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	1.7K	₩4,430	+30.9%	₩8M ($5K)
2024-06-07	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	47.1K	₩4,410	+31.5%	₩208M ($144K)
2024-06-05	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	2.5K	₩4,390	+32.1%	₩11M ($8K)
2024-03-26	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	64.9K	₩4,495	+29.0%	₩292M ($203K)
2023-10-18	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	2.5K	₩4,425	+31.1%	₩11M ($8K)
2023-10-17	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	461	₩4,370	+32.7%	₩2M ($1K)
2023-10-16	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	2.9K	₩4,350	+33.3%	₩13M ($9K)
2023-10-13	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	3.1K	₩4,400	+31.8%	₩14M ($9K)
2023-10-12	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	12.7K	₩4,325	+34.1%	₩55M ($38K)
2023-10-11	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	500	₩4,295	+35.0%	₩2M ($1K)
2023-10-05	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	1.2K	₩4,315	+34.4%	₩5M ($3K)
2023-10-04	BUY	Market Buy	삼일홀딩스 Samil Holdings	-	2.2K	₩4,235	+37.0%	₩10M ($7K)

Showing the 50 most recent of 61 filings.

Frequently asked questions

Who has been buying Samil C&S stock?: 1 distinct insiders have filed 58 disclosed insider purchases in Samil C&S (004440), most recently on 2026-03-13. 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 Samil C&S have?: Samil C&S has 58 buy-side and 0 sell-side disclosures on record, covering ₩2.6B ($1.8M) in total reported value, spanning 2023-07-28 to 2026-03-13.
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.