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.

Where does StockDrifts get Samil C&S insider data?

From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART 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. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). 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.
Where does StockDrifts get Samil C&S insider data?: From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for Samil C&S. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.