Who has been buying Samjin L&D stock?

2 distinct insiders have filed 19 disclosed insider purchases in Samjin L&D (054090), most recently on 2026-04-02. 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 Samjin L&D have?

Samjin L&D has 19 buy-side and 0 sell-side disclosures on record, covering ₩359M ($249K) in total reported value, spanning 2023-11-22 to 2026-04-02.

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.

Samjin L&D 054090

Company

삼진엘앤디Samjin L&D

Insiders

Buys

Total Value

₩359M ($249K)

Avg Return

+17.36%

Last Filing

2026-04-02

Samjin L&D (054090) has 19 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩359M ($249K) in reported transaction value. The earliest filing StockDrifts holds for Samjin L&D is dated 2023-11-22; the most recent is 2026-04-02. Across these filings the average return since disclosure is +17.36%, 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
2026-09-03	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	15.0K	-	-	-
2026-08-28	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	300	₩995	+0.5%	₩299K ($207)
2026-08-27	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	6.8K	₩974	+2.7%	₩7M ($5K)
2026-08-19	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	2.5K	₩948	+3.3%	₩2M ($2K)
2026-08-18	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	11.7K	₩958	+2.2%	₩11M ($8K)
2026-08-14	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	10	₩953	+2.7%	₩10K ($7)
2026-08-12	BUY	기타	이진 binary	Managing Director	11.4K	₩1,015	-6.6%	₩12M ($8K)
2026-08-05	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	200	₩960	+1.4%	₩192K ($133)
2026-08-04	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	5.6K	₩983	-4.4%	₩5M ($4K)
2026-07-30	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	1.9K	₩865	+8.7%	₩2M ($1K)
2026-07-29	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	12	₩908	+3.5%	₩11K ($8)
2026-07-28	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	10.5K	₩949	+8.5%	₩10M ($7K)
2026-07-27	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	1	₩951	+8.3%	₩951 ($1)
2026-07-23	BUY	기타	이진 binary	Managing Director	59.4K	₩910	+3.3%	₩54M ($38K)
2026-04-02	BUY	Market Buy	김진보 Jinbo Kim	vice president	10.0K	₩1,005	+21.2%	₩10M ($7K)
2026-02-24	BUY	Market Buy	김진보 Jinbo Kim	vice president	5.0K	₩700	+39.9%	₩4M ($2K)
2026-02-24	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	60.6K	₩700	+39.9%	₩42M ($29K)
2026-02-23	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	59.1K	₩684	+43.1%	₩40M ($28K)
2026-02-23	BUY	Market Buy	김진보 Jinbo Kim	vice president	17.0K	₩684	+43.1%	₩12M ($8K)
2026-02-20	BUY	Market Buy	김진보 Jinbo Kim	vice president	29.0K	₩698	+40.3%	₩20M ($14K)
2026-01-20	BUY	자사주상여금	이진 binary	Managing Director	4.5K	₩805	+16.8%	₩4M ($3K)
2025-09-29	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	18.4K	₩838	+16.8%	₩15M ($11K)
2025-09-26	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	21.2K	₩834	+17.4%	₩18M ($12K)
2025-09-25	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	25.5K	₩860	+13.8%	₩22M ($15K)
2025-09-24	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	23.4K	₩855	+14.5%	₩20M ($14K)
2025-09-23	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	15.3K	₩850	+15.2%	₩13M ($9K)
2025-09-22	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	14.0K	₩845	+15.9%	₩12M ($8K)
2025-08-01	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	18.6K	₩823	+19.0%	₩15M ($11K)
2025-07-29	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	57.5K	₩820	+19.4%	₩47M ($33K)
2024-11-27	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	24.0K	₩804	+21.8%	₩19M ($13K)
2024-11-26	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	500	₩808	+21.2%	₩404K ($281)
2024-11-25	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	18.0K	₩817	+19.8%	₩15M ($10K)
2024-07-10	BUY	Market Buy	이진 binary	Managing Director	60	-	-	-
2024-07-09	BUY	Market Buy	이진 binary	Managing Director	200	-	-	-
2024-07-05	BUY	Market Buy	이진 binary	Managing Director	808	-	-	-
2024-02-27	BUY	Market Buy	이진 binary	Managing Director	30	-	-	-
2024-02-26	BUY	Market Buy	이진 binary	Managing Director	3.1K	-	-	-
2024-02-19	BUY	Market Buy	이진 binary	Managing Director	2.4K	-	-	-
2024-02-16	BUY	Market Buy	이진 binary	Managing Director	8.0K	-	-	-
2024-02-15	BUY	Market Buy	이진 binary	Managing Director	10.1K	-	-	-
2023-11-23	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	9.4K	₩1,804	-45.7%	₩17M ($12K)
2023-11-22	BUY	Market Buy	이명종 Myungjong Lee	CEO and President	9.0K	₩1,831	-46.5%	₩16M ($11K)
2020-03-17	BUY	Market Buy	이진 binary	Managing Director	340	-	-	-
2011-04-20	BUY	Market Buy	이진 binary	Managing Director	100	-	-	-

Frequently asked questions

Who has been buying Samjin L&D stock?: 2 distinct insiders have filed 19 disclosed insider purchases in Samjin L&D (054090), most recently on 2026-04-02. 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 Samjin L&D have?: Samjin L&D has 19 buy-side and 0 sell-side disclosures on record, covering ₩359M ($249K) in total reported value, spanning 2023-11-22 to 2026-04-02.
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.