Who has been buying nature and environment stock?

2 distinct insiders have filed 115 disclosed insider purchases in nature and environment (043910), most recently on 2026-06-16. 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 nature and environment have?

nature and environment has 115 buy-side and 0 sell-side disclosures on record, covering ₩1.3B ($871K) in total reported value, spanning 2024-06-28 to 2026-06-16.

Where does StockDrifts get nature and environment 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.

nature and environment 043910

Company

자연과환경nature and environment

Insiders

Buys

115

Total Value

₩1.3B ($871K)

Avg Return

-17.78%

Last Filing

2026-06-16

nature and environment (043910) has 115 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩1.3B ($871K) in reported transaction value. The earliest filing StockDrifts holds for nature and environment is dated 2024-06-28; the most recent is 2026-06-16. 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 -17.78%, 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
2026-06-16	BUY	Market Buy	이병용 Lee Byung-yong	CEO	2.2K	₩3,130	+3.7%	₩7M ($5K)
2026-06-15	BUY	Market Buy	이병용 Lee Byung-yong	CEO	7.4K	₩3,085	+5.2%	₩23M ($16K)
2026-06-10	BUY	Market Buy	이병용 Lee Byung-yong	CEO	640	₩2,980	+3.5%	₩2M ($1K)
2026-05-28	BUY	Market Buy	이병용 Lee Byung-yong	CEO	857	₩3,570	-15.4%	₩3M ($2K)
2026-05-26	BUY	Market Buy	김준수 Junsu Kim	president	298	₩3,660	-18.3%	₩1M ($757)
2026-05-26	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.3K	₩3,660	-18.3%	₩16M ($11K)
2026-05-22	BUY	Market Buy	김준수 Junsu Kim	president	1.0K	₩3,675	-18.6%	₩4M ($3K)
2026-05-02	SELL	주식병합	김준수 Junsu Kim	president	-33.3K	₩493	-506.5%	₩16M ($11K)
2026-05-02	SELL	주식병합	이병용 Lee Byung-yong	CEO	-3.2M	₩493	-506.5%	₩1.6B ($1.1M)
2026-04-30	BUY	Market Buy	이병용 Lee Byung-yong	CEO	120.3K	₩493	+0.0%	₩59M ($41K)
2026-04-28	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.0K	₩493	+0.0%	₩2M ($1K)
2026-04-27	BUY	Market Buy	이병용 Lee Byung-yong	CEO	1.5K	₩493	+0.0%	₩738K ($513)
2026-04-24	BUY	Market Buy	이병용 Lee Byung-yong	CEO	8.8K	₩500	-1.4%	₩4M ($3K)
2026-04-01	BUY	Market Buy	이병용 Lee Byung-yong	CEO	25.0K	₩491	+0.8%	₩12M ($9K)
2026-03-31	BUY	Market Buy	이병용 Lee Byung-yong	CEO	2.9K	₩470	+5.3%	₩1M ($950)
2026-03-30	BUY	Market Buy	이병용 Lee Byung-yong	CEO	3.0K	₩481	+2.9%	₩1M ($1K)
2026-03-26	BUY	Market Buy	이병용 Lee Byung-yong	CEO	500	₩493	+0.4%	₩247K ($171)
2026-03-25	BUY	Market Buy	이병용 Lee Byung-yong	CEO	8.6K	₩497	-0.4%	₩4M ($3K)
2026-03-23	BUY	Market Buy	이병용 Lee Byung-yong	CEO	1.0K	₩485	+2.3%	₩485K ($337)
2026-03-13	BUY	Market Buy	이병용 Lee Byung-yong	CEO	40.7K	₩502	-1.2%	₩20M ($14K)
2026-03-10	BUY	Market Buy	이병용 Lee Byung-yong	CEO	932	₩486	+2.1%	₩453K ($315)
2026-03-09	BUY	Market Buy	이병용 Lee Byung-yong	CEO	1.0K	₩481	+3.1%	₩481K ($334)
2026-03-06	BUY	Market Buy	이병용 Lee Byung-yong	CEO	21.9K	₩512	-3.1%	₩11M ($8K)
2026-02-06	BUY	Market Buy	이병용 Lee Byung-yong	CEO	852	₩607	-18.3%	₩517K ($359)
2026-02-05	BUY	Market Buy	이병용 Lee Byung-yong	CEO	5.1K	₩599	-17.2%	₩3M ($2K)
2026-02-04	BUY	Market Buy	이병용 Lee Byung-yong	CEO	10.1K	₩603	-17.7%	₩6M ($4K)
2026-01-12	BUY	Market Buy	이병용 Lee Byung-yong	CEO	15.1K	₩607	-18.3%	₩9M ($6K)
2026-01-08	BUY	Market Buy	이병용 Lee Byung-yong	CEO	12.0K	₩609	-18.6%	₩7M ($5K)
2026-01-07	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.7K	₩611	-18.8%	₩3M ($2K)
2025-10-31	BUY	Market Buy	이병용 Lee Byung-yong	CEO	626	₩620	-20.0%	₩388K ($270)
2025-10-29	BUY	Market Buy	이병용 Lee Byung-yong	CEO	780	₩622	-20.3%	₩485K ($337)
2025-10-28	BUY	Market Buy	이병용 Lee Byung-yong	CEO	1.2K	₩642	-22.7%	₩795K ($552)
2025-10-24	BUY	Market Buy	이병용 Lee Byung-yong	CEO	8.9K	₩646	-23.2%	₩6M ($4K)
2025-10-23	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.4K	₩650	-23.7%	₩3M ($2K)
2025-10-14	BUY	Market Buy	이병용 Lee Byung-yong	CEO	14.3K	₩663	-25.2%	₩10M ($7K)
2025-10-10	BUY	Market Buy	이병용 Lee Byung-yong	CEO	31.6K	₩671	-26.1%	₩21M ($15K)
2025-10-01	BUY	Market Buy	이병용 Lee Byung-yong	CEO	671	₩671	-26.1%	₩450K ($313)
2025-09-30	BUY	Market Buy	이병용 Lee Byung-yong	CEO	13.2K	₩674	-26.4%	₩9M ($6K)
2025-09-29	BUY	Market Buy	이병용 Lee Byung-yong	CEO	2.2K	₩681	-27.2%	₩2M ($1K)
2025-09-26	BUY	Market Buy	이병용 Lee Byung-yong	CEO	9.4K	₩680	-27.1%	₩6M ($4K)
2025-09-17	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.2K	₩709	-30.0%	₩3M ($2K)
2025-09-09	BUY	Market Buy	이병용 Lee Byung-yong	CEO	1.5K	₩726	-31.7%	₩1M ($756)
2025-09-05	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.3K	₩696	-28.7%	₩3M ($2K)
2025-05-29	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.5K	₩736	-32.6%	₩3M ($2K)
2025-05-27	BUY	Market Buy	이병용 Lee Byung-yong	CEO	3.0K	₩703	-29.4%	₩2M ($1K)
2025-05-26	BUY	Market Buy	이병용 Lee Byung-yong	CEO	12.7K	₩707	-29.8%	₩9M ($6K)
2025-05-23	BUY	Market Buy	이병용 Lee Byung-yong	CEO	2.4K	₩707	-29.8%	₩2M ($1K)
2025-05-22	BUY	Market Buy	이병용 Lee Byung-yong	CEO	4.0K	₩693	-28.4%	₩3M ($2K)
2025-05-21	BUY	Market Buy	이병용 Lee Byung-yong	CEO	8.5K	₩721	-31.2%	₩6M ($4K)
2025-05-20	BUY	Market Buy	이병용 Lee Byung-yong	CEO	122.1K	₩736	-32.6%	₩90M ($62K)

Showing the 50 most recent of 122 filings.

Frequently asked questions

Who has been buying nature and environment stock?: 2 distinct insiders have filed 115 disclosed insider purchases in nature and environment (043910), most recently on 2026-06-16. 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 nature and environment have?: nature and environment has 115 buy-side and 0 sell-side disclosures on record, covering ₩1.3B ($871K) in total reported value, spanning 2024-06-28 to 2026-06-16.
Where does StockDrifts get nature and environment 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 nature and environment. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.