Who has been buying Woojin Entech stock?

16 distinct insiders have filed 0 disclosed insider purchases in Woojin Entech (457550), most recently on 2026-01-27. 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 Woojin Entech have?

Woojin Entech has 0 buy-side and 43 sell-side disclosures on record, covering ₩2.3B ($1.6M) in total reported value, spanning 2024-07-11 to 2026-01-27.

Where does StockDrifts get Woojin Entech 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.

Woojin Entech 457550

Company

우진엔텍Woojin Entech

Insiders

Buys

Total Value

₩2.3B ($1.6M)

Avg Return

-31.79%

Last Filing

2026-01-27

Woojin Entech (457550) has 0 disclosed insider purchases and 43 disclosed disposals on record, filed by 16 distinct insiders. Together those filings cover ₩2.3B ($1.6M) in reported transaction value. The earliest filing StockDrifts holds for Woojin Entech is dated 2024-07-11; the most recent is 2026-01-27. 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 -31.79%, 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
2026-01-27	SELL	Market Sell	최광규 Gwanggyu Choi	moving	-1.5K	₩28,150	-12.6%	₩42M ($29K)
2025-11-05	BUY	주식매수청구권 행사	신상연 Shin Sang-yeon	CEO	47.6K	₩23,600	+34.3%	₩1.1B ($780K)
2025-06-30	SELL	Market Sell	김종호 Kim Jong-ho	vice president	-16.3K	₩32,400	+2.2%	₩530M ($368K)
2025-06-30	SELL	Market Sell	이영주 Youngju Lee	Managing Director	-1.9K	₩32,400	+2.2%	₩63M ($44K)
2025-06-30	SELL	Market Sell	최해성 Haeseong Choi	moving	-6.0K	₩32,400	+2.2%	₩194M ($135K)
2025-06-25	SELL	Market Sell	이영주 Youngju Lee	Managing Director	-1.0K	₩34,800	+8.9%	₩35M ($24K)
2025-06-25	SELL	Market Sell	최해성 Haeseong Choi	moving	-1.0K	₩34,800	+8.9%	₩36M ($25K)
2025-06-24	SELL	Market Sell	김중선 Kim Joong-seon	moving	-5.5K	₩33,250	+4.7%	₩182M ($126K)
2025-06-23	SELL	Market Sell	전병재 Jeon Byeong-jae	moving	-2.1K	₩33,150	+4.4%	₩68M ($47K)
2025-06-23	BUY	기타	김종호 Kim Jong-ho	vice president	15.0K	₩33,150	-4.4%	₩498M ($345K)
2025-06-23	SELL	Market Sell	정경모 Jeong Kyeong-mo	moving	-1.1K	₩33,150	+4.4%	₩36M ($25K)
2025-06-23	BUY	기타	최해성 Haeseong Choi	moving	10.0K	₩33,150	-4.4%	₩332M ($230K)
2025-06-20	BUY	기타	김중선 Kim Joong-seon	moving	4.5K	₩30,000	+5.7%	₩135M ($93K)
2025-05-29	SELL	Market Sell	소수길 Sosu-gil	moving	-3.9K	₩20,550	-54.3%	₩81M ($56K)
2025-05-28	SELL	Market Sell	전병재 Jeon Byeong-jae	moving	-2.5K	₩20,600	-53.9%	₩52M ($36K)
2025-04-17	SELL	Market Sell	이해석 Lee Hae-seok	moving	-3.3K	₩17,410	-82.1%	₩57M ($40K)
2025-04-14	SELL	Market Sell	이해석 Lee Hae-seok	moving	-544	₩16,110	-96.8%	₩9M ($6K)
2025-04-09	SELL	Market Sell	이해석 Lee Hae-seok	moving	-374	₩13,620	-132.8%	₩5M ($4K)
2025-04-07	SELL	Market Sell	이해석 Lee Hae-seok	moving	-126	₩13,900	-128.1%	₩2M ($1K)
2025-03-18	SELL	Market Sell	이해석 Lee Hae-seok	moving	-538	₩17,780	-78.3%	₩10M ($7K)
2025-03-17	SELL	Market Sell	이해석 Lee Hae-seok	moving	-328	₩17,900	-77.1%	₩6M ($4K)
2025-03-13	SELL	Market Sell	이해석 Lee Hae-seok	moving	-402	₩18,090	-75.2%	₩7M ($5K)
2025-03-10	SELL	Market Sell	이해석 Lee Hae-seok	moving	-694	₩18,660	-69.9%	₩13M ($9K)
2025-03-06	SELL	Market Sell	이해석 Lee Hae-seok	moving	-53	₩19,250	-64.7%	₩1M ($709)
2025-02-26	SELL	Market Sell	이해석 Lee Hae-seok	moving	-4	₩19,520	-62.4%	₩78K ($54)
2025-02-25	SELL	Market Sell	이해석 Lee Hae-seok	moving	-10	₩19,610	-61.6%	₩196K ($136)
2025-02-18	SELL	Market Sell	정우영 Wooyoung Jeong	moving	-1.6K	₩21,600	-46.8%	₩35M ($24K)
2025-02-13	SELL	Market Sell	남언우 Nam Eon-woo	moving	-4.8K	₩20,200	-56.9%	₩97M ($68K)
2025-02-11	BUY	기타	이해석 Lee Hae-seok	moving	6.3K	₩20,500	+54.6%	₩130M ($90K)
2025-02-07	BUY	PROGRAM	정경모 Jeong Kyeong-mo	moving	1.1K	₩19,890	+59.4%	₩21M ($15K)
2025-02-04	SELL	Market Sell	이영주 Youngju Lee	Managing Director	-5.0K	₩20,950	-51.3%	₩105M ($73K)
2025-02-04	SELL	Market Sell	박덕규 Park Deok-gyu	moving	-4.0K	₩20,950	-51.3%	₩84M ($58K)
2025-02-04	SELL	Market Sell	장종현 Jang Jonghyun	moving	-1.0K	₩20,950	-51.3%	₩21M ($15K)
2025-02-04	SELL	Market Sell	박기성 Park Ki-seong	moving	-6.0K	₩20,950	-51.3%	₩126M ($87K)
2025-01-31	BUY	PROGRAM	박기성 Park Ki-seong	moving	6.0K	₩21,150	+49.9%	₩127M ($88K)
2025-01-31	BUY	PROGRAM	남언우 Nam Eon-woo	moving	4.8K	₩21,150	+49.9%	₩102M ($71K)
2025-01-31	BUY	PROGRAM	정우영 Wooyoung Jeong	moving	1.6K	₩21,150	+49.9%	₩34M ($23K)
2025-01-31	BUY	PROGRAM	박덕규 Park Deok-gyu	moving	4.0K	₩21,150	+49.9%	₩85M ($59K)
2025-01-31	BUY	PROGRAM	소수길 Sosu-gil	moving	3.9K	₩21,150	+49.9%	₩84M ($58K)
2025-01-31	BUY	PROGRAM	전병재 Jeon Byeong-jae	moving	4.6K	₩21,150	+49.9%	₩96M ($67K)
2025-01-31	BUY	PROGRAM	장종현 Jang Jonghyun	moving	1.0K	₩21,150	+49.9%	₩21M ($15K)
2025-01-31	BUY	PROGRAM	이영주 Youngju Lee	Managing Director	6.9K	₩21,150	+49.9%	₩146M ($101K)
2025-01-31	BUY	PROGRAM	최광규 Gwanggyu Choi	moving	1.5K	₩21,150	+49.9%	₩32M ($22K)
2024-11-07	BUY	기타	오우교 Oh Woo-kyo	moving	800	₩22,900	+38.4%	₩18M ($13K)
2024-10-07	SELL	Market Sell	박기성 Park Ki-seong	moving	-1.3K	₩16,800	-88.7%	₩23M ($16K)
2024-08-30	SELL	Market Sell	송병곤 Song Byeong-gon	moving	-1.0K	₩17,210	-84.2%	₩17M ($12K)
2024-08-28	SELL	Market Sell	송병곤 Song Byeong-gon	moving	-948	₩17,400	-82.2%	₩16M ($11K)
2024-08-01	BUY	기타	송병곤 Song Byeong-gon	moving	1.9K	₩21,800	+45.4%	₩42M ($29K)
2024-07-24	SELL	시간외매매	SIMPAC	-	-1.0M	₩23,300	-36.0%	₩23.3B ($16.2M)
2024-07-22	SELL	Market Sell	이해석 Lee Hae-seok	moving	-1.3K	₩27,500	-15.3%	₩37M ($26K)

Showing the 50 most recent of 79 filings.

Frequently asked questions

Who has been buying Woojin Entech stock?: 16 distinct insiders have filed 0 disclosed insider purchases in Woojin Entech (457550), most recently on 2026-01-27. 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 Woojin Entech have?: Woojin Entech has 0 buy-side and 43 sell-side disclosures on record, covering ₩2.3B ($1.6M) in total reported value, spanning 2024-07-11 to 2026-01-27.
Where does StockDrifts get Woojin Entech 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 Woojin Entech. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.