Who has been buying WSI stock?

5 distinct insiders have filed 19 disclosed insider purchases in WSI (299170), most recently on 2026-06-24. 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 WSI have?

WSI has 19 buy-side and 29 sell-side disclosures on record, covering ₩5.9B ($4.1M) in total reported value, spanning 2024-05-30 to 2026-06-24.

Where does StockDrifts get WSI 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.

WSI 299170

Company

더블유에스아이WSI

Insiders

Buys

Total Value

₩5.9B ($4.1M)

Avg Return

-25.05%

Last Filing

2026-06-24

WSI (299170) has 19 disclosed insider purchases and 29 disclosed disposals on record, filed by 5 distinct insiders. Together those filings cover ₩5.9B ($4.1M) in reported transaction value. The earliest filing StockDrifts holds for WSI is dated 2024-05-30; the most recent is 2026-06-24. 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 -25.05%, 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
2026-06-24	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	37.9K	-	-	-
2026-03-06	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	6.8K	-	-	-
2026-01-15	SELL	Market Sell	김병규 Kim Byeong-gyu	CTO	-39.0K	₩3,800	+15.7%	₩148M ($103K)
2025-11-27	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-65.0K	₩2,060	-55.6%	₩134M ($93K)
2025-11-18	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-169.0K	₩2,140	-49.8%	₩362M ($251K)
2025-11-17	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-670.8K	₩2,225	-44.0%	₩1.5B ($1.0M)
2025-11-11	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-373.0K	₩2,170	-47.7%	₩809M ($562K)
2025-11-10	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-591.1K	₩2,170	-47.7%	₩1.3B ($891K)
2025-11-07	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	7.3K	₩2,230	+43.7%	₩16M ($11K)
2025-11-05	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-117.7K	₩2,155	-48.7%	₩254M ($176K)
2025-10-27	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-329.7K	₩2,030	-57.9%	₩669M ($465K)
2025-09-03	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	2.6K	₩1,548	+107.0%	₩4M ($3K)
2025-08-26	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-15.9K	₩1,515	-111.5%	₩24M ($17K)
2025-08-25	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-15.0K	₩1,490	-115.1%	₩22M ($16K)
2025-08-21	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-3.0K	₩1,460	-119.5%	₩4M ($3K)
2025-08-20	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-170.2K	₩1,505	-113.0%	₩256M ($178K)
2025-08-19	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-6.0K	₩1,492	-114.8%	₩9M ($6K)
2025-08-18	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-3.2K	₩1,498	-114.0%	₩5M ($3K)
2025-08-14	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-6.5K	₩1,517	-111.3%	₩10M ($7K)
2025-08-13	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-15.4K	₩1,516	-111.4%	₩23M ($16K)
2025-08-12	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-9.0K	₩1,530	-109.5%	₩14M ($10K)
2025-08-11	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-10.2K	₩1,529	-109.6%	₩16M ($11K)
2025-08-08	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-10.0K	₩1,549	-106.9%	₩15M ($11K)
2025-08-07	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-10.0K	₩1,546	-107.3%	₩15M ($11K)
2025-08-06	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-10.0K	₩1,559	-105.6%	₩16M ($11K)
2025-08-05	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-5.0K	₩1,530	-109.5%	₩8M ($5K)
2025-08-04	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-3.0K	₩1,537	-108.5%	₩5M ($3K)
2025-08-01	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-6.5K	₩1,525	-110.2%	₩10M ($7K)
2025-07-31	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-16.0K	₩1,561	-105.3%	₩25M ($17K)
2025-07-30	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-7.5K	₩1,568	-104.4%	₩12M ($8K)
2025-07-30	SELL	행사가액조정	라이프자산운용 Life Asset Management	-	-95.8K	₩1,568	-104.4%	₩150M ($104K)
2025-07-29	BUY	전환사채의권리행사	라이프자산운용 Life Asset Management	-	2.9M	₩1,586	+102.1%	₩4.6B ($3.2M)
2025-07-29	SELL	전환등	라이프자산운용 Life Asset Management	-	-2.9M	₩1,586	-102.1%	₩4.6B ($3.2M)
2025-07-29	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-10.1K	₩1,586	-102.1%	₩16M ($11K)
2025-07-28	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-5.0K	₩1,597	-100.7%	₩8M ($6K)
2025-07-25	SELL	Market Sell	라이프자산운용 Life Asset Management	-	-5.0K	₩1,661	-93.0%	₩8M ($6K)
2025-06-12	BUY	전환사채의권리행사	라이프자산운용 Life Asset Management	-	2.6M	₩1,843	+73.9%	₩4.8B ($3.4M)
2025-06-12	SELL	전환등	라이프자산운용 Life Asset Management	-	-2.6M	₩1,843	-73.9%	₩4.8B ($3.4M)
2025-05-28	BUY	Market Buy	김병규 Kim Byeong-gyu	CTO	17.5K	₩1,921	+66.8%	₩34M ($23K)
2025-05-27	BUY	Market Buy	김병규 Kim Byeong-gyu	CTO	2.5K	₩1,939	+65.3%	₩5M ($3K)
2024-12-30	BUY	행사가액조정	라이프자산운용 Life Asset Management	-	2.0M	₩1,273	+151.8%	₩2.5B ($1.7M)
2024-12-26	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	200	₩1,267	+153.0%	₩253K ($176)
2024-12-20	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	185	₩1,271	+152.2%	₩235K ($163)
2024-10-28	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	4.0K	₩1,517	+111.3%	₩6M ($4K)
2024-07-09	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	550	₩1,798	+78.3%	₩989K ($687)
2024-07-05	BUY	Market Buy	박정섭 Park Jeong-seop	Chairman	20.0K	₩1,783	+79.8%	₩36M ($25K)
2024-07-05	BUY	Market Buy	이윤석 Yunseok Lee	CEO	10.8K	₩1,783	+79.8%	₩19M ($13K)
2024-07-05	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	145	₩1,783	+79.8%	₩259K ($180)
2024-07-04	BUY	Market Buy	박정섭 Park Jeong-seop	Chairman	17.5K	₩1,817	+76.4%	₩32M ($22K)
2024-07-04	BUY	Market Buy	안진수 Jinsu Ahn	Managing Director	9.6K	₩1,817	+76.4%	₩17M ($12K)

Showing the 50 most recent of 55 filings.

Frequently asked questions

Who has been buying WSI stock?: 5 distinct insiders have filed 19 disclosed insider purchases in WSI (299170), most recently on 2026-06-24. 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 WSI have?: WSI has 19 buy-side and 29 sell-side disclosures on record, covering ₩5.9B ($4.1M) in total reported value, spanning 2024-05-30 to 2026-06-24.
Where does StockDrifts get WSI 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 WSI. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.