Who has been buying Gamseong Corporation stock?

1 distinct insiders have filed 10 disclosed insider purchases in Gamseong Corporation (036620), most recently on 2026-05-26. 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 Gamseong Corporation have?

Gamseong Corporation has 10 buy-side and 0 sell-side disclosures on record, covering ₩4.5B ($3.1M) in total reported value, spanning 2024-03-29 to 2026-05-26.

Where does StockDrifts get Gamseong Corporation 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.

Gamseong Corporation 036620

Company

감성코퍼레이션Gamseong Corporation

Insiders

Buys

Total Value

₩4.5B ($3.1M)

Avg Return

+38.31%

Last Filing

2026-05-26

Gamseong Corporation (036620) has 10 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩4.5B ($3.1M) in reported transaction value. The earliest filing StockDrifts holds for Gamseong Corporation is dated 2024-03-29; the most recent is 2026-05-26. 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 +38.31%, 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
2026-07-24	BUY	Market Buy	김호선 Kim Ho-seon	CEO	138.0K	₩4,210	-2.5%	₩522M ($363K)
2026-07-23	BUY	Market Buy	김호선 Kim Ho-seon	CEO	20.0K	₩4,295	-4.4%	₩79M ($55K)
2026-07-22	BUY	Market Buy	김호선 Kim Ho-seon	CEO	13.0K	₩3,745	+12.4%	₩50M ($35K)
2026-07-21	BUY	Market Buy	김호선 Kim Ho-seon	CEO	15.0K	₩3,835	+9.8%	₩58M ($40K)
2026-07-20	BUY	Market Buy	김호선 Kim Ho-seon	CEO	35.0K	₩3,885	+8.4%	₩137M ($95K)
2026-07-16	BUY	Market Buy	김호선 Kim Ho-seon	CEO	190.0K	₩3,885	+8.4%	₩749M ($520K)
2026-05-26	BUY	Market Buy	김호선 Kim Ho-seon	CEO	50.0K	₩5,100	-9.0%	₩255M ($177K)
2026-01-19	BUY	Market Buy	김호선 Kim Ho-seon	CEO	131.3K	₩5,210	+26.3%	₩684M ($475K)
2026-01-16	BUY	Market Buy	김호선 Kim Ho-seon	CEO	99.9K	₩5,270	+24.9%	₩526M ($366K)
2026-01-15	BUY	Market Buy	김호선 Kim Ho-seon	CEO	18.8K	₩5,160	+27.5%	₩97M ($68K)
2025-10-22	BUY	Market Buy	김호선 Kim Ho-seon	CEO	120.0K	₩5,320	+23.7%	₩638M ($443K)
2025-10-02	BUY	Market Buy	김호선 Kim Ho-seon	CEO	80.0K	₩6,050	+8.8%	₩484M ($336K)
2025-08-27	BUY	Market Buy	김호선 Kim Ho-seon	CEO	106.0K	₩5,660	+16.3%	₩600M ($417K)
2025-03-31	BUY	주식매수청구권 행사	최주원 Choi Joo-won	Managing Director	25.0K	₩3,890	+69.2%	₩97M ($68K)
2025-03-31	SELL	증여	최주원 Choi Joo-won	Managing Director	-40.0K	₩3,890	-69.2%	₩156M ($108K)
2025-03-28	BUY	주식매수청구권 행사	최주원 Choi Joo-won	Managing Director	15.0K	₩3,900	+68.7%	₩59M ($41K)
2024-10-22	SELL	증여	최주원 Choi Joo-won	Managing Director	-35.0K	₩3,570	-84.3%	₩125M ($87K)
2024-10-18	BUY	주식매수청구권 행사	최주원 Choi Joo-won	Managing Director	35.0K	₩3,675	+79.0%	₩129M ($89K)
2024-08-08	BUY	Market Buy	김호선 Kim Ho-seon	CEO	2.0K	₩3,375	+95.0%	₩7M ($5K)
2024-08-07	BUY	Market Buy	김호선 Kim Ho-seon	CEO	212.0K	₩3,115	+111.2%	₩660M ($459K)
2024-07-09	BUY	Market Buy	김호선 Kim Ho-seon	CEO	130.0K	₩4,150	+58.5%	₩540M ($375K)
2024-06-24	SELL	임원퇴임	박정일 Park Jeong-il	vice president	-1.3M	₩3,910	-68.3%	₩4.9B ($3.4M)
2024-03-29	BUY	주식매수청구권 행사	최주원 Choi Joo-won	Managing Director	10.0K	₩3,590	+83.3%	₩36M ($25K)
2024-03-29	SELL	주식매수청구권 행사	최주원 Choi Joo-won	Managing Director	-10.0K	₩3,590	-83.3%	₩36M ($25K)

Frequently asked questions

Who has been buying Gamseong Corporation stock?: 1 distinct insiders have filed 10 disclosed insider purchases in Gamseong Corporation (036620), most recently on 2026-05-26. 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 Gamseong Corporation have?: Gamseong Corporation has 10 buy-side and 0 sell-side disclosures on record, covering ₩4.5B ($3.1M) in total reported value, spanning 2024-03-29 to 2026-05-26.
Where does StockDrifts get Gamseong Corporation 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 Gamseong Corporation. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.