Who has been buying TSE stock?

11 distinct insiders have filed 19 disclosed insider purchases in TSE (131290), most recently on 2026-05-08. 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 TSE have?

TSE has 19 buy-side and 5 sell-side disclosures on record, covering ₩1.6B ($1.1M) in total reported value, spanning 2022-04-08 to 2026-05-08.

Where does StockDrifts get TSE 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.

TSE 131290

Company

티에스이TSE

Insiders

Buys

Total Value

₩1.6B ($1.1M)

Avg Return

+94.14%

Last Filing

2026-05-08

TSE (131290) has 19 disclosed insider purchases and 5 disclosed disposals on record, filed by 11 distinct insiders. Together those filings cover ₩1.6B ($1.1M) in reported transaction value. The earliest filing StockDrifts holds for TSE is dated 2022-04-08; the most recent is 2026-05-08. 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 +94.14%, 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
2026-05-08	BUY	Market Buy	현창훈 Hyeon Chang-hoon	Managing Director	500	₩174,700	+7.2%	₩87M ($61K)
2026-04-24	BUY	Market Buy	김준연 Junyeon Kim	vice president	734	₩169,400	-0.3%	₩124M ($86K)
2026-03-06	BUY	Market Buy	전영휴 Yeonghyu Jeon	president	900	₩106,100	+4.0%	₩95M ($66K)
2026-01-06	BUY	Market Buy	유병휘 Yoo Byung-hwi	Managing Director	100	₩63,600	+73.4%	₩6M ($4K)
2025-12-10	SELL	Market Sell	JINYOONYOUNG	Managing Director	-5.0K	₩58,500	-88.5%	₩293M ($204K)
2025-10-29	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	1.8K	₩50,300	+119.3%	₩90M ($63K)
2025-08-11	BUY	Market Buy	박정갑 Park Jeong-gap	vice president	2.1K	₩40,350	+173.4%	₩83M ($58K)
2025-08-08	BUY	Market Buy	박정갑 Park Jeong-gap	vice president	600	₩40,400	+173.0%	₩24M ($17K)
2025-07-09	BUY	Market Buy	양동신 Yang Dong-shin	vice president	140	₩38,850	+183.9%	₩5M ($4K)
2025-07-09	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	885	₩38,850	+183.9%	₩34M ($24K)
2025-07-07	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	431	₩39,300	+180.7%	₩17M ($12K)
2025-07-04	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	890	₩39,650	+178.2%	₩35M ($25K)
2025-04-09	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	788	₩39,200	+181.4%	₩31M ($21K)
2025-02-19	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	4.4K	₩48,000	+129.8%	₩213M ($148K)
2025-02-18	BUY	Market Buy	김준연 Junyeon Kim	Managing Director	1.2K	₩47,400	+132.7%	₩55M ($38K)
2024-08-07	BUY	Market Buy	양동신 Yang Dong-shin	vice president	307	₩42,700	+158.3%	₩13M ($9K)
2024-08-07	BUY	Market Buy	박소현 Park So-hyun	Managing Director	50	₩42,700	+158.3%	₩2M ($1K)
2024-07-25	BUY	Market Buy	박소현 Park So-hyun	Managing Director	150	₩42,850	+157.4%	₩6M ($4K)
2024-07-24	BUY	Market Buy	박소현 Park So-hyun	Managing Director	50	₩45,400	+142.9%	₩2M ($2K)
2024-07-23	BUY	Market Buy	박소현 Park So-hyun	Managing Director	100	₩44,800	+146.2%	₩4M ($3K)
2024-06-26	BUY	PROGRAM	강기영 Kiyoung Kang	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	윤주완 Yoon Joo-wan	vice president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	탁정 Takjeong	vice president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	전영휴 Yeonghyu Jeon	vice president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김충현 Chunghyeon Kim	Managing Director	2.7K	₩59,200	+86.3%	₩162M ($112K)
2024-06-26	BUY	PROGRAM	양정일 Yang Jeong-il	president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	양동신 Yang Dong-shin	vice president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김명진 Myeongjin Kim	vice president	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	박남철 Park Nam-cheol	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	임주환 Juhwan Lim	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	이인표 Inpyo Lee	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김종식 Kim Jong-sik	master	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	이준세 Junse Lee	Managing Director	2.7K	₩59,200	+86.3%	₩162M ($112K)
2024-06-26	BUY	PROGRAM	한재준 Jaejun Han	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	주석형 tin type	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김보현 Bohyun Kim	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김완종 Wanjong Kim	Managing Director	1.8K	₩59,200	+86.3%	₩108M ($75K)
2024-06-26	BUY	PROGRAM	박금선 Park Geum-seon	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	김윤회 Yunhoe Kim	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-06-26	BUY	PROGRAM	박정갑 Park Jeong-gap	Managing Director	5.5K	₩59,200	+86.3%	₩323M ($224K)
2024-05-03	SELL	Market Sell	황두화 Hwang Duhwa	Managing Director	-1.1K	₩80,000	-37.9%	₩85M ($59K)
2024-04-30	SELL	Market Sell	최호정 Hojeong Choi	president	-500	₩83,200	-32.6%	₩42M ($29K)
2024-04-30	SELL	Market Sell	박소현 Park So-hyun	Managing Director	-486	₩83,200	-32.6%	₩40M ($28K)
2024-04-30	SELL	Market Sell	박근원 Park Geun-won	thanks	-2.6K	₩83,200	-32.6%	₩216M ($150K)
2022-04-08	BUY	기타	전영휴 Yeonghyu Jeon	president	2.5K	₩72,700	+51.7%	₩182M ($126K)

Frequently asked questions

Who has been buying TSE stock?: 11 distinct insiders have filed 19 disclosed insider purchases in TSE (131290), most recently on 2026-05-08. 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 TSE have?: TSE has 19 buy-side and 5 sell-side disclosures on record, covering ₩1.6B ($1.1M) in total reported value, spanning 2022-04-08 to 2026-05-08.
Where does StockDrifts get TSE 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 TSE. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.