Who has been buying TYM stock?

3 distinct insiders have filed 6 disclosed insider purchases in TYM (002900), most recently on 2026-07-01. 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 TYM have?

TYM has 6 buy-side and 3 sell-side disclosures on record, covering ₩509M ($353K) in total reported value, spanning 2024-03-27 to 2026-07-01.

Where does StockDrifts get TYM 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.

TYM 002900

Company

TYM

Insiders

Buys

Total Value

₩509M ($353K)

Avg Return

-7.81%

Last Filing

2026-07-01

TYM (002900) has 6 disclosed insider purchases and 3 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩509M ($353K) in reported transaction value. The earliest filing StockDrifts holds for TYM is dated 2024-03-27; the most recent is 2026-07-01. 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 -7.81%, 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
2026-08-14	BUY	수증	김소원 Kim So-won	CEO	954.1K	₩7,380	+0.0%	₩7.0B ($4.9M)
2026-08-10	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	4.0K	₩6,880	+4.5%	₩25M ($17K)
2026-07-01	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	4.0K	₩6,220	+1.0%	₩25M ($17K)
2026-06-30	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	4.0K	₩6,020	+4.3%	₩24M ($17K)
2026-06-29	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	2.0K	₩6,130	+2.5%	₩12M ($9K)
2026-06-12	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	2.2K	₩6,480	-0.6%	₩14M ($10K)
2026-06-10	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	7.8K	₩6,000	+13.3%	₩47M ($33K)
2026-05-19	BUY	Market Buy	최웅경 Choi Woong-kyung	Vice President (CSO)	4.0K	₩8,150	+0.3%	₩33M ($23K)
2026-02-26	SELL	시간외매매	김식 Kim Sik	vice president	-800.0K	₩7,870	+0.0%	₩6.3B ($4.4M)
2026-02-26	SELL	시간외매매	김소원 Kim So-won	CSO	-400.0K	₩7,870	+0.0%	₩3.1B ($2.2M)
2026-01-12	SELL	Market Sell	김식 Kim Sik	vice president	-262	₩6,490	-21.3%	₩2M ($1K)
2026-01-09	SELL	Market Sell	김식 Kim Sik	vice president	-41.3K	₩6,350	-23.9%	₩262M ($182K)
2025-05-26	SELL	Market Sell	강근영 Kang Geun-young	Outside Director	-16.7K	₩5,400	-45.7%	₩90M ($62K)
2024-11-15	BUY	기타	김식 Kim Sik	vice president	450.0K	₩4,825	+63.1%	₩2.2B ($1.5M)
2024-11-15	BUY	기타	김소원 Kim So-won	CSO	450.0K	₩4,825	+63.1%	₩2.2B ($1.5M)
2024-03-29	BUY	신규선임	강근영 Kang Geun-young	Outside Director	16.7K	₩5,400	+45.7%	₩90M ($62K)
2024-03-27	SELL	장외매도	김식 Kim Sik	Managing Director	-450.0K	₩5,550	-41.8%	₩2.5B ($1.7M)
2024-03-27	SELL	장외매도	김소원 Kim So-won	CSO	-450.0K	₩5,550	-41.8%	₩2.5B ($1.7M)

Frequently asked questions

Who has been buying TYM stock?: 3 distinct insiders have filed 6 disclosed insider purchases in TYM (002900), most recently on 2026-07-01. 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 TYM have?: TYM has 6 buy-side and 3 sell-side disclosures on record, covering ₩509M ($353K) in total reported value, spanning 2024-03-27 to 2026-07-01.
Where does StockDrifts get TYM 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 TYM. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.