Who has been buying TF stock?

1 distinct insiders have filed 23 disclosed insider purchases in TF (425420), most recently on 2026-02-12. 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 TF have?

TF has 23 buy-side and 0 sell-side disclosures on record, covering ₩105M ($73K) in total reported value, spanning 2024-07-24 to 2026-02-12.

Where does StockDrifts get TF 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.

TF 425420

Company

티에프이TF

Insiders

Buys

Total Value

₩105M ($73K)

Avg Return

+130.71%

Last Filing

2026-02-12

TF (425420) has 23 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩105M ($73K) in reported transaction value. The earliest filing StockDrifts holds for TF is dated 2024-07-24; the most recent is 2026-02-12. 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 +130.71%, 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
2026-02-12	BUY	자사주상여금	김용훈 Yonghoon Kim	Managing Director	20.0K	₩45,400	-3.5%	₩908M ($631K)
2025-02-13	BUY	자사주상여금	김용훈 Yonghoon Kim	Managing Director	10.0K	₩19,010	+130.4%	₩190M ($132K)
2024-12-03	SELL	증여	문성주 Seongju Moon	CEO	-40.0K	₩14,470	-202.7%	₩579M ($402K)
2024-08-06	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	500	₩18,600	+135.5%	₩9M ($6K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	27	₩17,490	+150.4%	₩472K ($328)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	551	₩17,490	+150.4%	₩10M ($7K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	100	₩17,490	+150.4%	₩2M ($1K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	29	₩17,490	+150.4%	₩507K ($352)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	116	₩17,490	+150.4%	₩2M ($1K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	25	₩17,490	+150.4%	₩437K ($304)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	82	₩17,490	+150.4%	₩1M ($996)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	295	₩17,490	+150.4%	₩5M ($4K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	64	₩17,490	+150.4%	₩1M ($777)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	800	₩17,490	+150.4%	₩14M ($10K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	678	₩17,490	+150.4%	₩12M ($8K)
2024-08-05	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	233	₩17,490	+150.4%	₩4M ($3K)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	18	₩20,550	+113.1%	₩370K ($257)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	382	₩20,550	+113.1%	₩8M ($5K)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	36	₩20,550	+113.1%	₩740K ($514)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	50	₩20,550	+113.1%	₩1M ($714)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	201	₩20,550	+113.1%	₩4M ($3K)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	117	₩20,550	+113.1%	₩2M ($2K)
2024-08-02	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	296	₩20,550	+113.1%	₩6M ($4K)
2024-08-01	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	400	₩22,900	+91.3%	₩9M ($6K)
2024-08-01	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	12	₩22,900	+91.3%	₩275K ($191)
2024-08-01	BUY	Market Buy	김용훈 Yonghoon Kim	Managing Director	488	₩22,900	+91.3%	₩11M ($8K)
2024-07-30	BUY	기타	김용훈 Yonghoon Kim	Managing Director	20.8K	₩22,300	+96.4%	₩464M ($322K)
2024-07-24	SELL	장외매도	문성주 Seongju Moon	CEO	-300.0K	₩24,200	-81.0%	₩7.3B ($5.0M)
2024-07-24	SELL	장외매도	조성균 Cho Seong-gyun	Managing Director	-350.0K	₩24,200	-81.0%	₩8.5B ($5.9M)

Frequently asked questions

Who has been buying TF stock?: 1 distinct insiders have filed 23 disclosed insider purchases in TF (425420), most recently on 2026-02-12. 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 TF have?: TF has 23 buy-side and 0 sell-side disclosures on record, covering ₩105M ($73K) in total reported value, spanning 2024-07-24 to 2026-02-12.
Where does StockDrifts get TF 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 TF. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.