Who has been buying Tium Bio stock?

3 distinct insiders have filed 13 disclosed insider purchases in Tium Bio (321550), 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 Tium Bio have?

Tium Bio has 13 buy-side and 1 sell-side disclosures on record, covering ₩356M ($247K) in total reported value, spanning 2024-04-16 to 2026-06-24.

Where does StockDrifts get Tium Bio 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.

Tium Bio 321550

Company

티움바이오Tium Bio

Insiders

Buys

Total Value

₩356M ($247K)

Avg Return

+12.13%

Last Filing

2026-06-24

Tium Bio (321550) has 13 disclosed insider purchases and 1 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩356M ($247K) in reported transaction value. The earliest filing StockDrifts holds for Tium Bio is dated 2024-04-16; 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 +12.13%, 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	김훈택 Hoontaek Kim	CEO	5.7K	-	-	-
2026-06-24	SELL	Market Sell	김훈택 Hoontaek Kim	CEO	-483	-	-	-
2026-06-23	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	37.0K	-	-	-
2026-06-22	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	28.0K	-	-	-
2025-10-23	SELL	전환권등소멸	김훈택 Hoontaek Kim	CEO	-14.3K	₩6,000	-11.7%	₩86M ($60K)
2025-09-26	SELL	증여	고현실 high reality	vice president	-30.0K	₩5,340	-25.5%	₩160M ($111K)
2025-09-26	BUY	주식매수선택권	송인영 Song In-young	vice president	6.0K	₩5,340	+25.5%	₩32M ($22K)
2025-09-26	BUY	주식매수선택권	김선미 Seonmi Kim	President (Internal Director)	3.0K	₩5,340	+25.5%	₩16M ($11K)
2025-09-26	BUY	주식매수선택권	고현실 high reality	vice president	30.0K	₩5,340	+25.5%	₩160M ($111K)
2025-07-22	SELL	전환권등소멸	김훈택 Hoontaek Kim	CEO	-4.8K	₩5,170	-29.6%	₩25M ($17K)
2025-07-03	SELL	전환등	김훈택 Hoontaek Kim	CEO	-76.2K	₩5,030	-33.2%	₩383M ($266K)
2025-07-03	BUY	전환사채의권리행사	김훈택 Hoontaek Kim	CEO	76.2K	₩5,030	+33.2%	₩383M ($266K)
2025-04-21	BUY	장외매수	김훈택 Hoontaek Kim	CEO	1.8M	₩4,320	+55.1%	₩7.8B ($5.4M)
2025-04-21	SELL	장외매도	김훈택 Hoontaek Kim	CEO	-900.0K	₩4,320	-55.1%	₩3.9B ($2.7M)
2025-03-19	BUY	신규선임	류기태 Ryu Ki-tae	vice president	57.5K	₩3,240	+106.8%	₩186M ($129K)
2024-12-23	BUY	행사가액조정	김훈택 Hoontaek Kim	CEO	28.6K	₩4,120	+62.6%	₩118M ($82K)
2024-11-21	BUY	Market Buy	고현실 high reality	vice president	6.0K	₩4,850	+38.1%	₩29M ($20K)
2024-11-13	BUY	Market Buy	고현실 high reality	vice president	4.0K	₩4,900	+36.7%	₩20M ($14K)
2024-11-08	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	9.0K	₩5,300	+26.4%	₩48M ($33K)
2024-11-07	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	2.6K	₩5,450	+22.9%	₩14M ($10K)
2024-11-06	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	25.4K	₩5,300	+26.4%	₩135M ($93K)
2024-05-22	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	5.3K	₩7,210	-7.1%	₩38M ($26K)
2024-05-21	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	2.6K	₩7,350	-8.8%	₩19M ($13K)
2024-05-20	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	4.3K	₩7,080	-5.4%	₩30M ($21K)
2024-05-17	BUY	Market Buy	김훈택 Hoontaek Kim	CEO	1.9K	₩7,150	-6.3%	₩14M ($9K)
2024-05-10	SELL	시간외매매	한국투자글로벌제약산업육성사모투자전문회사 Korea Investment Global Pharmaceutical Industry Promotion Private Investment Company	-	-800.0K	₩7,430	+9.8%	₩5.9B ($4.1M)
2024-04-16	BUY	Market Buy	전재은 Jeon Jae-eun	Managing Director	1.4K	₩6,820	-1.8%	₩10M ($7K)

Frequently asked questions

Who has been buying Tium Bio stock?: 3 distinct insiders have filed 13 disclosed insider purchases in Tium Bio (321550), 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 Tium Bio have?: Tium Bio has 13 buy-side and 1 sell-side disclosures on record, covering ₩356M ($247K) in total reported value, spanning 2024-04-16 to 2026-06-24.
Where does StockDrifts get Tium Bio 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 Tium Bio. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.