Who has been buying BiotoxTech stock?

4 distinct insiders have filed 11 disclosed insider purchases in BiotoxTech (086040), most recently on 2026-02-09. 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 BiotoxTech have?

BiotoxTech has 11 buy-side and 1 sell-side disclosures on record, covering ₩196M ($136K) in total reported value, spanning 2024-03-29 to 2026-02-09.

Where does StockDrifts get BiotoxTech 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.

BiotoxTech 086040

Company

바이오톡스텍BiotoxTech

Insiders

Buys

Total Value

₩196M ($136K)

Avg Return

+8.29%

Last Filing

2026-02-09

BiotoxTech (086040) has 11 disclosed insider purchases and 1 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩196M ($136K) in reported transaction value. The earliest filing StockDrifts holds for BiotoxTech is dated 2024-03-29; the most recent is 2026-02-09. 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 +8.29%, 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
2026-08-06	BUY	Market Buy	정수용 For water purification	vice president	10.1K	₩2,260	-0.2%	₩22M ($15K)
2026-07-29	BUY	Market Buy	최주영 Jooyoung Choi	Managing Director	212	₩2,080	+6.0%	₩448K ($311)
2026-07-28	BUY	Market Buy	최주영 Jooyoung Choi	Managing Director	426	₩2,135	+3.3%	₩889K ($618)
2026-07-27	BUY	Market Buy	김지영 Jiyoung Kim	moving	4.3K	₩2,205	-6.1%	₩9M ($6K)
2026-07-23	BUY	Market Buy	최주영 Jooyoung Choi	Managing Director	100	₩2,175	+1.4%	₩208K ($144)
2026-02-09	BUY	Market Buy	정수용 For water purification	vice president	19.8K	₩2,590	+25.3%	₩51M ($36K)
2026-01-22	BUY	Market Buy	최주영 Jooyoung Choi	Managing Director	3.7K	₩2,610	+24.3%	₩10M ($7K)
2026-01-21	BUY	Market Buy	정수용 For water purification	vice president	18.9K	₩2,635	+23.1%	₩50M ($35K)
2026-01-15	BUY	Market Buy	박선희 Seonhee Park	Managing Director	7.3K	₩2,670	+21.5%	₩19M ($13K)
2026-01-08	BUY	Market Buy	김지영 Jiyoung Kim	moving	3.8K	₩2,700	+20.2%	₩10M ($7K)
2025-12-10	BUY	Market Buy	정수용 For water purification	Managing Director	18.7K	₩2,645	+22.7%	₩49M ($34K)
2025-01-10	BUY	Market Buy	박선희 Seonhee Park	Managing Director	40	₩3,340	-2.8%	₩134K ($93)
2025-01-10	BUY	Market Buy	박선희 Seonhee Park	Managing Director	190	₩3,340	-2.8%	₩635K ($441)
2024-12-09	BUY	Market Buy	박선희 Seonhee Park	Managing Director	310	₩3,000	+8.2%	₩930K ($646)
2024-08-12	BUY	Market Buy	박선희 Seonhee Park	Managing Director	160	₩5,100	-36.4%	₩816K ($567)
2024-06-13	SELL	Market Sell	박선희 Seonhee Park	Managing Director	-450	₩5,390	+39.8%	₩2M ($2K)
2024-05-08	BUY	Market Buy	박선희 Seonhee Park	Managing Director	200	₩5,750	-43.6%	₩1M ($799)
2024-03-29	BUY	신규선임	박선희 Seonhee Park	Managing Director	1.0K	₩6,000	-45.9%	₩6M ($4K)
2024-03-29	BUY	신규선임	박선희 Seonhee Park	Managing Director	2.0K	₩6,000	-45.9%	₩12M ($8K)

Frequently asked questions

Who has been buying BiotoxTech stock?: 4 distinct insiders have filed 11 disclosed insider purchases in BiotoxTech (086040), most recently on 2026-02-09. 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 BiotoxTech have?: BiotoxTech has 11 buy-side and 1 sell-side disclosures on record, covering ₩196M ($136K) in total reported value, spanning 2024-03-29 to 2026-02-09.
Where does StockDrifts get BiotoxTech 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 BiotoxTech. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.