Who has been buying biosmart stock?

2 distinct insiders have filed 17 disclosed insider purchases in biosmart (038460), most recently on 2026-07-15. 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 biosmart have?

biosmart has 17 buy-side and 0 sell-side disclosures on record, covering ₩447M ($310K) in total reported value, spanning 2024-04-09 to 2026-07-15.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

biosmart 038460

Company

바이오스마트biosmart

Insiders

Buys

Total Value

₩447M ($310K)

Avg Return

-1.22%

Last Filing

2026-07-15

biosmart (038460) has 17 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩447M ($310K) in reported transaction value. The earliest filing StockDrifts holds for biosmart is dated 2024-04-09; the most recent is 2026-07-15. Across these filings the average return since disclosure is -1.22%, 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
2026-09-07	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	10.4K	₩2,660	+1.3%	₩28M ($19K)
2026-09-04	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	2.0K	₩2,685	+0.4%	₩5M ($4K)
2026-09-03	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	7.5K	₩2,645	+1.9%	₩20M ($14K)
2026-07-29	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	21.0K	₩2,435	+7.2%	₩58M ($41K)
2026-07-24	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	14.0K	₩2,735	-4.6%	₩39M ($27K)
2026-07-21	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	8.4K	₩2,690	+1.7%	₩23M ($16K)
2026-07-20	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	10.5K	₩2,625	+4.2%	₩29M ($20K)
2026-07-15	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	15.0K	₩2,780	-2.9%	₩40M ($28K)
2026-07-14	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	11.0K	₩2,650	+1.9%	₩30M ($21K)
2026-07-13	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	14.0K	₩2,635	+2.5%	₩36M ($25K)
2026-07-10	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	22.6K	₩2,715	-0.6%	₩58M ($40K)
2026-07-09	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	1.5K	₩2,515	+7.4%	₩4M ($3K)
2026-07-09	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	13.5K	₩2,515	+7.4%	₩36M ($25K)
2026-07-08	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	1.0K	₩2,515	+0.0%	₩3M ($2K)
2026-07-07	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	4.0K	₩2,550	-1.4%	₩10M ($7K)
2026-07-07	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	5.5K	₩2,550	-1.4%	₩14M ($10K)
2026-07-06	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	13.5K	₩2,590	-2.9%	₩35M ($24K)
2026-07-06	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	10.0K	₩2,590	-2.9%	₩26M ($18K)
2026-07-03	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	13.5K	₩2,635	-4.5%	₩36M ($25K)
2026-07-03	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	13.5K	₩2,635	-4.5%	₩36M ($25K)
2026-07-02	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	3.0K	₩2,580	-2.5%	₩8M ($5K)
2026-07-02	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	17.9K	₩2,580	-2.5%	₩46M ($32K)
2026-07-01	BUY	Market Buy	윤호권 Yun Ho-kwon	CEO	5.0K	₩2,700	-6.8%	₩14M ($9K)
2026-07-01	BUY	Market Buy	박혜린 Hye-rin Park	Chairman	6.9K	₩2,700	-6.8%	₩19M ($13K)
2024-10-14	BUY	전환사채의권리행사	박혜린 Hye-rin Park	Chairman	1.3M	₩4,205	+29.1%	₩5.3B ($3.7M)
2024-10-14	SELL	전환등	박혜린 Hye-rin Park	Chairman	-1.3M	₩4,205	-29.1%	₩5.3B ($3.7M)
2024-10-14	SELL	전환등	윤호권 Yun Ho-kwon	CEO	-187.0K	₩4,205	-29.1%	₩786M ($546K)
2024-10-14	BUY	전환사채의권리행사	윤호권 Yun Ho-kwon	CEO	187.0K	₩4,205	+29.1%	₩786M ($546K)
2024-07-16	BUY	CB인수	윤호권 Yun Ho-kwon	CEO	155.8K	₩4,570	+18.8%	₩712M ($494K)
2024-07-16	BUY	CB인수	박혜린 Hye-rin Park	Chairman	934.9K	₩4,570	+18.8%	₩4.3B ($3.0M)
2024-04-16	BUY	CB인수	박혜린 Hye-rin Park	Chairman	155.8K	₩5,200	+4.4%	₩810M ($563K)
2024-04-09	BUY	CB인수	박혜린 Hye-rin Park	Chairman	46.7K	₩4,090	+32.8%	₩191M ($133K)

Frequently asked questions

Who has been buying biosmart stock?: 2 distinct insiders have filed 17 disclosed insider purchases in biosmart (038460), most recently on 2026-07-15. 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 biosmart have?: biosmart has 17 buy-side and 0 sell-side disclosures on record, covering ₩447M ($310K) in total reported value, spanning 2024-04-09 to 2026-07-15.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.