Who has been buying bio plus stock?

2 distinct insiders have filed 12 disclosed insider purchases in bio plus (099430), most recently on 2026-02-04. 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 bio plus have?

bio plus has 12 buy-side and 0 sell-side disclosures on record, covering ₩2.7B ($1.9M) in total reported value, spanning 2024-06-04 to 2026-02-04.

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.

bio plus 099430

Company

바이오플러스bio plus

Insiders

Buys

Total Value

₩2.7B ($1.9M)

Avg Return

+7.67%

Last Filing

2026-02-04

bio plus (099430) has 12 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩2.7B ($1.9M) in reported transaction value. The earliest filing StockDrifts holds for bio plus is dated 2024-06-04; the most recent is 2026-02-04. Across these filings the average return since disclosure is +7.67%, 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
2026-02-04	BUY	Market Buy	한인석 Inseok Han	vice president	1.9K	₩5,340	+3.4%	₩10M ($7K)
2026-02-03	BUY	Market Buy	한인석 Inseok Han	vice president	3.6K	₩5,260	+4.9%	₩19M ($13K)
2026-01-28	BUY	Market Buy	한인석 Inseok Han	vice president	900	₩5,480	+0.7%	₩5M ($3K)
2026-01-27	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	114.4K	₩5,460	+1.1%	₩625M ($434K)
2026-01-26	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	82.4K	₩5,300	+4.2%	₩437M ($303K)
2026-01-26	BUY	Market Buy	한인석 Inseok Han	vice president	1.8K	₩5,300	+4.2%	₩10M ($7K)
2026-01-23	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	133.5K	₩5,330	+3.6%	₩712M ($494K)
2024-11-18	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	20.0K	₩4,820	+14.5%	₩96M ($67K)
2024-11-05	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	52.1K	₩5,520	+0.0%	₩288M ($200K)
2024-11-04	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	47.9K	₩5,390	+2.4%	₩258M ($179K)
2024-08-31	SELL	임원퇴임	선재욱 Seon Jae-wook	pro	-20.0K	₩5,800	+4.8%	₩116M ($81K)
2024-08-31	SELL	임원퇴임	선재욱 Seon Jae-wook	pro	-212.2K	₩5,800	+4.8%	₩1.2B ($855K)
2024-07-17	SELL	증여	정현규 Hyeongyu Jeong	CEO	-300.0K	₩6,190	+10.8%	₩1.9B ($1.3M)
2024-06-05	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	20.0K	₩4,330	+27.5%	₩87M ($60K)
2024-06-04	BUY	Market Buy	정현규 Hyeongyu Jeong	CEO	30.0K	₩4,395	+25.6%	₩132M ($92K)

Frequently asked questions

Who has been buying bio plus stock?: 2 distinct insiders have filed 12 disclosed insider purchases in bio plus (099430), most recently on 2026-02-04. 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 bio plus have?: bio plus has 12 buy-side and 0 sell-side disclosures on record, covering ₩2.7B ($1.9M) in total reported value, spanning 2024-06-04 to 2026-02-04.
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.