Who has been buying bio port stock?

5 distinct insiders have filed 5 disclosed insider purchases in bio port (188040), most recently on 2026-07-16. 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 port have?

bio port has 5 buy-side and 3 sell-side disclosures on record, covering ₩4.8B ($3.3M) in total reported value, spanning 2025-05-16 to 2026-07-16.

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 port 188040

Company

바이오포트bio port

Insiders

Buys

Total Value

₩4.8B ($3.3M)

Avg Return

+21.73%

Last Filing

2026-07-16

bio port (188040) has 5 disclosed insider purchases and 3 disclosed disposals on record, filed by 5 distinct insiders. Together those filings cover ₩4.8B ($3.3M) in reported transaction value. The earliest filing StockDrifts holds for bio port is dated 2025-05-16; the most recent is 2026-07-16. Across these filings the average return since disclosure is +21.73%, 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
2026-08-31	BUY	Market Buy	김기영 Kiyoung Kim	vice president	1.4K	₩5,160	-1.2%	₩7M ($5K)
2026-08-28	BUY	Market Buy	김기영 Kiyoung Kim	vice president	1.2K	₩5,080	+0.4%	₩6M ($4K)
2026-08-27	BUY	Market Buy	김기영 Kiyoung Kim	vice president	687	₩5,210	-2.1%	₩3M ($2K)
2026-08-26	BUY	Market Buy	김기영 Kiyoung Kim	vice president	1.4K	₩5,230	-2.5%	₩7M ($5K)
2026-08-25	BUY	Market Buy	김기영 Kiyoung Kim	vice president	830	₩5,230	-2.5%	₩4M ($3K)
2026-08-24	BUY	Market Buy	김성구 Seonggu Kim	CEO	1.6K	₩5,040	-0.4%	₩8M ($6K)
2026-08-21	BUY	Market Buy	김성구 Seonggu Kim	CEO	1.7K	₩4,990	+0.6%	₩9M ($6K)
2026-08-20	BUY	Market Buy	김성구 Seonggu Kim	CEO	1.7K	₩4,995	+0.5%	₩9M ($6K)
2026-07-16	BUY	Market Buy	김성구 Seonggu Kim	CEO	10.2K	₩5,230	+0.0%	₩50M ($35K)
2026-07-16	BUY	Market Buy	김기영 Kiyoung Kim	vice president	6.2K	₩5,230	+0.0%	₩30M ($21K)
2026-07-16	BUY	Market Buy	성경민 Seong Seong-min	Managing Director	2.0K	₩5,230	+0.0%	₩10M ($7K)
2026-07-16	BUY	Market Buy	이권희 Kwonhee Lee	Managing Director	2.0K	₩5,230	+0.0%	₩10M ($7K)
2026-03-06	BUY	Market Buy	이권희 Kwonhee Lee	Managing Director	1.5K	-	-	-
2025-05-20	SELL	Market Sell	한양에스더블유 헬시푸드 신기술조합 Hanyang SW Healthy Food New Technology Association	-	-53.4K	₩14,440	+51.5%	₩771M ($536K)
2025-05-19	SELL	Market Sell	한양에스더블유 헬시푸드 신기술조합 Hanyang SW Healthy Food New Technology Association	-	-53.0K	₩14,150	+50.5%	₩750M ($521K)
2025-05-16	BUY	신규상장	김기영 Kiyoung Kim	Internal director	275.0K	₩14,020	-50.1%	₩3.9B ($2.7M)
2025-05-16	BUY	신규상장	한양에스더블유 헬시푸드 신기술조합 Hanyang SW Healthy Food New Technology Association	-	665.1K	₩14,020	-50.1%	₩9.3B ($6.5M)
2025-05-16	BUY	신규상장	김성구 Seonggu Kim	CEO	1.5M	₩14,020	-50.1%	₩21.3B ($14.8M)
2025-05-16	SELL	Market Sell	한양에스더블유 헬시푸드 신기술조합 Hanyang SW Healthy Food New Technology Association	-	-226.1K	₩14,020	+50.1%	₩3.2B ($2.2M)
2025-05-16	BUY	신규상장	성경민 Seong Seong-min	Internal director	125.0K	₩14,020	-50.1%	₩1.8B ($1.2M)

Frequently asked questions

Who has been buying bio port stock?: 5 distinct insiders have filed 5 disclosed insider purchases in bio port (188040), most recently on 2026-07-16. 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 port have?: bio port has 5 buy-side and 3 sell-side disclosures on record, covering ₩4.8B ($3.3M) in total reported value, spanning 2025-05-16 to 2026-07-16.
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.