Who has been buying Adbiotech stock?

3 distinct insiders have filed 3 disclosed insider purchases in Adbiotech (179530), most recently on 2026-06-05. 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 Adbiotech have?

Adbiotech has 3 buy-side and 1 sell-side disclosures on record, covering ₩67M ($47K) in total reported value, spanning 2024-03-08 to 2026-06-05.

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.

Adbiotech 179530

Company

애드바이오텍Adbiotech

Insiders

Buys

Total Value

₩67M ($47K)

Avg Return

-9.19%

Last Filing

2026-06-05

Adbiotech (179530) has 3 disclosed insider purchases and 1 disclosed disposals on record, filed by 3 distinct insiders. Together those filings cover ₩67M ($47K) in reported transaction value. The earliest filing StockDrifts holds for Adbiotech is dated 2024-03-08; the most recent is 2026-06-05. Across these filings the average return since disclosure is -9.19%, 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
2026-06-05	BUY	제3자배정유상증자	비케이파트너스투자조합1호 BK Partners Investment Association No. 1	-	6.0M	-	-	-
2026-01-19	BUY	장외매수	정홍걸 Jeong Hong-geol	torture	174.6K	₩2,125	-23.9%	₩371M ($258K)
2026-01-14	BUY	제3자배정유상증자	비케이파트너스투자조합2호 BK Partners Investment Association No. 2	-	3.3M	₩1,866	-13.3%	₩6.2B ($4.3M)
2025-12-10	BUY	Market Buy	김동현 Donghyun Kim	CEO	1.0K	₩2,785	-41.9%	₩3M ($2K)
2025-11-20	BUY	제3자배정유상증자	비케이파트너스투자조합1호 BK Partners Investment Association No. 1	-	3.4M	₩3,485	-53.6%	₩11.9B ($8.2M)
2025-10-17	SELL	Market Sell	최경민 Kyeongmin Choi	moving	-12.0K	₩3,670	+55.9%	₩44M ($31K)
2025-09-24	SELL	장외매도	정홍걸 Jeong Hong-geol	torture	-1.5M	₩4,170	+61.2%	₩6.1B ($4.2M)
2025-06-05	SELL	장외매도	정은정 Jeong Eun-jeong	general manager	-620.0K	₩1,915	+15.5%	₩1.2B ($825K)
2025-03-11	BUY	유상신주취득	박수현 Park Soo-hyun	general manager	10.0K	₩1,716	-5.7%	₩17M ($12K)
2025-03-11	BUY	유상신주취득	정은정 Jeong Eun-jeong	general manager	20.0K	₩1,716	-5.7%	₩34M ($24K)
2025-03-11	BUY	Market Buy	정홍걸 Jeong Hong-geol	torture	11.0K	₩1,716	-5.7%	₩19M ($13K)
2025-03-11	BUY	유상신주취득	정홍걸 Jeong Hong-geol	torture	200.0K	₩1,716	-5.7%	₩343M ($238K)
2025-03-11	BUY	유상신주취득	최경민 Kyeongmin Choi	general manager	15.0K	₩1,716	-5.7%	₩26M ($18K)
2024-03-08	BUY	Market Buy	최경민 Kyeongmin Choi	general manager	597	₩2,945	-45.1%	₩2M ($1K)

Frequently asked questions

Who has been buying Adbiotech stock?: 3 distinct insiders have filed 3 disclosed insider purchases in Adbiotech (179530), most recently on 2026-06-05. 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 Adbiotech have?: Adbiotech has 3 buy-side and 1 sell-side disclosures on record, covering ₩67M ($47K) in total reported value, spanning 2024-03-08 to 2026-06-05.
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.