Who has been buying Samsung BioLogics stock?

11 distinct insiders have filed 7 disclosed insider purchases in Samsung BioLogics (207940), most recently on 2026-05-13. 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 Samsung BioLogics have?

Samsung BioLogics has 7 buy-side and 8 sell-side disclosures on record, covering ₩4.2B ($2.9M) in total reported value, spanning 2024-04-03 to 2026-05-13.

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.

Samsung BioLogics 207940

Company

삼성바이오로직스Samsung BioLogics

Insiders

Buys

Total Value

₩4.2B ($2.9M)

Avg Return

+0.88%

Last Filing

2026-05-13

Samsung BioLogics (207940) has 7 disclosed insider purchases and 8 disclosed disposals on record, filed by 11 distinct insiders. Together those filings cover ₩4.2B ($2.9M) in reported transaction value. The earliest filing StockDrifts holds for Samsung BioLogics is dated 2024-04-03; the most recent is 2026-05-13. Across these filings the average return since disclosure is +0.88%, 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
2026-11-03	SELL	Market Sell	김희정 Heejeong Kim	Managing Director	-10	₩1,435,000	-2.7%	₩14M ($10K)
2026-11-03	SELL	Market Sell	제임스최 James Choi	vice president	-25	₩1,435,000	-2.7%	₩36M ($25K)
2026-10-27	SELL	Market Sell	임희균 Lim Hee-gyun	Managing Director	-11	₩1,376,000	-4.3%	₩15M ($11K)
2026-10-27	SELL	Market Sell	김기중 Kim Ki-joong	Managing Director	-2	₩1,376,000	-4.3%	₩3M ($2K)
2026-10-27	SELL	Market Sell	이규호 Gyuho Lee	vice president	-2	₩1,376,000	-4.3%	₩3M ($2K)
2026-10-23	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	386	₩1,460,000	-4.9%	₩564M ($391K)
2026-10-22	BUY	PROGRAM	김희정 Heejeong Kim	Managing Director	10	₩1,361,000	+2.1%	₩14M ($9K)
2026-10-22	BUY	PROGRAM	Kevin Sharp	vice president	3	₩1,361,000	+2.1%	₩4M ($3K)
2026-10-22	BUY	PROGRAM	서상원 Seo Sang-won	Managing Director	11	₩1,361,000	+2.1%	₩15M ($10K)
2026-10-22	BUY	기타	임희균 Lim Hee-gyun	Managing Director	11	₩1,361,000	+5.4%	₩15M ($10K)
2026-10-22	BUY	PROGRAM	황인찬 Inchan Hwang	Managing Director	2	₩1,361,000	+2.1%	₩3M ($2K)
2026-10-22	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	5	₩1,361,000	+2.1%	₩7M ($5K)
2026-10-20	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	382	₩1,385,000	+0.3%	₩529M ($367K)
2026-10-20	SELL	대여	안소연 Soyeon Ahn	Managing Director	-382	₩1,385,000	-0.3%	₩529M ($367K)
2026-10-20	SELL	대여	안소연 Soyeon Ahn	Managing Director	-382	₩1,385,000	-0.3%	₩529M ($367K)
2026-10-19	BUY	기타	삼성전자 Samsung Electronics	-	567.5K	₩1,386,000	+0.2%	₩786.6B ($546.2M)
2026-10-19	BUY	PROGRAM	노균 Downy mildew	vice president	2	₩1,386,000	+0.2%	₩3M ($2K)
2026-10-19	BUY	PROGRAM	John Chongbo Rim	CEO	10	₩1,386,000	+0.2%	₩14M ($10K)
2026-10-19	BUY	PROGRAM	유승호 Seungho Yoo	vice president	5	₩1,386,000	+0.2%	₩7M ($5K)
2026-10-19	BUY	PROGRAM	김동중 Kim Dong-joong	vice president	94	₩1,386,000	+0.2%	₩130M ($90K)
2026-10-19	BUY	PROGRAM	이규호 Gyuho Lee	vice president	2	₩1,386,000	+0.2%	₩3M ($2K)
2026-10-19	BUY	PROGRAM	제임스최 James Choi	vice president	25	₩1,386,000	+0.2%	₩35M ($24K)
2026-10-19	BUY	PROGRAM	김기중 Kim Ki-joong	Managing Director	2	₩1,386,000	+0.2%	₩3M ($2K)
2026-10-19	BUY	PROGRAM	윤여완 Yoon Yeo-wan	Managing Director	1	₩1,386,000	+0.2%	₩1M ($963)
2026-10-19	BUY	PROGRAM	이재선 Jaeseon Lee	Managing Director	6	₩1,386,000	+0.2%	₩8M ($6K)
2026-10-19	BUY	PROGRAM	조영진 Youngjin Cho	Managing Director	15	₩1,386,000	+0.2%	₩21M ($14K)
2026-10-19	BUY	PROGRAM	서상원 Seo Sang-won	Managing Director	19	₩1,386,000	+0.2%	₩26M ($18K)
2026-10-19	BUY	PROGRAM	황인찬 Inchan Hwang	Managing Director	1	₩1,386,000	+0.2%	₩1M ($963)
2026-10-19	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	15	₩1,386,000	+0.2%	₩21M ($14K)
2026-10-19	BUY	기타	삼성물산 Samsung C&T	-	782.8K	₩1,386,000	+0.2%	₩1.1T ($753.5M)
2026-08-28	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	44	₩1,474,561	-5.8%	₩65M ($45K)
2026-08-19	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	12	₩1,532,114	-9.3%	₩18M ($13K)
2026-07-31	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	60	₩1,473,568	-5.7%	₩88M ($61K)
2026-07-31	SELL	Market Sell	조성환 Seonghwan Cho	Managing Director	-50	₩1,485,000	-4.8%	₩74M ($51K)
2026-07-23	SELL	대여	안소연 Soyeon Ahn	Managing Director	-120	₩1,368,384	-1.5%	₩164M ($114K)
2026-06-25	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	72	₩1,375,331	+1.0%	₩99M ($69K)
2026-05-29	SELL	대여	안소연 Soyeon Ahn	Managing Director	-72	₩1,352,508	-2.7%	₩97M ($68K)
2026-05-22	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	202	₩1,415,000	-1.8%	₩286M ($198K)
2026-05-14	SELL	대여	안소연 Soyeon Ahn	Managing Director	-2	₩1,449,000	+4.1%	₩3M ($2K)
2026-05-13	BUY	기타	조성환 Seonghwan Cho	Managing Director	50	₩1,410,000	+0.3%	₩71M ($49K)
2026-04-02	SELL	대여	안소연 Soyeon Ahn	Managing Director	-200	₩1,585,000	+12.4%	₩317M ($220K)
2026-02-03	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	333	-	-	-
2026-01-30	SELL	대여	안소연 Soyeon Ahn	Managing Director	-10	-	-	-
2026-01-26	SELL	대여	안소연 Soyeon Ahn	Managing Director	-26	-	-	-
2026-01-23	SELL	대여	안소연 Soyeon Ahn	Managing Director	-1	-	-	-
2026-01-22	SELL	대여	안소연 Soyeon Ahn	Managing Director	-38	-	-	-
2026-01-19	SELL	대여	안소연 Soyeon Ahn	Managing Director	-285	-	-	-
2026-01-19	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	92	-	-	-
2026-01-15	BUY	PROGRAM	안소연 Soyeon Ahn	Managing Director	27	-	-	-
2025-12-29	SELL	Market Sell	김동중 Kim Dong-joong	vice president	-210	₩1,706,000	-0.6%	₩358M ($249K)

Showing the 50 most recent of 94 filings.

Frequently asked questions

Who has been buying Samsung BioLogics stock?: 11 distinct insiders have filed 7 disclosed insider purchases in Samsung BioLogics (207940), most recently on 2026-05-13. 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 Samsung BioLogics have?: Samsung BioLogics has 7 buy-side and 8 sell-side disclosures on record, covering ₩4.2B ($2.9M) in total reported value, spanning 2024-04-03 to 2026-05-13.
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.