Who has been buying Yubion stock?

2 distinct insiders have filed 8 disclosed insider purchases in Yubion (038880), most recently on 2026-07-08. 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 Yubion have?

Yubion has 8 buy-side and 0 sell-side disclosures on record, covering ₩77M ($53K) in total reported value, spanning 2024-03-16 to 2026-07-08.

Where does StockDrifts get Yubion insider data?

From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.

Do insider buys in Korean stocks predict returns?

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

Yubion 038880

Company

아이에이Yubion

Insiders

Buys

Total Value

₩77M ($53K)

Avg Return

+1.08%

Last Filing

2026-07-08

Yubion (038880) has 8 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩77M ($53K) in reported transaction value. The earliest filing StockDrifts holds for Yubion is dated 2024-03-16; the most recent is 2026-07-08. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is +1.08%, 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
2026-08-14	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	880	₩4,285	+0.0%	₩3M ($2K)
2026-08-13	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	510	₩3,675	+16.6%	₩2M ($1K)
2026-08-12	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	1.3K	₩3,450	+24.2%	₩5M ($3K)
2026-08-11	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	655	₩3,495	+22.6%	₩2M ($2K)
2026-08-10	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	880	₩3,480	+23.1%	₩3M ($2K)
2026-08-07	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	190	₩3,530	+21.4%	₩705K ($490)
2026-08-06	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	1.2K	₩3,610	-2.2%	₩4M ($3K)
2026-08-05	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	132	₩3,670	-3.8%	₩454K ($315)
2026-08-04	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	460	₩3,570	-1.1%	₩1M ($1K)
2026-07-31	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	400	₩3,340	+5.7%	₩1M ($950)
2026-07-30	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	3.8K	₩3,065	+15.2%	₩13M ($9K)
2026-07-10	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	400	₩2,640	+69.1%	₩968K ($672)
2026-07-08	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	4.0K	₩2,325	+3.0%	₩9M ($6K)
2026-07-01	BUY	Market Buy	한성용 Seongyong Han	CEO	15.0K	₩2,410	-0.6%	₩36M ($25K)
2026-07-01	BUY	Market Buy	최동철 Choi Dong-cheol	Internal director	100	₩2,410	-0.6%	₩241K ($167)
2026-06-12	SELL	자본감소	디씨이 DC	-	-7.5M	₩3,350	+28.5%	₩25.1B ($17.4M)
2026-06-12	SELL	자본감소	디씨이 DC	-	-3.4M	₩3,350	+28.5%	₩11.2B ($7.8M)
2026-06-12	SELL	자본감소	최동철 Choi Dong-cheol	Internal director	-1.0M	₩3,350	+28.5%	₩3.5B ($2.4M)
2026-04-30	BUY	Market Buy	한성용 Seongyong Han	CEO	18.0K	₩977	+2.1%	₩18M ($12K)
2026-04-10	SELL	주식병합	디씨이 DC	-	-37.7M	₩135	-676.3%	₩5.1B ($3.5M)
2026-04-10	SELL	주식병합	디씨이 DC	-	-84.3M	₩135	-676.3%	₩11.4B ($7.9M)
2026-04-10	SELL	주식병합	최동철 Choi Dong-cheol	Internal director	-11.8M	₩135	-676.3%	₩1.6B ($1.1M)
2026-04-03	BUY	Market Buy	한성용 Seongyong Han	CEO	100.0K	₩133	+1.5%	₩13M ($9K)
2026-03-18	BUY	Market Buy	한성용 Seongyong Han	vice president	98.9K	-	-	-
2026-03-17	BUY	Market Buy	한성용 Seongyong Han	vice president	1.1K	-	-	-
2026-03-04	BUY	Market Buy	한성용 Seongyong Han	vice president	100.0K	-	-	-
2026-02-12	BUY	행사가액조정	최동철 Choi Dong-cheol	CEO	1.2M	₩138	+9.4%	₩171M ($119K)
2026-02-12	BUY	CB인수	디씨이 DC	-	22.9M	₩138	+9.4%	₩3.2B ($2.2M)
2025-05-04	BUY	행사가액조정	디씨이 DC	-	4.3M	₩199	-24.1%	₩846M ($588K)
2025-05-04	BUY	행사가액조정	최동철 Choi Dong-cheol	CEO	2.7M	₩199	-24.1%	₩529M ($367K)
2025-04-17	BUY	장외매수	디씨이 DC	-	24.7M	₩210	-28.1%	₩5.2B ($3.6M)
2025-04-17	SELL	장외매도	김동진 Dongjin Kim	guitar	-24.7M	₩210	+28.1%	₩5.2B ($3.6M)
2025-04-17	SELL	기타	임상규 Im Sang-gyu	Managing Director	-2.8K	₩210	+28.1%	₩596K ($414)
2025-04-17	SELL	임원퇴임	이용준 Yongjun Lee	vice president	-1.9K	₩210	+28.1%	₩398K ($276)
2025-03-28	BUY	신규선임	최동철 Choi Dong-cheol	CEO	9.2M	₩231	-34.6%	₩2.1B ($1.5M)
2025-02-04	BUY	CB인수	디씨이 DC	-	14.7M	₩249	-39.4%	₩3.7B ($2.5M)
2025-01-21	BUY	제3자배정유상증자	디씨이 DC	-	48.3M	₩263	-42.6%	₩12.7B ($8.8M)
2024-03-16	BUY	제3자배정유상증자	디씨이 DC	-	20.6M	₩410	-63.2%	₩8.4B ($5.9M)

Frequently asked questions

Who has been buying Yubion stock?: 2 distinct insiders have filed 8 disclosed insider purchases in Yubion (038880), most recently on 2026-07-08. 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 Yubion have?: Yubion has 8 buy-side and 0 sell-side disclosures on record, covering ₩77M ($53K) in total reported value, spanning 2024-03-16 to 2026-07-08.
Where does StockDrifts get Yubion insider data?: From DART D001/D002 insider disclosures — the official filing system run by the Financial Supervisory Service (Korea). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from DART.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean DART filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Source filings

Every trade listed above is disclosed in DART D001/D002 insider disclosures, filed with the Financial Supervisory Service (Korea). View the original DART filings for Yubion. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.