Who has been buying Proteina stock?

2 distinct insiders have filed 0 disclosed insider purchases in Proteina (468530), most recently on 2026-04-27. 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 Proteina have?

Proteina has 0 buy-side and 4 sell-side disclosures on record, covering ₩2.3B ($1.6M) in total reported value, spanning 2025-07-29 to 2026-04-27.

Where does StockDrifts get Proteina 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.

Proteina 468530

Company

프로티나Proteina

Insiders

Buys

Total Value

₩2.3B ($1.6M)

Avg Return

-162.91%

Last Filing

2026-04-27

Proteina (468530) has 0 disclosed insider purchases and 4 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩2.3B ($1.6M) in reported transaction value. The earliest filing StockDrifts holds for Proteina is dated 2025-07-29; the most recent is 2026-04-27. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea).

Price & insider activity (12 months)

Recent insider trades

Date	Type	Source	Insider	Position	Shares	Price at filing	Return	Value
2026-04-27	BUY	PROGRAM	이홍원 Hongwon Lee	Managing Director	68.0K	₩63,500	-11.2%	₩4.3B ($3.0M)
2026-04-27	BUY	PROGRAM	최병산 Byeongsan Choi	moving	3.3K	₩63,500	-11.2%	₩212M ($147K)
2026-04-27	BUY	PROGRAM	안정현 An Jeong-hyeon	moving	3.0K	₩63,500	-11.2%	₩191M ($132K)
2026-04-27	BUY	PROGRAM	Park Kyung Chan	moving	350	₩63,500	-11.2%	₩22M ($15K)
2026-04-27	BUY	PROGRAM	Park Kyung Chan	moving	3.2K	₩63,500	-11.2%	₩201M ($140K)
2026-04-27	BUY	PROGRAM	정소이 Jeong So-i	moving	719	₩63,500	-11.2%	₩46M ($32K)
2026-04-27	BUY	PROGRAM	류지영 Jiyoung Ryu	moving	1.8K	₩63,500	-11.2%	₩114M ($79K)
2026-04-27	BUY	PROGRAM	이대승 Daeseung Lee	Managing Director	200	₩63,500	-11.2%	₩13M ($9K)
2026-04-27	BUY	PROGRAM	이대승 Daeseung Lee	Managing Director	3.2K	₩63,500	-11.2%	₩201M ($140K)
2026-04-27	BUY	PROGRAM	김재영 Jaeyoung Kim	moving	3.4K	₩63,500	-11.2%	₩216M ($150K)
2025-12-29	SELL	Market Sell	정소이 Jeong So-i	moving	-3.0K	₩111,800	+32.6%	₩335M ($233K)
2025-11-20	BUY	PROGRAM	안정현 An Jeong-hyeon	moving	3.4K	₩67,600	+11.4%	₩229M ($159K)
2025-11-20	BUY	PROGRAM	이대승 Daeseung Lee	Managing Director	3.3K	₩67,600	+11.4%	₩224M ($156K)
2025-11-20	BUY	PROGRAM	이홍원 Hongwon Lee	Managing Director	3.1K	₩67,600	+11.4%	₩212M ($147K)
2025-11-20	BUY	PROGRAM	최병산 Byeongsan Choi	moving	3.1K	₩67,600	+11.4%	₩212M ($147K)
2025-11-20	BUY	PROGRAM	류지영 Jiyoung Ryu	moving	3.3K	₩67,600	+11.4%	₩224M ($156K)
2025-11-20	BUY	PROGRAM	김재영 Jaeyoung Kim	moving	3.4K	₩67,600	+11.4%	₩229M ($159K)
2025-11-20	BUY	PROGRAM	정소이 Jeong So-i	moving	2.0K	₩67,600	+11.4%	₩135M ($94K)
2025-11-20	BUY	PROGRAM	Park Kyung Chan	moving	3.3K	₩67,600	+11.4%	₩224M ($156K)
2025-11-10	SELL	Market Sell	정소이 Jeong So-i	moving	-2.0K	₩65,400	-15.1%	₩131M ($91K)
2025-08-12	BUY	주식매수선택권	정소이 Jeong So-i	moving	5.3K	₩19,730	+281.6%	₩104M ($72K)
2025-08-04	SELL	Market Sell	LB인베스트먼트 LB Investment	-	-50.0K	₩17,110	-340.1%	₩856M ($594K)
2025-08-01	BUY	신규상장	윤소영 Soyoung Yoon	moving	76.0K	₩13,800	+445.6%	₩1.0B ($728K)
2025-07-29	BUY	신규상장	이대승 Daeseung Lee	Managing Director	73.2K	₩17,550	+329.1%	₩1.3B ($893K)
2025-07-29	SELL	Market Sell	LB인베스트먼트 LB Investment	-	-57.0K	₩17,550	-329.1%	₩1.0B ($695K)
2025-07-29	BUY	신규상장	황성택 Seongtaek Hwang	moving	14.8K	₩17,550	+329.1%	₩259M ($180K)
2025-07-29	BUY	신규상장	이홍원 Hongwon Lee	Managing Director	190.0K	₩17,550	+329.1%	₩3.3B ($2.3M)
2025-07-29	BUY	신규상장	LB인베스트먼트 LB Investment	-	1.1M	₩17,550	+329.1%	₩19.5B ($13.6M)
2025-07-29	BUY	신규상장	윤태영 Taeyoung Yoon	CEO	2.0M	₩17,550	+329.1%	₩34.4B ($23.9M)

Frequently asked questions

Who has been buying Proteina stock?: 2 distinct insiders have filed 0 disclosed insider purchases in Proteina (468530), most recently on 2026-04-27. 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 Proteina have?: Proteina has 0 buy-side and 4 sell-side disclosures on record, covering ₩2.3B ($1.6M) in total reported value, spanning 2025-07-29 to 2026-04-27.
Where does StockDrifts get Proteina 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 Proteina. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.