Who has been buying Cellomax Science stock?

1 distinct insiders have filed 9 disclosed insider purchases in Cellomax Science (471820), most recently on 2026-04-01. 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 Cellomax Science have?

Cellomax Science has 9 buy-side and 0 sell-side disclosures on record, covering ₩288M ($200K) in total reported value, spanning 2024-12-13 to 2026-04-01.

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.

Cellomax Science 471820

Company

셀로맥스사이언스Cellomax Science

Insiders

Buys

Total Value

₩288M ($200K)

Avg Return

+12.60%

Last Filing

2026-04-01

Cellomax Science (471820) has 9 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩288M ($200K) in reported transaction value. The earliest filing StockDrifts holds for Cellomax Science is dated 2024-12-13; the most recent is 2026-04-01. Across these filings the average return since disclosure is +12.60%, 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
2026-04-01	BUY	자사주상여금	서지혜 Jihye Seo	moving	5.0K	₩4,950	+7.5%	₩25M ($17K)
2026-04-01	BUY	자사주상여금	양인규 Yang In-gyu	Managing Director	10.2K	₩4,950	+7.5%	₩50M ($35K)
2026-04-01	BUY	자사주상여금	서지완 Seo Ji-wan	Managing Director	2.0K	₩4,950	+7.5%	₩10M ($7K)
2026-01-21	BUY	Market Buy	김성락 Seongrak Kim	president	10.0K	₩4,830	+12.2%	₩48M ($34K)
2026-01-01	BUY	신규선임	서지혜 Jihye Seo	moving	611.5K	₩6,970	-22.2%	₩4.3B ($3.0M)
2025-07-15	BUY	Market Buy	김성락 Seongrak Kim	president	9.8K	₩5,380	+0.7%	₩53M ($37K)
2025-07-14	BUY	Market Buy	김성락 Seongrak Kim	president	202	₩5,510	-1.6%	₩1M ($773)
2025-07-04	BUY	Market Buy	김성락 Seongrak Kim	president	10.0K	₩4,735	+14.5%	₩47M ($33K)
2025-04-11	BUY	Market Buy	김성락 Seongrak Kim	president	1.9K	₩4,600	+17.8%	₩9M ($6K)
2025-04-10	BUY	Market Buy	김성락 Seongrak Kim	president	497	₩4,670	+16.1%	₩2M ($2K)
2025-04-09	BUY	Market Buy	김성락 Seongrak Kim	president	7.6K	₩4,665	+16.2%	₩35M ($25K)
2025-04-02	BUY	Market Buy	김성락 Seongrak Kim	president	4.2K	₩4,500	+20.4%	₩19M ($13K)
2025-04-01	BUY	Market Buy	김성락 Seongrak Kim	president	15.8K	₩4,630	+17.1%	₩73M ($51K)
2025-04-01	BUY	자사주상여금	양인규 Yang In-gyu	Managing Director	10.2K	₩4,630	+17.1%	₩47M ($33K)
2025-04-01	BUY	자사주상여금	서지완 Seo Ji-wan	Managing Director	2.0K	₩4,630	+17.1%	₩9M ($7K)
2024-12-13	BUY	신규상장	서정민 Seo Jeong-min	CEO	4.1M	₩7,960	-31.9%	₩32.7B ($22.7M)
2024-12-13	BUY	신규상장	문민선 Moon Min-seon	-	2.8M	₩7,960	-31.9%	₩22.0B ($15.3M)
2024-12-13	BUY	신규상장	김성락 Seongrak Kim	president	100.0K	₩7,960	-31.9%	₩796M ($553K)

Frequently asked questions

Who has been buying Cellomax Science stock?: 1 distinct insiders have filed 9 disclosed insider purchases in Cellomax Science (471820), most recently on 2026-04-01. 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 Cellomax Science have?: Cellomax Science has 9 buy-side and 0 sell-side disclosures on record, covering ₩288M ($200K) in total reported value, spanning 2024-12-13 to 2026-04-01.
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.