Who has been buying flask stock?

1 distinct insiders have filed 2 disclosed insider purchases in flask (041590), most recently on 2026-04-07. 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 flask have?

flask has 2 buy-side and 0 sell-side disclosures on record, covering ₩1.4B ($979K) in total reported value, spanning 2024-02-14 to 2026-04-07.

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.

flask 041590

Company

플래스크flask

Insiders

Buys

Total Value

₩1.4B ($979K)

Avg Return

+2.18%

Last Filing

2026-04-07

flask (041590) has 2 disclosed insider purchases and 0 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩1.4B ($979K) in reported transaction value. The earliest filing StockDrifts holds for flask is dated 2024-02-14; the most recent is 2026-04-07. Across these filings the average return since disclosure is +2.18%, 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
2026-04-07	BUY	신규선임	조이선 Joy Seon	thanks	123.3K	₩2,370	+0.0%	₩292M ($203K)
2026-03-31	BUY	신규선임	장성환 Seonghwan Jang	Internal director	431.5K	₩2,370	+0.0%	₩1.0B ($710K)
2025-05-01	BUY	신규선임	이관희 Kwanhee Lee	Managing Director	6.2K	₩2,370	+0.0%	₩15M ($10K)
2025-04-30	SELL	주식병합	노정현 Noh Jeong-hyeon	Other non-executive directors	-76.7K	₩2,370	+0.0%	₩182M ($126K)
2025-04-30	SELL	주식병합	비엔엠홀딩스 BNM Holdings	-	-26.9M	₩2,370	+0.0%	₩63.7B ($44.2M)
2025-04-30	SELL	자본감소	젬백스 Gemvax	-	-13.4M	₩2,370	+0.0%	₩31.7B ($22.0M)
2025-03-04	SELL	전환권등소멸	이병재 Lee Byung-jae	CEO	-1.2M	₩2,370	+0.0%	₩2.8B ($2.0M)
2024-12-21	BUY	제3자배정유상증자	비엔엠홀딩스 BNM Holdings	-	15.2M	₩2,370	+0.0%	₩36.0B ($25.0M)
2024-07-18	BUY	신규선임	노정현 Noh Jeong-hyeon	Other non-executive directors	115.0K	₩2,370	+0.0%	₩273M ($189K)
2024-03-29	SELL	특별관계해소	임신영 Lim Lim Young-young	business manager	-617.4K	₩2,370	+0.0%	₩1.5B ($1.0M)
2024-03-26	BUY	Market Buy	임신영 Lim Lim Young-young	business manager	475.1K	₩2,252	+5.2%	₩1.1B ($743K)
2024-03-25	BUY	Market Buy	임신영 Lim Lim Young-young	business manager	142.3K	₩2,391	-0.9%	₩340M ($236K)
2024-02-14	SELL	기타	박성진 Seongjin Park	Internal director	-1.6M	₩2,327	-1.9%	₩3.7B ($2.6M)

Frequently asked questions

Who has been buying flask stock?: 1 distinct insiders have filed 2 disclosed insider purchases in flask (041590), most recently on 2026-04-07. 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 flask have?: flask has 2 buy-side and 0 sell-side disclosures on record, covering ₩1.4B ($979K) in total reported value, spanning 2024-02-14 to 2026-04-07.
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.