Who has been buying Umji House stock?

2 distinct insiders have filed 18 disclosed insider purchases in Umji House (224810), most recently on 2026-06-24. 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 Umji House have?

Umji House has 18 buy-side and 2 sell-side disclosures on record, covering ₩255M ($177K) in total reported value, spanning 2023-11-16 to 2026-06-24.

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.

Umji House 224810

Company

엄지하우스Umji House

Insiders

Buys

Total Value

₩255M ($177K)

Avg Return

-7.30%

Last Filing

2026-06-24

Umji House (224810) has 18 disclosed insider purchases and 2 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩255M ($177K) in reported transaction value. The earliest filing StockDrifts holds for Umji House is dated 2023-11-16; the most recent is 2026-06-24. Across these filings the average return since disclosure is -7.30%, 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
2026-06-24	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	373	₩995	+22.5%	₩371K ($258)
2026-06-22	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	5.4K	₩1,019	+19.6%	₩6M ($4K)
2026-06-17	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	3.2K	₩952	+28.1%	₩3M ($2K)
2026-05-26	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	3.3K	₩1,580	-0.1%	₩5M ($4K)
2026-04-22	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	500	₩2,480	-11.9%	₩1M ($861)
2026-04-21	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	2.1K	₩2,195	-0.5%	₩5M ($3K)
2026-04-20	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	2.6K	₩2,580	-15.3%	₩7M ($5K)
2025-09-26	SELL	Market Sell	강대규 Kang Dae-gyu	Managing Director	-4.2K	₩2,490	+19.5%	₩10M ($7K)
2025-09-26	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	5.0K	₩2,490	-19.5%	₩12M ($9K)
2025-09-25	SELL	Market Sell	강대규 Kang Dae-gyu	Managing Director	-5.0K	₩2,495	+19.6%	₩12M ($9K)
2025-09-25	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	5.0K	₩2,495	-19.6%	₩12M ($9K)
2025-05-02	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	30.8K	₩2,980	-32.7%	₩92M ($64K)
2024-08-30	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	8.2K	₩2,315	-13.4%	₩19M ($13K)
2024-07-25	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	1.7K	₩2,435	-17.7%	₩4M ($3K)
2024-07-10	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	3.5K	₩2,090	-4.1%	₩7M ($5K)
2024-05-23	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	2.4K	₩2,495	-19.6%	₩6M ($4K)
2024-04-22	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	3.1K	₩2,360	-15.0%	₩7M ($5K)
2024-04-18	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	4.7K	₩2,105	-4.8%	₩10M ($7K)
2024-04-17	BUY	시간외매매	정석환 Seokhwan Jeong	CEO	31.5K	₩2,475	-19.0%	₩78M ($54K)
2023-11-17	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	8.9K	₩3,395	-40.9%	₩30M ($21K)
2023-11-16	BUY	Market Buy	정석환 Seokhwan Jeong	CEO	1.5K	₩3,350	-40.1%	₩5M ($3K)

Frequently asked questions

Who has been buying Umji House stock?: 2 distinct insiders have filed 18 disclosed insider purchases in Umji House (224810), most recently on 2026-06-24. 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 Umji House have?: Umji House has 18 buy-side and 2 sell-side disclosures on record, covering ₩255M ($177K) in total reported value, spanning 2023-11-16 to 2026-06-24.
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.