Who has been buying Cheonbo stock?

2 distinct insiders have filed 1505 disclosed insider purchases in Cheonbo (278280), most recently on 2026-06-26. 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 Cheonbo have?

Cheonbo has 1505 buy-side and 0 sell-side disclosures on record, covering ₩2.6B ($1.8M) in total reported value, spanning 2024-11-20 to 2026-06-26.

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.

Cheonbo 278280

Company

천보Cheonbo

Insiders

Buys

1505

Total Value

₩2.6B ($1.8M)

Avg Return

-7.97%

Last Filing

2026-06-26

Cheonbo (278280) has 1505 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩2.6B ($1.8M) in reported transaction value. The earliest filing StockDrifts holds for Cheonbo is dated 2024-11-20; the most recent is 2026-06-26. Across these filings the average return since disclosure is -7.97%, 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
2026-07-30	BUY	Market Buy	우동희 Woo Dong-hee	Outside Director	110	₩28,250	+10.3%	₩3M ($2K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	10	₩37,800	-1.6%	₩378K ($263)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	85	₩37,800	-1.6%	₩3M ($2K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	25	₩37,800	-1.6%	₩945K ($656)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	109	₩37,800	-1.6%	₩4M ($3K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	6	₩37,800	-1.6%	₩227K ($158)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	5	₩37,800	-1.6%	₩189K ($131)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	26	₩37,800	-1.6%	₩983K ($683)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	61	₩37,800	-1.6%	₩2M ($2K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	20	₩37,800	-1.6%	₩756K ($525)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	111	₩37,800	-1.6%	₩4M ($3K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	12	₩37,800	-1.6%	₩454K ($315)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	20	₩37,800	-1.6%	₩756K ($525)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	32	₩37,800	-1.6%	₩1M ($840)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	18	₩37,800	-1.6%	₩680K ($473)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	150	₩37,800	-1.6%	₩6M ($4K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	268	₩37,800	-1.6%	₩10M ($7K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	34	₩37,800	-1.6%	₩1M ($893)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	3	₩37,800	-1.6%	₩113K ($79)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	12	₩37,800	-1.6%	₩454K ($315)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	22	₩37,800	-1.6%	₩832K ($578)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	15	₩37,800	-1.6%	₩567K ($394)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	40	₩37,800	-1.6%	₩2M ($1K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	75	₩37,800	-1.6%	₩3M ($2K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	19	₩37,800	-1.6%	₩718K ($499)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	5	₩37,800	-1.6%	₩189K ($131)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	3	₩37,800	-1.6%	₩113K ($79)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	12	₩37,800	-1.6%	₩454K ($315)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	31	₩37,800	-1.6%	₩1M ($814)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	8	₩37,800	-1.6%	₩302K ($210)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	20	₩37,800	-1.6%	₩756K ($525)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	100	₩37,800	-1.6%	₩4M ($3K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	40	₩37,800	-1.6%	₩2M ($1K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	3	₩37,800	-1.6%	₩113K ($79)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	542	₩37,800	-1.6%	₩20M ($14K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	2	₩37,800	-1.6%	₩76K ($53)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	27	₩37,800	-1.6%	₩1M ($709)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	8	₩37,800	-1.6%	₩302K ($210)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	39	₩37,800	-1.6%	₩1M ($1K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	100	₩37,800	-1.6%	₩4M ($3K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	46	₩37,800	-1.6%	₩2M ($1K)
2026-06-26	BUY	Market Buy	이상율 Lee Sang-yul	CEO	1	₩37,800	-1.6%	₩38K ($26)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Cheonbo stock?: 2 distinct insiders have filed 1505 disclosed insider purchases in Cheonbo (278280), most recently on 2026-06-26. 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 Cheonbo have?: Cheonbo has 1505 buy-side and 0 sell-side disclosures on record, covering ₩2.6B ($1.8M) in total reported value, spanning 2024-11-20 to 2026-06-26.
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.