Who has been buying device stock?

0 distinct insiders have filed 0 disclosed insider purchases in device (187870), most recently on 2026-05-22. 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 device have?

device has 0 buy-side and 0 sell-side disclosures on record, spanning 2025-12-26 to 2026-05-22.

Where does StockDrifts get device 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.

device 187870

Company

디바이스device

Insiders

Buys

Total Value

—

Avg Return

—

Last Filing

2026-05-22

device (187870) has 0 disclosed insider purchases and 0 disclosed disposals on record, filed by 0 distinct insiders. The earliest filing StockDrifts holds for device is dated 2025-12-26; the most recent is 2026-05-22. 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
2026-08-04	BUY	PROGRAM	최기룡 Ki-Ryong Choi	Managing Director	10.0K	₩11,230	+4.1%	₩78M ($54K)
2026-08-04	BUY	PROGRAM	고숭호 Go Soong-ho	Managing Director	6.0K	₩11,230	+4.1%	₩47M ($32K)
2026-08-04	BUY	PROGRAM	김주태 Kim Joo-tae	Managing Director	12.0K	₩11,230	+4.1%	₩93M ($65K)
2026-08-04	BUY	PROGRAM	이택엽 Lee Taek-yeop	Managing Director	12.0K	₩11,230	+4.1%	₩93M ($65K)
2026-08-04	BUY	PROGRAM	이성진 Seongjin Lee	Managing Director	12.0K	₩11,230	+4.1%	₩93M ($65K)
2026-08-04	BUY	PROGRAM	이상종 Lee Sang-jong	Managing Director	12.0K	₩11,230	+4.1%	₩93M ($65K)
2026-08-04	BUY	PROGRAM	윤창로 Yoon Chang-ro	Managing Director	16.7K	₩11,230	+4.1%	₩130M ($90K)
2026-08-04	BUY	PROGRAM	방인호 Bang In-ho	CEO	12.0K	₩11,230	+4.1%	₩93M ($65K)
2026-05-22	BUY	PROGRAM	이상종 Lee Sang-jong	Managing Director	2.5K	₩23,800	+4.8%	₩60M ($41K)
2026-05-22	BUY	PROGRAM	고숭호 Go Soong-ho	Managing Director	800	₩23,800	+4.8%	₩19M ($13K)
2026-05-22	BUY	PROGRAM	김주태 Kim Joo-tae	Managing Director	12.5K	₩23,800	+4.8%	₩298M ($207K)
2026-05-22	BUY	PROGRAM	방인호 Bang In-ho	CEO	111.0K	₩23,800	+4.8%	₩2.6B ($1.8M)
2026-05-22	BUY	PROGRAM	윤창로 Yoon Chang-ro	Managing Director	2.5K	₩23,800	+4.8%	₩60M ($41K)
2026-05-22	BUY	PROGRAM	최봉진 Bongjin Choi	CEO	2.1M	₩23,800	+4.8%	₩50.0B ($34.7M)
2026-05-22	BUY	PROGRAM	이성진 Seongjin Lee	Managing Director	2.0K	₩23,800	+4.8%	₩48M ($33K)
2026-05-22	BUY	PROGRAM	이택엽 Lee Taek-yeop	Managing Director	2.0K	₩23,800	+4.8%	₩48M ($33K)
2026-05-22	BUY	PROGRAM	최기룡 Ki-Ryong Choi	Managing Director	2.5K	₩23,800	+4.8%	₩60M ($41K)
2026-04-23	SELL	증여	고숭호 Go Soong-ho	Managing Director	-1.2K	₩16,563	-20.0%	₩20M ($14K)
2025-12-26	BUY	PROGRAM	고숭호 Go Soong-ho	Managing Director	2.0K	₩14,350	+32.1%	₩29M ($20K)
2025-12-26	BUY	PROGRAM	김주태 Kim Joo-tae	Managing Director	2.5K	₩14,350	+32.1%	₩36M ($25K)
2025-12-26	BUY	PROGRAM	방인호 Bang In-ho	CEO	5.0K	₩14,350	+32.1%	₩72M ($50K)
2025-12-26	BUY	PROGRAM	최기룡 Ki-Ryong Choi	Managing Director	2.5K	₩14,350	+32.1%	₩36M ($25K)
2025-12-26	BUY	PROGRAM	이상종 Lee Sang-jong	Managing Director	2.5K	₩14,350	+32.1%	₩36M ($25K)
2025-12-26	BUY	PROGRAM	이성진 Seongjin Lee	Managing Director	2.0K	₩14,350	+32.1%	₩29M ($20K)
2025-12-26	BUY	PROGRAM	이택엽 Lee Taek-yeop	Managing Director	2.0K	₩14,350	+32.1%	₩29M ($20K)
2025-12-26	BUY	PROGRAM	윤창로 Yoon Chang-ro	Managing Director	2.5K	₩14,350	+32.1%	₩36M ($25K)

Frequently asked questions

Who has been buying device stock?: 0 distinct insiders have filed 0 disclosed insider purchases in device (187870), most recently on 2026-05-22. 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 device have?: device has 0 buy-side and 0 sell-side disclosures on record, spanning 2025-12-26 to 2026-05-22.
Where does StockDrifts get device 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 device. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.