Who has been buying Atech stock?

4 distinct insiders have filed 36 disclosed insider purchases in Atech (045660), 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 Atech have?

Atech has 36 buy-side and 7 sell-side disclosures on record, covering ₩3.9B ($2.7M) in total reported value, spanning 2024-08-31 to 2026-06-26.

Where does StockDrifts get Atech 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.

Atech 045660

Company

에이텍Atech

Insiders

Buys

Total Value

₩3.9B ($2.7M)

Avg Return

+21.07%

Last Filing

2026-06-26

Atech (045660) has 36 disclosed insider purchases and 7 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩3.9B ($2.7M) in reported transaction value. The earliest filing StockDrifts holds for Atech is dated 2024-08-31; the most recent is 2026-06-26. All of it is parsed from DART D001/D002 insider disclosures, the official disclosure system operated by the Financial Supervisory Service (Korea). Across these filings the average return since disclosure is +21.07%, 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
2026-08-03	BUY	Market Buy	신승영 Seungyoung Shin	CEO	2.1K	₩8,170	+1.6%	₩17M ($12K)
2026-07-31	BUY	Market Buy	신승영 Seungyoung Shin	CEO	47.1K	₩8,380	-0.9%	₩371M ($258K)
2026-07-30	BUY	Market Buy	신승영 Seungyoung Shin	CEO	40.5K	₩8,070	+2.9%	₩321M ($223K)
2026-07-29	BUY	Market Buy	신승영 Seungyoung Shin	CEO	7.5K	₩7,880	+5.3%	₩60M ($42K)
2026-07-28	BUY	Market Buy	신승영 Seungyoung Shin	CEO	4.0K	₩8,000	+3.8%	₩32M ($22K)
2026-07-27	BUY	Market Buy	신승영 Seungyoung Shin	CEO	11.4K	₩8,000	+3.8%	₩90M ($62K)
2026-06-26	BUY	Market Buy	신승영 Seungyoung Shin	CEO	13.0K	₩7,810	+0.0%	₩102M ($71K)
2026-06-22	BUY	Market Buy	신종수 Shin Jong-su	moving	4.0K	₩8,180	-4.5%	₩33M ($23K)
2026-06-19	BUY	Market Buy	신종수 Shin Jong-su	moving	7.0K	₩8,330	-6.2%	₩58M ($40K)
2026-06-18	BUY	Market Buy	신종수 Shin Jong-su	moving	7.3K	₩8,460	-7.7%	₩62M ($43K)
2026-06-17	BUY	Market Buy	신종수 Shin Jong-su	moving	5.1K	₩8,640	-9.6%	₩44M ($31K)
2026-05-18	BUY	Market Buy	신종수 Shin Jong-su	moving	14.3K	-	-	-
2026-05-15	BUY	Market Buy	신종수 Shin Jong-su	moving	7.7K	₩9,130	+0.0%	₩70M ($49K)
2026-05-14	BUY	Market Buy	신종수 Shin Jong-su	moving	21.7K	₩9,200	-0.8%	₩200M ($139K)
2026-05-13	BUY	Market Buy	신종수 Shin Jong-su	moving	7.3K	₩9,220	-1.0%	₩68M ($47K)
2026-05-12	BUY	Market Buy	신종수 Shin Jong-su	moving	2.0K	₩9,180	-0.5%	₩18M ($13K)
2026-05-08	BUY	Market Buy	신종수 Shin Jong-su	moving	3.0K	-	-	-
2026-05-06	BUY	Market Buy	신종수 Shin Jong-su	moving	646	-	-	-
2026-05-04	BUY	Market Buy	신종수 Shin Jong-su	moving	1.2K	-	-	-
2026-04-30	BUY	Market Buy	신종수 Shin Jong-su	moving	6.4K	-	-	-
2026-04-13	BUY	Market Buy	신종수 Shin Jong-su	moving	3.3K	₩9,690	+9.3%	₩32M ($22K)
2026-04-10	BUY	Market Buy	신종수 Shin Jong-su	moving	800	₩9,590	+10.4%	₩8M ($5K)
2026-04-09	BUY	Market Buy	신종수 Shin Jong-su	moving	1.6K	₩9,520	+11.2%	₩16M ($11K)
2026-04-07	BUY	Market Buy	신종수 Shin Jong-su	moving	3.0K	₩9,190	+15.2%	₩27M ($19K)
2026-04-06	BUY	Market Buy	신종수 Shin Jong-su	moving	1.9K	₩9,360	+13.1%	₩18M ($12K)
2026-04-02	BUY	Market Buy	신종수 Shin Jong-su	moving	3.7K	₩9,250	+14.5%	₩34M ($24K)
2026-04-02	BUY	Market Buy	신승영 Seungyoung Shin	CEO	5.7K	₩9,250	+14.5%	₩52M ($36K)
2026-04-01	BUY	Market Buy	신종수 Shin Jong-su	moving	1.3K	₩9,510	+11.4%	₩13M ($9K)
2026-03-31	BUY	Market Buy	신종수 Shin Jong-su	moving	922	₩9,120	+16.1%	₩8M ($6K)
2026-03-30	BUY	Market Buy	신종수 Shin Jong-su	moving	1.8K	₩9,370	+13.0%	₩17M ($12K)
2026-03-27	BUY	신규선임	권오용 Kwon Oh-yong	thanks	2.0K	₩9,500	+11.5%	₩19M ($13K)
2026-03-23	BUY	Market Buy	신종수 Shin Jong-su	moving	274	-	-	-
2026-03-19	BUY	Market Buy	신종수 Shin Jong-su	moving	180	-	-	-
2026-03-17	BUY	Market Buy	신종수 Shin Jong-su	moving	4.3K	-	-	-
2026-03-16	BUY	Market Buy	신종수 Shin Jong-su	moving	2.3K	-	-	-
2026-03-13	BUY	Market Buy	신종수 Shin Jong-su	moving	1.5K	-	-	-
2026-03-10	BUY	Market Buy	신승영 Seungyoung Shin	CEO	43	-	-	-
2026-03-09	BUY	Market Buy	신종수 Shin Jong-su	moving	2.0K	-	-	-
2026-03-04	BUY	Market Buy	신승영 Seungyoung Shin	CEO	50.1K	-	-	-
2026-03-04	BUY	Market Buy	신종수 Shin Jong-su	moving	5.0K	-	-	-
2026-03-03	BUY	Market Buy	신승영 Seungyoung Shin	CEO	2.8K	-	-	-
2026-02-10	BUY	Market Buy	신승영 Seungyoung Shin	CEO	10.0K	₩10,140	+5.9%	₩101M ($70K)
2026-02-04	BUY	Market Buy	신승영 Seungyoung Shin	CEO	1.0K	₩10,130	+6.0%	₩10M ($7K)
2025-02-25	SELL	시간외매매	신승영 Seungyoung Shin	CEO	-200.0K	₩31,150	+65.5%	₩6.2B ($4.3M)
2024-12-17	SELL	Market Sell	신승영 Seungyoung Shin	CEO	-22.5K	₩29,250	+63.3%	₩658M ($457K)
2024-12-17	SELL	Market Sell	전재완 Jeon Jae-wan	moving	-800	₩29,250	+63.3%	₩23M ($16K)
2024-12-13	SELL	Market Sell	최승관 Seungkwan Choi	Management Support Director	-1.4K	₩37,150	+71.1%	₩52M ($36K)
2024-12-13	SELL	Market Sell	전재완 Jeon Jae-wan	moving	-800	₩37,150	+71.1%	₩30M ($21K)
2024-12-13	SELL	Market Sell	신승영 Seungyoung Shin	CEO	-20.0K	₩37,150	+71.1%	₩743M ($516K)
2024-12-12	SELL	Market Sell	신승영 Seungyoung Shin	CEO	-40.0K	₩33,950	+68.4%	₩1.4B ($943K)

Showing the 50 most recent of 53 filings.

Frequently asked questions

Who has been buying Atech stock?: 4 distinct insiders have filed 36 disclosed insider purchases in Atech (045660), 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 Atech have?: Atech has 36 buy-side and 7 sell-side disclosures on record, covering ₩3.9B ($2.7M) in total reported value, spanning 2024-08-31 to 2026-06-26.
Where does StockDrifts get Atech 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 Atech. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.