Who has been buying 3A Logics stock?

2 distinct insiders have filed 1 disclosed insider purchases in 3A Logics (177900), most recently on 2026-06-01. 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 3A Logics have?

3A Logics has 1 buy-side and 3 sell-side disclosures on record, covering ₩1.0B ($712K) in total reported value, spanning 2024-12-24 to 2026-06-01.

Where does StockDrifts get 3A Logics 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.

3A Logics 177900

Company

쓰리에이로직스3A Logics

Insiders

Buys

Total Value

₩1.0B ($712K)

Avg Return

+8.26%

Last Filing

2026-06-01

3A Logics (177900) has 1 disclosed insider purchases and 3 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩1.0B ($712K) in reported transaction value. The earliest filing StockDrifts holds for 3A Logics is dated 2024-12-24; the most recent is 2026-06-01. 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 +8.26%, 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
2026-06-01	BUY	Market Buy	강우철 Kang Woo-cheol	vice president	8.7K	₩5,950	-5.9%	₩52M ($36K)
2026-03-26	BUY	주식매수선택권	채석병 quarry	Managing Director	6.4K	₩6,080	-7.9%	₩39M ($27K)
2026-03-26	BUY	주식매수선택권	유신선 Yu Shin-seon	Managing Director	6.4K	₩6,080	-7.9%	₩39M ($27K)
2026-03-26	BUY	주식매수선택권	김성완 Seongwan Kim	vice president	6.4K	₩6,080	-7.9%	₩39M ($27K)
2026-03-26	BUY	주식매수선택권	강우철 Kang Woo-cheol	vice president	3.2K	₩6,080	-7.9%	₩19M ($14K)
2025-03-26	SELL	주식매수청구권 행사	천성훈 Seonghun Cheon	vice president	-16.0K	₩9,880	+34.2%	₩158M ($110K)
2025-03-26	SELL	주식매수청구권 행사	유신선 Yu Shin-seon	moving	-8.0K	₩9,880	+34.2%	₩79M ($55K)
2025-03-26	SELL	주식매수청구권 행사	강우철 Kang Woo-cheol	Managing Director	-6.4K	₩9,880	+34.2%	₩63M ($44K)
2025-03-26	BUY	PROGRAM	강준구 Kang Jun-gu	Managing Director	22.4K	₩9,880	-34.2%	₩221M ($154K)
2025-03-26	SELL	주식매수청구권 행사	김성완 Seongwan Kim	Managing Director	-16.0K	₩9,880	+34.2%	₩158M ($110K)
2025-03-26	SELL	주식매수청구권 행사	강준구 Kang Jun-gu	Managing Director	-22.4K	₩9,880	+34.2%	₩221M ($154K)
2025-03-26	SELL	주식매수청구권 행사	채석병 quarry	Managing Director	-16.0K	₩9,880	+34.2%	₩158M ($110K)
2025-03-26	SELL	주식매수청구권 행사	류창호 Ryu Chang-ho	Managing Director	-19.2K	₩9,880	+34.2%	₩190M ($132K)
2025-03-26	BUY	PROGRAM	채석병 quarry	Managing Director	16.0K	₩9,880	-34.2%	₩158M ($110K)
2025-03-26	BUY	PROGRAM	김성완 Seongwan Kim	Managing Director	16.0K	₩9,880	-34.2%	₩158M ($110K)
2025-03-26	BUY	PROGRAM	강우철 Kang Woo-cheol	Managing Director	6.4K	₩9,880	-34.2%	₩63M ($44K)
2025-03-26	BUY	PROGRAM	유신선 Yu Shin-seon	moving	8.0K	₩9,880	-34.2%	₩79M ($55K)
2025-03-26	BUY	PROGRAM	천성훈 Seonghun Cheon	vice president	16.0K	₩9,880	-34.2%	₩158M ($110K)
2025-03-26	BUY	PROGRAM	류창호 Ryu Chang-ho	Managing Director	19.2K	₩9,880	-34.2%	₩190M ($132K)
2025-01-06	SELL	Market Sell	한국산업은행 Korea Development Bank	-	-30.1K	₩7,570	+14.1%	₩228M ($158K)
2025-01-03	SELL	Market Sell	한국산업은행 Korea Development Bank	-	-50.0K	₩7,400	+12.2%	₩370M ($257K)
2025-01-02	SELL	Market Sell	한국산업은행 Korea Development Bank	-	-50.6K	₩7,440	+12.6%	₩376M ($261K)
2024-12-24	BUY	PROGRAM	채석병 quarry	Managing Director	22.4K	₩9,130	-28.8%	₩205M ($142K)
2024-12-24	BUY	PROGRAM	김성완 Seongwan Kim	Managing Director	64.0K	₩9,130	-28.8%	₩584M ($406K)
2024-12-24	BUY	PROGRAM	김성완 Seongwan Kim	Managing Director	34.4K	₩9,130	-28.8%	₩314M ($218K)
2024-12-24	BUY	PROGRAM	박광범 Gwangbeom Park	CEO	1.4M	₩9,130	-28.8%	₩12.4B ($8.6M)
2024-12-24	BUY	PROGRAM	류창호 Ryu Chang-ho	Managing Director	69.7K	₩9,130	-28.8%	₩636M ($442K)
2024-12-24	BUY	PROGRAM	류창호 Ryu Chang-ho	Managing Director	19.2K	₩9,130	-28.8%	₩175M ($122K)
2024-12-24	BUY	PROGRAM	채석병 quarry	Managing Director	27.2K	₩9,130	-28.8%	₩248M ($172K)
2024-12-24	BUY	PROGRAM	이평한 Lee Pyeong-han	CEO	1.2M	₩9,130	-28.8%	₩10.5B ($7.3M)
2024-12-24	BUY	신규상장	한국산업은행 Korea Development Bank	-	1.0M	₩9,130	-28.8%	₩9.3B ($6.5M)
2024-12-24	BUY	PROGRAM	천성훈 Seonghun Cheon	vice president	19.2K	₩9,130	-28.8%	₩175M ($122K)
2024-12-24	BUY	PROGRAM	천성훈 Seonghun Cheon	vice president	112.0K	₩9,130	-28.8%	₩1.0B ($710K)
2024-12-24	BUY	PROGRAM	강우철 Kang Woo-cheol	Managing Director	29.6K	₩9,130	-28.8%	₩270M ($188K)
2024-12-24	BUY	PROGRAM	강우철 Kang Woo-cheol	Managing Director	56.0K	₩9,130	-28.8%	₩511M ($355K)

Frequently asked questions

Who has been buying 3A Logics stock?: 2 distinct insiders have filed 1 disclosed insider purchases in 3A Logics (177900), most recently on 2026-06-01. 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 3A Logics have?: 3A Logics has 1 buy-side and 3 sell-side disclosures on record, covering ₩1.0B ($712K) in total reported value, spanning 2024-12-24 to 2026-06-01.
Where does StockDrifts get 3A Logics 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 3A Logics. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.