Who has been buying Sunic System stock?

5 distinct insiders have filed 0 disclosed insider purchases in Sunic System (171090), most recently on 2026-07-06. 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 Sunic System have?

Sunic System has 0 buy-side and 8 sell-side disclosures on record, covering ₩900M ($625K) in total reported value, spanning 2024-03-18 to 2026-07-06.

Where does StockDrifts get Sunic System 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.

Sunic System 171090

Company

선익시스템Sunic System

Insiders

Buys

Total Value

₩900M ($625K)

Avg Return

-139.65%

Last Filing

2026-07-06

Sunic System (171090) has 0 disclosed insider purchases and 8 disclosed disposals on record, filed by 5 distinct insiders. Together those filings cover ₩900M ($625K) in reported transaction value. The earliest filing StockDrifts holds for Sunic System is dated 2024-03-18; the most recent is 2026-07-06. 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
2026-07-06	BUY	주식매수선택권	김혜동 Kim Hye-dong	CEO	25.0K	₩53,800	-4.3%	₩1.3B ($934K)
2026-02-27	SELL	Market Sell	조황신 Jo Hwang-shin	Managing Director	-1.5K	-	-	-
2026-02-23	SELL	Market Sell	강재규 Kang Jae-gyu	Managing Director	-1.0K	₩119,300	-8.8%	₩119M ($83K)
2026-02-13	SELL	Market Sell	김종진 Jongjin Kim	Managing Director	-270	₩100,000	-29.8%	₩27M ($19K)
2026-01-01	BUY	신규선임	장윤호 Yunho Jang	Managing Director	388	₩53,000	+144.9%	₩21M ($14K)
2025-09-26	SELL	Market Sell	남원규 Nam Won-gyu	Managing Director	-3.7K	₩43,600	-197.7%	₩161M ($112K)
2025-07-08	BUY	주식매수청구권 행사	조황신 Jo Hwang-shin	Managing Director	1.5K	₩35,000	+270.9%	₩52M ($36K)
2025-07-08	BUY	주식매수청구권 행사	김혜동 Kim Hye-dong	CEO	20.0K	₩35,000	+270.9%	₩700M ($486K)
2024-08-02	SELL	Market Sell	김종진 Jongjin Kim	Managing Director	-100	₩40,550	-220.1%	₩4M ($3K)
2024-08-01	BUY	PROGRAM	박찬석 Park Chan-seok	Managing Director	1.5K	₩44,500	+191.7%	₩67M ($46K)
2024-08-01	BUY	PROGRAM	김형목 Hyungmok Kim	Managing Director	2.1K	₩44,500	+191.7%	₩93M ($65K)
2024-08-01	BUY	PROGRAM	김종진 Jongjin Kim	Managing Director	3.7K	₩44,500	+191.7%	₩163M ($113K)
2024-08-01	BUY	PROGRAM	김성규 Seonggyu Kim	Managing Director	2.6K	₩44,500	+191.7%	₩116M ($80K)
2024-08-01	BUY	PROGRAM	김준승 Junseung Kim	Managing Director	1.0K	₩44,500	+191.7%	₩45M ($31K)
2024-08-01	BUY	PROGRAM	강재규 Kang Jae-gyu	Managing Director	4.0K	₩44,500	+191.7%	₩178M ($124K)
2024-08-01	BUY	PROGRAM	남원규 Nam Won-gyu	Managing Director	7.7K	₩44,500	+191.7%	₩342M ($238K)
2024-08-01	BUY	PROGRAM	김윤호 Yunho Kim	Managing Director	500	₩44,500	+191.7%	₩22M ($15K)
2024-08-01	BUY	PROGRAM	이주환 Joohwan Lee	Managing Director	3.5K	₩44,500	+191.7%	₩156M ($108K)
2024-04-30	SELL	Market Sell	조황신 Jo Hwang-shin	Managing Director	-4.0K	₩61,400	-111.4%	₩246M ($171K)
2024-04-16	SELL	Market Sell	조황신 Jo Hwang-shin	Managing Director	-5.0K	₩42,500	-205.4%	₩213M ($148K)
2024-03-20	BUY	주식매수선택권	민천규 Min Cheon-gyu	Managing Director	10.3K	₩39,300	+230.3%	₩407M ($282K)
2024-03-20	BUY	주식매수선택권	정승우 Seungwoo Jeong	vice president	18.0K	₩39,300	+230.3%	₩707M ($491K)
2024-03-20	BUY	주식매수선택권	조황신 Jo Hwang-shin	Managing Director	9.0K	₩39,300	+230.3%	₩354M ($246K)
2024-03-18	SELL	Market Sell	민천규 Min Cheon-gyu	Managing Director	-3.0K	₩42,650	-204.3%	₩130M ($90K)

Frequently asked questions

Who has been buying Sunic System stock?: 5 distinct insiders have filed 0 disclosed insider purchases in Sunic System (171090), most recently on 2026-07-06. 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 Sunic System have?: Sunic System has 0 buy-side and 8 sell-side disclosures on record, covering ₩900M ($625K) in total reported value, spanning 2024-03-18 to 2026-07-06.
Where does StockDrifts get Sunic System 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 Sunic System. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.