Who has been buying SIMPAC stock?

2 distinct insiders have filed 23 disclosed insider purchases in SIMPAC (009160), most recently on 2026-06-05. 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 SIMPAC have?

SIMPAC has 23 buy-side and 0 sell-side disclosures on record, covering ₩3.7B ($2.6M) in total reported value, spanning 2018-07-02 to 2026-06-05.

Where does StockDrifts get SIMPAC 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.

SIMPAC 009160

Company

SIMPAC

Insiders

Buys

Total Value

₩3.7B ($2.6M)

Avg Return

-2.48%

Last Filing

2026-06-05

SIMPAC (009160) has 23 disclosed insider purchases and 0 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩3.7B ($2.6M) in reported transaction value. The earliest filing StockDrifts holds for SIMPAC is dated 2018-07-02; the most recent is 2026-06-05. 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 -2.48%, 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
2026-06-05	BUY	Market Buy	최민찬 Minchan Choi	vice president	3.3K	₩4,735	+0.0%	₩16M ($11K)
2026-06-02	BUY	Market Buy	최민찬 Minchan Choi	vice president	6.0K	₩4,890	-3.2%	₩29M ($20K)
2026-06-01	BUY	Market Buy	최민찬 Minchan Choi	vice president	7.2K	₩4,770	+2.5%	₩34M ($24K)
2026-05-29	BUY	Market Buy	최민영 Minyoung Choi	Managing Director	37.2K	₩4,940	-1.0%	₩184M ($128K)
2026-05-29	BUY	Market Buy	최민찬 Minchan Choi	vice president	3.0K	₩4,940	-1.0%	₩15M ($10K)
2026-05-28	BUY	Market Buy	최민영 Minyoung Choi	Managing Director	35.9K	₩5,120	-4.5%	₩184M ($128K)
2026-05-27	BUY	Market Buy	최민영 Minyoung Choi	Managing Director	15.9K	₩5,280	-7.4%	₩84M ($58K)
2026-05-26	BUY	Market Buy	최민찬 Minchan Choi	vice president	25.4K	₩5,700	-10.2%	₩145M ($100K)
2026-05-22	BUY	Market Buy	최민찬 Minchan Choi	vice president	2.0K	₩5,480	-6.6%	₩11M ($8K)
2026-05-15	BUY	Market Buy	최민찬 Minchan Choi	vice president	15.0K	₩6,510	-21.4%	₩98M ($68K)
2026-05-14	BUY	Market Buy	최민찬 Minchan Choi	vice president	15.7K	₩6,500	-15.7%	₩102M ($71K)
2026-05-13	BUY	Market Buy	최민영 Minyoung Choi	Managing Director	32.8K	₩6,440	+1.1%	₩211M ($147K)
2026-05-13	BUY	Market Buy	최민찬 Minchan Choi	vice president	34.4K	₩6,440	-14.9%	₩222M ($154K)
2026-05-12	BUY	Market Buy	최민영 Minyoung Choi	Managing Director	45.1K	₩6,380	+2.0%	₩288M ($200K)
2026-05-11	BUY	Market Buy	최민찬 Minchan Choi	vice president	16.9K	₩6,680	-2.5%	₩113M ($79K)
2026-04-01	BUY	Market Buy	최민찬 Minchan Choi	vice president	63.4K	₩5,290	+5.1%	₩335M ($233K)
2026-03-31	BUY	Market Buy	최민찬 Minchan Choi	vice president	50.6K	₩4,965	+12.0%	₩251M ($175K)
2026-03-30	BUY	Market Buy	최민찬 Minchan Choi	vice president	80.6K	₩5,150	+8.0%	₩415M ($288K)
2026-03-29	SELL	임원퇴임	심웅섭 Shim Woongseop	CEO	-10.0K	₩5,150	-8.0%	₩52M ($36K)
2026-03-26	BUY	Market Buy	최민찬 Minchan Choi	vice president	18.0K	₩4,905	+1.6%	₩88M ($61K)
2026-01-06	BUY	PROGRAM	최민영 Minyoung Choi	Managing Director	10.0K	₩4,885	+7.3%	₩49M ($34K)
2025-12-30	BUY	PROGRAM	남진환 Jinhwan Nam	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	심웅섭 Shim Woongseop	CEO	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김종호 Kim Jong-ho	president	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	정연중 Yeonjung Jeong	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	손태원 Taewon Son	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김현철 Hyuncheol Kim	Assistant Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	박승배 Seungbae Park	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	송효석 Song Hyo-seok	CEO	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	이종서 Jong-seo Lee	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김승현 Seunghyeon Kim	Assistant Managing Director	500	₩5,100	+2.8%	₩3M ($2K)
2025-12-30	BUY	PROGRAM	김승현 Seunghyeon Kim	Assistant Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김태훈 Taehoon Kim	moving	2.3K	₩5,100	+2.8%	₩12M ($8K)
2025-12-30	BUY	PROGRAM	김태훈 Taehoon Kim	moving	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	박철우 Park Cheol-woo	moving	23.4K	₩5,100	+2.8%	₩119M ($83K)
2025-12-30	BUY	PROGRAM	박철우 Park Cheol-woo	moving	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김용환 Yonghwan Kim	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김진호 Jinho Kim	Managing Director	590	₩5,100	+2.8%	₩3M ($2K)
2025-12-30	BUY	PROGRAM	김진호 Jinho Kim	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	황병명 Byeongmyeong Hwang	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	김대우 Daewoo Kim	Managing Director	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-30	BUY	PROGRAM	최민찬 Minchan Choi	vice president	10.0K	₩5,100	+2.8%	₩51M ($35K)
2025-12-17	BUY	Market Buy	최민찬 Minchan Choi	vice president	1.0K	-	-	-
2025-12-16	BUY	Market Buy	최민찬 Minchan Choi	vice president	63.2K	₩5,470	-4.2%	₩346M ($240K)
2025-12-15	BUY	합병	최진식 Jinsik Choi	CEO Chairman	11.5M	₩5,600	-6.4%	₩64.5B ($44.8M)
2025-12-15	BUY	합병	최민영 Minyoung Choi	Managing Director	5.6M	₩5,600	-6.4%	₩31.6B ($21.9M)
2025-12-15	BUY	합병	최민찬 Minchan Choi	vice president	13.5M	₩5,600	-6.4%	₩75.8B ($52.6M)
2025-12-12	BUY	Market Buy	최민찬 Minchan Choi	vice president	76.9K	₩5,160	+1.6%	₩397M ($276K)
2025-12-11	BUY	Market Buy	최민찬 Minchan Choi	vice president	29.5K	₩5,030	+4.2%	₩149M ($103K)
2024-07-15	BUY	수증	최민영 Minyoung Choi	Managing Director	200.0K	₩3,780	+38.6%	₩756M ($525K)

Showing the 50 most recent of 53 filings.

Frequently asked questions

Who has been buying SIMPAC stock?: 2 distinct insiders have filed 23 disclosed insider purchases in SIMPAC (009160), most recently on 2026-06-05. 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 SIMPAC have?: SIMPAC has 23 buy-side and 0 sell-side disclosures on record, covering ₩3.7B ($2.6M) in total reported value, spanning 2018-07-02 to 2026-06-05.
Where does StockDrifts get SIMPAC 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 SIMPAC. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.