Who has been buying Shinsung ST stock?

4 distinct insiders have filed 2 disclosed insider purchases in Shinsung ST (416180), most recently on 2025-11-07. 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 Shinsung ST have?

Shinsung ST has 2 buy-side and 5 sell-side disclosures on record, covering ₩1.0B ($695K) in total reported value, spanning 2024-04-26 to 2025-11-07.

Do insider buys in Korean stocks predict returns?

Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

Shinsung ST 416180

Company

신성에스티Shinsung ST

Insiders

Buys

Total Value

₩1.0B ($695K)

Avg Return

+13.38%

Last Filing

2025-11-07

Shinsung ST (416180) has 2 disclosed insider purchases and 5 disclosed disposals on record, filed by 4 distinct insiders. Together those filings cover ₩1.0B ($695K) in reported transaction value. The earliest filing StockDrifts holds for Shinsung ST is dated 2024-04-26; the most recent is 2025-11-07. Across these filings the average return since disclosure is +13.38%, 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
2025-11-07	SELL	시간외매매	안병두 Byeongdu Ahn	torture	-284.0K	₩40,200	+5.5%	₩11.4B ($7.9M)
2025-10-28	BUY	기타	정종교 Jeong Jong-gyo	Managing Director	2.4K	₩47,300	-19.7%	₩113M ($79K)
2025-10-22	SELL	Market Sell	김찬식 Chansik Kim	Managing Director	-5.3K	₩44,800	+15.2%	₩238M ($165K)
2025-10-21	SELL	Market Sell	김찬식 Chansik Kim	Managing Director	-784	₩43,700	+13.0%	₩34M ($24K)
2025-10-01	SELL	시간외매매	안병두 Byeongdu Ahn	torture	-90.0K	₩33,550	-13.3%	₩3.0B ($2.1M)
2025-08-04	SELL	Market Sell	손태도 Son Tae-do	CEO	-6.0K	₩40,050	+5.1%	₩240M ($167K)
2025-08-01	SELL	Market Sell	손태도 Son Tae-do	CEO	-10.0K	₩39,950	+4.9%	₩400M ($277K)
2025-07-30	SELL	시간외매매	구본상 Koo Bon-sang	Internal director	-90.0K	₩43,300	+12.2%	₩3.9B ($2.7M)
2025-07-18	SELL	Market Sell	정재원 Jaewon Jeong	Managing Director	-1.0K	₩39,850	+4.6%	₩40M ($28K)
2025-07-16	BUY	기타	정재원 Jaewon Jeong	Managing Director	1.0K	₩46,000	-17.4%	₩46M ($32K)
2025-03-25	BUY	신규선임	손태도 Son Tae-do	Each CEO	52.9K	₩31,300	+21.4%	₩1.7B ($1.2M)
2024-10-22	BUY	기타	김찬식 Chansik Kim	Managing Director	6.1K	₩25,600	+48.4%	₩156M ($108K)
2024-05-07	BUY	Market Buy	안병두 Byeongdu Ahn	CEO	1.5K	₩29,450	+29.0%	₩44M ($31K)
2024-04-26	BUY	Market Buy	안병두 Byeongdu Ahn	CEO	128	₩31,200	+21.8%	₩4M ($3K)

Frequently asked questions

Who has been buying Shinsung ST stock?: 4 distinct insiders have filed 2 disclosed insider purchases in Shinsung ST (416180), most recently on 2025-11-07. 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 Shinsung ST have?: Shinsung ST has 2 buy-side and 5 sell-side disclosures on record, covering ₩1.0B ($695K) in total reported value, spanning 2024-04-26 to 2025-11-07.
Do insider buys in Korean stocks predict returns?: Not uniformly. StockDrifts analysed 170,720 share-count changes across 56,930 Korean regulatory filings using cross-sectional alpha at fixed forward horizons, and found returns concentrated in particular signal tiers rather than in insider buying generally.

More on this data

Every trade listed above comes from an official regulatory disclosure. For how StockDrifts scores these disclosures, see the Korea insider signal tier research, or browse every Korean stock we track.