Who has been buying Sangsin IDP stock?

2 distinct insiders have filed 0 disclosed insider purchases in Sangsin IDP (091580), most recently on 2026-05-06. 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 Sangsin IDP have?

Sangsin IDP has 0 buy-side and 5 sell-side disclosures on record, covering ₩344M ($239K) in total reported value, spanning 2024-08-05 to 2026-05-06.

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.

Sangsin IDP 091580

Company

상신이디피Sangsin IDP

Insiders

Buys

Total Value

₩344M ($239K)

Avg Return

+0.35%

Last Filing

2026-05-06

Sangsin IDP (091580) has 0 disclosed insider purchases and 5 disclosed disposals on record, filed by 2 distinct insiders. Together those filings cover ₩344M ($239K) in reported transaction value. The earliest filing StockDrifts holds for Sangsin IDP is dated 2024-08-05; the most recent is 2026-05-06. Across these filings the average return since disclosure is +0.35%, 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
2026-05-06	SELL	Market Sell	이장원 Lee Jang-won	Managing Director	-7.0K	₩27,200	+14.2%	₩190M ($132K)
2026-04-22	SELL	Market Sell	문승욱 Seungwook Moon	thanks	-2.6K	₩29,950	+5.8%	₩78M ($54K)
2026-04-21	SELL	Market Sell	문승욱 Seungwook Moon	thanks	-53	₩29,150	+3.3%	₩2M ($1K)
2026-04-21	SELL	Market Sell	문승욱 Seungwook Moon	thanks	-2.3K	₩29,150	+3.3%	₩67M ($47K)
2026-04-05	SELL	Market Sell	문승욱 Seungwook Moon	thanks	-314	₩22,600	-24.8%	₩7M ($5K)
2025-12-31	SELL	임원퇴임	한광규 Gwanggyu Han	Managing Director	-4.2K	₩11,780	-40.6%	₩50M ($35K)
2025-08-31	SELL	임원퇴임	김성회 Seonghoe Kim	Managing Director	-2.0K	₩9,860	-68.0%	₩20M ($14K)
2025-07-31	SELL	임원퇴임	서수용 Suyong Seo	Managing Director	-60	₩9,080	-82.4%	₩545K ($378)
2025-03-31	BUY	신규선임	문승욱 Seungwook Moon	thanks	6.3K	₩7,410	+123.5%	₩46M ($32K)
2025-02-12	SELL	증여	김일부 Ilbu Kim	CEO	-1.0M	₩7,080	-133.9%	₩7.1B ($4.9M)
2025-02-12	BUY	수증	김민철 Mincheol Kim	Managing Director	1.0M	₩7,080	+133.9%	₩7.1B ($4.9M)
2024-08-05	BUY	신규선임	박경철 Park Kyung-cheol	moving	675	₩10,760	+53.9%	₩7M ($5K)

Frequently asked questions

Who has been buying Sangsin IDP stock?: 2 distinct insiders have filed 0 disclosed insider purchases in Sangsin IDP (091580), most recently on 2026-05-06. 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 Sangsin IDP have?: Sangsin IDP has 0 buy-side and 5 sell-side disclosures on record, covering ₩344M ($239K) in total reported value, spanning 2024-08-05 to 2026-05-06.
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.