Who has been buying HPSP stock?

8 distinct insiders have filed 0 disclosed insider purchases in HPSP (403870), most recently on 2026-05-19. 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 HPSP have?

HPSP has 0 buy-side and 22 sell-side disclosures on record, covering ₩30.4B ($21.1M) in total reported value, spanning 2024-02-15 to 2026-05-19.

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.

HPSP 403870

Company

HPSP

Insiders

Buys

Total Value

₩30.4B ($21.1M)

Avg Return

-17.87%

Last Filing

2026-05-19

HPSP (403870) has 0 disclosed insider purchases and 22 disclosed disposals on record, filed by 8 distinct insiders. Together those filings cover ₩30.4B ($21.1M) in reported transaction value. The earliest filing StockDrifts holds for HPSP is dated 2024-02-15; the most recent is 2026-05-19. Across these filings the average return since disclosure is -17.87%, 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
2026-09-22	BUY	기타	BAEK LAK HO	vice president	1.7K	₩54,100	+2.8%	₩91M ($63K)
2026-09-22	BUY	기타	김근영 Kim Geun-young	Internal director	1.3K	₩54,100	+2.8%	₩67M ($46K)
2026-09-22	BUY	기타	한대희 Daehee Han	vice president	8.4K	₩54,100	+2.8%	₩449M ($312K)
2026-09-22	BUY	주식매수청구권 행사	BAEK LAK HO	vice president	14.2K	₩54,100	+2.8%	₩335M ($233K)
2026-07-30	SELL	임원퇴임	안재범 Jaebeom Ahn	moving	-84.6K	₩28,550	-24.0%	₩2.4B ($1.7M)
2026-05-19	BUY	기타	BAEK LAK HO	vice president	3.3K	₩49,000	+3.9%	₩162M ($112K)
2026-05-19	BUY	주식매수청구권 행사	BAEK LAK HO	vice president	43.5K	₩49,000	+3.9%	₩2.1B ($1.5M)
2026-05-15	SELL	임원퇴임	임도희 Dohee Lim	moving	-1.3K	₩49,500	-2.8%	₩62M ($43K)
2026-04-01	BUY	신규선임	한대희 Daehee Han	vice president	14.1K	₩44,500	+16.7%	₩627M ($436K)
2026-03-26	SELL	임원퇴임	박필재 Park Piljae	Managing Director	-6.0K	₩45,650	+1.1%	₩274M ($190K)
2026-03-06	SELL	임원퇴임	이시형 Lee Si-hyung	Managing Director	-4.6K	-	-	-
2026-03-05	BUY	기타	임도희 Dohee Lim	moving	1.3K	-	-	-
2026-02-26	SELL	시간외매매	히트2025홀딩스 Heat2025 Holdings	-	-7.6M	₩43,300	+0.0%	₩329.1B ($228.5M)
2026-02-11	SELL	Market Sell	CHIU EDDIE KA HO	vice president	-2.0K	₩43,200	-0.2%	₩86M ($60K)
2026-02-10	SELL	Market Sell	CHIU EDDIE KA HO	vice president	-6.0K	₩44,300	+2.3%	₩266M ($185K)
2026-02-02	SELL	Market Sell	강범준 Beomjun Kang	vice president	-51.8K	₩42,650	-1.5%	₩2.2B ($1.5M)
2026-01-09	SELL	시간외매매	히트2025홀딩스 Heat2025 Holdings	-	-8.4M	₩33,100	-30.8%	₩276.7B ($192.2M)
2025-12-30	SELL	Market Sell	강범준 Beomjun Kang	vice president	-4.4K	₩33,500	-29.3%	₩147M ($102K)
2025-12-03	SELL	임원퇴임	조성길 Cho Seong-gil	moving	-50.8K	₩31,000	-39.7%	₩1.6B ($1.1M)
2025-10-13	SELL	Market Sell	박필재 Park Piljae	Managing Director	-4.7K	₩36,850	-17.5%	₩172M ($119K)
2025-10-10	SELL	Market Sell	박필재 Park Piljae	Managing Director	-10.0K	₩36,550	-18.5%	₩366M ($254K)
2025-10-02	SELL	Market Sell	박필재 Park Piljae	Managing Director	-10.0K	₩35,000	-23.7%	₩350M ($243K)
2025-10-02	SELL	Market Sell	이시형 Lee Si-hyung	Managing Director	-2.0K	₩35,000	-23.7%	₩70M ($49K)
2025-09-29	BUY	기타	이시형 Lee Si-hyung	Managing Director	3.3K	₩34,100	+27.0%	₩114M ($79K)
2025-09-29	SELL	Market Sell	조성길 Cho Seong-gil	moving	-10.0K	₩34,100	-27.0%	₩341M ($237K)
2025-09-29	BUY	기타	박필재 Park Piljae	Managing Director	3.3K	₩34,100	+27.0%	₩113M ($78K)
2025-09-29	BUY	주식매수청구권 행사	박필재 Park Piljae	Managing Director	24.1K	₩34,100	+27.0%	₩821M ($570K)
2025-09-29	BUY	기타	안재범 Jaebeom Ahn	moving	2.3K	₩34,100	+27.0%	₩79M ($55K)
2025-09-26	SELL	임원퇴임	김용운 Yongun Kim	president	-241.2K	₩34,000	-27.4%	₩8.2B ($5.7M)
2025-09-26	SELL	Market Sell	김용운 Yongun Kim	president	-47.4K	₩34,000	-27.4%	₩1.6B ($1.1M)
2025-09-25	SELL	Market Sell	김용운 Yongun Kim	president	-40.0K	₩34,350	-26.1%	₩1.4B ($954K)
2025-09-24	SELL	Market Sell	김용운 Yongun Kim	president	-100.0K	₩35,450	-22.1%	₩3.5B ($2.5M)
2025-09-18	BUY	기타	CHIU EDDIE KA HO	Managing Director	1.3K	₩30,600	+41.5%	₩40M ($28K)
2025-07-03	SELL	Market Sell	김용운 Yongun Kim	president	-13.0K	₩27,900	-55.2%	₩363M ($252K)
2025-07-01	SELL	임원퇴임	이동형 mobile	Managing Director	-2.3K	₩27,700	-56.3%	₩64M ($44K)
2025-07-01	SELL	Market Sell	김용운 Yongun Kim	president	-21.0K	₩27,700	-56.3%	₩582M ($404K)
2025-05-12	BUY	기타	히트2025홀딩스 Heat2025 Holdings	-	32.8M	₩23,450	+84.7%	₩769.2B ($534.1M)
2025-04-16	SELL	Market Sell	CHIU EDDIE KA HO	vice president	-120.8K	₩23,700	-82.7%	₩2.9B ($2.0M)
2025-01-24	SELL	Market Sell	이주희 Lee Joo-hee	moving	-19.0K	₩33,050	-31.0%	₩628M ($436K)
2025-01-21	SELL	Market Sell	CHIU EDDIE KA HO	Managing Director	-88.9K	₩32,450	-33.4%	₩2.9B ($2.0M)
2025-01-03	BUY	주식매수선택권	김용운 Yongun Kim	president	194.4K	₩28,050	+54.4%	₩5.5B ($3.8M)
2025-01-03	BUY	주식매수선택권	김용운 Yongun Kim	president	33.0K	₩28,050	+54.4%	₩926M ($643K)
2025-01-03	BUY	주식매수선택권	강범준 Beomjun Kang	vice president	56.2K	₩28,050	+54.4%	₩1.6B ($1.1M)
2024-12-02	BUY	주식매수청구권 행사	이주희 Lee Joo-hee	moving	16.0K	₩25,400	+70.5%	₩406M ($282K)
2024-12-02	BUY	주식매수청구권 행사	조성길 Cho Seong-gil	moving	24.0K	₩25,400	+70.5%	₩610M ($423K)
2024-11-06	SELL	Market Sell	CHIU EDDIE KA HO	Managing Director	-71.3K	₩35,800	-20.9%	₩2.6B ($1.8M)
2024-11-04	SELL	기타	CHIU EDDIE KA HO	Managing Director	-1.3K	₩33,350	-29.8%	₩44M ($31K)
2024-10-21	BUY	기타	CHIU EDDIE KA HO	Managing Director	1.3K	₩30,300	+42.9%	₩40M ($28K)
2024-10-21	BUY	기타	이동형 mobile	Managing Director	2.3K	₩30,300	+42.9%	₩70M ($49K)
2024-10-15	SELL	임원퇴임	김태중 Taejoong Kim	Managing Director	-48.0K	₩33,450	-29.4%	₩1.6B ($1.1M)

Showing the 50 most recent of 58 filings.

Frequently asked questions

Who has been buying HPSP stock?: 8 distinct insiders have filed 0 disclosed insider purchases in HPSP (403870), most recently on 2026-05-19. 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 HPSP have?: HPSP has 0 buy-side and 22 sell-side disclosures on record, covering ₩30.4B ($21.1M) in total reported value, spanning 2024-02-15 to 2026-05-19.
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.