Who has been buying Miwon Chemical stock?

1 distinct insiders have filed 72 disclosed insider purchases in Miwon Chemical (134380), most recently on 2026-06-30. 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 Miwon Chemical have?

Miwon Chemical has 72 buy-side and 11 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-02-22 to 2026-06-30.

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.

Miwon Chemical 134380

Company

미원화학Miwon Chemical

Insiders

Buys

Total Value

₩3.2B ($2.2M)

Avg Return

+38.86%

Last Filing

2026-06-30

Miwon Chemical (134380) has 72 disclosed insider purchases and 11 disclosed disposals on record, filed by 1 distinct insiders. Together those filings cover ₩3.2B ($2.2M) in reported transaction value. The earliest filing StockDrifts holds for Miwon Chemical is dated 2024-02-22; the most recent is 2026-06-30. Across these filings the average return since disclosure is +38.86%, 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
2026-09-21	SELL	Market Sell	미성통상 Miseong Trading	-	-588	₩10,160	+1.3%	₩6M ($4K)
2026-09-18	SELL	Market Sell	미성통상 Miseong Trading	-	-145	₩10,440	+3.9%	₩2M ($1K)
2026-09-11	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-1.8K	₩9,950	-4.5%	₩18M ($12K)
2026-09-11	BUY	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	460	₩9,950	+4.5%	₩5M ($3K)
2026-06-30	BUY	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	86.5K	₩9,990	+2.1%	₩865M ($600K)
2026-06-08	SELL	Market Sell	미성통상 Miseong Trading	-	-21.1K	₩10,300	-0.3%	₩217M ($151K)
2026-06-05	SELL	Market Sell	미성통상 Miseong Trading	-	-10.0K	₩10,400	+0.7%	₩104M ($72K)
2026-05-14	SELL	Market Sell	미성통상 Miseong Trading	-	-10.0K	₩12,450	+7.0%	₩125M ($86K)
2026-05-13	BUY	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	260	₩12,700	-19.7%	₩3M ($2K)
2026-05-13	SELL	Market Sell	미성통상 Miseong Trading	-	-5.0K	₩12,700	+8.8%	₩64M ($44K)
2026-05-13	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-520	₩12,700	+19.7%	₩7M ($5K)
2026-05-06	SELL	Market Sell	미성통상 Miseong Trading	-	-200	₩12,820	+1.9%	₩3M ($2K)
2026-04-20	SELL	Market Sell	미성통상 Miseong Trading	-	-3.8K	₩13,620	+10.8%	₩52M ($36K)
2026-04-20	SELL	Market Sell	미성통상 Miseong Trading	-	-3.8K	₩13,620	+7.6%	₩52M ($36K)
2026-04-16	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-5.1K	₩14,790	+17.9%	₩75M ($52K)
2026-04-15	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-18.7K	₩12,860	+5.5%	₩241M ($167K)
2026-04-02	BUY	회사분할	미성통상 Miseong Trading	-	6.2M	₩11,860	+6.1%	₩73.8B ($51.2M)
2026-04-02	BUY	회사분할	박준원 Junwon Park	Treatment for directors	3.8K	₩11,860	+2.5%	₩45M ($31K)
2026-04-02	BUY	회사분할	미성통상 Miseong Trading	-	6.2M	₩11,860	+2.5%	₩73.8B ($51.2M)
2026-04-02	BUY	주식분할	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	2.0M	₩11,860	+2.5%	₩24.1B ($16.7M)
2026-02-19	SELL	Market Sell	미성통상 Miseong Trading	-	-2.3K	₩118,000	+4.8%	₩274M ($190K)
2026-02-13	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-711	₩119,300	+5.8%	₩85M ($59K)
2026-02-13	SELL	Market Sell	미성통상 Miseong Trading	-	-1.5K	₩119,300	+5.8%	₩179M ($124K)
2026-02-12	SELL	Market Sell	미성통상 Miseong Trading	-	-100	₩112,000	-0.4%	₩11M ($8K)
2026-02-11	SELL	Market Sell	미성통상 Miseong Trading	-	-800	₩106,500	-5.5%	₩85M ($59K)
2026-02-02	SELL	증여	김정돈 Kim Jeong-don	-	-17.0K	₩95,500	-17.7%	₩1.6B ($1.1M)
2026-01-29	BUY	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	4.0K	₩96,300	+16.7%	₩387M ($269K)
2026-01-09	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-3.0K	₩94,500	-18.9%	₩280M ($195K)
2026-01-01	BUY	신규선임	박준원 Junwon Park	Treatment for directors	419	₩94,600	+18.8%	₩40M ($28K)
2025-12-29	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-58	₩91,100	-23.4%	₩5M ($4K)
2025-12-24	BUY	신고대량매매	정규식 regular expression	torture	2.2K	₩94,000	+19.6%	₩207M ($144K)
2025-12-24	SELL	신고대량매매	김정돈 Kim Jeong-don	-	-2.2K	₩94,000	-19.6%	₩207M ($144K)
2025-07-11	BUY	Market Buy	미성통상 Miseong Trading	-	1	₩81,500	+37.9%	₩82K ($57)
2025-07-10	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-457	₩78,300	-43.5%	₩36M ($25K)
2025-07-02	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-775	₩79,800	-40.9%	₩62M ($43K)
2025-06-30	BUY	Market Buy	미성통상 Miseong Trading	-	165	₩79,200	+41.9%	₩13M ($9K)
2025-06-27	BUY	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	2.5K	₩79,300	+41.7%	₩201M ($139K)
2025-06-09	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-29	₩80,200	-40.1%	₩2M ($2K)
2025-05-26	BUY	Market Buy	미성통상 Miseong Trading	-	30	₩78,000	+44.1%	₩2M ($2K)
2025-05-22	BUY	Market Buy	미성통상 Miseong Trading	-	1.0K	₩77,800	+44.5%	₩78M ($54K)
2025-05-21	BUY	Market Buy	미성통상 Miseong Trading	-	336	₩77,800	+44.5%	₩26M ($18K)
2025-05-15	BUY	Market Buy	미성통상 Miseong Trading	-	1.4K	₩78,000	+44.1%	₩108M ($75K)
2025-05-15	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-980	₩78,000	-44.1%	₩76M ($53K)
2025-05-12	BUY	Market Buy	미성통상 Miseong Trading	-	400	₩78,000	+44.1%	₩31M ($22K)
2025-05-07	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-399	₩79,000	-42.3%	₩32M ($22K)
2025-04-24	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-3.3K	₩78,900	-42.5%	₩258M ($179K)
2025-04-17	BUY	Market Buy	미성통상 Miseong Trading	-	880	₩79,300	+41.7%	₩70M ($48K)
2025-04-16	BUY	Market Buy	미성통상 Miseong Trading	-	95	₩78,900	+42.5%	₩7M ($5K)
2025-04-15	BUY	Market Buy	미성통상 Miseong Trading	-	90	₩78,500	+43.2%	₩7M ($5K)
2025-04-11	SELL	기타	미원화학우리사주조합 Miwon Chemical Employee Stock Ownership Association	-	-29	₩78,800	-42.6%	₩2M ($2K)

Showing the 50 most recent of 117 filings.

Frequently asked questions

Who has been buying Miwon Chemical stock?: 1 distinct insiders have filed 72 disclosed insider purchases in Miwon Chemical (134380), most recently on 2026-06-30. 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 Miwon Chemical have?: Miwon Chemical has 72 buy-side and 11 sell-side disclosures on record, covering ₩3.2B ($2.2M) in total reported value, spanning 2024-02-22 to 2026-06-30.
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.