Who has been buying KH Neochem Co., Ltd. stock?

23 distinct investors have filed 48 disclosed large-shareholding filings in KH Neochem Co., Ltd. (4189), most recently on 2026-04-07. 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 KH Neochem Co., Ltd. have?

KH Neochem Co., Ltd. has 48 buy-side and 41 sell-side disclosures on record, covering ¥45.8B ($295.7M) in total reported value, spanning 2021-04-22 to 2026-04-07.

Do insider buys in Japanese stocks predict returns?

Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

KH Neochem Co., Ltd. 4189

Company

ＫＨネオケム株式会社KH Neochem Co., Ltd.

Investors

Buys

Total Value

¥45.8B ($295.7M)

Avg Return

+7.01%

Last Filing

2026-04-07

KH Neochem Co., Ltd. (4189) has 48 disclosed large-shareholding filings and 41 disclosed disposals on record, filed by 23 distinct investors. Together those filings cover ¥45.8B ($295.7M) in reported transaction value. The earliest filing StockDrifts holds for KH Neochem Co., Ltd. is dated 2021-04-22; the most recent is 2026-04-07. Across these filings the average return since disclosure is +7.01%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2026-09-25	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.8M	¥3,300	-	-
2026-08-03	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.8M	¥3,210	-	-
2026-06-24	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.8M	¥2,918	+13.1%	¥705M ($4.5M)
2026-06-16	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.5M	¥2,708	+21.9%	¥513M ($3.3M)
2026-06-08	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.3M	¥2,617	+26.1%	¥972M ($6.3M)
2026-05-19	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	6.0M	¥2,653	+24.4%	¥710M ($4.6M)
2026-04-07	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	5.7M	¥2,829	-	¥1.1B ($6.8M)
2026-04-07	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	5.7M	¥2,829	+16.6%	¥1.1B ($6.8M)
2026-03-18	SELL	unknown	ウエリントン・マネージメント・カンパニー・エルエルピー Wellington Management Company LLP	other	1.5M	¥2,914	-13.3%	¥22M ($140K)
2026-03-18	SELL	unknown	ウエリントン・マネージメント・ジャパン・ピーティーイー・リミテッド Wellington Management Japan Pte Ltd	other	793.5K	¥2,914	-13.3%	¥909M ($5.9M)
2026-03-18	SELL	unknown	ウエリントン・マネージメント・ホンコン・リミテッド Wellington Management Hong Kong Ltd	other	0	¥2,914	-13.3%	¥639M ($4.1M)
2026-03-17	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	5.3M	¥2,819	-	¥1.3B ($8.2M)
2026-03-17	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	5.3M	¥2,819	+17.1%	¥1.3B ($8.2M)
2026-03-16	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.9M	¥2,813	-	¥1.1B ($7.1M)
2026-03-16	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.9M	¥2,813	+17.3%	¥1.1B ($7.1M)
2026-03-05	BUY	negotiated	三井住友信託銀行株式会社	strategic	183.3K	¥3,000	-	-
2026-03-05	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	693.1K	¥3,000	-10.0%	¥100M ($647K)
2026-03-05	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	715.4K	¥3,000	-10.0%	¥1.1B ($7.1M)
2026-02-27	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.5M	¥3,115	-	¥23M ($149K)
2026-02-27	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.5M	¥3,115	+5.9%	¥23M ($149K)
2026-02-25	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.5M	¥3,025	-	¥1.3B ($8.3M)
2026-02-25	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.5M	¥3,025	+9.1%	¥1.3B ($8.3M)
2026-02-19	BUY	negotiated	三井住友信託銀行株式会社	strategic	183.3K	¥3,050	-	-
2026-02-19	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	727.8K	¥3,050	-	-
2026-02-19	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	1.1M	¥3,050	-8.2%	¥2.2B ($14.4M)
2026-02-17	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.1M	¥2,945	-	¥3.3B ($21.6M)
2026-02-17	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	4.1M	¥2,945	+12.1%	¥3.3B ($21.6M)
2026-02-09	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.9M	¥2,778	-	¥2.4B ($15.7M)
2026-02-09	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.0M	¥2,778	-	¥5.7B ($36.6M)
2026-02-09	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.9M	¥2,778	+18.8%	¥2.4B ($15.7M)
2026-02-09	BUY	Market Buy	株式会社ストラテジックキャピタル Strategic Capital, Inc.	activist	2.0M	¥2,778	+18.8%	¥5.7B ($36.6M)
2026-02-06	BUY	Market Buy	トライヴィスタ・キャピタル株式会社 TriVista Capital Inc.	passive	980.0K	¥2,745	-	¥3.5B ($22.6M)
2026-02-06	BUY	Market Buy	トライヴィスタ・キャピタル株式会社 TriVista Capital Inc.	passive	980.0K	¥2,745	-	¥2.7B ($17.4M)
2026-02-05	SELL	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	2.7M	¥2,647	-24.7%	¥1.7B ($10.8M)
2026-01-22	BUY	negotiated	三井住友信託銀行株式会社	strategic	183.3K	¥2,588	-	-
2026-01-22	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	743.0K	¥2,588	-	-
2026-01-22	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	2.4M	¥2,588	-27.5%	¥971M ($6.3M)
2026-01-13	BUY	negotiated	三井住友信託銀行株式会社	strategic	183.3K	¥2,476	-	-
2026-01-13	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	744.7K	¥2,476	-33.3%	¥9M ($59K)
2026-01-13	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	2.8M	¥2,476	-33.3%	¥101M ($653K)
2026-01-07	BUY	negotiated	三井住友信託銀行株式会社	strategic	183.3K	¥2,486	-	-
2026-01-07	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社	other	744.9K	¥2,486	-32.7%	¥175M ($1.1M)
2026-01-07	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社	other	2.9M	¥2,486	-32.7%	¥803M ($5.2M)
2025-11-21	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	733.3K	¥2,350	-	-
2025-11-21	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	147.3K	¥2,350	+40.4%	¥148M ($957K)
2025-11-21	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	720.3K	¥2,350	-40.4%	¥882M ($5.7M)
2025-09-19	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	86.8K	¥2,801	-17.8%	¥4.2B ($26.9M)
2025-09-19	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	1.4M	¥2,801	+17.8%	¥3.8B ($24.7M)
2025-09-05	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	183.3K	¥2,830	-	-
2025-09-05	SELL	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	817.5K	¥2,830	-16.6%	¥53M ($339K)

Showing the 50 most recent of 132 filings.

Frequently asked questions

Who has been buying KH Neochem Co., Ltd. stock?: 23 distinct investors have filed 48 disclosed large-shareholding filings in KH Neochem Co., Ltd. (4189), most recently on 2026-04-07. 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 KH Neochem Co., Ltd. have?: KH Neochem Co., Ltd. has 48 buy-side and 41 sell-side disclosures on record, covering ¥45.8B ($295.7M) in total reported value, spanning 2021-04-22 to 2026-04-07.
Do insider buys in Japanese stocks predict returns?: Not uniformly. StockDrifts scored 101,000+ Japanese large-shareholding filings on fixed 12-month forward returns and found the predictive power concentrated in specific filer types and filing patterns rather than spread evenly across all disclosures.

More on this data

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