Who has been buying Kubota Pharmaceutical Holdings Co., Ltd. stock?

9 distinct investors have filed 57 disclosed large-shareholding filings in Kubota Pharmaceutical Holdings Co., Ltd. (4596), most recently on 2026-05-01. 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 Kubota Pharmaceutical Holdings Co., Ltd. have?

Kubota Pharmaceutical Holdings Co., Ltd. has 57 buy-side and 69 sell-side disclosures on record, covering ¥37.4B ($241.2M) in total reported value, spanning 2021-07-20 to 2026-05-01.

Where does StockDrifts get Kubota Pharmaceutical Holdings Co., Ltd. insider data?

From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.

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.

Kubota Pharmaceutical Holdings Co., Ltd. 4596

Company

窪田製薬ホールディングス株式会社Kubota Pharmaceutical Holdings Co., Ltd.

Investors

Buys

Total Value

¥37.4B ($241.2M)

Avg Return

+16.58%

Last Filing

2026-05-01

Kubota Pharmaceutical Holdings Co., Ltd. (4596) has 57 disclosed large-shareholding filings and 69 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥37.4B ($241.2M) in reported transaction value. The earliest filing StockDrifts holds for Kubota Pharmaceutical Holdings Co., Ltd. is dated 2021-07-20; the most recent is 2026-05-01. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan). Across these filings the average return since disclosure is +16.58%, 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
2026-07-14	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥69	-7.3%	-
2026-07-14	SELL	Market Buy	エボファンド Evo Fund	activist	7.0M	¥69	+7.3%	¥433M ($2.8M)
2026-07-08	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥70	-10.0%	-
2026-07-08	BUY	private	エボファンド Evo Fund	activist	13.3M	¥70	-10.0%	¥215M ($1.4M)
2026-07-06	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥117	-46.1%	-
2026-07-06	SELL	private	エボファンド Evo Fund	activist	10.0M	¥117	+46.1%	¥392M ($2.5M)
2026-07-02	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥57	+3.5%	-
2026-07-02	SELL	private	エボファンド Evo Fund	activist	13.6M	¥57	-3.5%	¥31M ($203K)
2026-07-02	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥57	+3.5%	-
2026-07-02	SELL	private	エボファンド Evo Fund	activist	13.6M	¥57	-3.5%	¥31M ($203K)
2026-06-23	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥55	+18.2%	-
2026-06-23	SELL	private	エボファンド Evo Fund	activist	14.2M	¥55	-18.2%	¥83M ($538K)
2026-06-10	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥56	+23.2%	-
2026-06-10	SELL	private	エボファンド Evo Fund	activist	15.8M	¥56	-23.2%	¥92M ($596K)
2026-06-01	SELL	private	エボファンド Evo Fund	activist	17.4M	¥58	+3.5%	¥88M ($570K)
2026-06-01	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥58	-3.5%	-
2026-05-18	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥70	-25.7%	-
2026-05-18	SELL	private	エボファンド Evo Fund	activist	19.0M	¥70	+25.7%	¥102M ($660K)
2026-05-01	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥93	-34.4%	-
2026-05-01	SELL	private	エボファンド Evo Fund	activist	20.7M	¥93	+34.4%	¥140M ($901K)
2026-04-23	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥96	-30.2%	-
2026-04-23	SELL	private	エボファンド Evo Fund	activist	22.3M	¥96	+30.2%	¥151M ($971K)
2026-04-15	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥94	-24.5%	-
2026-04-15	SELL	private	エボファンド Evo Fund	activist	24.1M	¥94	+24.5%	¥139M ($897K)
2026-04-06	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥100	-7.0%	-
2026-04-06	SELL	private	エボファンド Evo Fund	activist	25.8M	¥100	+7.0%	¥151M ($972K)
2026-03-27	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥102	-1.0%	-
2026-03-27	SELL	private	エボファンド Evo Fund	activist	27.6M	¥102	-1.0%	¥2.8B ($18.3M)
2026-03-24	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥104	+1.0%	-
2026-03-24	SELL	private	エボファンド Evo Fund	activist	29.4M	¥104	+1.0%	¥3.0B ($19.6M)
2026-03-18	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥108	+4.6%	-
2026-03-18	SELL	private	エボファンド Evo Fund	activist	31.2M	¥108	+4.6%	¥3.2B ($20.7M)
2026-03-16	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥115	+10.4%	-
2026-03-16	SELL	private	エボファンド Evo Fund	activist	33.5M	¥115	+10.4%	¥3.5B ($22.3M)
2026-03-12	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥120	+14.2%	-
2026-03-12	SELL	private	エボファンド Evo Fund	activist	35.5M	¥120	+14.2%	¥3.7B ($23.6M)
2026-03-11	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥129	+20.2%	-
2026-03-11	SELL	private	エボファンド Evo Fund	activist	38.8M	¥129	+20.2%	¥4.0B ($25.8M)
2026-03-10	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥122	+15.6%	-
2026-03-10	SELL	private	エボファンド Evo Fund	activist	42.5M	¥122	+15.6%	¥4.4B ($28.2M)
2026-03-09	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥117	+12.0%	-
2026-03-09	BUY	private	エボファンド Evo Fund	activist	48.4M	¥117	-12.0%	¥5.0B ($32.2M)
2026-03-05	BUY	private	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥135	+23.7%	-
2026-03-05	SELL	private	エボファンド Evo Fund	activist	45.0M	¥135	+23.7%	¥4.6B ($29.9M)
2026-01-13	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥45	-128.9%	-
2026-01-13	BUY	Market Buy	エボファンド Evo Fund	activist	48.4M	¥45	+128.9%	¥5.0B ($32.2M)
2026-01-09	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥45	-128.9%	-
2026-01-09	SELL	Market Buy	エボファンド Evo Fund	activist	45.0M	¥45	-128.9%	¥4.6B ($29.9M)
2026-01-05	BUY	Market Buy	エボリューション・キャピタル・マネジメント・エルエルシー Evolution Capital Management LLC	passive	0	¥42	+145.2%	-
2026-01-05	BUY	Market Buy	エボファンド Evo Fund	activist	48.4M	¥42	+145.2%	¥5.0B ($32.2M)

Showing the 50 most recent of 200 filings.

Frequently asked questions

Who has been buying Kubota Pharmaceutical Holdings Co., Ltd. stock?: 9 distinct investors have filed 57 disclosed large-shareholding filings in Kubota Pharmaceutical Holdings Co., Ltd. (4596), most recently on 2026-05-01. 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 Kubota Pharmaceutical Holdings Co., Ltd. have?: Kubota Pharmaceutical Holdings Co., Ltd. has 57 buy-side and 69 sell-side disclosures on record, covering ¥37.4B ($241.2M) in total reported value, spanning 2021-07-20 to 2026-05-01.
Where does StockDrifts get Kubota Pharmaceutical Holdings Co., Ltd. insider data?: From EDINET large-shareholding (5%+) reports — the official filing system run by the Financial Services Agency (Japan). StockDrifts parses each disclosure and matches it to daily price history; the original filings remain available directly from EDINET.
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.

Source filings

Every trade listed above is disclosed in EDINET large-shareholding (5%+) reports, filed with the Financial Services Agency (Japan). View the original EDINET filings for Kubota Pharmaceutical Holdings Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.