Who has been buying WITZ Corporation stock?

10 distinct investors have filed 3 disclosed large-shareholding filings in WITZ Corporation (4440), most recently on 2025-06-04. 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 WITZ Corporation have?

WITZ Corporation has 3 buy-side and 16 sell-side disclosures on record, covering ¥540M ($3.5M) in total reported value, spanning 2021-04-08 to 2025-06-04.

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.

WITZ Corporation 4440

Company

株式会社ヴィッツWITZ Corporation

Investors

Buys

Total Value

¥540M ($3.5M)

Avg Return

+13.84%

Last Filing

2025-06-04

WITZ Corporation (4440) has 3 disclosed large-shareholding filings and 16 disclosed disposals on record, filed by 10 distinct investors. Together those filings cover ¥540M ($3.5M) in reported transaction value. The earliest filing StockDrifts holds for WITZ Corporation is dated 2021-04-08; the most recent is 2025-06-04. Across these filings the average return since disclosure is +13.84%, 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
2025-06-04	SELL	unknown	株式会社アイシン AISIN CORPORATION	other	300.0K	¥1,197	-116.0%	¥11M ($71K)
2025-06-04	BUY	negotiated	服部博行 Hiroyuki Hattori	activist	133.0K	¥1,197	+116.0%	¥11M ($74K)
2025-06-04	SELL	negotiated	大西秀一 Shuichi Onishi	activist	163.8K	¥1,197	-116.0%	¥55M ($358K)
2025-06-04	SELL	unknown	オークマ株式会社 OKUMA Corporation	other	300.0K	¥1,197	-116.0%	¥56M ($361K)
2025-06-04	BUY	unknown	脇田周爾 Shuji Wakita	strategic	118.0K	¥1,197	-	-
2025-06-04	SELL	negotiated	武田英幸 Hideyuki Takeda	activist	166.9K	¥1,197	-116.0%	¥54M ($348K)
2025-06-04	SELL	negotiated	株式会社Office Hat Office Hat Co., Ltd.	activist	610.0K	¥1,197	-116.0%	¥157M ($1.0M)
2025-06-04	BUY	unknown	株式会社SNA SNA Co., Ltd.	strategic	281.0K	¥1,197	+116.0%	¥331M ($2.1M)
2025-05-16	SELL	unknown	脇田周爾 Shuji Wakita	strategic	118.0K	¥1,210	-113.6%	¥505K ($3K)
2025-05-16	SELL	unknown	株式会社SNA SNA Co., Ltd.	strategic	431.0K	¥1,210	-113.6%	¥25M ($163K)
2023-12-05	SELL	unknown	森川聡久 Akihisa Morikawa	strategic	208.1K	¥930	-178.0%	¥17M ($108K)
2023-11-02	BUY	negotiated	大西秀一 Shuichi Onishi	activist	209.9K	¥950	+172.1%	¥197M ($1.3M)
2023-11-02	SELL	negotiated	大西舞 Mai Onishi	passive	2.7K	¥950	-172.1%	¥2M ($15K)
2021-07-30	SELL	negotiated	株式会社SNA SNA Co., Ltd.	activist	450.0K	¥1,724	-49.9%	¥4M ($23K)
2021-07-30	SELL	negotiated	脇田周爾 Shuji Wakita	activist	118.0K	¥1,724	-49.9%	¥717K ($5K)
2021-07-21	SELL	negotiated	脇田周爾 Shuji Wakita	activist	118.0K	¥1,818	-42.2%	¥4M ($24K)
2021-07-21	SELL	negotiated	株式会社SNA SNA Co., Ltd.	activist	450.0K	¥1,818	-42.2%	¥148M ($952K)
2021-07-21	SELL	negotiated	株式会社SNA SNA Co., Ltd.	activist	450.0K	¥1,818	-42.2%	¥148M ($952K)
2021-07-21	SELL	negotiated	脇田周爾 Shuji Wakita	activist	118.0K	¥1,818	-42.2%	¥4M ($24K)
2021-04-08	BUY	unknown	株式会社アイシン AISIN CORPORATION	other	300.0K	¥2,194	-	¥80M ($517K)
2021-04-08	SELL	unknown	株式会社アイシン AISIN CORPORATION	other	300.0K	¥2,194	-17.8%	¥80M ($517K)

Frequently asked questions

Who has been buying WITZ Corporation stock?: 10 distinct investors have filed 3 disclosed large-shareholding filings in WITZ Corporation (4440), most recently on 2025-06-04. 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 WITZ Corporation have?: WITZ Corporation has 3 buy-side and 16 sell-side disclosures on record, covering ¥540M ($3.5M) in total reported value, spanning 2021-04-08 to 2025-06-04.
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.