Who has been buying Kato Sangyo Co., Ltd. stock?

6 distinct investors have filed 5 disclosed large-shareholding filings in Kato Sangyo Co., Ltd. (9869), most recently on 2026-05-12. 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 Kato Sangyo Co., Ltd. have?

Kato Sangyo Co., Ltd. has 5 buy-side and 2 sell-side disclosures on record, covering ¥16.5B ($106.3M) in total reported value, spanning 2021-03-19 to 2026-05-12.

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.

Kato Sangyo Co., Ltd. 9869

Company

加藤産業株式会社Kato Sangyo Co., Ltd.

Investors

Buys

Total Value

¥16.5B ($106.3M)

Avg Return

+59.76%

Last Filing

2026-05-12

Kato Sangyo Co., Ltd. (9869) has 5 disclosed large-shareholding filings and 2 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥16.5B ($106.3M) in reported transaction value. The earliest filing StockDrifts holds for Kato Sangyo Co., Ltd. is dated 2021-03-19; the most recent is 2026-05-12. Across these filings the average return since disclosure is +59.76%, 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
2026-06-09	BUY	unknown	フィデリティマネジメントアンドリサーチカンパニーエルエルシー Fidelity Management & Research Company LLC	corporate	976.9K	¥5,820	+17.7%	¥5.7B ($36.7M)
2026-06-09	BUY	unknown	エフアイエーエムエルエルシー FIAM LLC	other	453.2K	¥5,820	+17.7%	¥2.6B ($17.0M)
2026-06-09	BUY	unknown	フィデリティマネジメントトラストカンパニー Fidelity Management Trust Company	other	124.1K	¥5,820	+17.7%	¥722M ($4.7M)
2026-06-09	BUY	unknown	エフエムアールインベストメントマネジメントユーケーリミテッドLimited) FMR Investment Management (UK	other	190.1K	¥5,820	+17.7%	¥1.1B ($7.1M)
2026-06-09	BUY	unknown	フィデリティ・マネジメント・アンド・リサーチ・ジャパン株式会社	other	90.8K	¥5,820	+17.7%	¥528M ($3.4M)
2026-05-12	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.8M	¥5,930	+15.5%	¥10.9B ($70.2M)
2026-05-12	BUY	unknown	エフエムアールエルエルシー(FMR LLC) FMR LLC	other	1.8M	¥5,930	+15.5%	¥10.9B ($70.2M)
2024-01-12	SELL	negotiated	三井物産株式会社 Mitsui & Co., LTD.	activist	1.6M	¥4,660	-47.0%	¥7.4B ($47.5M)
2023-12-15	BUY	Market Buy	三井物産株式会社 Mitsui & Co., LTD.	activist	3.2M	¥4,435	+54.5%	¥1.2B ($7.5M)
2022-12-01	BUY	unknown	加藤和弥 kazuya kato	activist	53.4K	¥3,465	+97.7%	¥185M ($1.2M)
2022-12-01	BUY	unknown	株式会社加藤興産 Kato Kosan Co., Ltd.	activist	850.0K	¥3,465	+97.7%	¥2.9B ($19.0M)
2022-12-01	BUY	unknown	株式会社プラスダブル Plus Double Co., Ltd.	activist	1.3M	¥3,465	+97.7%	¥4.4B ($28.6M)
2021-04-09	SELL	unknown	住友商事株式会社 SUMITOMO CORPORATION	strategic	931.0K	¥3,450	-98.5%	¥3.4B ($22.2M)
2021-03-19	BUY	unknown	住友商事株式会社 SUMITOMO CORPORATION	strategic	1.9M	¥3,355.991	-	-

Frequently asked questions

Who has been buying Kato Sangyo Co., Ltd. stock?: 6 distinct investors have filed 5 disclosed large-shareholding filings in Kato Sangyo Co., Ltd. (9869), most recently on 2026-05-12. 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 Kato Sangyo Co., Ltd. have?: Kato Sangyo Co., Ltd. has 5 buy-side and 2 sell-side disclosures on record, covering ¥16.5B ($106.3M) in total reported value, spanning 2021-03-19 to 2026-05-12.
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.