Who has been buying Note Inc. stock?

7 distinct investors have filed 7 disclosed large-shareholding filings in Note Inc. (5243), most recently on 2026-04-22. 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 Note Inc. have?

Note Inc. has 7 buy-side and 7 sell-side disclosures on record, covering ¥11.3B ($72.6M) in total reported value, spanning 2022-12-22 to 2026-04-22.

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.

Note Inc. 5243

Company

note株式会社Note Inc.

Investors

Buys

Total Value

¥11.3B ($72.6M)

Avg Return

+270.06%

Last Filing

2026-04-22

Note Inc. (5243) has 7 disclosed large-shareholding filings and 7 disclosed disposals on record, filed by 7 distinct investors. Together those filings cover ¥11.3B ($72.6M) in reported transaction value. The earliest filing StockDrifts holds for Note Inc. is dated 2022-12-22; the most recent is 2026-04-22. Across these filings the average return since disclosure is +270.06%, 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
2026-04-22	SELL	unknown	加藤貞顕 Sadaaki Kato	activist	5.1M	¥2,691	-11.8%	¥5.4B ($34.8M)
2026-04-13	BUY	private	株式会社KADOKAWA KADOKAWA CORPORATION	strategic	1.0M	¥2,909	+3.5%	¥2.9B ($18.8M)
2025-12-02	BUY	unknown	NAVER株式会社(NAVER Corporation) NAVER Corporation	strategic	1.4M	¥1,590	+89.3%	¥2.3B ($14.7M)
2025-11-06	SELL	unknown	株式会社日本経済新聞社 Nikkei Inc.	strategic	661.0K	¥1,600	-88.1%	¥722M ($4.7M)
2025-02-03	BUY	unknown	グーグル・インターナショナル・エルエルシー(Google International LLC) Google International LLC	strategic	984.2K	¥1,479	+103.5%	¥1.5B ($9.4M)
2024-06-14	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥667	-	¥37M ($238K)
2024-06-14	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥667	-	-
2024-06-14	SELL	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥667	-351.3%	¥37M ($238K)
2023-08-25	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥481	-	-
2023-08-25	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥481	-	¥36M ($230K)
2023-08-25	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥481	-	-
2023-08-25	SELL	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥481	-	¥36M ($230K)
2023-02-15	SELL	Market Buy	フェムトパートナーズ株式会社 Femto Partners Inc.	passive	660.9K	¥720	-318.1%	¥116M ($747K)
2023-02-15	SELL	Market Buy	フェムトパートナーズ株式会社 Femto Partners Inc.	passive	822.3K	¥720	-318.1%	¥557M ($3.6M)
2023-01-24	SELL	Market Buy	フェムトパートナーズ株式会社 Femto Partners Inc.	passive	1.6M	¥450	-	¥76M ($491K)
2022-12-27	BUY	unknown	株式会社日本経済新聞社 Nikkei Inc.	strategic	991.0K	¥437	-	¥433M ($2.8M)
2022-12-26	BUY	Market Buy	フェムトパートナーズ株式会社 Femto Partners Inc.	passive	1.7M	¥456	-	¥795M ($5.1M)
2022-12-22	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥519	-	¥2.9B ($18.6M)
2022-12-22	BUY	Market Buy	イメージ・フレイム・インベストメント(香港)リミテッド(Image Frame Investment (HK) Limited) Image Frame Investment (HK) Limited	passive	970.0K	¥519	+480.0%	¥503M ($3.2M)
2022-12-22	BUY	unknown	加藤貞顕 Sadaaki Kato	activist	5.6M	¥519	+480.0%	¥2.9B ($18.6M)

Frequently asked questions

Who has been buying Note Inc. stock?: 7 distinct investors have filed 7 disclosed large-shareholding filings in Note Inc. (5243), most recently on 2026-04-22. 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 Note Inc. have?: Note Inc. has 7 buy-side and 7 sell-side disclosures on record, covering ¥11.3B ($72.6M) in total reported value, spanning 2022-12-22 to 2026-04-22.
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.