Who has been buying Carna Biosciences, Inc. stock?

11 distinct investors have filed 16 disclosed large-shareholding filings in Carna Biosciences, Inc. (4572), most recently on 2026-05-11. 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 Carna Biosciences, Inc. have?

Carna Biosciences, Inc. has 16 buy-side and 21 sell-side disclosures on record, covering ¥6.1B ($39.5M) in total reported value, spanning 2021-08-03 to 2026-05-11.

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.

Carna Biosciences, Inc. 4572

Company

カルナバイオサイエンス株式会社Carna Biosciences, Inc.

Investors

Buys

Total Value

¥6.1B ($39.5M)

Avg Return

-17.07%

Last Filing

2026-05-11

Carna Biosciences, Inc. (4572) has 16 disclosed large-shareholding filings and 21 disclosed disposals on record, filed by 11 distinct investors. Together those filings cover ¥6.1B ($39.5M) in reported transaction value. The earliest filing StockDrifts holds for Carna Biosciences, Inc. is dated 2021-08-03; the most recent is 2026-05-11. Across these filings the average return since disclosure is -17.07%, 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
2026-07-29	SELL	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	8.4M	¥292	-55.8%	¥115M ($744K)
2026-06-02	SELL	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	8.9M	¥454	-0.2%	¥121M ($778K)
2026-05-20	SELL	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	9.3M	¥435	-4.6%	¥149M ($964K)
2026-05-11	SELL	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	9.8M	¥470	+3.2%	¥157M ($1.0M)
2026-05-11	BUY	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	9.8M	¥470	-	¥157M ($1.0M)
2026-04-16	SELL	Market Buy	アトス・キャピタル・リミテッド (Athos Capital Limited) Athos Capital Limited	passive	935.0K	¥432	-5.3%	¥204M ($1.3M)
2026-04-16	BUY	Market Buy	アトス・キャピタル・リミテッド (Athos Capital Limited) Athos Capital Limited	passive	935.0K	¥432	-	¥204M ($1.3M)
2026-02-20	BUY	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	10.3M	¥319	-	¥1.2B ($7.9M)
2026-02-20	BUY	private	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	10.3M	¥319	+42.6%	¥1.2B ($7.9M)
2026-01-13	BUY	Market Buy	五味大輔 Gomi Daisuke	passive	985.0K	¥418	+8.8%	¥412M ($2.7M)
2025-11-28	BUY	Market Buy	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	3.4M	¥228	+99.6%	¥233M ($1.5M)
2025-10-03	BUY	Market Buy	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	2.0M	¥210	+116.7%	¥430M ($2.8M)
2025-10-03	BUY	Market Buy	キャンターフィッツジェラルドヨーロッパ(Cantor Fitzgerald Europe) Cantor Fitzgerald Europe	passive	2.0M	¥210	-	¥430M ($2.8M)
2024-10-21	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・エルエルシー Morgan Stanley & Co. LLC	other	0	¥331	-	-
2024-10-21	SELL	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー Morgan Stanley & Co. International plc	other	636.1K	¥331	-37.5%	¥139M ($898K)
2024-10-21	BUY	Market Buy	アトス・キャピタル・リミテッド (Athos Capital Limited) Athos Capital Limited	passive	1.4M	¥331	+37.5%	¥463M ($3.0M)
2024-10-04	BUY	unknown	モルガン・スタンレー・アンド・カンパニー・インターナショナル・ピーエルシー(Morgan Stanley & Co. International plc) Morgan Stanley & Co. International plc	other	998.9K	¥360	+26.4%	¥360M ($2.3M)
2024-01-09	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	497.6K	¥524	-13.2%	¥258M ($1.7M)
2024-01-09	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	25.2K	¥524	+13.2%	¥217M ($1.4M)
2023-11-20	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	440.5K	¥824	-44.8%	¥363M ($2.3M)
2023-11-20	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	594.5K	¥824	-44.8%	¥490M ($3.2M)
2023-08-07	SELL	Market Buy	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	0	¥892	+49.0%	¥1.3B ($8.1M)
2023-03-16	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	1.5M	¥453	-0.4%	¥197M ($1.3M)
2023-03-14	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.0M	¥461	+1.3%	¥103M ($664K)
2023-02-27	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.2M	¥483	+5.8%	¥85M ($549K)
2023-02-20	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.4M	¥499	+8.8%	¥194M ($1.3M)
2023-02-01	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	3.1M	¥486	+6.4%	¥80M ($519K)
2023-02-01	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.9M	¥486	+6.4%	¥82M ($530K)
2023-01-24	BUY	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	3.3M	¥500	-	¥82M ($532K)
2023-01-24	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	3.3M	¥500	+9.0%	¥82M ($532K)
2023-01-17	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	3.5M	¥468	+2.8%	¥76M ($491K)
2023-01-10	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	3.7M	¥515	+11.7%	¥205M ($1.3M)
2022-12-28	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	4.2M	¥514	+11.5%	¥119M ($769K)
2022-12-16	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	4.5M	¥620	+26.6%	¥117M ($757K)
2022-12-12	BUY	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	4.7M	¥643	-29.2%	¥1.4B ($9.3M)
2022-04-25	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	1.4M	¥1,014	+55.1%	¥178M ($1.1M)
2022-01-19	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	1.6M	¥1,015	+55.2%	¥158M ($1.0M)
2021-10-14	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	1.8M	¥1,033	+56.0%	¥138M ($890K)
2021-09-27	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	1.9M	¥1,099	+58.6%	¥267M ($1.7M)
2021-08-27	SELL	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.2M	¥1,198	+62.0%	¥153M ($989K)
2021-08-19	BUY	unknown	ゴールドマン・サックス証券株式会社 Goldman Sachs Japan Co.,Ltd.	other	0	¥1,222	-	-
2021-08-19	BUY	unknown	ゴールドマン・サックス・インターナショナル Goldman Sachs International	other	517.8K	¥1,222	-62.8%	¥624M ($4.0M)
2021-08-19	BUY	unknown	ゴールドマン・サックス・アンド・カンパニー・エルエルシー Goldman Sachs & Co. LLC	other	0	¥1,222	-	-
2021-08-18	BUY	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.3M	¥1,258	-	¥170M ($1.1M)
2021-08-18	BUY	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.3M	¥1,258	-	¥170M ($1.1M)
2021-08-18	BUY	Market Buy	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.3M	¥1,258	-63.8%	¥160M ($1.0M)
2021-08-05	BUY	unknown	ゴールドマン・サックス証券株式会社 Goldman Sachs Japan Co.,Ltd.	other	0	¥1,287	-64.7%	-
2021-08-05	BUY	unknown	ゴールドマン・サックス・アンド・カンパニー・エルエルシー Goldman Sachs & Co. LLC	other	0	¥1,287	-64.7%	-
2021-08-05	BUY	unknown	ゴールドマン・サックス・インターナショナル Goldman Sachs International	other	664.2K	¥1,287	-64.7%	¥855M ($5.5M)
2021-08-03	BUY	private	キャンターフィッツジェラルドアンドコー(Cantor Fitzgerald & Co.) Cantor Fitzgerald & Co.	passive	2.5M	¥1,309	-65.2%	¥3.3B ($21.0M)

Frequently asked questions

Who has been buying Carna Biosciences, Inc. stock?: 11 distinct investors have filed 16 disclosed large-shareholding filings in Carna Biosciences, Inc. (4572), most recently on 2026-05-11. 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 Carna Biosciences, Inc. have?: Carna Biosciences, Inc. has 16 buy-side and 21 sell-side disclosures on record, covering ¥6.1B ($39.5M) in total reported value, spanning 2021-08-03 to 2026-05-11.
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.