Who has been buying SHANON Inc. stock?

6 distinct investors have filed 22 disclosed large-shareholding filings in SHANON Inc. (3976), most recently on 2026-02-16. 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 SHANON Inc. have?

SHANON Inc. has 22 buy-side and 24 sell-side disclosures on record, covering ¥2.3B ($14.8M) in total reported value, spanning 2021-05-28 to 2026-02-16.

Where does StockDrifts get SHANON Inc. 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.

SHANON Inc. 3976

Company

株式会社シャノンSHANON Inc.

Investors

Buys

Total Value

¥2.3B ($14.8M)

Avg Return

-47.03%

Last Filing

2026-02-16

SHANON Inc. (3976) has 22 disclosed large-shareholding filings and 24 disclosed disposals on record, filed by 6 distinct investors. Together those filings cover ¥2.3B ($14.8M) in reported transaction value. The earliest filing StockDrifts holds for SHANON Inc. is dated 2021-05-28; the most recent is 2026-02-16. 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 -47.03%, 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
2026-02-16	SELL	Market Buy	中村健一郎 Kenichiro Nakamura	passive	208.6K	¥377	+1.1%	¥67M ($434K)
2026-02-16	BUY	Market Buy	中村健一郎 Kenichiro Nakamura	passive	208.6K	¥377	-1.1%	¥67M ($434K)
2025-12-09	SELL	Market Buy	中村健一郎 Kenichiro Nakamura	passive	387.9K	¥385	+3.1%	¥23M ($149K)
2025-08-27	BUY	Market Buy	中村健一郎 Kenichiro Nakamura	passive	447.8K	¥401	-7.0%	¥9M ($60K)
2025-08-27	SELL	Market Buy	中村健一郎 Kenichiro Nakamura	passive	471.4K	¥401	+7.0%	¥24M ($158K)
2025-08-21	SELL	Market Buy	中村健一郎 Kenichiro Nakamura	passive	471.4K	¥380	+1.8%	¥23M ($150K)
2025-07-14	SELL	Market Buy	中村健一郎 Kenichiro Nakamura	passive	532.3K	¥371	-0.5%	¥23M ($148K)
2025-07-14	BUY	Market Buy	中村健一郎 Kenichiro Nakamura	passive	532.3K	¥371	+0.5%	¥23M ($148K)
2025-02-19	BUY	Market Buy	中村健一郎 Kenichiro Nakamura	passive	594.4K	¥442	-15.6%	¥263M ($1.7M)
2025-01-31	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	0	¥476	+21.6%	¥630M ($4.1M)
2025-01-30	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.7M	¥473	+21.1%	¥1.0B ($6.6M)
2025-01-27	BUY	unknown	中村健一郎 Kenichiro Nakamura	activist	594.4K	¥442	-15.6%	¥451M ($2.9M)
2025-01-27	BUY	unknown	永島毅一郎 KIICHIRO NAGASHIMA	strategic	307.7K	¥442	-15.6%	¥250M ($1.6M)
2025-01-27	BUY	unknown	永島毅一郎 KIICHIRO NAGASHIMA	strategic	307.7K	¥442	-15.6%	¥250M ($1.6M)
2025-01-27	SELL	unknown	永島毅一郎 KIICHIRO NAGASHIMA	strategic	307.7K	¥442	+15.6%	¥158M ($1.0M)
2025-01-27	SELL	unknown	中村健一郎 Kenichiro Nakamura	activist	594.4K	¥442	+15.6%	¥451M ($2.9M)
2025-01-24	BUY	unknown	株式会社イノベーション Innovation Inc.	activist	3.4M	¥445	-16.2%	¥1.5B ($9.6M)
2025-01-23	BUY	unknown	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥426	-12.4%	¥1M ($7K)
2025-01-23	BUY	unknown	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥426	-12.4%	¥1M ($7K)
2025-01-23	BUY	unknown	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥426	-12.4%	¥1M ($7K)
2025-01-23	SELL	unknown	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥426	+12.4%	¥1M ($7K)
2025-01-21	BUY	unknown	株式会社イノベーション Innovation Inc.	activist	3.4M	¥501	-25.6%	¥1.7B ($10.9M)
2025-01-16	BUY	unknown	永島毅一郎 KIICHIRO NAGASHIMA	activist	495.0K	¥568	-34.3%	¥281M ($1.8M)
2025-01-15	BUY	unknown	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥574	-35.0%	¥542M ($3.5M)
2025-01-15	BUY	unknown	永島毅一郎 KIICHIRO NAGASHIMA	activist	495.0K	¥574	-35.0%	¥73M ($471K)
2025-01-15	BUY	Market Buy	中村健一郎 Kenichiro Nakamura	activist	943.8K	¥574	-35.0%	¥71M ($456K)
2025-01-15	BUY	Market Buy	永島毅一郎 KIICHIRO NAGASHIMA	activist	495.0K	¥574	-35.0%	¥73M ($471K)
2024-12-20	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.4M	¥560	-33.4%	¥2.4B ($15.8M)
2024-11-11	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.4M	¥400	-6.8%	¥16M ($101K)
2024-11-01	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.3M	¥402	+7.2%	¥16M ($101K)
2024-05-10	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.4M	¥436	-14.4%	¥17M ($110K)
2024-05-08	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.3M	¥425	+12.2%	¥5M ($34K)
2024-05-08	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.3M	¥425	-12.2%	¥5M ($34K)
2024-02-09	BUY	Market Buy	中村健一郎 kenichiro Nakamura	activist	943.8K	¥426	-12.4%	¥52M ($338K)
2024-02-09	BUY	Market Buy	永島毅一郎 KIICHIRO NAGASHIMA	activist	495.0K	¥426	-12.4%	¥54M ($350K)
2024-02-05	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	4.2M	¥434	-14.1%	¥336M ($2.2M)
2023-11-09	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.6M	¥485	-23.1%	¥24M ($158K)
2023-11-02	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.5M	¥499	+25.3%	¥25M ($162K)
2023-06-26	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.6M	¥746	+50.0%	¥24M ($158K)
2023-05-31	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.6M	¥786	-52.5%	¥1.3B ($8.1M)
2023-05-30	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.6M	¥758	+50.8%	¥37M ($236K)
2023-05-11	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.7M	¥732	-49.0%	¥35M ($228K)
2023-05-08	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.6M	¥751	+50.3%	¥36M ($234K)
2023-04-25	SELL	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.7M	¥732	+49.0%	¥24M ($153K)
2023-03-23	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.7M	¥904	-58.7%	¥35M ($225K)
2023-03-17	BUY	Market Buy	株式会社ウィズ・パートナーズ Whiz Partners Inc.	passive	1.7M	¥895	-58.3%	¥1.5B ($9.6M)
2023-02-08	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	0	¥1,217	+69.3%	¥467M ($3.0M)
2023-02-01	SELL	subscription	マッコーリーバンクリミテッド (Macquarie Bank Limited) Macquarie Bank Limited	passive	434.8K	¥891	+58.1%	¥20M ($127K)
2023-01-17	SELL	unknown	永島毅一郎 KIICHIRO NAGASHIMA	activist	315.0K	¥749	+50.2%	¥659K ($4K)
2023-01-16	SELL	unknown	中村健一郎 kenichiro Nakamura	activist	693.8K	¥747	+50.1%	¥438K ($3K)

Showing the 50 most recent of 70 filings.

Frequently asked questions

Who has been buying SHANON Inc. stock?: 6 distinct investors have filed 22 disclosed large-shareholding filings in SHANON Inc. (3976), most recently on 2026-02-16. 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 SHANON Inc. have?: SHANON Inc. has 22 buy-side and 24 sell-side disclosures on record, covering ¥2.3B ($14.8M) in total reported value, spanning 2021-05-28 to 2026-02-16.
Where does StockDrifts get SHANON Inc. 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 SHANON Inc.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.