Who has been buying Link-U Inc. stock?

5 distinct investors have filed 2 disclosed large-shareholding filings in Link-U Inc. (4446), most recently on 2026-02-18. 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 Link-U Inc. have?

Link-U Inc. has 2 buy-side and 6 sell-side disclosures on record, covering ¥412M ($2.7M) in total reported value, spanning 2021-07-28 to 2026-02-18.

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.

Link-U Inc. 4446

Company

株式会社Link-ULink-U Inc.

Investors

Buys

Total Value

¥412M ($2.7M)

Avg Return

-37.21%

Last Filing

2026-02-18

Link-U Inc. (4446) has 2 disclosed large-shareholding filings and 6 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥412M ($2.7M) in reported transaction value. The earliest filing StockDrifts holds for Link-U Inc. is dated 2021-07-28; the most recent is 2026-02-18. Across these filings the average return since disclosure is -37.21%, 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
2026-07-21	SELL	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	367.8K	¥804	+5.5%	¥156M ($1.0M)
2026-07-21	SELL	Market Buy	ブラックロック・ジャパン株式会社	passive	123.8K	¥804	+5.5%	¥32M ($206K)
2026-07-01	SELL	unknown	山田剛史 Tsuyoshi Yamada	activist	2.9M	¥840	+9.5%	¥1.0B ($6.6M)
2026-07-01	BUY	Market Buy	株式会社アポロ・キャピタル代表取締役社長都木聡	passive	1.2M	¥840	-9.5%	¥1.0B ($6.6M)
2026-07-01	BUY	Market Buy	株式会社セレス代表取締役社長都木聡	passive	126.0K	¥840	-9.5%	¥106M ($683K)
2026-07-01	BUY	Market Buy	株式会社アポロ・キャピタル代表取締役社長都木聡	passive	1.2M	¥840	-9.5%	¥1.0B ($6.6M)
2026-07-01	BUY	Market Buy	株式会社セレス代表取締役社長都木聡	passive	126.0K	¥840	-9.5%	¥106M ($683K)
2026-06-19	SELL	unknown	山田剛史 Tsuyoshi Yamada	activist	4.2M	¥736	-3.3%	¥1M ($7K)
2026-06-19	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.2M	¥736	-	¥1M ($7K)
2026-02-18	BUY	Market Buy	ブラックロック・ジャパン株式会社	passive	162.5K	¥1,169	-35.0%	¥190M ($1.2M)
2026-02-18	BUY	Market Buy	ブラックロック(ルクセンブルグ)エス・エーS.A.) BlackRock (Luxembourg	passive	561.0K	¥1,169	-35.0%	¥656M ($4.2M)
2025-07-17	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.2M	¥332	-	-
2025-01-07	SELL	unknown	山田剛史 Tsuyoshi Yamada	activist	4.2M	¥395	-92.4%	¥112M ($722K)
2024-09-26	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥502	-	-
2024-07-12	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥588	-	-
2024-06-27	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥591	-	-
2024-05-23	SELL	negotiated	松原裕樹 Yuuki Matsubara	activist	4.4M	¥613	-24.0%	¥8M ($50K)
2023-09-19	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥862	-	-
2023-07-26	SELL	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥918	+17.2%	¥12M ($76K)
2022-06-13	BUY	Market Buy	株式会社メディアシーク MEDIASEEK, inc.	passive	1.2M	¥655	-	¥73M ($472K)
2022-06-13	SELL	Market Buy	株式会社メディアシーク MEDIASEEK, inc.	passive	1.2M	¥655	-16.0%	¥73M ($472K)
2022-06-08	BUY	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥679	-	¥83M ($539K)
2022-06-08	SELL	unknown	山田剛史 Tsuyoshi Yamada	activist	4.4M	¥679	-11.9%	¥83M ($539K)
2022-02-28	BUY	negotiated	松原裕樹 Yuuki Matsubara	activist	4.4M	¥770	-	-
2021-07-28	SELL	negotiated	松原裕樹 Yuuki Matsubara	activist	4.4M	¥1,570	+51.6%	¥78M ($501K)
2021-07-28	BUY	negotiated	松原裕樹 Yuuki Matsubara	activist	4.4M	¥1,570	-	¥78M ($501K)

Frequently asked questions

Who has been buying Link-U Inc. stock?: 5 distinct investors have filed 2 disclosed large-shareholding filings in Link-U Inc. (4446), most recently on 2026-02-18. 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 Link-U Inc. have?: Link-U Inc. has 2 buy-side and 6 sell-side disclosures on record, covering ¥412M ($2.7M) in total reported value, spanning 2021-07-28 to 2026-02-18.
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.