Who has been buying Sanritsu Corporation stock?

9 distinct investors have filed 14 disclosed large-shareholding filings in Sanritsu Corporation (9366), most recently on 2026-04-21. 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 Sanritsu Corporation have?

Sanritsu Corporation has 14 buy-side and 4 sell-side disclosures on record, covering ¥567M ($3.7M) in total reported value, spanning 2021-04-05 to 2026-04-21.

Where does StockDrifts get Sanritsu Corporation 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.

Sanritsu Corporation 9366

Company

株式会社サンリツSanritsu Corporation

Investors

Buys

Total Value

¥567M ($3.7M)

Avg Return

+14.49%

Last Filing

2026-04-21

Sanritsu Corporation (9366) has 14 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 9 distinct investors. Together those filings cover ¥567M ($3.7M) in reported transaction value. The earliest filing StockDrifts holds for Sanritsu Corporation is dated 2021-04-05; the most recent is 2026-04-21. 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 +14.49%, 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
2026-04-21	BUY	Market Buy	大津直樹 Naoki Otsu	passive	496.8K	¥942	+0.7%	¥468M ($3.0M)
2026-03-30	BUY	Market Buy	大津直樹 Naoki Otsu	passive	496.8K	¥905	+2.9%	¥450M ($2.9M)
2026-03-30	BUY	Market Buy	大津直樹 Naoki Otsu	passive	496.8K	¥905	+2.9%	¥450M ($2.9M)
2026-03-26	BUY	Market Buy	大津直樹 Naoki Otsu	passive	496.8K	¥909	+3.4%	¥57M ($370K)
2026-03-26	BUY	Market Buy	大津直樹 Naoki Otsu	passive	496.8K	¥909	+3.4%	¥57M ($370K)
2025-12-16	BUY	Market Buy	重田光時	passive	473.1K	¥870	-8.0%	¥445M ($2.9M)
2025-12-16	BUY	Market Buy	エルアール株式会社	passive	85.6K	¥870	+8.0%	¥80M ($519K)
2025-08-07	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	473.1K	¥829	+13.4%	¥37M ($238K)
2025-08-07	BUY	Market Buy	エルアール株式会社 LR.Inc	passive	15.7K	¥829	+13.4%	¥13M ($84K)
2025-08-07	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	400	¥829	+13.4%	¥332K ($2K)
2025-05-19	BUY	Market Buy	大津直樹 Naoki Otsu	passive	433.7K	¥784	+19.9%	¥50M ($322K)
2025-04-01	BUY	Market Buy	大津直樹 Naoki Otsu	passive	369.7K	¥815	+15.3%	¥301M ($1.9M)
2025-04-01	BUY	Market Buy	大津直樹 Naoki Otsu	passive	369.7K	¥815	+15.3%	¥1M ($9K)
2025-03-28	BUY	Market Buy	大津直樹 Naoki Otsu	passive	368.1K	¥831	+13.1%	¥50M ($325K)
2025-03-28	BUY	Market Buy	大津直樹 Naoki Otsu	passive	368.1K	¥831	+13.1%	¥50M ($325K)
2025-02-10	BUY	Market Buy	大津直樹 Naoki Otsu	passive	307.5K	¥771	+21.9%	¥237M ($1.5M)
2025-02-10	BUY	Market Buy	大津直樹 Naoki Otsu	passive	307.5K	¥771	+21.9%	¥237M ($1.5M)
2024-11-20	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	428.7K	¥774	+21.4%	¥46M ($300K)
2024-11-20	BUY	Market Buy	GLOBAL MANAGEMENT PARTNERS LIMITED Global Management Partners Limited	passive	400	¥774	+21.4%	¥46M ($300K)
2022-11-21	SELL	unknown	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	60.8K	¥728	-29.1%	¥14M ($87K)
2022-11-21	SELL	unknown	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	115.7K	¥728	-29.1%	¥875K ($6K)
2022-11-21	SELL	unknown	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	unknown	0	¥728	-29.1%	¥1M ($9K)
2021-12-15	BUY	Market Buy	株式会社鹿児島東インド会社 Kagoshima East India Inc	passive	100	¥851	+10.5%	¥85K ($549)
2021-12-15	BUY	Market Buy	重田光時 Mitsutoki Shigeta	passive	368.9K	¥851	+10.5%	¥310M ($2.0M)
2021-11-05	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	79.1K	¥858	+9.6%	¥36M ($229K)
2021-11-05	BUY	negotiated	三井住友トラスト・アセットマネジメント株式会社 Sumitomo Mitsui Trust Asset Management Co.,Ltd.	other	116.9K	¥858	+9.6%	¥21M ($136K)
2021-11-05	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	181.5K	¥858	+9.6%	¥156M ($1.0M)
2021-04-05	SELL	unknown	西原聖一郎 Seiichiro Nishihara	strategic	0	¥608.964	-54.4%	¥186M ($1.2M)

Frequently asked questions

Who has been buying Sanritsu Corporation stock?: 9 distinct investors have filed 14 disclosed large-shareholding filings in Sanritsu Corporation (9366), most recently on 2026-04-21. 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 Sanritsu Corporation have?: Sanritsu Corporation has 14 buy-side and 4 sell-side disclosures on record, covering ¥567M ($3.7M) in total reported value, spanning 2021-04-05 to 2026-04-21.
Where does StockDrifts get Sanritsu Corporation 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 Sanritsu Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.