Who has been buying Sansha Electric Manufacturing Co.,Ltd. stock?

4 distinct investors have filed 1 disclosed large-shareholding filings in Sansha Electric Manufacturing Co.,Ltd. (6882), most recently on 2026-05-12. 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 Sansha Electric Manufacturing Co.,Ltd. have?

Sansha Electric Manufacturing Co.,Ltd. has 1 buy-side and 5 sell-side disclosures on record, covering ¥1.3B ($8.3M) in total reported value, spanning 2022-01-31 to 2026-05-12.

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.

Sansha Electric Manufacturing Co.,Ltd. 6882

Company

株式会社三社電機製作所Sansha Electric Manufacturing Co.,Ltd.

Investors

Buys

Total Value

¥1.3B ($8.3M)

Avg Return

+10.21%

Last Filing

2026-05-12

Sansha Electric Manufacturing Co.,Ltd. (6882) has 1 disclosed large-shareholding filings and 5 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥1.3B ($8.3M) in reported transaction value. The earliest filing StockDrifts holds for Sansha Electric Manufacturing Co.,Ltd. is dated 2022-01-31; the most recent is 2026-05-12. Across these filings the average return since disclosure is +10.21%, 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
2026-09-15	BUY	unknown	四方幸	strategic	45.9K	¥1,136	-	¥52M ($336K)
2026-09-15	SELL	unknown	合同会社みやしろ	strategic	678.0K	¥1,136	-1.7%	¥90M ($581K)
2026-05-12	BUY	unknown	合同会社みやしろ	activist	758.0K	¥1,323	-	-
2026-05-12	BUY	unknown	合同会社みやしろ	strategic	758.0K	¥1,323	-	-
2026-05-12	BUY	unknown	四方幸	unknown	45.9K	¥1,323	-	¥61M ($392K)
2026-05-12	BUY	unknown	四方幸	strategic	45.9K	¥1,323	-	¥61M ($392K)
2024-12-06	SELL	unknown	パナソニックホールディングス株式会社 Panasonic Holdings Corporation	strategic	745.4K	¥858	-34.6%	¥132M ($852K)
2024-01-31	SELL	unknown	パナソニックホールディングス株式会社 Panasonic Holdings Corporation	strategic	899.3K	¥1,722	+32.9%	¥273M ($1.8M)
2024-01-16	SELL	unknown	パナソニックホールディングス株式会社 Panasonic Holdings Corporation	strategic	1.1M	¥1,295	+10.8%	¥201M ($1.3M)
2022-11-30	BUY	unknown	三菱重工業株式会社 Mitsubishi Heavy Industries, Ltd.	strategic	1.3M	¥960	+20.3%	¥1.3B ($8.3M)
2022-11-14	SELL	unknown	パナソニックホールディングス株式会社 Panasonic Holdings Corporation	strategic	1.2M	¥900	-28.3%	¥856M ($5.5M)
2022-04-04	BUY	unknown	パナソニックホールディングス株式会社 Panasonic Holdings Corporation	strategic	2.2M	¥786	-	-
2022-02-15	BUY	unknown	合同会社みやしろ Miyashiro LLC	activist	758.0K	¥781	-	-
2022-01-31	SELL	unknown	パナソニック株式会社 Panasonic Corporation	strategic	2.2M	¥828	-39.5%	¥1.5B ($9.7M)

Frequently asked questions

Who has been buying Sansha Electric Manufacturing Co.,Ltd. stock?: 4 distinct investors have filed 1 disclosed large-shareholding filings in Sansha Electric Manufacturing Co.,Ltd. (6882), most recently on 2026-05-12. 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 Sansha Electric Manufacturing Co.,Ltd. have?: Sansha Electric Manufacturing Co.,Ltd. has 1 buy-side and 5 sell-side disclosures on record, covering ¥1.3B ($8.3M) in total reported value, spanning 2022-01-31 to 2026-05-12.
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.