Who has been buying 株式会社寺岡製作所 stock?

12 distinct investors have filed 11 disclosed large-shareholding filings in 株式会社寺岡製作所 (4987), most recently on 2024-03-04. 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 株式会社寺岡製作所 have?

株式会社寺岡製作所 has 11 buy-side and 4 sell-side disclosures on record, spanning 2023-04-07 to 2024-03-04.

Where does StockDrifts get 株式会社寺岡製作所 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.

株式会社寺岡製作所 4987

Company

株式会社寺岡製作所

Investors

Buys

Total Value

—

Avg Return

—

Last Filing

2024-03-04

株式会社寺岡製作所 (4987) has 11 disclosed large-shareholding filings and 4 disclosed disposals on record, filed by 12 distinct investors. The earliest filing StockDrifts holds for 株式会社寺岡製作所 is dated 2023-04-07; the most recent is 2024-03-04. All of it is parsed from EDINET large-shareholding (5%+) reports, the official disclosure system operated by the Financial Services Agency (Japan).

Price & insider activity (12 months)

No price data available

Recent filings

Date	Type	Source	Insider	Purpose	Shares	Price at filing	Return	Value
2024-03-04	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	2.5M	-	-	-
2023-12-20	SELL	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	0	-	-	-
2023-12-20	BUY	unknown	寺岡智子 Tomoko Teraoka	strategic	23.0K	-	-	-
2023-12-20	BUY	unknown	寺岡くに子 Kuniko Teraoka	strategic	526.1K	-	-	-
2023-12-20	BUY	unknown	富田美保 Miho Tomita	strategic	15.0K	-	-	-
2023-12-20	BUY	unknown	豊田万里子 Mariko Toyota	strategic	15.0K	-	-	-
2023-12-20	BUY	unknown	北川久美子 Kumiko Kitagawa	strategic	16.0K	-	-	-
2023-12-20	BUY	unknown	寺岡敬之郎 Takayuki Teraoka	activist	773.5K	-	-	-
2023-12-20	SELL	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	0	-	-	-
2023-12-20	BUY	unknown	富田美保 Miho Tomita	strategic	15.0K	-	-	-
2023-12-20	BUY	unknown	豊田万里子 Mariko Toyota	strategic	15.0K	-	-	-
2023-12-20	BUY	unknown	北川久美子 Kumiko Kitagawa	strategic	16.0K	-	-	-
2023-12-20	BUY	unknown	寺岡智子 Tomoko Teraoka	strategic	23.0K	-	-	-
2023-12-20	BUY	unknown	寺岡くに子 Kuniko Teraoka	strategic	526.1K	-	-	-
2023-12-20	BUY	unknown	寺岡敬之郎 Takayuki Teraoka	activist	773.5K	-	-	-
2023-12-20	BUY	unknown	株式会社KMM KMM Co., Ltd.	activist	16.8M	-	-	-
2023-12-20	BUY	unknown	株式会社KMM KMM Co., Ltd.	activist	16.8M	-	-	-
2023-12-19	SELL	unknown	寺岡製作所取引先持株会理事長安井隆太郎 Teraoka Seisakusho Supplier Stock Holding Association Chairman Ryutaro Yasui	unknown	0	-	-	-
2023-11-22	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	2.3M	-	-	-
2023-11-20	BUY	Market Buy	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	1.9M	-	-	-
2023-11-15	BUY	unknown	株式会社シティインデックスイレブンス City Index Eleven Co., Ltd.	activist	1.5M	-	-	-
2023-11-07	BUY	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	93.7K	-	-	-
2023-11-07	BUY	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	6.7M	-	-	-
2023-09-26	BUY	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	93.7K	-	-	-
2023-09-26	BUY	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	6.7M	-	-	-
2023-08-28	BUY	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	93.7K	-	-	-
2023-08-28	BUY	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	93.7K	-	-	-
2023-08-28	BUY	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	6.7M	-	-	-
2023-08-28	BUY	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	6.7M	-	-	-
2023-04-07	BUY	negotiated	伊藤忠商事株式会社 ITOCHU Corporation	strategic	6.7M	-	-	-
2023-04-07	SELL	negotiated	協栄電気株式会社 Kyoei Electric Co., Ltd.	strategic	0	-	-	-
2023-04-07	BUY	negotiated	伊藤忠プラスチックス株式会社 ITOCHU PLASTICS CO., LTD.	strategic	92.2K	-	-	-

Frequently asked questions

Who has been buying 株式会社寺岡製作所 stock?: 12 distinct investors have filed 11 disclosed large-shareholding filings in 株式会社寺岡製作所 (4987), most recently on 2024-03-04. 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 株式会社寺岡製作所 have?: 株式会社寺岡製作所 has 11 buy-side and 4 sell-side disclosures on record, spanning 2023-04-07 to 2024-03-04.
Where does StockDrifts get 株式会社寺岡製作所 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 株式会社寺岡製作所. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.