Who has been buying Sakata Seed Corporation stock?

8 distinct investors have filed 32 disclosed large-shareholding filings in Sakata Seed Corporation (1377), most recently on 2026-04-22. 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 Sakata Seed Corporation have?

Sakata Seed Corporation has 32 buy-side and 35 sell-side disclosures on record, covering ¥24.4B ($157.5M) in total reported value, spanning 2021-04-22 to 2026-04-22.

Where does StockDrifts get Sakata Seed 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.

Sakata Seed Corporation 1377

Company

株式会社サカタのタネSakata Seed Corporation

Investors

Buys

Total Value

¥24.4B ($157.5M)

Avg Return

+11.03%

Last Filing

2026-04-22

Sakata Seed Corporation (1377) has 32 disclosed large-shareholding filings and 35 disclosed disposals on record, filed by 8 distinct investors. Together those filings cover ¥24.4B ($157.5M) in reported transaction value. The earliest filing StockDrifts holds for Sakata Seed Corporation is dated 2021-04-22; the most recent is 2026-04-22. 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 +11.03%, 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
2026-06-22	SELL	unknown	アセットマネジメントOne株式会社	other	618.2K	¥4,190	-4.2%	¥38M ($246K)
2026-06-22	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,190	+4.2%	¥321M ($2.1M)
2026-06-22	SELL	negotiated	みずほ証券株式会社	strategic	580.4K	¥4,190	-4.2%	¥152M ($982K)
2026-06-22	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,190	+4.2%	¥6.3B ($40.5M)
2026-06-05	BUY	Market Buy	アセットマネジメントOne株式会社	other	624.4K	¥4,160	+0.1%	¥19M ($122K)
2026-06-05	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,160	+0.1%	¥319M ($2.1M)
2026-06-05	SELL	negotiated	みずほ証券株式会社	strategic	616.9K	¥4,160	-0.1%	¥132M ($853K)
2026-06-05	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,160	+0.1%	¥6.2B ($40.3M)
2026-06-05	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	45.9K	¥4,160	+0.1%	¥191M ($1.2M)
2026-06-05	BUY	unknown	株式会社三井住友銀行	other	1.5M	¥4,160	+0.1%	¥6.2B ($40.0M)
2026-06-05	SELL	unknown	SMBC日興証券株式会社	other	87.0K	¥4,160	-0.1%	¥3.0B ($19.4M)
2026-05-22	BUY	Market Buy	三井住友DSアセットマネジメント株式会社	passive	46.8K	¥4,200	-0.1%	¥197M ($1.3M)
2026-05-22	BUY	unknown	株式会社三井住友銀行	other	1.5M	¥4,200	-0.1%	¥6.3B ($40.4M)
2026-05-22	BUY	unknown	SMBC日興証券株式会社	other	807.3K	¥4,200	-0.1%	¥3.4B ($21.9M)
2026-04-22	BUY	Market Buy	アセットマネジメントOne株式会社	other	621.5K	¥4,105	+1.3%	¥37M ($241K)
2026-04-22	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,105	+1.3%	¥314M ($2.0M)
2026-04-22	BUY	Market Buy	みずほ証券株式会社	strategic	650.6K	¥4,105	+1.3%	¥205M ($1.3M)
2026-04-22	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,105	+1.3%	¥6.2B ($39.7M)
2026-04-07	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,490	-8.7%	¥344M ($2.2M)
2026-04-07	BUY	unknown	みずほ証券株式会社	strategic	599.6K	¥4,490	-8.7%	¥20M ($132K)
2026-04-07	BUY	unknown	アセットマネジメントOne株式会社	other	612.6K	¥4,490	-8.7%	¥2.8B ($17.7M)
2026-04-07	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,490	-8.7%	¥6.7B ($43.5M)
2026-03-23	SELL	unknown	アセットマネジメントOne株式会社	other	613.4K	¥4,330	+2.5%	¥2.6B ($16.7M)
2026-03-23	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,330	+2.5%	¥323M ($2.1M)
2026-03-23	BUY	unknown	みずほ証券株式会社	strategic	594.0K	¥4,330	-2.5%	¥2.5B ($16.2M)
2026-03-23	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,330	+2.5%	¥6.3B ($40.8M)
2026-03-06	SELL	unknown	アセットマネジメントOne株式会社	other	623.2K	¥4,240	+0.5%	¥2.6B ($17.0M)
2026-03-06	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,240	+0.5%	¥323M ($2.1M)
2026-03-06	SELL	unknown	みずほ証券株式会社	strategic	584.5K	¥4,240	+0.5%	¥2.5B ($15.9M)
2026-03-06	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,240	+0.5%	¥6.3B ($40.8M)
2026-02-19	BUY	Market Buy	有限会社ティーエム興産 TM Kosan Ltd.	passive	6.6M	¥4,260	-0.9%	¥28.2B ($181.6M)
2025-12-22	SELL	unknown	アセットマネジメントOne株式会社	other	651.1K	¥4,205	-0.4%	¥2.7B ($17.7M)
2025-12-22	BUY	unknown	みずほ信託銀行株式会社	other	76.6K	¥4,205	-0.4%	¥323M ($2.1M)
2025-12-22	BUY	unknown	みずほ証券株式会社	strategic	598.4K	¥4,205	+0.4%	¥2.5B ($16.3M)
2025-12-22	BUY	unknown	株式会社みずほ銀行	strategic	1.5M	¥4,205	-0.4%	¥6.3B ($40.8M)
2025-12-05	SELL	Market Buy	有限会社ティーエム興産 TM Kosan Ltd.	passive	6.6M	¥4,155	-1.6%	¥3.5B ($22.4M)
2025-12-05	BUY	Market Buy	アセットマネジメントOne株式会社	other	655.3K	¥4,155	+1.6%	¥2.8B ($17.8M)
2025-12-05	SELL	Market Buy	みずほ信託銀行株式会社	other	76.6K	¥4,155	-1.6%	¥323M ($2.1M)
2025-12-05	BUY	Market Buy	みずほ証券株式会社	strategic	595.7K	¥4,155	-1.6%	¥2.5B ($16.2M)
2025-12-05	BUY	Market Buy	株式会社みずほ銀行	strategic	1.5M	¥4,155	-1.6%	¥6.3B ($40.8M)
2025-11-14	BUY	Market Buy	有限会社ティーエム興産 TM Kosan Ltd.	passive	7.6M	¥3,985	+5.9%	¥30.3B ($195.6M)
2025-10-14	BUY	Market Buy	有限会社ティーエム興産 TM Kosan Ltd.	passive	7.6M	¥3,795	+11.2%	¥2.6B ($16.5M)
2025-10-14	BUY	Market Buy	有限会社ティーエム興産 TM Kosan Ltd.	passive	7.6M	¥3,795	+11.2%	¥28.9B ($186.3M)
2025-09-22	SELL	unknown	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	640.4K	¥3,670	-15.0%	¥17M ($108K)
2025-09-22	BUY	unknown	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	85.1K	¥3,670	+15.0%	¥312M ($2.0M)
2025-09-22	SELL	unknown	みずほ証券株式会社 Mizuho Securities Co., Ltd.	strategic	596.5K	¥3,670	-15.0%	¥17M ($108K)
2025-09-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	1.5M	¥3,670	+15.0%	¥5.5B ($35.5M)
2025-09-05	SELL	Market Buy	アセットマネジメントOne株式会社 Asset Management One Co., Ltd.	other	646.1K	¥3,640	-15.9%	¥33M ($213K)
2025-09-05	BUY	Market Buy	みずほ信託銀行株式会社 Mizuho Trust & Banking Co., Ltd.	other	87.0K	¥3,640	+15.9%	¥116M ($746K)
2025-09-05	BUY	Market Buy	みずほ証券株式会社 Mizuho Securities Co., Ltd.	strategic	599.4K	¥3,640	+15.9%	¥132M ($853K)

Showing the 50 most recent of 138 filings.

Frequently asked questions

Who has been buying Sakata Seed Corporation stock?: 8 distinct investors have filed 32 disclosed large-shareholding filings in Sakata Seed Corporation (1377), most recently on 2026-04-22. 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 Sakata Seed Corporation have?: Sakata Seed Corporation has 32 buy-side and 35 sell-side disclosures on record, covering ¥24.4B ($157.5M) in total reported value, spanning 2021-04-22 to 2026-04-22.
Where does StockDrifts get Sakata Seed 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 Sakata Seed Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.