Who has been buying Okura Industrial Co., Ltd. stock?

5 distinct investors have filed 8 disclosed large-shareholding filings in Okura Industrial Co., Ltd. (4221), most recently on 2025-06-17. 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 Okura Industrial Co., Ltd. have?

Okura Industrial Co., Ltd. has 8 buy-side and 1 sell-side disclosures on record, covering ¥4.5B ($29.2M) in total reported value, spanning 2021-11-22 to 2025-06-17.

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.

Okura Industrial Co., Ltd. 4221

Company

大倉工業株式会社Okura Industrial Co., Ltd.

Investors

Buys

Total Value

¥4.5B ($29.2M)

Avg Return

+99.54%

Last Filing

2025-06-17

Okura Industrial Co., Ltd. (4221) has 8 disclosed large-shareholding filings and 1 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥4.5B ($29.2M) in reported transaction value. The earliest filing StockDrifts holds for Okura Industrial Co., Ltd. is dated 2021-11-22; the most recent is 2025-06-17. Across these filings the average return since disclosure is +99.54%, 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
2025-06-17	SELL	unknown	オークラ共栄会理事長長野光幸 MItsuyuki Nagano, Chairperson, Okura Kyoeikai Client Stock Ownership	other	484.4K	¥4,295	-33.6%	¥587M ($3.8M)
2024-07-03	BUY	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	674.6K	¥2,982	-	-
2024-05-17	BUY	unknown	オークラ共栄会理事長長野光幸 Mitsuyuki Nagano, Chairperson, Okura Kyoeikai Client Stock Ownership	other	620.8K	¥2,933	+95.7%	¥1.8B ($11.7M)
2024-02-28	BUY	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	674.6K	¥3,235	+77.4%	¥2.2B ($13.9M)
2024-02-28	BUY	unknown	住化カラー株式会社 Sumika Color Co., Ltd.	strategic	39.6K	¥3,235	-	-
2024-01-05	BUY	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	819.1K	¥2,542	+125.8%	¥2.1B ($13.3M)
2024-01-05	BUY	unknown	住化カラー株式会社 Sumika Color Co., Ltd.	strategic	39.5K	¥2,542	+125.8%	¥13M ($81K)
2023-05-30	BUY	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	963.6K	¥2,051	-	-
2023-05-30	BUY	unknown	住化カラー株式会社 Sumika Color Co., Ltd.	strategic	35.1K	¥2,051	-	-
2022-01-21	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	251.6K	¥1,962	+192.6%	¥27M ($173K)
2022-01-21	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	73.4K	¥1,962	+192.6%	¥135M ($870K)
2021-11-22	BUY	unknown	SMBC日興証券株式会社 SMBC Nikko Securities Inc.	other	455.6K	¥2,152	+166.7%	¥980M ($6.3M)
2021-11-22	BUY	unknown	三井住友DSアセットマネジメント株式会社 Sumitomo Mitsui DS Asset Management Company, Limited	passive	238.3K	¥2,152	+166.7%	¥513M ($3.3M)

Frequently asked questions

Who has been buying Okura Industrial Co., Ltd. stock?: 5 distinct investors have filed 8 disclosed large-shareholding filings in Okura Industrial Co., Ltd. (4221), most recently on 2025-06-17. 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 Okura Industrial Co., Ltd. have?: Okura Industrial Co., Ltd. has 8 buy-side and 1 sell-side disclosures on record, covering ¥4.5B ($29.2M) in total reported value, spanning 2021-11-22 to 2025-06-17.
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.