Who has been buying UBE Corporation stock?

14 distinct investors have filed 25 disclosed large-shareholding filings in UBE Corporation (4208), 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 UBE Corporation have?

UBE Corporation has 25 buy-side and 14 sell-side disclosures on record, covering ¥9.3B ($59.9M) in total reported value, spanning 2021-10-22 to 2026-04-21.

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.

UBE Corporation 4208

Company

宇部興産株式会社UBE Corporation

Investors

Buys

Total Value

¥9.3B ($59.9M)

Avg Return

+6.93%

Last Filing

2026-04-21

UBE Corporation (4208) has 25 disclosed large-shareholding filings and 14 disclosed disposals on record, filed by 14 distinct investors. Together those filings cover ¥9.3B ($59.9M) in reported transaction value. The earliest filing StockDrifts holds for UBE Corporation is dated 2021-10-22; the most recent is 2026-04-21. Across these filings the average return since disclosure is +6.93%, 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
2026-07-06	BUY	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	316.2K	¥3,261	+6.3%	¥693M ($4.5M)
2026-07-06	BUY	Market Buy	野村アセットマネジメント株式会社	other	6.3M	¥3,261	+6.3%	¥3.0B ($19.7M)
2026-07-06	SELL	unknown	野村證券株式会社	other	-12.5K	¥3,261	-	-
2026-04-21	SELL	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	109.3K	¥2,413	-43.7%	¥564M ($3.6M)
2026-04-21	BUY	Market Buy	野村アセットマネジメント株式会社	other	5.3M	¥2,413	+43.7%	¥103M ($661K)
2026-04-21	BUY	unknown	野村證券株式会社	other	-734	¥2,413	-0.6%	-
2026-04-06	SELL	unknown	野村證券株式会社	other	5.2K	¥2,445	-41.8%	¥1.0B ($6.5M)
2026-04-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	339.9K	¥2,445	+41.8%	¥286M ($1.8M)
2026-04-06	BUY	unknown	野村アセットマネジメント株式会社	other	5.3M	¥2,445	+41.8%	¥1.5B ($9.4M)
2025-09-19	SELL	negotiated	アモーヴァ・アセットマネジメント株式会社 Amova Asset Management Co., Ltd.	other	2.1M	¥2,362	-46.8%	¥1.4B ($9.1M)
2025-09-19	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥2,362	-	-
2025-09-19	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	3.5M	¥2,362	+46.8%	¥753M ($4.9M)
2024-08-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥2,490.5	-	-
2024-08-06	SELL	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	3.2M	¥2,490.5	-39.2%	¥1.6B ($10.1M)
2024-08-06	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.7M	¥2,490.5	-39.2%	¥185M ($1.2M)
2024-07-12	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.2M	¥2,789	+24.3%	¥6.2B ($39.7M)
2024-07-12	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.0K	¥2,789	+24.3%	¥2.6B ($17.0M)
2024-07-12	BUY	negotiated	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	519.0K	¥2,789	+24.3%	¥1.4B ($9.3M)
2024-07-12	BUY	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.7M	¥2,789	+24.3%	¥4.7B ($30.5M)
2024-05-08	SELL	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	3.8M	¥2,892.5	-19.9%	¥737M ($4.8M)
2024-05-08	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥2,892.5	-	-
2024-05-08	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.7M	¥2,892.5	+19.9%	¥737M ($4.8M)
2024-02-21	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥2,560	-	-
2024-02-21	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	4.1M	¥2,560	+35.4%	¥2.0B ($12.8M)
2024-02-21	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.5M	¥2,560	+35.4%	¥1.3B ($8.6M)
2023-10-16	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.9M	¥2,321	+49.4%	¥567M ($3.7M)
2023-10-16	SELL	negotiated	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	unknown	0	¥2,321	-49.4%	¥1.3B ($8.1M)
2023-10-16	SELL	negotiated	三菱UFJアセットマネジメント株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.2M	¥2,321	-49.4%	¥49M ($318K)
2023-10-16	BUY	negotiated	三菱UFJモルガン・スタンレー証券株式会社 Mitsubishi UFJ Morgan Stanley Securities Co., Ltd.	other	111.3K	¥2,321	-	¥258M ($1.7M)
2023-10-16	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.0K	¥2,321	-	-
2023-01-30	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.0K	¥2,011	+72.4%	¥1.9B ($12.3M)
2023-01-30	BUY	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.7M	¥2,011	+72.4%	¥5.4B ($34.7M)
2023-01-30	BUY	negotiated	MUFGセキュリティーズEMEA MUFG Securities EMEA plc	other	542.0K	¥2,011	+72.4%	¥1.1B ($7.0M)
2023-01-30	BUY	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.2M	¥2,011	+72.4%	¥2.4B ($15.4M)
2022-06-20	BUY	negotiated	株式会社三菱UFJ銀行 Mitsubishi UFJ Financial Group Inc.	strategic	945.0K	¥2,004	-	-
2022-06-20	SELL	negotiated	三菱UFJ信託銀行株式会社 Mitsubishi UFJ Financial Group Inc.	passive	2.5M	¥2,004	-73.0%	¥1.5B ($9.7M)
2022-06-20	SELL	negotiated	三菱UFJ国際投信株式会社 Mitsubishi UFJ Financial Group Inc.	passive	1.1M	¥2,004	-73.0%	¥1.1B ($7.0M)
2022-06-06	BUY	unknown	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	222.9K	¥2,049	+69.2%	¥457M ($2.9M)
2022-06-06	BUY	unknown	野村證券株式会社 Nomura Securities Co.,Ltd.	other	418.3K	¥2,049	+69.2%	¥857M ($5.5M)
2022-06-06	BUY	unknown	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	4.7M	¥2,049	+69.2%	¥9.6B ($61.9M)
2022-05-19	BUY	Market Buy	野村證券株式会社 Nomura Securities Co.,Ltd.	other	625.6K	¥1,964	+76.5%	¥1.0B ($6.6M)
2022-05-19	SELL	Market Buy	ノムラインターナショナルピーエルシー NOMURA INTERNATIONAL PLC	other	3.8K	¥1,964	-76.5%	¥667M ($4.3M)
2022-05-19	BUY	Market Buy	野村アセットマネジメント株式会社 Nomura Asset Management Co., Ltd.	other	4.6M	¥1,964	+76.5%	¥9.0B ($57.8M)
2022-03-22	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥2,050	+69.1%	¥241M ($1.6M)
2022-03-22	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	3.3M	¥2,050	+69.1%	¥6.7B ($43.5M)
2022-03-22	BUY	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.0M	¥2,050	+69.1%	¥4.0B ($25.8M)
2021-12-06	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	3.2M	¥1,955	+77.3%	¥62M ($402K)
2021-12-06	SELL	negotiated	日興アセットマネジメント株式会社 Nikko Asset Management Co.,Ltd.	other	2.0M	¥1,955	-77.3%	¥228M ($1.5M)
2021-12-06	BUY	negotiated	三井住友信託銀行株式会社 Sumitomo Mitsui Trust Bank,Limited	strategic	117.5K	¥1,955	-	-
2021-10-22	BUY	unknown	株式会社みずほ銀行 Mizuho Bank, Ltd.	strategic	874.1K	¥2,185	-	-

Showing the 50 most recent of 52 filings.

Frequently asked questions

Who has been buying UBE Corporation stock?: 14 distinct investors have filed 25 disclosed large-shareholding filings in UBE Corporation (4208), 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 UBE Corporation have?: UBE Corporation has 25 buy-side and 14 sell-side disclosures on record, covering ¥9.3B ($59.9M) in total reported value, spanning 2021-10-22 to 2026-04-21.
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.