Who has been buying Nippon Shokubai Co., Ltd. stock?

5 distinct investors have filed 5 disclosed large-shareholding filings in Nippon Shokubai Co., Ltd. (4114), most recently on 2025-06-02. 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 Nippon Shokubai Co., Ltd. have?

Nippon Shokubai Co., Ltd. has 5 buy-side and 13 sell-side disclosures on record, covering ¥1.3B ($8.4M) in total reported value, spanning 2021-04-28 to 2025-06-02.

Where does StockDrifts get Nippon Shokubai Co., Ltd. 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.

Nippon Shokubai Co., Ltd. 4114

Company

株式会社日本触媒Nippon Shokubai Co., Ltd.

Investors

Buys

Total Value

¥1.3B ($8.4M)

Avg Return

+61.36%

Last Filing

2025-06-02

Nippon Shokubai Co., Ltd. (4114) has 5 disclosed large-shareholding filings and 13 disclosed disposals on record, filed by 5 distinct investors. Together those filings cover ¥1.3B ($8.4M) in reported transaction value. The earliest filing StockDrifts holds for Nippon Shokubai Co., Ltd. is dated 2021-04-28; the most recent is 2025-06-02. 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 +61.36%, 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
2025-06-02	SELL	unknown	ENEOSホールディングス株式会社 ENEOS Holdings, Inc.	other	6.0M	¥1,650.5	-32.4%	¥3.5B ($22.6M)
2025-03-28	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	7.2M	¥1,792.5	-21.9%	¥3.1B ($20.0M)
2025-03-24	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	9.0M	¥1,832.5	-19.2%	¥1.5B ($9.8M)
2025-03-11	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	9.8M	¥1,815.5	-20.3%	¥3.0B ($19.6M)
2025-02-27	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	11.5M	¥1,837.5	-18.9%	¥2.9B ($18.7M)
2025-01-28	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	13.0M	¥1,875.5	-16.5%	¥3.0B ($19.3M)
2024-12-17	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	14.6M	¥1,893	-15.4%	¥3.1B ($19.8M)
2024-11-26	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	16.2M	¥1,862.5	-17.3%	¥3.0B ($19.1M)
2024-10-17	SELL	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	7.3M	¥1,755	-24.5%	¥2.7B ($17.7M)
2024-09-26	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	17.8M	¥1,782	-22.6%	¥2.9B ($19.0M)
2024-09-02	SELL	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	8.9M	¥1,709	-27.8%	¥2.7B ($17.4M)
2023-12-21	BUY	negotiated	りそなアセットマネジメント株式会社 Resona Asset Management Co., Ltd.	other	563.0K	¥1,321.25	+65.3%	¥744M ($4.8M)
2023-12-21	BUY	negotiated	株式会社りそな銀行 Resona Bank, Limited.	strategic	1.4M	¥1,321.25	+65.3%	¥1.9B ($12.1M)
2023-05-24	SELL	unknown	住友化学株式会社 SUMITOMO CHEMICAL COMPANY, LIMITED	strategic	2.7M	¥1,317.5	-65.8%	¥43M ($277K)
2022-11-29	SELL	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	5.1M	¥1,382.5	-58.0%	¥581M ($3.7M)
2022-04-13	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	5.5M	¥1,297.5	+68.4%	¥551M ($3.6M)
2022-02-28	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	5.1M	¥1,400	+56.0%	¥588M ($3.8M)
2021-04-28	BUY	subscription	シルチェスター・インターナショナル・インベスターズ・エルエルピー (Silchester International Investors LLP) Silchester International Investors LLP	activist	4.7M	¥1,440	+51.7%	¥593M ($3.8M)

Frequently asked questions

Who has been buying Nippon Shokubai Co., Ltd. stock?: 5 distinct investors have filed 5 disclosed large-shareholding filings in Nippon Shokubai Co., Ltd. (4114), most recently on 2025-06-02. 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 Nippon Shokubai Co., Ltd. have?: Nippon Shokubai Co., Ltd. has 5 buy-side and 13 sell-side disclosures on record, covering ¥1.3B ($8.4M) in total reported value, spanning 2021-04-28 to 2025-06-02.
Where does StockDrifts get Nippon Shokubai Co., Ltd. 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 Nippon Shokubai Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.