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Japan Process Development Co., Ltd. 9651

Company
日本プロセス株式会社Japan Process Development Co., Ltd.
Investors
3
Buys
4
Total Value
¥4.0B ($26.1M)
Avg Return
+56.13%
Last Filing
2025-10-09

Japan Process Development Co., Ltd. (9651) has 4 disclosed large-shareholding filings and 3 disclosed disposals on record, filed by 3 distinct investors. Together those filings cover ¥4.0B ($26.1M) in reported transaction value. The earliest filing StockDrifts holds for Japan Process Development Co., Ltd. is dated 2023-03-07; the most recent is 2025-10-09. 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 +56.13%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2026-07-14SELLunknown
大部 力
Obu Chikara
strategic292.1K¥1,999-3.4%¥841M ($5.4M)
2026-07-14SELLunknown
大部 仁
Obu Hitoshi
activist278.4K¥1,999-3.4%¥924M ($6.0M)
2025-10-09SELLunknown
大部 力
Obu Chikara
strategic712.1K¥1,722-6.8%¥1.7B ($11.1M)
2025-10-09SELLunknown
大部 仁
Obu Hitoshi
activist741.4K¥1,722-6.8%¥1.7B ($11.1M)
2025-10-01BUYMarket Buy
大部 仁
Obu Hitoshi
activist1.7M¥1,695+8.6%¥7M ($47K)
2025-10-01BUYunknown
大部 力
Obu Chikara
strategic1.7M¥1,695+8.6%¥2.9B ($18.8M)
2025-09-30BUYacquisition
SCSK株式会社
SCSK Corporation
strategic2.0M¥1,690+8.9%¥3.4B ($21.9M)
2023-08-03BUYunknown
大部 力
Obu Chikara
strategic1.7M¥918+100.4%¥1.6B ($10.2M)
2023-03-07BUYMarket Buy
大部 仁
Obu Hitoshi
activist1.7M¥904+103.5%¥650M ($4.2M)
2023-03-07SELLunknown
大部 満里子(相続人代表 大部 仁)
Obu Mariko
strategic0¥904-103.5%¥1.0B ($6.5M)
2023-03-07BUYMarket Buy
大部 力
Obu Chikara
strategic1.7M¥904+103.5%¥648M ($4.2M)

Frequently asked questions

Who has been buying Japan Process Development Co., Ltd. stock?
3 distinct investors have filed 4 disclosed large-shareholding filings in Japan Process Development Co., Ltd. (9651), most recently on 2025-10-09. 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 Japan Process Development Co., Ltd. have?
Japan Process Development Co., Ltd. has 4 buy-side and 3 sell-side disclosures on record, covering ¥4.0B ($26.1M) in total reported value, spanning 2023-03-07 to 2025-10-09.
Where does StockDrifts get Japan Process Development 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 Japan Process Development Co., Ltd.. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.