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Signpost Corporation 3996

Company
サインポスト株式会社Signpost Corporation
Investors
4
Buys
1
Total Value
¥760M ($4.9M)
Avg Return
-81.16%
Last Filing
2025-04-21

Signpost Corporation (3996) has 1 disclosed large-shareholding filings and 11 disclosed disposals on record, filed by 4 distinct investors. Together those filings cover ¥760M ($4.9M) in reported transaction value. The earliest filing StockDrifts holds for Signpost Corporation is dated 2021-03-17; the most recent is 2025-04-21. 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 -81.16%, measured from each filing date to the latest available close.

Price & insider activity (12 months)

Recent filings

DateTypeSourceInsiderPurposeSharesPrice at filingReturnValue
2025-04-21SELLunknown
奥井 裕介
Okui Yusuke
strategic590.0K¥339+35.1%¥44M ($285K)
2024-12-26SELLunknown
道しるべ株式会社
Michishirube Co.
strategic1.4M¥420+47.6%¥53M ($340K)
2024-04-22SELLunknown
奥井 裕介
Okui Yusuke
strategic720.0K¥645+65.9%¥91M ($585K)
2023-05-17SELLnegotiated
蒲原 寧
Kambara Yasushi
activist2.9M¥545+59.6%¥229M ($1.5M)
2023-05-15SELLunknown
奥井 裕介
Okui Yusuke
strategic860.0K¥572+61.5%¥75M ($481K)
2022-04-22SELLunknown
奥井 裕介
Okui Yusuke
strategic990.0K¥954+76.9%¥124M ($802K)
2022-04-22BUYunknown
奥井 裕介
Okui Yusuke
strategic990.0K¥954-76.9%¥124M ($802K)
2021-07-27SELLunknown
道しるべ株式会社
Michishirube Co.
strategic1.5M¥717+69.3%¥102M ($656K)
2021-07-09SELLnegotiated
蒲原 寧
Kambara Yasushi
activist3.3M¥789+72.1%¥359M ($2.3M)
2021-07-09BUYnegotiated
蒲原 寧
Kambara Yasushi
activist3.3M¥789-72.1%¥359M ($2.3M)
2021-04-19SELLunknown
道しるべ株式会社
Michishirube Co.
strategic1.6M¥1,065+79.3%¥58M ($374K)
2021-04-07SELLnegotiated
奥井 裕介
Okui Yusuke
activist1.1M¥1,074+79.5%¥166M ($1.1M)
2021-04-05SELLunknown
いちよし証券株式会社
Ichiyoshi Securities Co., Ltd.
other459.4K¥1,140+80.7%¥215M ($1.4M)
2021-03-17BUYunknown
いちよし証券株式会社
Ichiyoshi Securities Co., Ltd.
other650.3K¥1,168-81.2%¥760M ($4.9M)

Frequently asked questions

Who has been buying Signpost Corporation stock?
4 distinct investors have filed 1 disclosed large-shareholding filings in Signpost Corporation (3996), most recently on 2025-04-21. 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 Signpost Corporation have?
Signpost Corporation has 1 buy-side and 11 sell-side disclosures on record, covering ¥760M ($4.9M) in total reported value, spanning 2021-03-17 to 2025-04-21.
Where does StockDrifts get Signpost 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 Signpost Corporation. For how StockDrifts scores these disclosures, see the Japan insider signal tier research, or browse every Japanese stock we track.