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Tokyo-listed stock · 4434
サーバーワークス (4434): large-holder filings
In the last 12 months, large holders reported 2 changes to stakes of 5% or more.
Stakes raised / cut 0 / 212 months
Large holders filing 212 months
Last close ¥2,80130 Oct 2026
One-year change +57.5%
6 disclosed buys and sales on record since 5 June 2025. A large holder files with EDINET when a stake of 5% or more moves by a point or more; a change has a value once it can be priced.
Latest disclosures
Disclosed Filed by Type Amount Traded
26 Jan 2026 Ryo Oishi5% holder (Japan)
Sale
¥984M ($6.2M)
19 Jan 2026
19 Jan 2026 NTT DATA JAPAN CORPORATION5% holder (Japan)
Sale
¥538M ($3.4M)
16 Jan 2026
26 Dec 2025 NTT Communications Corporation5% holder (Japan)
Buy
Not valued
13 Mar 2019
26 Dec 2025 NTT Communications Corporation5% holder (Japan)
Sale
Not valued
1 Jul 2023
24 Oct 2025 Ryo Oishi5% holder (Japan)
Sale
¥17.2M ($114K)
17 Oct 2025
5 Jun 2025 Ryo Oishi5% holder (Japan)
Sale
¥91.1M ($624K)
8 May 2025
Columns are written from public disclosures: House and Senate periodic transaction reports, SEC Form 4, Japan’s EDINET large-holding reports and Taiwan’s insider registers and market data (TWSE, TPEx, MOPS and the central bank, with history from FinMind). Stock pages add SEC 13F fund holdings and company financials, analysts’ figures from Financial Modeling Prep and Finnhub, and lobbying and federal contract records from the Senate and USAspending.gov. Amounts are disclosed as ranges, so the figures are estimates. Nothing here is investment advice.
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