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Private company

Z-Kai Group

Z-Kai Group is a Japanese company based in Shizuoka Prefecture, founded in 2015.1

株式会社Z会ホールディングス（ゼットかいホールディングス、英: Z-kai Holdings Inc.）は静岡県三島市に本社を置き、「栄光ゼミナール」などをはじめとした、学習塾事業・家庭教師派遣事業を傘下に持つ持株会社。増進会ホールディングスの連結子会社（中間持株会社）。2 From the Japanese Wikipedia, CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

May 7, 2015Founded1

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Corporate structure

Z-Kai Group sits at the top of its group. 2 entities, 1 country on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Z-Kai Group Shizuoka Prefecture, Japan
    • Eikoh Subsidiary · Chiyoda, Japan

Built from subsidiaries, stakes and holdings from Wikidata (CC0); major holders from Schedules 13D and 13G. Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

From Wikidata.1

Timeline

  1. May 7, 2015Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

  1. 1
  2. 2