5333 on Tokyo Stock Exchange

Ngk

Logo: NGK INSULATORS, LTD., CC BY 2.5, via Wikimedia Commons4

Japanese ceramics company

NGK Corporation (NGK株式会社) is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. NGK is headquartered in Tokyo (Marunouchi Bldg.2 Its shares trade on Tokyo Stock Exchange under the symbol 5333.1 Wikipedia text CC BY-SA 4.0

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Last updated Oct 21, 2026.

Overview

1919Founded1

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  • Ticker5333 on Tokyo Stock Exchange1
  • HeadquartersNagoya1
  • Websitewww.ngk.co.jp
  • Legal formkabushiki gaisha1
  • Listed onNagoya Stock Exchange (5333), Tokyo Stock Exchange (5333)1
  • LEI353800701BNCL25VYY163
  • StatusActive3
  • LEI statusIssued and current3
  • Registered address須田町2番56号, 467-8530 愛知県 名古屋市瑞穂区, Japan3
  • Registered withLegal Affairs Bureau, 1800-01-0108293
NGK Insulators LTD 03
Photo: CC BY-SA 3.0, via Wikimedia Commons5

NGK Corporation (NGK株式会社) is a Japanese ceramics company. It primarily produces insulators but also produces other products, especially ceramic products. NGK is headquartered in Tokyo (Marunouchi Bldg. 25F, 2-4-1, Marunouchi, Chiyoda-ku, Tokyo 100–6325) and is listed on the Nikkei 225, which is an index of the Tokyo Stock Exchange. It is also listed in the Osaka Securities Exchange, the Nagoya Stock Exchange, and the Sapporo Securities Exchange all under listing code 5333. NGK stands for Nippon (Japan) Gaishi (insulator) Kaisha (company). The company was established as a spin-off of the insulator manufacturing division of Nippon Toki (now Noritake) and was known as NGK Insulators, Ltd. (日本碍子株式会社, Nihon gaishi kabushikigaisha) from its founding in 1919 until 2026.2

Corporate structure

Ngk sits at the top of its group. 3 entities, 2 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

  • Ngk 愛知県 名古屋市瑞穂区, Japan
    • Insulator Museum Subsidiary · Komaki, Japan
    • NGK CERAMICS POLSKA SPOLKA Z OGRANICZONA ODPOWIEDZIALNOSCIA (NGK CERAMICS POLSKA SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ) Subsidiary · Gliwice, Poland

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Subsidiaries and ownership

Subsidiaries

  • Insulator Museum

From Wikidata.1

Timeline

  1. May 1949Went public Listed on Nagoya Stock Exchange1
  2. May 1949Went public Listed on Tokyo Stock Exchange1
  3. 1919Founded Founded1

Sources

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

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