
Niterra Co., Ltd. — Investor Relations & Filings
Niterra Co., Ltd., formerly NGK Spark Plug Co., Ltd., is a global manufacturer specializing in technical ceramics. The company's core business is in the automotive sector, where it is renowned for its NGK brand of ignition parts, including spark plugs, and its NTK brand of vehicle electronics and sensors, serving both original equipment and aftermarket customers. Leveraging its ceramics expertise, Niterra has diversified its portfolio to include semiconductor-related parts such as packages and manufacturing equipment components, medical equipment like oxygen concentrators, and industrial ceramic parts, including piezoelectric ceramics and bearing balls.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-05-08 | Japanese | |
| 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-04-03 | Japanese | |
| 発行登録書(株券、社債券等) | 2026-03-10 | Japanese | |
| 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-03-04 | Japanese | |
| 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-02-04 | Japanese | |
| 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-01-07 | Japanese |
Browse filings by year
12 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
6 filings
| |||||
| 44129335 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-05-08 | Japanese | ||
| 33244035 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-04-03 | Japanese | ||
| 32920204 | 発行登録書(株券、社債券等) | 2026-03-10 | Japanese | ||
| 32874643 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-03-04 | Japanese | ||
| 14174243 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-02-04 | Japanese | ||
| 12194350 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2026-01-07 | Japanese | ||
|
2025
9 filings
| |||||
| 9129897 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2025-12-03 | Japanese | ||
| 8128166 | 確認書 | 2025-11-07 | Japanese | ||
| 8128142 | 半期報告書-第126期(2025/04/01-2026/03/31) | 2025-11-07 | Japanese | ||
| 8100623 | 自己株券買付状況報告書(法24条の6第1項に基づくもの) | 2025-11-05 | Japanese | ||
| 7251279 | 臨時報告書 | 2025-06-25 | Japanese | ||
| 7253271 | 確認書 | 2025-06-24 | Japanese | ||
| 7253264 | 内部統制報告書-第125期(2024/04/01-2025/03/31) | 2025-06-24 | Japanese | ||
| 7253262 | 有価証券報告書-第125期(2024/04/01-2025/03/31) | 2025-06-24 | Japanese | ||
| 7265669 | 臨時報告書 | 2025-04-30 | Japanese | ||
Market data
Market data not available
Price history
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Niterra Co., Ltd. via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/11484/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=11484 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=11484 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=11484 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 11484}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for Niterra Co., Ltd. (id: 11484)"
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