
DN HOLDINGS CO., LTD. — Investor Relations & Filings
DN HOLDINGS CO., LTD. is a holding company primarily engaged in the construction consulting and geological survey sectors. Through its core group companies, which were formed by the integration of Dai Nippon Consultants and Dia Consultants, it provides comprehensive engineering services. These services include surveys, planning, design, and project management for social infrastructure such as bridges and roads. The company's expertise also extends to geological analysis and ground-related consulting. In addition to its foundational civil engineering work, DN HOLDINGS is actively involved in developing next-generation energy supply chains, advancing autonomous driving technology, and contributing to sustainable community development and historical resource preservation.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 子会社における臨時株主総会の延期(再招集)及び子会社における取締役候補者の選任の延期に関するお知らせ | 2026-04-21 | Japanese | |
| 子会社における取締役候補者の選任に関するお知らせ | 2026-04-16 | Japanese | |
| 有価証券届出書(組込方式) | 2025-10-21 | Japanese | |
| 確認書 | 2025-09-25 | Japanese | |
| 有価証券報告書-第4期(2024/07/01-2025/06/30) | 2025-09-25 | Japanese | |
| 確認書 | 2025-02-14 | Japanese |
Browse filings by year
6 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
2 filings
| |||||
| 46878108 | 子会社における臨時株主総会の延期(再招集)及び子会社における取締役候補者の選任の延期に関するお知らせ | 2026-04-21 | Japanese | ||
| 46877354 | 子会社における取締役候補者の選任に関するお知らせ | 2026-04-16 | Japanese | ||
|
2025
5 filings
| |||||
| 8033352 | 有価証券届出書(組込方式) | 2025-10-21 | Japanese | ||
| 7929109 | 確認書 | 2025-09-25 | Japanese | ||
| 7929108 | 有価証券報告書-第4期(2024/07/01-2025/06/30) | 2025-09-25 | Japanese | ||
| 7277218 | 確認書 | 2025-02-14 | Japanese | ||
| 7277213 | 半期報告書-第4期(2024/07/01-2025/06/30) | 2025-02-14 | Japanese | ||
|
2024
8 filings
| |||||
| 7293644 | 臨時報告書 | 2024-11-29 | Japanese | ||
| 7306776 | 臨時報告書 | 2024-09-30 | Japanese | ||
| 7306775 | 内部統制報告書-第3期(2023/07/01-2024/06/30) | 2024-09-30 | Japanese | ||
| 7306769 | 確認書 | 2024-09-30 | Japanese | ||
| 7306773 | 有価証券報告書-第3期(2023/07/01-2024/06/30) | 2024-09-30 | Japanese | ||
| 7309706 | 臨時報告書 | 2024-09-05 | Japanese | ||
| 7337460 | 確認書 | 2024-05-15 | Japanese | ||
| 7337458 | 四半期報告書-第3期第3四半期(2024/01/01-2024/03/31) | 2024-05-15 | Japanese | ||
Market data
Market data not available
Price history
Peer group · Architectural and engineering, and related technical consultancy activities
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
Aeroquest International Limited
Provided advanced airborne geophysical and geomatics survey…
|
AQL | CA | Professional, scientific and te… |
|
AFRY
An international engineering, design, and advisory company …
|
AFRY | SE | Professional, scientific and te… |
|
Airtificial Intelligence Structures S.A.
Designs and manufactures solutions for automotive, aeronaut…
|
AI | ES | Professional, scientific and te… |
|
Allied Sustainability and Environmental Consultants Group Limited
Sustainability and environmental consulting leveraging AI a…
|
8320 | HK | Professional, scientific and te… |
|
Alphageo (India)Ltd.
Provides seismic data acquisition and processing for upstre…
|
ALPHAGEO | IN | Professional, scientific and te… |
|
Alten
Global engineering and technology consultancy providing out…
|
ATE | FR | Professional, scientific and te… |
|
Amentum Holdings, Inc.
Provider of engineering and technology solutions for govern…
|
AMTM | US | Professional, scientific and te… |
|
Anhui Provincial Architectural Design and Research Institute Co.,Ltd.
Architectural design and engineering consultancy for integr…
|
301167 | CN | Professional, scientific and te… |
|
Anhui Transport Consulting & Design Institute Co.,Ltd.
Engineering consultancy for transport infrastructure design…
|
603357 | CN | Professional, scientific and te… |
|
Anlon Technology Solutions Limited
Provides engineering services, MRO support, and equipment f…
|
ANLON | IN | Professional, scientific and te… |
DN HOLDINGS 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/14396/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=14396 | 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=14396 | 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=14396 \ -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": 14396}, 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 DN HOLDINGS CO., LTD. (id: 14396)"
Report missing filing
Can't find a specific document? Let us know and we'll add it within 24 hours.