
OBAYASHI CORPORATION — Investor Relations & Filings
Obayashi Corporation is a global construction and engineering firm providing a comprehensive suite of services. The company's core activities include building construction, civil engineering, and real estate development. Its project portfolio spans large-scale infrastructure, urban and regional development, and the construction of commercial, industrial, and residential facilities. Obayashi also focuses on providing advanced engineering solutions, developing new technologies, and promoting sustainability across its domestic and international operations. The firm manages the entire project lifecycle, from planning and design to construction and maintenance.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 訂正発行登録書 | 2026-05-15 | Japanese | |
| 臨時報告書 | 2026-05-14 | Japanese | |
| 訂正発行登録書 | 2026-03-11 | 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 | |
| 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) | 2025-12-10 | 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) | 2025-11-10 | Japanese |
Browse filings by year
12 years| ID | Filing | Released | Lang | Actions | |
|---|---|---|---|---|---|
|
2026
4 filings
| |||||
| 46349097 | 訂正発行登録書 | 2026-05-15 | Japanese | ||
| 45774532 | 臨時報告書 | 2026-05-14 | Japanese | ||
| 32926938 | 訂正発行登録書 | 2026-03-11 | Japanese | ||
| 12193844 | 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
11 filings
| |||||
| 9740973 | 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) | 2025-12-10 | Japanese | ||
| 8161988 | 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) | 2025-11-10 | Japanese | ||
| 8116512 | 確認書 | 2025-11-06 | Japanese | ||
| 8116508 | 半期報告書-第122期(2025/04/01-2026/03/31) | 2025-11-06 | Japanese | ||
| 7982505 | 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) | 2025-10-10 | Japanese | ||
| 7856030 | 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) | 2025-09-10 | Japanese | ||
| 7241591 | 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) | 2025-07-02 | Japanese | ||
| 7243208 | 訂正発行登録書 | 2025-06-30 | Japanese | ||
| 7243139 | 臨時報告書 | 2025-06-30 | Japanese | ||
| 7257435 | 内部統制報告書-第121期(2024/04/01-2025/03/31) | 2025-06-19 | Japanese | ||
| 7257434 | 確認書 | 2025-06-19 | Japanese | ||
Market data
Market data not available
Price history
Peer group · Construction of residential and non-residential buildings
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Capacit'e Infraprojects Limited
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Capelli
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CAPITAL WORLD LIMITED.
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OBAYASHI CORPORATION 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/10905/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=10905 | 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=10905 | 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=10905 \ -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": 10905}, 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 OBAYASHI CORPORATION (id: 10905)"
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