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China Oilfield Services Limited — Investor Relations & Filings

Ticker · 2883 ISIN · CNE1000002P4 HKEX Mining and quarrying
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Filings indexed 1,863 across all filing types
Latest filing 2026-05-22 Declaration of Voting R…
Country HK Hong Kong
Listing HKEX 2883

About China Oilfield Services Limited

http://www.cosl.com.cn

China Oilfield Services Limited (COSL) is a large-scale integrated oilfield service provider and the core services arm of the CNOOC Group. COSL offers comprehensive solutions spanning all phases of oil and gas exploration, development, and production, primarily focusing on the Asian offshore market. Its operations are divided into four major segments: geophysical services, drilling services, well services (including oilfield technology development and well testing), and marine support services. COSL utilizes a diverse fleet of assets, including jack-up, semi-submersible, and land drilling rigs, to deliver specialized technical solutions.

Recent filings

Filing Released Lang Actions
POLL RESULTS OF ANNUAL GENERAL MEETING AND H SHAREHOLDERS CLASS MEETING HELD ON 22 MAY 2026
Declaration of Voting Results & Voting Rights Announcements Classification · 92% confidence The document provides the detailed poll results of the Annual General Meeting and H Shareholders’ Class Meeting, listing each resolution and the votes for, against, and abstentions. This is an official declaration of voting results from a shareholder meeting, matching the definition of Declaration of Voting Results & Voting Rights Announcements (DVA).
2026-05-22 English
FINAL DIVIDEND FOR THE YEAR ENDED 31 DECEMBER 2025 (UPDATED)
Notice of Dividend Amount Classification · 92% confidence The document is an official announcement from China Oilfield Services Limited detailing the final dividend for the year ended 31 December 2025, including dividend amount, currency conversion, ex-dividend date, record date, payment date, and withholding tax information. This matches the definition of a Notice of Dividend Amount.
2026-05-22 English
An announcement has just been published by the issuer in the Chinese section of this website, a corresponding version of which may or may not be published in this section.
Regulatory Filings Classification · 30% confidence The document is an extremely short notice informing that the issuer’s announcement has been published in the Chinese section of the website, without any substantive financial data or specific report content. It serves as a general regulatory placeholder rather than the actual report or detailed announcement. This best fits the fallback category for miscellaneous regulatory announcements.
2026-05-20 English
Monthly Return of Equity Issuer on Movements in Securities for The Month Ended 30 April 2026
Regulatory Filings
2026-05-06 English
FINAL DIVIDEND FOR THE YEAR ENDED 31 DECEMBER 2025 (UPDATED)
Notice of Dividend Amount Classification · 100% confidence The document is titled 'Cash Dividend Announcement for Equity Issuer' and provides detailed information about the final dividend for the year ended 31 December 2025, including dividend amount, dates for shareholders' approval, ex-dividend date, record date, payment date, and share registrar details. It is an announcement specifically about dividend amounts and related shareholder information. The document length is 3645 characters, which is relatively short and focused solely on dividend details. There is no financial performance data, management discussion, or other report content. Therefore, this document fits the category of 'Notice of Dividend Amount' (DIV).
2026-04-29 English
Proxy Form for 2026 First H Shareholders Class Meeting
Proxy Solicitation & Information Statement Classification · 95% confidence The document is clearly a proxy form for the H Shareholders’ Class Meeting, providing shareholders with voting instructions and a proxy appointment form for resolutions (share buy-back mandates). It is part of materials sent to shareholders to solicit their votes at a meeting, matching the definition of a Proxy Solicitation & Information Statement (PSI).
2026-04-29 English

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