CNOOC Limited actively engages in public welfare and charity activities, and has implemented the “EMPOWER-Empowering communities, limitless acts of kindness” approach for community co-development. This approach is centered on supporting educational equity, improving medical support, protecting the natural ecosystem, fostering open communication, promoting people’s well-being, supporting emergency assistance efforts and contributing to rural revitalization. By adopting this strategy, CNOOC Limited aims to leverage its advantages and experience to drive community development.

The Company has formulated the Measures for the Administration of Charity and Public Welfare Undertaking of CNOOC Limited?to standardize related work in charity and public welfare. The Company has established the Charity and Public Welfare Committee to prepare the annual work plan for charity and public welfare, as well as donation budget approval. Besides, more than 300 management personnel has been assigned to oversee and coordinate charitable and public welfare initiatives. CNOOC Limited’s affiliated companies, harnessing their operational strengths and unique business traits, engage in diverse social welfare projects and volunteer activities, striving to create social value. In 2025, we invested a total of over RMB 134 million in external donations and public welfare projects.

Rural revitalization

CNOOC Limited actively responds to the national strategy for rural revitalization by integrating related initiatives into its overall development strategy. The Company continues to refine its rural revitalization framework and upholds the bottom line of preventing a return to poverty, guided by the principles of locally tailored policies, targeted implementation, consolidation of achievements, and advancement of revitalization. By studying and applying the best practices of the Green Rural Revival Program, the Company continuously enhances the quality of rural development, infrastructure development, and rural governance. During the year, the Company implemented 32 rural revitalization assistance projects to strengthen the self-driven development capacity in rural areas and promote the sustainable development of local economies.

In 2025, CNOOC Limited invested over RMB 74.68 million in rural revitalization, benefiting 10 counties and cities, nearly 6 million people.?The Company’s substantial investment and pragmatic actions in rural revitalization have earned strong recognition from beneficiary communities and widespread praise from society at large, demonstrating the Company’s image as a responsible and accountable central state-owned enterprise. Through sustained practice, CNOOC Limited has explored a long-term, sustainable enterprise–locality win-win mechanism, achieving the integrated realization of social and economic value.

Educational equity

CNOOC Limited has prioritized promoting educational equity as a key focus of public welfare initiatives. We have supported the improvement of learning conditions and educational quality in underdeveloped areas to promote educational equity through various initiatives such as sponsoring education, improving school facilities, fostering ethnic cultural education, and conducting skill training programs.

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Medical support

CNOOC Limited supports the healthcare sector through multiple channels, and works to enhance regional healthcare capacity and public health outcomes. ?The Company contributes to the development of public health systems and the improvement of community well-being. Domestically, CNOOC Limited continues to strengthen primary healthcare capacity, promote the equitable distribution of medical resources, and advance health education initiatives. The Company actively supports improvements in medical conditions and the training of healthcare professionals in underdeveloped areas, extending medical services to remote and disadvantaged regions to enhance communities' sense of health security and well-being. In its overseas operations, CNOOC Limited closely monitors the healthcare needs of host communities and implements locally tailored initiatives, including basic medical assistance, healthcare facility upgrades, and health awareness campaigns. These efforts help improve public health standards, enhance community well-being, and reinforce the Company’s image as a responsible global enterprise.

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Proactive preservation

CNOOC Limited adheres to green development principles and integrates ecological and environmental protection throughout its entire corporate development process. The Company continues to advance ecological restoration, environmental governance, and green operations through green well site renovation, on-site afforestation, and Yellow River pollution control, exploring a development path of harmonious coexistence between humanity and nature.

Open communication

The Company fully respects the customs and cultural traditions of local residents, stands firmly committed to respecting, safeguarding, and promoting human rights, and places significant emphasis on ecological and environmental preservation. We pledge not to operate within protected areas and strive to minimize the adverse impacts of our operations on local communities. Following the principle of Free, Prior and Informed Consent (FPIC), we actively engage in community outreach, cooperate with local governments, NGOs, community representatives, etc., and establish diversified communication channels. We fully understand the opinions and suggestions of local residents on the Company’s production and construction activities through conversations, complaint resolution procedures, and community impact management measures. The Company assesses the impact of projects on the community in a timely manner and identifies community-related potential risks and opportunities.

CNOOC Limited strictly follows and enforces the requirements of relevant laws and regulations in the countries and regions of operation. The Company conducts thorough community impact assessment of the whole life cycle of the project and continues to improve pre-project planning, operation monitoring of project construction, and post-completion restoration and compensation, so as to reduce the impact on the local community.

Before the project starts, through hearings with local governments, non-governmental organizations, and residents, the Company discusses project social impact assessment results and addresses questions from stakeholders to secure community approval before commencing field development.

During the process of project development and cooperation, the Company ensures that the information about the project is highly transparent, and the will and choice of local residents are fully respected. We present the investment plan in detail to residents to ensure that residents can make sufficiently informed decisions, thus protecting their rights and interests. The actions taken include the following:

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After the completion of the project, the Company organizes a comprehensive clean-up of the construction area and carries out environmental restoration to ensure that the local ecosystem and landscape is effectively rehabilitated. At the same time, we conduct post-project environmental monitoring and evaluation, with environmental data regularly disclosed to the community to safeguard its right to information and supervision. On this basis, the Company continues to strengthen communication and collaboration with surrounding communities, supports local public welfare initiatives, and contributes to the sustainable development of the community.

Well-being Promotion

CNOOC Limited actively provides technical and financial support, donates materials, and engages in infrastructure construction and upgrades for the communities to enhance the well-being of local residents. Meanwhile, the Company focuses on effectively improving the employability and quality of life for local residents to contribute to community development. Domestically, we integrate our development with well-being promotion, implementing various measures to effectively boost local residents’ living standards and happiness. In 2025, CNOOC Limited fully fulfilled its social responsibilities as a Hong Kong–listed central SOE. Following the fire incident in Tai Po, Hong Kong, the Company promptly donated HK$10 million as a dedicated emergency relief fund to support the affected residents in temporary resettlement, basic living assistance, and post-disaster reconstruction, helping the community restore normal living order as soon as possible. Overseas, prioritizes engaging in community building at its overseas operation areas, actively shouldering the social responsibility of enhancing local livelihoods and promoting harmonious community growth. The CNOOC Corporate Community Investment Committee (CCIC) has released the?CNOOC International Limited Standard for Community Investment, developing annual community strategic investment budget plans to support local livelihood projects.

Emergency assistance

CNOOC Limited upholds the principle of "life first" and regards supporting emergency rescue as a critical area for fulfilling social responsibilities. Through diverse initiatives including maritime rescue, emergency disaster relief, financial assistance, and safety education, the Company effectively protects people's lives and property, demonstrating its commitment to working with communities to build strong safety defenses.

Guided by the Maritime Emergency Response Capabilities Enhancement Plan (2022-2025), the Company is advancing the development of emergency support forces from multiple dimensions. A comprehensive, integrated approach has been established in the enhancement of maritime emergency response capabilities. The Company initially forms a regionally coordinated, multi-tiered, and highly efficient emergency support system with clearly defined responsibilities..

In accordance with the fundamental principles of "people first, prompt response, and effective rescue," and the requirements of the Inter-Ministerial Joint Conference System for National Maritime Search and Rescue and Major Maritime Oil Spill Emergency Response, the Company has formulated the Emergency Management Measures to standardize emergency preparedness and response mechanisms. Leveraging its industry strengths in rapid offshore response and integrated aerial rescue, the Company mobilizes its own resources, large-scale equipment, and facilities to provide external emergency assistance. It also conducts coordinated emergency response actions with maritime search and rescue centers at all levels, actively participating in maritime rescue operations and contributing to the enhancement of national maritime emergency response capabilities. During the reporting period, CNOOC Limited participated in maritime rescue for 54 times, mobilized 75 vessels and 9 helicopters, and rescued 22 ships and 112 people in distress. Our activities gained recognition 23 times.

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CNOOC Limited actively supports the development of local emergency rescue capabilities overseas through various means, including funding volunteer fire brigades, conducting fire safety publicity, and donating emergency equipment, helping to improve community disaster prevention, mitigation, and emergency response capabilities.