Corporate Governance

WHA Corporation Public Company Limited realizes the significance of sustainable business operations and thus adhere to and comply with the principles of good corporate governance, in the hope of ensuring its business prosperity and stability in the long run, giving rise to efficiency and effectiveness, promoting transparency, so as to earn trust and generate benefits to all stakeholders concerned.

In order to comply with and conform to the Corporate Governance Code for Listed Companies 2017 of the Securities and Exchange Commission, good practices of the Stock Exchange of Thailand, the Organization for Economic Co-operation and Development (OECD) Principles of Corporate Governance and the ASEAN Corporate Governance Scorecard, the Board of Directors has established the “Corporate Governance Policy” as the key practices to support the creation of values to the business and lead to good corporate governance culture in the group companies in a sustainable manner accordingly.

Overview of Corporate Governance Policies and Practices

Principle 1 Role and Responsibilities of the Board as Corporate Leader to Sustainably Create Values to the Business

Principle 2 Definition of Objectives and Main Goals of the Business for Sustainability

Principle 3 Strengthening of the Effectiveness of the Board of Directors

Principle 4 Nomination and Development of High-Ranking Executives and Personnel Management

Principle 5 Promotion of Innovation and Responsible Business Operations

Principle 6 Effective Risk Management and Internal Control Systems

Principle 7 Financial Integrity and Disclosure

Principle 8 Shareholders’ Engagement and Communications

The Company has strictly adhered to comply with the principles of good corporate governance in accordance with widely recognized practices at both national and international levels. As a result, the Company has gained broad recognition and has consistently received awards from various organizations. The key achievements in 2025 can be summarized as follows:

• The Company has been assessed under the Corporate Governance Report of Thai Listed Companies (CGR) which conducted by the Thai Institute of Directors (IOD) and has received an “Excellent” rating (5 stars) eight consecutive years.
• The Company has been ranked among the Top 50 ASEAN Public Listed Companies, which selected from high market capitalization listed companies across the ASEAN region, under the ASEAN Corporate Governance Scorecard (ACGS) assessment.
• The Company has received a full score of 100 points in Annual General Meeting of Shareholders (AGM) Checklist Assessment conducted by the Thai Investors Association for fourth consecutive years.
• The Company has been ranked one company among the ESG100 companies by Thaipat Institute for three consecutive years.
• The Company has received a SET ESG Ratings (formally known as THSI assessment) at the AAA level for three consecutive years.
• The Company has renewed its certification as a member of the Thai Private Sector Collective Action Against Corruption (CAC Re-certification) for the first time in 2020 and for the second time in 2023 (effective from 30 June 2023), with each certification valid for a period of three years.