How corporate governance reform reshapes the relationship between the audit committee chair and ESG disclosure

Introduction: The Co-evolution of ESG Disclosure and Corporate Governance

In global capital markets, environmental, social, and governance (ESG) disclosure has evolved from a voluntary corporate practice to a regulatory imperative. Investors are not only concerned with financial performance but also demand that companies transparently demonstrate their commitment to sustainable development. However, emerging markets face challenges such as weak institutions and poor enforcement when advancing ESG disclosure, making the effectiveness of governance mechanisms a critical variable. As the core oversight body for both financial and non-financial reporting, the audit committee's chair leadership directly affects disclosure quality.

Audit Committee Chair: The Gatekeeper of ESG Governance

The independence, professional experience, and external connections of the audit committee chair are three key characteristics that determine oversight effectiveness. Independence ensures the chair is free from management interference, enabling objective assessment of disclosure completeness; financial or industry experience helps identify gaps in ESG data; while interlocking directorates (the same person serving as a director for multiple companies) may dilute focus and create conflicts of interest, thereby undermining oversight independence.

Saudi Reform: From "Governance Form" to "Governance Substance"

The Vision 2030 reform framework launched by Saudi Arabia in 2017 not only promotes economic diversification but also systematically restructures corporate governance rules. The new regulations emphasize board independence, the boundaries of audit committee responsibilities, and information disclosure standards, providing a unique context for studying how policy shapes micro-level governance behavior.

Empirical Findings: Amplification and Buffering Effects of the Institutional Environment

• Based on data from 243 listed Saudi companies between 2014 and 2023, the study finds:
• Independent chairs and experienced chairs significantly improve ESG disclosure scores, indicating that objectivity and professional competence are the cornerstones of high-quality disclosure.
• Interlocking chairs significantly reduce disclosure transparency, reflecting the governance costs of resource dispersion.
• Vision 2030 reform, as a moderating variable, amplifies the positive effects of independence and experience, while significantly curbing the negative impact of interlocking directorates. This means that well-designed institutions can magnify advantages and mitigate disadvantages.

Strategic Implications: The Governance Advancement Path for Emerging Market Companies

For companies, appointing an audit committee chair who is independent and has ESG-related experience is a short-term measure to enhance disclosure credibility; in the long term, it must be accompanied by institutional changes, such as reducing multiple directorships and establishing ESG-specific training. For policymakers, mandatory governance reforms (like the Saudi model) can quickly establish a market-wide benchmark, but they need to be supplemented with enforcement oversight.

Conclusion: Governance Reform as an Accelerator for ESG Disclosure

In an era where ESG has become the global business language, emerging market companies aiming to win the trust of international capital must move beyond compliance-driven disclosure toward governance-driven approaches. The Saudi experience shows that corporate governance reform can not only directly improve disclosure quality but also optimize micro-level governance mechanisms—this is the key step from being a "follower" to a "leader."