Commercial Act Amendments Taking Effect in 2026: Governance Checklist

Korea’s corporate governance reforms are entering a new phase. Amendments to the Commercial Act promulgated in 2025 are scheduled to take effect in 2026, with direct consequences for board decision‑making, audit committee elections, and shareholder oversight. For foreign investors and multinational subsidiaries, these changes affect both compliance and engagement strategy.

A practical example: a foreign parent company controls a Korean listed subsidiary and routinely appoints directors. Under the 2026 reforms, the rules for electing audit committee members tighten, and directors may face a more explicit duty to consider shareholder interests. That changes how boards plan governance, how controlling shareholders vote, and how investors assess risk.

This article explains the 2026 Commercial Act amendments in plain English, highlights the most important legal provisions, and provides an action checklist for foreign investors and companies operating in Korea.

1) Why these amendments matter now

Korea has long faced a “governance discount” in public markets, driven by concentrated ownership and limited minority shareholder influence. The government’s reform agenda aims to improve transparency and balance control with accountability.

The 2026 amendments directly address:

• Audit committee election mechanics
• Independence of outside directors
• Director duties and accountability

These changes are designed to strengthen board oversight and protect minority shareholders, which is a central theme for global institutional investors.

2) Audit committee election: the 3% rule tightening

The Commercial Act contains special rules for electing audit committee members in listed companies. Under Article 542-12 of the Commercial Act, voting rights of large shareholders are capped for audit committee elections (commonly referred to as the “3% rule”).

The 2026 amendments expand and unify the 3% cap so that controlling shareholders and persons acting in concert cannot bypass the cap by spreading holdings across affiliates. This is consistent with the policy rationale expressed in the legislative amendments and aligned with the Commercial Act’s governance reform goals.

Practical impact: Controlling shareholders may need to negotiate with other investors or refine board structure to secure audit committee seats. Foreign investors with significant stakes should reassess their voting strategy and proxy advisory guidance.

3) Director duties and shareholder interests

Korean directors owe duties of loyalty and care to the company under Article 382-3 of the Commercial Act. The 2026 reforms emphasize that directors should also consider shareholder interests, reinforcing accountability for decisions that may disadvantage minority investors.

This does not convert the duty into a direct obligation to every shareholder, but it does increase litigation risk when boards approve transactions that shift value to controlling parties. For foreign investors, this change strengthens the legal basis for challenging conflicted transactions and supports more robust engagement on related‑party deals.

4) Outside director independence and board composition

The Commercial Act and the Capital Markets Act already contain independence requirements for outside directors at listed companies. The 2026 reforms reinforce these standards and tighten election procedures for audit committee members who are outside directors.

Investors should review:

• The ratio of outside directors to inside directors
• Tenure and independence assessments
• Audit committee composition and chair independence

For subsidiaries of foreign parents, it is especially important to demonstrate credible independence if the company seeks to attract foreign capital or list in the future.

5) Disclosure and voting implications

Audit committee elections and governance reforms also intersect with disclosure obligations under the Capital Markets Act, including business report disclosures and material event reporting. This makes governance changes more visible to the market and may affect share price reaction.

Global investors should align these changes with their stewardship policies. Proxy voting guidelines should be updated to account for the tighter 3% rule and the enhanced role of outside directors.

6) Timeline and transitional planning

Although the amendments take effect in 2026, board governance changes should be planned well in advance. Many listed companies set board agendas and committee appointments months before the annual general meeting. If the audit committee election rules change, the company needs a practical transition plan, including revisions to internal bylaws and shareholder communication materials.

For foreign-controlled subsidiaries considering a local listing or external financing, 2026 becomes a key compliance milestone. Early alignment improves investor confidence and reduces the risk of governance‑related discounting.

Companies should also update internal training for directors and senior officers so they understand the new governance expectations before the first AGM under the revised rules. This reduces execution risk during board deliberations.

7) Example: controlling shareholder vote dilution

Assume a foreign parent controls 55% of a Korean listed subsidiary. Under the tightened 3% rule, the parent’s voting power for audit committee members is capped at 3%, even if it controls a majority of the company. That means the parent must coordinate with other shareholders or accept a more independent audit committee composition.

This is not just a procedural change. It affects audit oversight, related‑party transaction review, and the overall governance optics of the company. Foreign investors should consider whether additional independent directors or governance committees are needed to maintain credibility.

8) Cross‑border governance alignment

Global groups often apply a single governance policy across jurisdictions. Korea’s 2026 reforms may require local customization. For example:

• Global group policies on board composition may need revision to meet Korean audit committee election rules
• Related‑party transaction approvals may need more formal documentation under Korean standards
• Shareholder communication strategies should reflect the stronger role of minority investors

9) Litigation and enforcement risk

Governance reforms often translate into litigation risk, especially when minority shareholders suspect conflicts of interest. As director duties become more explicitly connected to shareholder interests, plaintiffs may rely on Commercial Act Article 382-3 to challenge board decisions. This is particularly relevant in related‑party transactions, asset transfers, or squeeze‑out scenarios.

For foreign investors, the practical implication is that process matters as much as outcome. Board minutes, fairness opinions, and audit committee review documentation can become key evidence if a dispute arises.

This also intersects with insurance and indemnification. Directors and officers (D&O) insurance coverage, indemnity agreements, and internal investigation protocols should be reviewed to ensure they align with the heightened scrutiny environment.

10) Audit committee practice upgrades

Beyond election mechanics, investors will expect substantive audit committee oversight. Companies should review how the audit committee operates in practice:

• Frequency and agenda quality of audit committee meetings
• Independence and expertise of committee members
• Access to external auditors without management interference
• Review protocols for related‑party transactions and internal controls

These operational details are increasingly visible in due diligence and can influence valuation, especially for companies seeking foreign capital.

Another practical step is to upgrade AGM communication. Shareholders are more likely to scrutinize governance disclosures and ask pointed questions about audit committee independence, related‑party transactions, and board evaluation processes. Preparing clear AGM scripts and disclosure Q&A material reduces the risk of awkward public disputes. It also signals a proactive governance culture to global investors.

11) Action checklist for foreign investors and companies

To prepare for the 2026 amendments, consider the following steps:

• Review shareholder structure: identify whether the 3% rule will affect audit committee elections
• Update board governance policies: clarify director duties, conflict procedures, and shareholder engagement protocols
• Enhance disclosure: ensure business reports accurately describe audit committee election procedures
• Plan for shareholder engagement: anticipate questions from institutional investors and proxy advisors
• Align subsidiary governance: if a foreign parent controls a Korean entity, ensure local governance is not a box‑ticking exercise

Practical tips / key takeaways

• The 3% rule is tightening: controlling shareholders must plan for audit committee elections under a stricter cap.
• Director duties are under sharper scrutiny: decisions with related‑party risk should be documented carefully.
• Governance disclosure matters: investors will evaluate transparency as part of valuation.
• Act early: governance changes take time to implement before the effective date.

Conclusion

The 2026 Commercial Act amendments are not just legal fine print—they reshape how boards and shareholders interact in Korean listed companies. Foreign investors should treat this as a strategic governance shift, not a compliance checkbox. The earlier you align board practices and voting strategies, the more effectively you can manage risk and influence outcomes.

For multinational groups, the reforms are also a signal: Korea expects governance to be transparent, documented, and responsive to minority shareholders. Companies that embrace these standards are likely to benefit from stronger investor confidence and improved market perception, particularly when raising capital or pursuing strategic partnerships.

Korea Business Hub advises foreign investors and multinational companies on governance reforms, shareholder engagement, and compliance planning. We also help align bylaws, charters, and internal policies to the new rules. If you need a practical roadmap for the 2026 amendments, we can help you translate statutory changes into actionable governance upgrades.