US regulator sues ISS as it steps up scrutiny of proxy advisers
The SEC accuses the firm of ignoring a subpoena as part of its ‘fact-finding investigation’
The U.S. regulator has filed a lawsuit against Institutional Shareholder Services (ISS), signaling a heightened focus on the conduct of proxy advisers that counsel institutional investors on corporate voting matters. The legal action, reported on September 5, 2026, follows a series of regulatory initiatives aimed at improving transparency and accountability within the proxy‑advice sector.
Regulatory Action
The complaint alleges that ISS may have fallen short of standards that the regulator expects from firms that influence shareholder votes on issues such as board composition, executive pay and shareholder proposals. By moving to court, the regulator is seeking to enforce stricter compliance and to deter practices that could undermine the integrity of corporate governance processes.
Role of Proxy Advisers
Proxy advisers like ISS serve as intermediaries between corporations and large investors, offering recommendations on how to cast votes at annual meetings. Their analyses can sway the outcome of key decisions, making the accuracy and independence of their advice a matter of public interest. Because institutional investors often rely on these services to manage millions of votes, any perceived bias or error can have material effects on company policy and market perception.
Industry Context
The lawsuit arrives amid broader scrutiny of the proxy‑advice industry by U.S. authorities. In recent years, the regulator has issued guidance on conflict‑of‑interest disclosures and has examined the methodologies firms use to formulate voting recommendations. Past investigations have highlighted concerns about opaque fee structures and the potential for advisory firms to favor certain issuers. While the current filing does not disclose specific violations, it underscores the regulator’s intent to apply legal pressure where it believes standards have been breached.
Potential Implications
If the court rules in favor of the regulator, ISS could be required to modify its advisory processes, enhance disclosure practices, or face monetary penalties. Such outcomes would likely prompt other proxy advisers to reassess their own compliance frameworks to avoid similar legal exposure. Investors might also adjust their reliance on external advice, opting for greater internal analysis or seeking alternative providers.
Looking Ahead
The case is expected to draw attention from corporate boards, shareholder groups and legal experts who monitor governance reforms. Observers anticipate that the regulator’s move could set precedents for future enforcement actions, potentially reshaping how proxy advisers operate across the United States. As the litigation proceeds, stakeholders will watch closely for any court‑ordered changes that could influence voting behavior and the broader dynamics of shareholder activism.
Source: ft.com · 2026-09-05