Judge Blocks Oklahoma Proxy Advisor Law

A federal judge temporarily halted an Oklahoma law restricting proxy advisory firms that recommend votes against company management.

Updated on Nov. 9, 2026 in Public Companies

Federal Judge Patrick Wyrick granted a preliminary injunction blocking Oklahoma House Bill 4429, which restricts shareholder proxy advisory firms that recommend votes against company management. The order was issued Oct. 31, one day before the law was set to take effect.

Why it matters

The ruling is the latest in a series of federal decisions temporarily blocking similar proxy advisor laws, underscoring legal challenges to state efforts to regulate shareholder advice. The case was brought on First Amendment grounds by Institutional Shareholder Services Inc. and Glass Lewis & Co. LLC.

Federal judges in three other states, Kansas, Indiana and Texas, have temporarily blocked comparable proxy advisor laws, and Judge Wyrick's order came one day before Oklahoma's law was set to take effect. The order does not resolve the underlying merits of the case.

The players

Patrick Wyrick

A federal judge who issued the preliminary injunction blocking Oklahoma House Bill 4429 and wrote that the law is viewpoint discriminatory.

Institutional Shareholder Services Inc.

A major proxy advisory firm that won the preliminary injunction against the Oklahoma law and said the ruling aligned with similar decisions in Kansas, Indiana and Texas.

Glass Lewis & Co. LLC

A proxy advisory firm that was granted the preliminary injunction alongside Institutional Shareholder Services against the Oklahoma law.

Gentner Drummond

The Oklahoma Attorney General whose office declined to comment on the preliminary injunction and had argued the law did not address ESG shareholder resolutions.

The details

Judge Wyrick wrote that the law is viewpoint discriminatory because it imposes extra requirements on proxy advice opposing company management while placing no restrictions on advice aligned with management. He rejected the Oklahoma Attorney General's office's argument that the requirements did not address support or opposition to environmental, social and governance shareholder resolutions. The attorney general's office declined to comment.

Oct. 30: Prospr Aligned CEO filed public comment on an SEC proposal concerning proxy processes.
Oct. 31: Judge Wyrick issued the preliminary injunction order, one day before the law's effective date.
Nov. 5: The Council of Institutional Investors filed public comment on the SEC proposal.
2028 proxy season: Earliest possible application of any SEC rule change, if approved.

Market Landscape

Federal courts in Kansas, Indiana and Texas have already temporarily blocked state versions of the Proxy Advisor Transparency Act, and Oklahoma's ruling extends that pattern. The rulings come as the SEC takes public comment on a rule change that could limit shareholder proposals in the proxy process.

Because the Oklahoma law was blocked before taking effect, companies and shareholders in the state do not face new proxy advisor restrictions for now. Any SEC rule changes, if approved, would not apply until the 2028 proxy season.

The takeaway

Shareholders and public companies should watch both the pending Oklahoma litigation and the SEC proxy rulemaking, since the outcomes could shape how proxy advice is regulated. Federal courts have so far been skeptical of state laws that single out advice opposing management.