ClearSign Technologies Corporation held its 2026 annual meeting of stockholders on June 8, 2026. Stockholders elected four directors, approved the appointment of BPM CPA LLP as the independent registered public accounting firm, and approved the amended and restated 2021 Equity Incentive Plan. They also approved the executive compensation on an advisory basis and the proposal to allow meeting adjournments. The company provides scale-free wastewater treatment solutions for industrial and water utilities.