Energy Recovery, Inc. 8-K

What Happened Energy Recovery, Inc. (ERII) filed an 8-K reporting that President and CEO David Moon accelerated his previously announced retirement and resigned from all Company positions effective May 26, 2026. The filing states Mr. Moon’s decision was not due to any disagreement with Company management or the Board. On May 26, 2026 the Board appointed director Alex Buehler (age 51) as Interim President and Chief Executive Officer while a permanent successor is sought.

Key Details

• David Moon resigned effective May 26, 2026; resignation was not related to any disagreement with management or the Board.
• Alex Buehler named Interim CEO on May 26, 2026; he will remain on the Board but will step down from the Compensation and Audit Committees. Arve Hanstveit was appointed Audit Committee Chair.
• Buehler’s background: Energy Recovery CFO (2011–2014), Board member since 2015; recent CEO roles include Integrated Water Services (Oct 2022–Oct 2025) and other executive positions. Education: B.S. civil engineering (USMA West Point) and MBA (Wharton).
• Compensation for Mr. Buehler’s interim role has not been determined; the Compensation Committee will set terms and the Company will amend the 8-K to disclose material terms. The filing reports no family relationships or related-party transactions involving Mr. Buehler.

Why It Matters A CEO departure and interim appointment are material governance events that can affect company strategy, execution and investor perception. Appointing an experienced insider and longtime director as interim CEO suggests continuity in leadership and industry knowledge. Investors should note the pending disclosure of interim CEO compensation and the Board’s committee changes (new Audit Committee Chair), which are relevant to governance and future disclosures.