Ribbon Communications Inc. 8-K

What Happened

• Ribbon Communications (RBBN) filed an 8‑K (Items 2.02 and 5.02) on April 28, 2026 announcing preliminary results of operations and that Executive Vice President & CFO John Townsend will resign effective April 30, 2026.
• The company promoted Eric “Rick” Marmurek to Executive Vice President, Chief Financial Officer and Chief Accounting Officer effective May 1, 2026. A press release about preliminary financial results and a separate release on Marmurek’s appointment were furnished as exhibits.

Key Details

• John Townsend’s resignation is effective April 30, 2026 and is not due to any disagreement with the company on operations, policies or practices.
• Eric “Rick” Marmurek (age 60) has been with Ribbon and predecessor companies for more than 15 years and has over 35 years of financial experience; he is a CPA.
• Marmurek’s 2026 annual compensation: base salary $475,000, target bonus 75% of base salary, and eligibility for annual equity grants (subject to company review and policies).
• No related-party arrangements or family relationships were reported in connection with the appointment.

Why It Matters

• A CFO change is material for investors because the finance leader runs reporting, forecasting and investor communications. Ribbon indicates a planned, internal transition (no disagreement cited), which suggests operational continuity.
• The company also disclosed preliminary financial results (see the April 28 press release) — investors should read that press release for the latest revenue/earnings signals and watch for the formal SEC filings (quarterly/annual reports) for finalized numbers.