RIBBON COMMUNICATIONS INC. (RBBN) Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets

RIBBON COMMUNICATIONS INC. Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets

RIBBON COMMUNICATIONS INC. (RBBN) reported Defined Benefit Plan, Assumptions Used Calculating Net Periodic Benefit Cost, Expected Long-term Rate of Return on Plan Assets of 3.80% for the 12-month period ending 2025-12-31, per its 10-K filed 2026-02-26.

Financial Statements › Expense Statement › Operating Expenses

us-gaap:DefinedBenefitPlanAssumptionsUsedCalculatingNetPeriodicBenefitCostExpectedLongTermReturnOnAssets · last filed 2026-02-26

• RIBBON COMMUNICATIONS INC. defined benefit plan, assumptions used calculating net periodic benefit cost, expected long-term rate of return on plan assets for fiscal 2025 was 3.80%, a 9.31% decline from fiscal 2024.
• RIBBON COMMUNICATIONS INC. defined benefit plan, assumptions used calculating net periodic benefit cost, expected long-term rate of return on plan assets for fiscal 2024 was 4.19%, a 3.46% decline from fiscal 2023.
• RIBBON COMMUNICATIONS INC. defined benefit plan, assumptions used calculating net periodic benefit cost, expected long-term rate of return on plan assets for fiscal 2023 was 4.34%, a 142.46% increase from fiscal 2022.
• RIBBON COMMUNICATIONS INC. defined benefit plan, assumptions used calculating net periodic benefit cost, expected long-term rate of return on plan assets for fiscal 2022 was 1.79%, a 13.11% decline from fiscal 2021.