Ribbon Communications Inc. 10-K

Item 7A. Quantitative and Qualitative Disclosures About Market Risk We are exposed to market risk related to changes in interest rates and foreign currency exchange rates. The following discussion about these market risks includes forward-looking statements. Actual results could differ materially from those projected in these forward-looking statements. At December 31, 2025, we had outstanding debt totaling $342.1 million. A hypothetical movement of plus or minus 50 basis points in the interest rate of our outstanding debt would have changed our interest expense by approximately $2 million for the year ended December 31, 2025. As a global company operating in more than 30 countries, a significant portion of our revenues and expenses are denominated in currencies other than the U.S. Dollar. If the U.S. Dollar strengthens against these other currencies, our revenue for these transactions reported in U.S. Dollars would decline and our non-U.S. Dollar expenses would be inversely impacted, resulting in lower U.S. Dollar expenses. A hypothetical 10% strengthening of the U.S. Dollar would have negatively impacted our revenues for the year ended December 31, 2025 by approximately $20 million. Because a higher proportion of our expenses are denominated in foreign currencies compared to our revenue, our net loss for the year ended December 31, 2025 would have been positively impacted by approximately $32 million. ​ 59 ​