Transaction Details

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.16 to $4.165, inclusive. The reporting person undertakes to provide to Ribbon Communications, any security holder of Ribbon Communications, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price with the ranges set forth in this footnote. | The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.965 to $4.160, inclusive. The reporting person undertakes to provide to Ribbon Communications, any security holder of Ribbon Communications, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price with the ranges set forth in this footnote.