X0206 3 2017-10-27 0 0001708055 Sonus Networks, Inc. SONS 0001615890 Riley Kevin W. C/O SONUS NETWORKS, INC. 4 TECHNOLOGY PARK DRIVE WESTFORD MA 01886 0 1 0 0 CTO & EVP Growth R&D Common Stock 205154 D Performance-Based Restricted Stock Units (PSUs) 0 Common Stock 2917 D Performance-Based Restricted Stock Units (PSUs) 0 Common Stock 6250 D Performance-Based Restricted Stock Units (PSUs) 0 Common Stock 15625 D Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of the NASDAQ Telecommunications Index, that were set by the Compensation Committee of the Issuer's Board of Directors. Between zero percent (0%) and 120% of the target number of shares reported in column 3 of this report will vest into Issuer Common Stock, if at all, on March 16, 2018. Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of the NASDAQ Telecommunications Index, that were set by the Compensation Committee of the Issuer's Board of Directors. Between zero percent (0%) and 200% of one-half of the target number of shares reported in column 3 of this report will vest into Issuer Common Stock, if at all, on each of April 1, 2018 and April 1, 2019. Each PSU represents a contingent right to receive one share of the Issuer's Common Stock, based on the Issuer's total shareholder return (TSR) compared to pre-established relative TSR goals, based on the TSR of the NASDAQ Telecommunications Index, that were set by the Compensation Committee of the Issuer's Board of Directors. Between zero percent (0%) and 200% of one-third of the target number of shares reported in column 3 of this report will vest into Issuer Common Stock, if at all, on each of March 31, 2018, March 31, 2019 and March 31, 2020. Kevin W. Riley 2017-11-06