X0306 4 2018-11-07 0 0001315255 GTT Communications, Inc. GTT 0001308564 Calder Richard C/O GTT COMMUNICATIONS, INC. 7900 TYSONS ONE PLACE, SUITE 1450 MCLEAN VA 22102 1 1 0 0 President and CEO Common Stock, par value $.0001 per share 2018-11-07 4 A 0 140000 0 A 1327908 D Common Stock, par value $.0001 per share 495481 I By Rick Calder LLC Trust The Performance grant of 140,000 shares consists of six different financial targets: (1) 21,000 shares will begin vesting once the Company achieves $2.5 billion in annualized revenue (3) 21,000 shares will begin vesting upon achievement of $725 million in annualized Adjusted EBITDA (5) 28,000 shares will begin vesting upon achievement of $2.50 of annualized Adjusted Free Cash Flow per Share and. Upon achievement of financial target (1), (3) and (5) the applicable shares will vest quarterly (in equal amounts) over a 2 year period, provided the performance metric is maintained for each quarterly vest. (2) 21,000 shares will begin vesting upon achievement of $3 billion in annualized revenue (4) 21,000 shares will begin vesting upon achievement of $900 million in annualized Adjusted EBITDA (6) 28,000 shares will begin vesting upon achievement of $5.00 of annualized Adjusted Free Cash Flow per Share. Upon achievement of financial target (2), (4) and (6) the applicable shares will vest quarterly (in equal amounts) over a 1 year period, provided the performance metric is maintained for each quarterly vest. For any performance metrics not achieved by the end of 2021, those specific performance grant portions will expire and those shares are forfeited; time vesting after achieving performance metrics may extend beyond the end of 2021. /s/ Richard Calder 2018-11-09