X0306 4 2018-03-01 0 0001517228 CommScope Holding Company, Inc. COMM 0001475635 Armstrong Philip Martin JR C/O COMMSCOPE HOLDING COMPANY, INC., 1100 COMMSCOPE PLACE, SE HICKORY NC 28602 0 1 0 0 SVP, Corporate Finance Common Stock 2018-03-01 4 A 0 3477 0.00 A 26505 D Stock Option (Right to Buy) 38.34 2018-03-01 4 A 0 8984 0.00 A 2019-03-01 2028-03-01 Common Stock 8984 8984 D Reflects restricted stock units that vest in three equal installments on 03/01/2019, 03/01/2020 and 03/01/2021, subject to the reporting person's continued employment with the issuer. Includes (a) 1,949 restricted stock units that were granted on 02/23/2016 and will vest on 02/23/2019; (b) 3,380 performance share units that were earned on 02/23/2017 and will vest on 02/23/2019; and (c) 2,341 restricted stock units that were granted on 02/27/2017 and will vest ratably on 02/27/2019 and 02/27/2020, each subject to the reporting person's continued employment with the issuer. The option vests in three equal installments on 03/01/2019, 03/01/2020 and 03/01/2021, subject to the reporting person's continued employment with the issuer. /s/Philip M. Armstrong, Jr. 2018-03-05