144 0001887656 XXXXXXXX LIVE 0001866633 CONSENSUS CLOUD SOLUTIONS, INC. 001-40750 700 S. Flower Street, 15th Floor Los Angeles, CA 90017 (323) 860-9200 JEFFREY SULLIVAN Director Common Morgan Stanley Smith Barney LLC Executive Financial Services

1 New York Plaza 8th Floor New York NY 10004

5400 203583.78 18324922 08/12/2026 NASDAQ Common 12/10/2018 Restricted Stock Vesting Under a Registered Plan Issuer N 7 12/10/2018 Services Rendered Common 11/15/2019 Restricted Stock Vesting Under a Registered Plan Issuer N 56 11/15/2019 Services Rendered Common 05/15/2020 Restricted Stock Vesting Under a Registered Plan Issuer N 67 05/15/2020 Services Rendered Common 11/13/2020 Restricted Stock Vesting Under a Registered Plan Issuer N 66 11/13/2020 Services Rendered Common 05/14/2021 Restricted Stock Vesting Under a Registered Plan Issuer N 57 05/14/2021 Services Rendered Common 11/15/2021 Restricted Stock Vesting Under a Registered Plan Issuer N 251 11/15/2021 Services Rendered Common 02/07/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 458 02/07/2022 Services Rendered Common 03/03/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 666 03/03/2022 Services Rendered Common 03/06/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 200 03/06/2022 Services Rendered Common 03/13/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 39 03/13/2022 Services Rendered Common 05/15/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 306 05/15/2022 Services Rendered Common 11/15/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 108 11/15/2022 Services Rendered Common 12/15/2022 Restricted Stock Vesting Under a Registered Plan Issuer N 901 12/15/2022 Services Rendered Common 02/07/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 433 02/07/2023 Services Rendered Common 03/03/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 217 03/03/2023 Services Rendered Common 03/06/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 180 03/06/2023 Services Rendered Common 03/13/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 36 03/13/2023 Services Rendered Common 05/15/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 409 05/15/2023 Services Rendered Common 06/15/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 787 06/15/2023 Services Rendered Common 12/15/2023 Restricted Stock Vesting Under a Registered Plan Issuer N 156 12/15/2023 Services Rendered N JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/29/2026 2544 97333.44 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/25/2026 6734 235892.02 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/17/2026 8237 281623.03 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/17/2026 2955 101031.45 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/16/2026 5000 173600.00 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/16/2026 1794 62287.68 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/07/2026 897 30049.50 JEFFREY SULLIVAN

700 S. Flower Street, 15th Floor Los Angeles, CA 90017

Common 06/06/2026 1477 49479.50 08/12/2026 /s/ Jeffrey Sullivan