X0306 4 2018-05-22 0 0001697152 ConvergeOne Holdings, Inc. CVON 0001409564 Eghbali Behdad C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 1 0 1 0 0001323912 Feliciano Jose Enrique C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 1 0 1 0 0001730848 Clearlake Capital Partners III (Master), L.P. C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 0 0 1 0 0001730838 Clearlake Capital Partners III, GP, L.P. C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 0 0 1 0 0001409591 Clearlake Capital Partners, LLC C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 0 0 1 0 0001409590 CCG Operations, LLC C/O CLEARLAKE CAPITAL GROUP, L.P. 233 WILSHIRE BLVD, SUITE 800 SANTA MONICA CA 90401 0 0 1 0 Common Stock 2018-02-22 4 A 0 4169878 A 42299691 I By Clearlake Capital Partners III (Master), L.P. The Reporting Person became entitled to receive these shares on May 22, 2018 for no additional consideration pursuant to an earnout provision in the Agreement and Plan of Merger between C1 Investment Corp., Clearlake Capital Management III, L.P., in its capacity as seller representative, and Forum Merger Corporation, dated November 30, 2017 (the "Merger Agreement"). Subject to achievement of the associated earnout milestones, the Reporting Person's right to receive these additional shares became irrevocable on February 22, 2018, the closing date of the transactions under the Merger Agreement. The calculation for the value of these shares was established in the Merger Agreement. Consists of 42,299,691 shares of Common Stock held directly by Clearlake Capital Partners III (Master), L.P. Clearlake Capital Partners III GP, L.P. is the General Partner of Clearlake Capital Partners III (Master), L.P. Clearlake Capital Partners, LLC is the General Partner of Clearlake Capital Partners III GP, L.P. CCG Operations, LLC is the managing member of Clearlake Capital Partners, LLC. Each of Behdad Eghbali and Jose E. Feliciano are managers of CCG Operations, LLC and therefore share voting and investment power over the shares held by Clearlake Capital Partners III (Master), L.P. /s/ John T. McKenna, Attorney-in-Fact for Behdad Eghbali 2018-05-24 /s/ John T. McKenna, Attorney-in-Fact for Jose E. Feliciano 2018-05-24 Clearlake Capital Partners III (Master), L.P., by Clearlake Capital Partners III GP, L.P., its general partner, /s/ Behdad Eghbali, its Co-President 2018-05-24 Clearlake Capital Partners III GP, L.P., /s/ Behdad Eghbali, its Co-President 2018-05-24 Clearlake Capital Partners, LLC, by /s/ Behdad Eghbali, its Managing Partner 2018-05-24 CCG Operations, LLC, by /s/ Behdad Eghbali, its Manager 2018-05-24