Exhibit 99.1
22C Capital I, L.P.
By: 22C Capital GP I, L.L.C., its general partner
By: 22C Capital GP I MM LLC, its managing member
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Member Date: 08/26/2020
22C DiscoverOrg Advisors, LLC
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Managing Member Date: 08/26/2020
22C DiscoverOrg Investors, LLC
By: 22C DiscoverOrg MM, LLC, its managing member
By: 22C DiscoverOrg Advisors, LLC, its managing member
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Managing Member Date: 08/26/2020
22C Magellan Holdings LLC
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Officer with Title of Authorized Signatory Date: 08/26/2020
22C Capital GP I MM LLC
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Member Date: 08/26/2020
22C Capital GP I, L.L.C.
By: 22C Capital GP I MM LLC, its managing member
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Member Date: 08/26/2020
22C DiscoverOrg MM, LLC
By: 22C DiscoverOrg Advisors, LLC, its managing member
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Managing Member Date: 08/26/2020
22C Capital I-A, L.P
By: 22C Capital GP I, L.L.C., its general partner
By: 22C Capital GP I MM LLC, its managing member
By: /s/ Eric J. Edell
Name: Eric J. Edell
Title: Managing Member Date: 08/26/2020