Exhibit 99.1

FiveW Capital LLC

By: /s/ David Randall Winn

Name:  David Randall Winn

Title:  Managing Member Date:  06/04/2020

FiveW DiscoverOrg LLC

By: FiveW Capital LLC, its managing member

By: /s/ David Randall Winn

Name:  David Randall Winn

Title:  Managing Member Date:  06/04/2020

Ex. A-1