Certain SARs of Vertex, Inc. are subject to a Lock-Up Agreement Ending on 24-JAN-2021. These SARs will be under lockup for 180 days starting from 28-JUL-2020 to 24-JAN-2021. Details: The executive officers, directors and the holders of all of capital stock are subject to lock-up agreements that restrict their ability to transfer shares of capital stock for 180 days from the date of this prospectus. Subject to certain exceptions, the lock-up agreements limit the number of shares of capital stock that may be sold immediately following this offering.