144 0001249289 XXXXXXXX LIVE 0001806837 Vertex, Inc. 001-39413 2301 RENAISSANCE BOULEVARD KING OF PRUSSIA PA 19406 (800) 355-3500 SCHWAB JOHN R Officer Class A Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

10000 300000.00 61673585 03/05/2024 NASDAQ Class A 03/05/2024 Option Granted - 07/28/2020 Issuer N 10000 03/05/2024 Cash N John Schwab

2301 Renaissance Blvd King of Prussia PA 19406

Class A 12/18/2023 25000 663862.50 03/05/2024 09/15/2023 /S/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John Schwab