Is Vertex a public company?

Excuse me, could you clarify whether Vertex is indeed a publicly traded company? I'm just trying to get a clear understanding of its corporate structure and whether its shares are available for purchase on the open market. It's important for me to know this information as I'm considering adding Vertex to my investment portfolio. Could you please provide me with some insight into its listing status and any relevant financial details that might be helpful? Thank you for your time.