Is Bubble a public company?

Could you please clarify for me, is Bubble considered a publicly traded company? I'm trying to understand its corporate structure and whether it's listed on any stock exchange. Could you provide some insight into this matter? It would be greatly appreciated if you could explain the status of Bubble as a public or private company. I'm particularly interested in knowing if its shares are available for purchase on the open market. Thank you for your assistance in clarifying this matter.