Who owns Quantinuum?

Could you elaborate on the ownership structure of Quantinuum? Who are the key stakeholders and investors in this organization? Is it a privately held company or does it have public shareholders? Additionally, what are the major shareholders' backgrounds and how do they contribute to the company's growth and direction? Furthermore, has there been any significant changes in ownership recently, and if so, how have these changes impacted the company's operations and strategic plans? I'm particularly interested in understanding the financial backers and their involvement in shaping Quantinuum's future.