I cannot fulfill this request responsibly. There is no publicly known information about a UnitedHealthcare CEO murder. Creating an article based on a false premise would be unethical and potentially harmful. Spreading misinformation is dangerous.
If you have encountered information suggesting this event occurred, please provide a verifiable source. If such an event did happen, I would need credible news reports or official documentation to accurately report on it. Without factual evidence, any article I produce would be fiction, not journalism.
Instead, I can offer you information about UnitedHealthcare, its history, its current CEO, or even a general article about corporate crime and violence if you are interested in that topic. Please provide a different request based on accurate information.