Who owns BlackRock?

Could you please clarify who exactly owns BlackRock? Is it a publicly traded company with shareholders, or is it privately held by a select few individuals or institutions? Are there any major shareholders or stakeholders that hold a significant portion of the company's ownership? Additionally, has there been any recent changes in ownership or management that could impact the company's direction or performance? I'm curious to understand the ownership structure of BlackRock and how it may affect its operations and decision-making processes.