I think E&O, while a bit different would be a subcategory of what D&O provides:
Directors and Officers Liability Insurance Process
The process of D&O insurance in real life is straightforward. It all starts when a manager allegedly fails to perform their role. Some common risk scenarios include employment malpractice, reporting errors, inaccurate disclosures, insolvencies, and regulation violations. As a result, several claimants decide to sue the manager.