Can an CEO say my fellow colleagues to address executives in his company?

While a CEO can say "my fellow colleagues" to address executives, it may not be the most common or formal choice. Typically, a CEO might use terms like "team," "executives," or "leadership" to convey professionalism and respect. The appropriateness of the phrase can depend on the company culture and the context of the communication. Ultimately, the goal is to foster a sense of unity and collaboration among the leadership team.