Building a strong COO-CEO relationship in the first 90 days

Executive overview

A new COO's biggest mistake is acting too fast. Spend the first 90 days in three distinct modes: observe, stress-test, then execute.

Behind the formal structure, the relationship with the CEO is built through genuine human connection — not just professional alignment.

The COO who earns trust slowly moves faster later.

The 30-60-90 day framework

1. Days 1–30 — observe only: Carry a notebook. Write down every idea, concern, and change you want to make. Do not act on any of them. Build deep human connections with the team — understand their fears, passions, and struggles.
2. Days 31–60 — stress-test: Return to your notebook. Probe each hypothesis. Would you still fire that person? Still pursue that integration? Filter ideas through what you now know.
3. Days 61–90 — execute small wins: Act only on low-hanging fruit — easy changes that produce visible results quickly. Avoid large, complex initiatives (ERP rollouts, major restructures).

What counts as a good early win

• Removing a negative person from the team
• Hiring someone strong
• A process change that makes work easier
• Training that makes the team faster

Building trust with the CEO

• Develop genuine friendship behind the scenes, not just a working relationship
• Find shared interests and build commonalities
• Go offsite together; create space outside normal work rhythms
• Treat it like a partnership that needs tending, not a reporting line