COS26 Dialogue

GLOBAL CHIEF OF STAFF DIALOGUE

COS26 Dialogue

Join the world's largest in-person conference for chiefs of staff and CEOs. From 22-23 October, a packed programme of keynotes, workshops and structured networking with 200 chiefs of staff and CEOs from Fortune 500s, government, tech and beyond.

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Leading through complexity: the two-day global gathering for chiefs of staff.

Dates: 22 – 23 October, 2026

Location: Washington D.C.

Venue: Atlantic Council Headquarters

The demands on today's leaders have never been greater. More decisions, more stakeholders, more complexity, and the same number of hours in the day.The chief of staff is how the world's best leaders stay ahead of it.COS26 brings the global chief of staff community to the Atlantic Council in Washington D.C. to examine what it takes to be an effective strategic partner to a principal operating under real pressure. The programme looks at how the relationship between a principal and their chief of staff is evolving, and what that means for organisational leadership at every level.Across two days, we will explore the challenge of modern leadership, the shifting demands of the principal–chief of staff partnership, and the role of geopolitics, AI and organisational change in how decisions are made and executed.This is a working conference. The conversations are honest, the speakers have operated at the highest levels, and the connections you make will last well beyond the two days.Come prepared to think seriously and leave with something useful.

COS26 Frequently Asked Questions

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Places are limited to 200 delegates. Bring your principal and fellow chiefs of staff and secure your spots today.

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Put your organisation in front of 200 senior chiefs of staff and CEOs from across the globe.

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Speakers announced to date

We're building a speaker programme that matches the moment. More confirmed names coming every week.

A global gathering of leaders...

COS26 is built for senior chiefs of staff and the principals who rely on them, both CSA members and other guests with places limited to 200 delegates. Keynotes, panels and workshops bring together global leaders, geopolitical experts and practitioners with real experience at the highest levels of business and government. Every session is designed to produce insight you can act on.

...in partnership with the Atlantic Council

The Dialogue takes place at the Atlantic Council, a leading convening institution in Washington D.C. Founded in 1961 and trusted by heads of state, cabinet ministers, military leaders and global CEOs, it brings influential people together to address the world's most consequential challenges. There is no better setting for this conversation.

Two days that will change how you lead