

Who Owns What? EAs and Chiefs of Staff on Drawing the Line
Every executive with both an EA and a Chief of Staff has watched the two roles collide. Scheduling gets tangled up in prioritization. Prep work gets duplicated. Access gets murky. And when it works, it feels like nobody outside the room can quite explain why.
The Chief of Staff Network and eaMAFIA are bringing together two EAs and two Chiefs of Staff to talk about what a successful partnership actually looks like day to day, across different company stages and industries.
Your panelists:
Rachel Tan, Director of Executive Administration & Strategic Programs to the CEO and President at Benchling.
Sam Andonian, Executive Business Partner to the CEO at Splice. Previously EA to the CEO at Bumble, Principal EA to the CEO at Slack, and ABP at Google.
Amy Moore, Chief of Staff, Research Services at Oracle Health and Life Sciences.
Joe Ribecchi, Chief of Staff, Enterprise Risk Management & Risk Oversight at American Express.
What we'll cover:
How to split ownership so nothing falls through or gets done twice
What each role should escalate and what they should absorb
Managing information flow when both of you sit closest to the exec
How the split changes from Series B to Fortune 100
What founders and CEOs get wrong when they hire one and not the other
Transitioning from EA to Chief of Staff and what does/doesn’t carry over
This session is for EAs and Chiefs of Staff in tech and venture, plus the founders and CEOs who work with them. Bring your questions, we're saving time for Q&A!
This call is open to everyone—you don't need to be a member of either community to attend.
About the Chief of Staff Network
The Chief of Staff Network is a global community of 900+ verified Chiefs of Staff across 20+ cities. We run peer groups, city chapters, and programming built around the problems that only other Chiefs of Staff understand. Members get a vetted network, a private member platform, and a direct line to people who have already solved what you're working on.
About eaMAFIA
eaMAFIA is a private community of high-performing EAs supporting the top leaders in tech and venture. Founded by Kelly Kovacs, former EA and Chief of Staff to the CEO at Twitter, eaMAFIA delivers expert-led training, exclusive resources, and a peer network that allows EAs to level up, broaden their impact, and build a true strategic partnership.