Our co-founders both want to share the Head of Product seat because they both have deep technical expertise. Why does the EOS® model insist on only one name per seat, and how do we split this?

Question

Tyler Smith · Accepted Answer

When two people share a seat on the Accountability Chart, nobody is actually accountable. The EOS® model insists on having only one name per seat because split accountability leads to confusion, dropped balls, and slow decision-making. If your co-founders are sharing the Head of Product seat, your team will not know who has the final say, which stalls operations.

To resolve this, you must split the seat into two distinct, functional seats based on the work being done. For example, you might create a Product Strategy seat and a Product Delivery seat. Alternatively, one co-founder can take the Head of Product seat while the other transitions to an advisory role or owns a different area of the business, such as Technology or research and development.

Each seat must have its own five major roles and only one name assigned. If they must both contribute to product decisions, define one as the final decision-maker for the seat and the other as a key advisor. This structural clarity is vital because buyers will not tolerate co-leadership bottlenecks during due diligence or integration.