Co-Leaders: When Sharing the Top Job Works

Co-leaders share executive authority across a business or function, splitting strategic responsibility between two people rather than concentrating it in one. When the model works, it produces better decisions, faster execution, and a leadership team that covers more ground than any single person could. When it fails, it produces confusion, political friction, and a business that cannot move in any direction without a fight.

The difference between those two outcomes is almost never about the people. It is about how the structure is designed, communicated, and maintained.

Most of the writing on co-leadership focuses on the interpersonal side: chemistry, communication, trust. That matters, but it is not the whole picture. In a commercial context, co-leadership is a structural decision with direct consequences for how your go-to-market strategy gets built and executed. If you are thinking about the broader mechanics of growth and market positioning, the Go-To-Market and Growth Strategy hub covers the strategic foundations that sit underneath decisions like this one.

What Does Co-Leadership Actually Mean in Practice?

The term gets used loosely. Sometimes it describes a formal joint CEO structure. Sometimes it describes two senior leaders who share a function, like a CMO and a VP of Growth who jointly own revenue marketing. Sometimes it is not a formal title at all, just a working arrangement between two people who have divided the job between them without anyone writing it down.

Each of those situations carries different risks. The formal joint CEO model is rare and high-stakes. The functional co-leadership model is far more common, particularly in marketing and commercial teams. The informal version is the most dangerous, because the lack of clarity tends to surface at the worst possible moment.

I have seen all three. Early in my agency career, I was handed a whiteboard marker mid-brainstorm when the founder had to leave for a client meeting. No formal handover, no briefing, just a room full of people looking at me. That is an extreme version of informal co-leadership, but it captures something real: the moment you share authority, even temporarily, you need to know who owns what. I did not freeze, but I also did not have the clarity I needed, and the session was messier than it should have been.

The lesson I took from that, and have applied many times since, is that co-leadership without defined domains is not really co-leadership. It is shared ambiguity.

Why Do Businesses Choose a Co-Leadership Model?

There are usually three legitimate reasons a business ends up with co-leaders, and one illegitimate one.

The first legitimate reason is complementary skills. One person brings deep commercial or financial acumen, the other brings product or operational depth. Neither covers the full job alone, and the business is better served by both of them than by promoting one and losing the other.

The second is succession management. A founder or outgoing CEO wants to transition out gradually, so they run alongside an incoming leader for a defined period. Done well, this is one of the most effective ways to transfer institutional knowledge without losing continuity.

The third is scale. When a business grows faster than a single leader can manage, splitting the role by geography, product line, or function is a rational response. BCG’s work on scaling agile organisations points to distributed leadership as a structural necessity at a certain size, not just a nice-to-have.

The illegitimate reason is politics. Two people both want the top job, neither is clearly the right choice, and the board or founder decides to give it to both of them to avoid a difficult conversation. That is not a co-leadership model. That is a deferred conflict.

Where Co-Leadership Breaks Down in Go-To-Market Strategy

Go-to-market is one of the areas where co-leadership tension shows up fastest, because GTM requires consistent positioning, clear prioritisation, and a single narrative in the market. Two leaders with overlapping authority and different instincts will pull those things in different directions.

I have watched this happen at close quarters. When I was turning around a loss-making agency, one of the structural problems I inherited was that commercial and delivery were effectively co-led without clear accountability. The commercial side was promising things the delivery side could not execute. The delivery side was making scope decisions that undercut the commercial side’s pricing. Neither was wrong in isolation. The problem was that no one had drawn the line between them clearly enough.

Fixing it required something uncomfortable: making explicit who had final authority on what, and accepting that this would disappoint one of the two leaders involved. We moved the business from significant loss to meaningful profit over the following year, and the restructured accountability was one of the factors that made that possible. You cannot improve delivery margins or change pricing strategy when two people have equal say and different incentives.

Vidyard’s analysis of why GTM feels harder identifies fragmented ownership as one of the core reasons execution stalls. Co-leadership does not cause that fragmentation automatically, but it creates the conditions for it if the structure is not tight.

The specific GTM risks in a co-leadership model include:

• Two leaders briefing agencies or internal teams differently, producing inconsistent creative and messaging
• Pricing decisions that require both leaders to agree, slowing down competitive responses
• Market segmentation that reflects each leader’s preferred customer rather than the actual ICP
• Sales and marketing misalignment when one co-leader owns each function and they are not fully coordinated

None of these are inevitable. But they all require deliberate structural design to prevent.

How to Design a Co-Leadership Structure That Holds

The design question is not “how do we make these two people work well together?” That is a relationship question. The design question is “how do we build a structure that does not depend on the relationship being perfect at all times?”

Strong co-leadership structures share four characteristics.

1. Domain Separation, Not Shared Ownership

Each co-leader should have domains where their authority is final. Not “we both weigh in and then decide together” on everything, but “this is yours, this is mine, and these are the things we genuinely need to align on.” The list of genuinely joint decisions should be short. If everything requires joint sign-off, you have not built a co-leadership model, you have built a committee.

In a marketing context, this might mean one co-leader owns brand and content strategy while the other owns performance and revenue marketing. Both need to be aligned on positioning and ICP, but day-to-day decisions sit clearly with one person.

2. A Defined Escalation Path

When co-leaders disagree on something in their overlap zone, there needs to be a clear process for resolving it. This is not about who wins. It is about how long the disagreement is allowed to run before it gets escalated or decided. Unresolved co-leader disagreements have a half-life measured in days before they start affecting the team around them.

3. A Single External Voice

For market-facing communications, clients, investors, and partners, there should be one voice or a clearly coordinated position. Two co-leaders who brief external stakeholders differently will create confusion that takes months to undo. I have seen this happen with agency pitches where two senior clients gave us contradictory briefs because they had not aligned internally. We spent the first three meetings managing their internal politics rather than solving their problem.

4. Regular Structural Reviews

The domains that made sense at the start of the co-leadership arrangement will not necessarily make sense twelve months later. Businesses change shape. One co-leader’s domain may grow in complexity while the other’s shrinks. Reviewing the structure formally, not just the relationship, keeps the model fit for purpose.

The Relationship Side: What It Takes to Sustain Co-Leadership

Structure handles the mechanics. The relationship handles everything else.

Co-leaders who work well together share a few consistent traits. They are genuinely comfortable with the other person getting credit. They have a private channel for working through disagreements before they become visible to the team. They are honest with each other about performance, including their own. And they have a shared view of what success looks like for the business, not just for their individual domains.

That last point is more important than it sounds. I have seen co-leader arrangements where both people were technically competent and personally decent, but they had different mental models of what the business was trying to become. One was building for acquisition, the other was building for long-term independence. Neither had said it out loud. The misalignment showed up in every strategic decision, and it took an outside perspective to name it clearly enough to resolve it.

Co-leaders need to have the explicit conversation about end goals, not assume alignment because they have been working together for a while.

Co-Leadership in Marketing Functions Specifically

Marketing functions are more likely than most to end up in informal co-leadership arrangements, because the discipline has fragmented so much. A modern marketing team might have a CMO who owns brand, strategy, and communications, and a VP of Growth or Revenue who owns performance, pipeline, and product marketing. On paper those are different roles. In practice they overlap constantly.

The overlap points that cause the most friction are: messaging and positioning, budget allocation between brand and performance, ICP definition, and the attribution of revenue to marketing activity.

On attribution specifically, I would encourage co-leaders to agree on a shared measurement framework before they need it, not after the first quarterly review when both are trying to claim credit for the same revenue. Semrush’s analysis of market penetration strategy is a useful reference point for thinking about how brand and performance investment interact at the market level, which is the context that matters for those attribution conversations.

Pricing strategy is another area where co-leadership friction is common. BCG’s research on pricing in B2B go-to-market contexts highlights how pricing decisions ripple through the entire commercial model. When two leaders have different instincts on pricing, and both have authority over parts of the commercial process, you end up with inconsistency that the market notices before you do.

When Co-Leadership Should Be Dissolved

Not every co-leadership arrangement should be preserved. Some run their course. The succession model, by definition, has an end date. The complementary skills model may need to evolve as the business scales and the roles become more distinct. The informal model may need to be formalised or ended.

The signs that a co-leadership arrangement has stopped working are usually visible to the team before they are visible to the co-leaders themselves. Watch for: decisions slowing down without a clear reason, team members going to one co-leader to reverse decisions made by the other, public disagreements in meetings that should have been resolved privately, and a general sense that the business does not know who to follow on a given topic.

When I was building out a larger agency team, growing from a small operation to a significantly larger one, I had to make a difficult call about a co-leadership arrangement that had worked well in the earlier stage but was creating drag at scale. One of the two people involved was clearly the right leader for where the business was going. The other was excellent but better suited to a different role. Having that conversation directly, and restructuring accordingly, was one of the harder management decisions I made in that period. It was also one of the more important ones.

Keeping a co-leadership model in place because it feels fair, or because dissolving it is uncomfortable, is a business cost that rarely shows up on a P&L directly. But it shows up in speed, in clarity, and in the quality of decisions.

What Good Co-Leadership Looks Like From the Outside

When co-leadership is working well, the people around the co-leaders rarely think about the structure at all. Decisions get made. The business has a clear direction. Each leader is accessible and authoritative within their domain. Disagreements happen privately and produce better outcomes publicly.

The team does not feel caught between two people. Clients or partners do not receive mixed messages. And the co-leaders themselves are not spending a disproportionate amount of their time managing the relationship at the expense of managing the business.

That last point is worth sitting with. Co-leadership has a maintenance cost. It requires more explicit communication than solo leadership, more deliberate alignment, and more willingness to have uncomfortable conversations early. If that cost is worth paying because the combined capability is significantly better than either person alone, the model makes sense. If the maintenance cost is approaching the value it creates, it probably does not.

For more on the strategic frameworks that sit underneath decisions like these, the Go-To-Market and Growth Strategy hub covers how structure, positioning, and execution connect across the commercial model.

About the Author

Keith Lacy is a marketing strategist and former agency CEO with 20+ years of experience across agency leadership, performance marketing, and commercial strategy. He writes The Marketing Juice to cut through the noise and share what works.

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