Why Sustainability, Culture and Leadership Can’t Be an Afterthought in M&A
When organizations go through a major merger or acquisition, the immediate priorities are obvious.
Clients need continuity. Systems need to integrate. Regulators need confidence. Leadership teams are under pressure to execute, maintain stability, and deliver value quickly.
In that environment, issues related to sustainability, culture, stakeholder relationships and long-term positioning can easily become secondary priorities — not because leaders don’t care, but because integration naturally pulls focus toward operational execution.
Having been part of the leadership team supporting the largest banking acquisition in Canadian history, I saw firsthand how complex large-scale integrations can be, and how important it is to have leaders at the table consistently bringing forward questions around sustainability, people, culture, stakeholder expectations and long-term risk.
That experience reinforced for me that without clear ownership and leadership attention, these issues can easily get lost in the noise of integration.
And increasingly, that creates risk.
A recent discussion I had with leaders at a large global organization going through a major merger reinforced this point. The conversation wasn’t about disclosures or reporting frameworks. It was about people, leadership and culture.
How do you retain the knowledge that lives in people, not processes?
Which standards, commitments and ambitions will define the future organization?
What kind of organization are you building through the integration itself?
These are strategic questions. And in my experience, there are five areas organizations should think about early in the M&A process.
1. Decide Early Which Standards and Ambitions Will Lead
When two organizations come together, there are often different approaches to sustainability, stakeholder engagement, governance and risk management.
If leadership doesn’t align early, organizations can unintentionally drift toward ambiguity — or toward the lowest common denominator.
Markets, employees, investors and communities often expect the strongest elements of each organization to prevail. The conversation therefore shouldn’t be “whose policy wins?” but rather: what positions the combined organization most effectively for the future?
The earlier legal, risk, business and sustainability leaders align on that question, the easier integration becomes.
2. Understand the Risk Profile of the Combined Organization
Transactions can expose concentrations of climate, operational, reputational or transition risk that were less visible before integration.
Combining portfolios may create new exposures, misalignment with stated commitments, or concentrations in industries and assets that are not future-positioned.
Organizations should be asking:
· Where are the organizations materially out of alignment on non-financial matters?
· Does the combined portfolio create new environmental, social, reputational or transition risks?
· What critical institutional knowledge or stakeholder trust could be lost through integration?
· What information are we missing to assess long-term resilience and future positioning?
· Has the transaction materially changed the organization’s ability to deliver on its commitments and ambitions?
This is particularly important in industries with significant physical assets, environmental exposure, supply chain complexity or community impact.
3. Don’t Underestimate Legacy Commitments and Relationships
One of the most overlooked integration challenges is the network of long-standing commitments both organizations bring into a merger.
Community investments. Indigenous relationships. Environmental obligations. Academic or philanthropic endowments. Reporting requirements. Local stakeholder trust.
These relationships don’t disappear because a transaction closes.
Handled thoughtfully, they help reinforce continuity and confidence. Handled poorly, they can create reputational exposure at exactly the moment organizations are trying to establish credibility in the market.
Organizations should inventory and map these commitments early and make deliberate, joint decisions around what will be maintained, evolved or integrated into the future organization.
4. People Hold More Institutional Knowledge Than Most Organizations Realize
In many integrations, organizations focus heavily on retaining senior executives and revenue-generating teams.
But some of the most important institutional knowledge sits elsewhere.
Sustainability leaders. Government or community relations teams. Environmental subject matter experts. Stakeholder engagement professionals. Culture leaders. Operational experts with decades of relationship and historical knowledge.
The knowledge that matters most during integration often lives in people, not processes.
Without leadership attention, these capabilities can erode quickly through uncertainty, restructuring or attrition. And once lost, they are extremely difficult to rebuild.
Strong integrations spend disproportionate time thinking about retention, role clarity, succession risk and preserving institutional knowledge — particularly in functions tied to reputation, operations and stakeholder trust.
5. Integration Is a Leadership and Culture Moment
Every integration decision sends a signal about what kind of organization is being built.
Employees notice where leadership spends time. They notice what gets prioritized, protected, funded and discussed. External stakeholders notice too.
Culture is not shaped through messaging during integration. It is shaped through actions.
The strongest integrations are not simply operationally successful. They create clarity around leadership, priorities, identity and long-term direction.
Increasingly, sustainability in M&A is not just about ESG. It is about resilience, governance, people, stakeholder trust and enterprise value.
The organizations that recognize that early will be better positioned not only to integrate effectively — but to emerge stronger because of it.
