Board Meetings
The board's role in M&A: what good oversight looks like in 2026
A board's influence over a deal peaks long before the acquisition exists.
By the time a specific target arrives in the boardroom with a valuation, a funding structure, and a signing timetable attached, the board is largely reacting. Management has spent months on the thesis, advisors are engaged, someone has met the founder. The question is whether to approve, and a board rarely says no at that point without a reason it could have identified far earlier.
This is why M&A oversight tends to be judged wrongly. The board asking sharp questions at the approval meeting looks like it is doing its job. The board that set boarda clear acquisition mandate eighteen months earlier, so the deal arriving on the table was the right kind of deal, has done considerably more, and it is invisible.
Harvard Business Review's analysis of acquisition performance put the failure rate between 70% and 90%, against more than $2 trillion of annual deal spending. The figure has proved stubborn in the fifteen years since. Most value destruction traces back to why a company acquired and what it intended to do with the target. Those are mandate questions, not diligence questions.
In this article, we explore:
- The value good board oversight brings to M&A
- The risks that boards need to navigate along the way
- How board meetings and board decisions can be optimised for greater success
Four areas that boards add value in a deal process
These run in order of the board's leverage, which is also chronological. The earlier the intervention, the more it changes the outcome.
1. Setting the strategic mandate for M&A
The mandate is the board's highest-leverage contribution and the one most often skipped. It answers a question no individual deal can: what would we buy, and why?
A mandate worth having is specific enough to exclude things. It should establish:
- The strategic gap acquisition is meant to close, and why building or partnering will not close it
- The categories of target that qualify, and the categories that do not, however attractive the price
- Capital parameters, including what the board will not fund and what leverage it will not accept
- The integration capacity the organisation actually has, as distinct from the capacity it believes it has
That last point carries weight. Boards approve acquisitions on a synergy model and an integration plan drafted by the team that wants the deal. A board that has already stated how many concurrent integrations the organisation can absorb has a reference point that does not move when an attractive target appears.
Without a mandate, every deal gets evaluated on its own merits, which sounds rigorous and is the problem. A deal assessed in isolation usually looks reasonable. Only against a stated strategy can a reasonable deal be identified as the wrong one.
2. Evaluating targets against strategic criteria
When a target arrives, the board's job is not to re-run management's analysis. It could not do so credibly and should not try. The job is to test the fit between this target and the mandate the board already set. As Simon Laffin, former chairman of Flybe, said on the Boardroom Confidential podcast, “The biggest risk is consensus. If I criticise myself as a chair, I would say I’ve probably valued consensus too much, because it doesn’t make your life easy. And yet the reality is sometimes you can get consensus where everybody agrees, and it’s still the wrong decision.”
Three questions do most of the work:
- Which part of the stated strategy does this target advance, and is that the part we said mattered most?
- What has to be true for the valuation to work, and which of those assumptions is the deal team least certain about?
- If this target were priced 25% higher, would we still want it? If not, we want the price, not the asset.
The third question is unpopular and useful. It separates conviction about a business from enthusiasm about a bargain, a distinction that rarely survives a competitive process.
3. Overseeing due diligence
The board does not conduct diligence. It assures itself that diligence was adequate, that the findings reached the board undiluted, and the uncomfortable ones were discussed rather than noted.
This is the point where the board's oversight duty becomes concrete. The Delaware standard, set out in Caremark and developed since, turns on whether the board assured itself that its information and reporting systems were adequate to bring appropriate information to its attention in time. In a deal, that is a practical test: did the board see the diligence findings, or a summary of them prepared by the people advocating for the transaction?
Security and compliance diligence deserves specific mention, because it is now standard practice and is routinely taken at face value. Didier Cossin, governance expert at IMD, noted in the Boardroom Confidential episode, that “The cybersecurity risk, with new AI models and the testing that has happened there, and of course the fantastic capabilities now in cyber breaches from sophisticated AI models. I think that’s typical of something that used to be a committee discussion and is becoming a board discussion” A clean report is not the same as a clean target, and a board with no cybersecurity expertise in the room has no basis for knowing the difference. Bringing the Chief Information Security Officer (CISO) in for an independent read of the security findings costs an hour, and it is the difference between having a report and having an opinion.
4. Approving and monitoring integration
Approval is where most boards think their M&A work concludes. It is where the work that determines the outcome begins.
Christensen's analysis points to the same issue: acquisitions fail on the logic of what the acquirer intends to do with the target, and that logic gets executed during integration. A board that approves a deal on a synergy model and does not return to it for eighteen months has approved a forecast and declined to oversee it. Practical oversight means attaching conditions the board will track: the synergies claimed, the dates they were said to arrive, the retention of the named people the thesis depends on, and the milestones that would signal trouble early. Each needs an owner and a review date on the forward agenda before the meeting ends.
What decays first is the reasoning, not the conditions. Conditions survive in the minutes. The strategic intent behind them, the assumptions the board tested, and the alternatives it weighed and set aside, usually survives only in the memory of the people who were in the room. Two years on, with a different management team presenting and a director or two rotated off, an integration review can measure performance against a target while nobody can say with confidence what the board believed it was buying, or why.
The risks boards need to manage in M&A
Each of these intensifies the later the board engages, which is the argument for the mandate stated a different way.
Information asymmetry
The gap between what management knows about a deal and what the board knows is wider than in any other area of oversight, and it is widening.
Datasite's 2026 survey of 1,000 dealmakers, conducted with FT Longitude, found half now use AI regularly or have it fully embedded in due diligence, and 96% are using or exploring it in sourcing and screening. Deal teams analyse more material, faster, than a board can independently interrogate. That is not a reason for suspicion, but it changes what a good question looks like.
The board's realistic move is not to match management's depth but to ask about method: what was analysed, what was sampled rather than analysed, what did the team choose not to look at, and where does the team itself feel least confident? A board can ask those questions, and they surface much of what a deeper analysis would. It is worth recording the answers. The board's record of what it was told, and what it was told was uncertain, is what makes a later review of the decision possible rather than speculative.
Speed pressure and decision quality
Deal timetables are set by the process, not the board's calendar, and the pressure is real. The question is which parts of a deal genuinely cannot wait and which have simply been presented that way.
The deal profession itself is flagging the risk that speed creates. In the same Datasite research, Sunil Thakur of Quadria Capital warns of the danger that outputs get taken at face value: “Whatever the system throws out can very easily start getting presented as fact, and that presents a huge risk going forward.” A quarter of dealmakers expect poor use of AI to destroy several high-value deals within five years.
The useful discipline is separating the two decisions that speed tends to merge. Authorising management to proceed to exclusivity is not approving a transaction. A board that grants the first while explicitly reserving the second keeps its optionality without slowing the process.
Conflicts of interest
Conflicts in M&A are rarely dramatic. They are structural, and usually visible in advance to anyone who looks.
- Management incentives that pay out on completion rather than on performance
- Advisors whose fee is contingent on the deal closing
- Directors with a relationship to the target, the counterparty, or the financing
- A CEO whose reputation is now attached to a transaction they have championed publicly
None of these disqualify anyone. All of them need identifying before the process starts, recording, and managing through recusal or an independent committee where the exposure is material. The governance failure is almost never the conflict itself. It is the failure to name it while naming it was still routine.
Security and compliance
Deal information is the most sensitive material a board handles, and the population with access expands rapidly: advisors, counsel, the counterparty, and internal teams not previously in scope. Access should be scoped to the individuals who need it rather than to the board as a standing group, and it should be revocable when circumstances change. The board should also know where deal material lives. Where confidential documents circulate by email, the organisation has lost the ability to say who holds what, which is a problem in itself and a serious one if the process is ever examined.
How board meetings support better M&A oversight
The mechanics of the meeting determine whether any of the above actually happens.
Give the meeting one mandate. A meeting called to evaluate, to approve, or to oversee is a different meeting each time. Open-ended M&A discussions produce a sense of engagement and no decisions. If there is no decision or question at stake, circulate the update instead.
Frame the item as the decision it actually is. “Project Atlas update” is not an agenda item. “Does the board authorise management to proceed to exclusivity, and on what conditions?” is. The second version tells every director what they are being asked for and what preparation the meeting requires.
Circulate the substance, not the summary. Diligence findings, independent valuations, and risk assessments need to reach directors early enough to be read and challenged. A board first seeing the numbers on a slide in the room is being briefed, not consulted.
Let the board speak before management does. Whoever frames the discussion shapes it. When management presents and the board responds, the range of the conversation has been set by the party with the strongest interest in the outcome. A Chair who takes directors' views first may hear concerns that do not survive a presentation.
Record the decision and its conditions with precision. M&A approvals are legally significant. The minutes need to capture what was approved, on what basis, what conditions attached, and what the board considered and set aside. Every condition needs an owner and a date, and both belong on the forward agenda before anyone leaves the room.
How Sherpany helps boards manage M&A decisions
Every acquisition a board approves carries a rationale, a set of conditions, and a strategic intent. Most organisations lose all three before the deal closes: into board packs, into minutes nobody surfaces again, and into the memory of people who may since have moved on. By the time integration is under review, the decision that authorised everything has lost its context.
Sherpany keeps that context attached to the decision. Deal materials, from target profiles to diligence reports and financial models, sit in one place, with access scoped to authorised directors rather than the board as a standing group. Where a director needs to interrogate a dense report or a lengthy agreement, Document Copilot lets them question the document directly rather than working through it page by page.
The approval itself is captured as a decision rather than an outcome: what was approved, the conditions attached, the owners and dates against each, and the reasoning that made those the right conditions. When the integration review arrives two years later, the board is not reconstructing its own thesis from memory. It is measuring performance against what it actually decided, with the assumptions still visible.
Sherpany is part of the Datasite Group, which means board decision-making now sits alongside the execution infrastructure, deal data, and AI capability that the rest of a transaction runs on. For boards working through the wider mid-year agenda, of which M&A oversight is one part, Sherpany's guide to strategic decision-making at mid-year covers deal oversight alongside strategic evaluation and board composition.
Oversight is decided before the deal arrives
The board that adds the most value in M&A is often the one that appears least busy during the transaction. Its work was done earlier: a mandate specific enough to exclude things, criteria that make a reasonable deal identifiable as the wrong deal, conflicts named while naming them was routine, and conditions attached to approval that someone is actually tracking.
The board that engages seriously for the first time at the approval meeting will ask good questions and mostly approve. Not because its directors lack judgement, but because by then the alternatives have gone, the timetable is set, and the only remaining decision is binary, about a deal shaped without them.
A deal process will always move faster than a governance cycle. What the board controls is how much of its thinking was done before the process started, and how much of that thinking is still available to the board reviewing the outcome three years later.
If you would like to improve how your board oversees M&A and other high-stakes decisions, book a free consultation today and find out how Sherpany can help.