Leadership1 distinct publisher3 min readPublished
Melissa Sawyer's sample of large all-cash deals reports that over three-quarters of supplemental disclosures echo details courts have called immaterial, which turns the reflex to pay a mootness fee from prudence into a standing subsidy.
The Board Room · Leadership desk

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The study captures only one of two arithmetics at work here. The deal team's arithmetic is local: a mootness fee is paid once, on one transaction, against the risk that litigating consumes management time and pushes the closing date, costs the author says can far exceed the average fee [9]. The base rate is a property of the population, not of any single deal, so a finding like this is acted on by a firm or a board willing to lose time on one transaction to change what it is offered on the next twelve, not by a deal team.
What the sample establishes is narrower than the summary suggests, and worth reading precisely. The immateriality benchmark is analogy: over three-quarters of the supplemental disclosures resembled details that at least one federal court has found immaterial [6]. The materiality benchmark is type: under 0.2% were of a kind a federal court has actually found potentially material [7]. Subtract both and something under a quarter of the sample sits in neither bucket [16], unclassified by the article's own test. The source also does not give the total count of supplemental disclosures, so that 0.2% cannot be converted into a number of documents [18]. This reads as a strong prior for a settle-or-fight conversation, not as a holding anyone can cite.
The skeptic's objection is obvious and should be stated: the global co-head of M&A at Sullivan & Cromwell [1] sells sell-side work, and cheap disclosure is good for that business. Two things in the piece answer it partly. The classification leans on what federal courts have said about analogous details rather than on the author's own view of materiality [6]. And the examples are checkable by a reader: the components of a fully diluted share count fed into a discounted cash flow analysis [11], or the number of analyst reports reviewed with the low, high and median price targets [12]. The article also concedes the harder case, that process and conflict-of-interest disclosures can affect how stockholders decide, while arguing the supplemental versions usually add little to what was already there [13].
The board-deck version writes itself: nearly half the alleged deficiencies target banker analyses and projections [5], three-quarters of the resulting disclosures are immaterial by analogy [6], so stop paying. It is incomplete in three ways that matter to whoever signs off. The sample is the largest all-cash deals over a 29-month window [3][17], so it says nothing about stock consideration or the middle market. The average mootness fee is invoked but never sized [9][18], so the saving is unpriced. And the cost being avoided is schedule risk, which is not distributed evenly across a pipeline.
That is where the sequencing bites. If a handful of firms bring most of the publicized challenges [4], they are repeat players choosing targets, and a house rule that declines obviously immaterial supplements is a signal aimed at their intake decisions rather than at this quarter's fee. The return on refusing arrives on the deal after next, which is why the decision belongs to the people who will still be there to collect it.
Ranked by verification strength, evidence, and original report placement.
Melissa Sawyer is Global Co-Head of M&A at Sullivan & Cromwell LLP and authored the review.
The article is a sequel to the author's previous pieces titled "Merger Agreements are Too Long" and "Disclosure Schedules are a Waste of Money".
The review looked at a sample of 51 of the largest all-cash deals announced between January 1, 2024 and May 31, 2026 that had supplemental disclosures.
A handful of firms brought most of the publicized disclosure challenges in that period, and the complaints are often cookie-cutter, making largely similar assertions of inadequate disclosure centered on a few recurring subjects.
Nearly half of the alleged disclosure deficiencies in the 51-deal sample concerned financial-advisor analyses or management projections.
In the 51-deal sample, over three-quarters of the supplemental disclosures involved details analogous to those that at least one federal court has found to be immaterial.
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1 article · September 1, 2026
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Evidence-backed comparisons of source perspectives and observed adoption signals. Read the methodology
Which Builder, Operator, and Investor concerns the observed source mix emphasized—not a truth score.
Evidence, demonstrated adoption, hype gap, incentives, and confidence are assessed independently, each on its own current evidence. How these are measured.
One firm's private tally
The 51 deals, the three-quarters, the sub-0.2% — all of it comes from a count Sullivan & Cromwell ran in-house and published through Harvard's governance forum. The deal list is not disclosed, the coding rules are not disclosed, and the footnote that was supposed to name the governing federal standard trails off mid-sentence in the text available to us. What is genuinely verifiable is the quoted supplemental language, which any reader can match against the proxies it came from. The excerpts are solid; the statistics are unaudited.
Sample selected on the trait being measured
No prevalence figure can be pulled from this. The 51 deals were chosen because they already had supplemental disclosures, so the review can describe what such disclosures contain but cannot say how many large deals draw a challenge, how many settle, or whether the practice is growing or fading. Counting mootness fees paid, or deals that declined to pay, would answer that; this reporting does neither.
Precision beyond the shown work
The conclusion is modest and probably right in direction; the arithmetic around it outruns what is on the page. "Less than 0.2%" invites a reader to picture a denominator that is never supplied, and the case against paying rests on an average mootness fee that is never stated — while the author's own counterweight, management time and closing delay, goes unpriced too. Our framing of the fee as a standing subsidy inherits that gap: the practice looks wasteful here, but no one has shown what refusing costs.
Defence-side counsel, house thesis
The author leads M&A at a firm that sits on the paying side of every mootness fee, and this is the third entry in a series whose earlier instalments were titled 'Merger Agreements are Too Long' and 'Disclosure Schedules are a Waste of Money'. The thesis preceded the sample. That does not make the count wrong, but it does mean the party with an interest in the answer also wrote the coding standard, and the firms bringing these suits appear only as a 'relatively small segment of the plaintiffs' bar' with no chance to reply. Harvard's forum publishes practitioner submissions largely as received.
Nothing yet to check it against
One publisher, one author, one dataset that stays behind the curtain. We can stand behind the legal framing and the quoted excerpts; we cannot stand behind the sample, the classification, or the cost comparison that turns the finding into advice. A plaintiff-side count, a court's own tally, or an academic replication would move this number sharply in one direction or the other — and until one appears, the story is a well-argued brief rather than a settled fact.