The Locked Box Fixes the Price and Forbids Leakage

The Gap Nobody Can Avoid

An acquisition agreement is signed in March and completed in July because regulatory authorization financing and consents take time. During those four months the target continues to operate. It generates cash pays suppliers collects accounts receivable and its net debt and working capital change every day

The price was negotiated on financial statements that are already historical. Therefore the parties must agree on a mechanism that decides whose economic profit or loss represents the intermediate period

Two mechanisms dominate and the choice between them is one of the most consequential trade terms in a deal. It rarely gets the attention it deserves partly because it appears on agendas rather than in the headlines and partly because it looks like plumbing. It's not plumbing. In a major deal the mechanism can move more value than a full turn of multi-level trading

The Familiar Answer Adjusts Afterward

The traditional mechanism is completion accounts: agree an enterprise value pay an estimate at closing then prepare accounts showing actual net debt and target working capital at closing date and correct in any direction the final figures require

The logic is clean. The seller owns the business until closing and is paid for what he delivers on that date. If the company generated cash in the gap the seller maintains the profit through lower net debt and a higher price. If it burned cash the seller absorbs it

The cost of that precision is a process. Someone has to prepare the accounts someone has to review them and the two sides have to agree on judgments that are genuinely debatable

The Locked Box Fixes the Price Earlier

under a closed box the price is set with reference to a historical balance the closed box date which may take several months before signing. There is no subsequent adjustment

From that date on the risk and economic benefit of the business belong to the buyer although legal ownership is subsequently transferred. For this to be viable the agreement prohibits escape that is any value that flows from the target to the seller after the closed date and the seller indemnifies the buyer for anything that occurs

Permissible leakages typically ordinary course items agreed upon in advance are excluded. Everything else including dividends seller management fees bonuses and non-arm's length transactions is prohibited and recoverable pound for pound

A Worked Example: The Same Deal Priced Both Ways

Descriptions of this choice tend to be abstract which is a shame because a set of numbers makes everything obvious. Here's a simple deal with round figures chosen for clarity rather than realism

A buyer agrees on an enterprise value of 500 million for a target. The cash closed date is December 31. Closing lands on June 30 so the gap is 181 days pretty close to half a year. On the closing date the target had net debt of 120 million

Step one the fixed price of the shares. The value of the company minus the net debt gives the price of the shares. 500 minus 120 equals 380 million. Underneath a locked box that number is already worked out. It won't be moved by anything the company does between January and June

Step two interest ticking. The buyer owns the economy as of December 31 but doesn't pay until June 30 so the seller is out of money for 181 days. Let's say the parties trade 6 percent annually on the stock price. The calculation is 380 million times 6 percent times 181 divided by 365 which is about 11.3 million. Add it up

Step three escape. During the interval the seller charged the target a management fee of 4 million that was not on the allowed list. That is leakage fully recoverable so it follows. Deduct 4.0 million

Cash actually paid at closing: 380 plus 11.3 minus 4.0 equals 387.3 million

Now value the same deal in closing accounts. Suppose the target performed well and generated 25 million free cash in those six months and paid the same fee of 4 million to its owner. The net debt at closing is therefore 120 minus 25 plus 4 which is 99 million. The equity value becomes 500 minus 99 or 401 million. There is no markup interest because the seller was paid the balance as it wason the day of handing over the keys

Due to these facts the seller loses 13.7 million euros under lock and key. If you look at where that figure comes from the mechanism is no longer mysterious: 25 million of cash generation minus 11.3 million of interest is equivalent to 13.7 million

That is the entire economic content of the choice. The buyer captures the cash that the company wastes during the interval and pays the seller a fixed rate for the privilege. Whenever cash generation is ahead of the ticker the buyer wins. Whenever it falls behind the seller wins

Which completely reframes interest rate trading. A ticker is neither a financing cost nor a courtesy. It is the strike price of the target's cash generation over the gap period and the party with the best forecast of that cash generation should care about it much more than the half rate point it sounds like

Why Sellers Prefer the Locked Box

Three reasons and they are more practical than theoretical

Price certainty. The seller knows exactly what he or she will receive at signing which is hugely important for a private equity seller distributing proceeds to investors or a corporate seller agreeing to use the proceeds. A fund that has told its investors what the exit produces doesn't want that number to rise 3 percent four months later

There is no dispute after closing. Disputes over final accounts are common and costly because the adjustment depends on accounting judgments applied to a balance sheet prepared by the buyer using target records after the seller has left. Definitions of working capital sourcing levels and cut-off treatment are all debatable and the seller is arguing from outside the building

Auction dynamics. In a competitive process a seller can impose a closed box because bidders compete on other terms. That is why the mechanism became standard in European auctions. When five bidders want the asset the mechanism is not actually negotiated. It is announced

Why Buyers Push Back

The buyer's objection is simple: You are buying a company based on a balance sheet that may be months old without any adjustment for what actually happened and your only protection is a pact against value extraction

That covenant does not protect against ordinary operational deterioration. If the business simply performs poorly between closing date and closing generating less cash than expected the buyer bears everything and has no remedy because nothing leaked. It simply underperformed

Run the worked example again with the company generating 2 million instead of 25 million and the picture is reversed. The buyer still pays 380 plus 11.3 million interest for six months of almost nothing. The seller has been paid a fixed rate for a business that has stalled

Therefore buyers require thorough diligence on the closed box balance strict definitions of leakage and sometimes an interest charge from the closed box date to closing to compensate for the delay in receiving business

The Interest Mechanism

This last point is worth explaining because it is often misunderstood. Since the buyer owns the economy from the cash closed date but pays at closing the seller has been out of money during the intervening period while the buyer has enjoyed the cash generation

Deals typically resolve this with a daily interest amount added to the price from lock date to completion negotiated as a fixed daily rate or figure. When the target generates a lot of cash that figure is a significant deal in itself and is effectively an indicator of expected cash generation during the gap

Two details decide how much it is worth. The rate obviously. And the basis on which it is applied which can be the price of the shares the value of the company or a fixed daily amount and about which the parties sometimes argue more than the rate itself

Case Study: LVMH, Tiffany, and What the Gap Is Worth

Disputes over closed boxes are usually resolved privately so the public record is sparse. What the public record does contain is a very clear demonstration of why the gap between signing and closing is worth arguing about

In November 2019 LVMH agreed to acquire Tiffany and Company for $135 per share valuing the business at approximately $16.2 billion

LVMH tried to pull out. Tiffany filed a lawsuit in Delaware. The parties finally settled in October 2020 at a reduced price of $131.50 per share and the deal closed in January 2021 at about $15.8 billion. The renegotiation moved about $425 million in value and it took a lawsuit and nearly a year to get there

This was a fight over material adverse change clauses and closing conditions rather than a close dispute and I want to be precise about it. The reason it belongs here is the underlying issue which is identical. Between the date the price was agreed upon and the date the money was moved the business changed. Someone had to endure that change and the contract had not stated it clearly enough to avoid litigation

A closed box settles it brutally and up front: The buyer takes care of everything from the closed box date period. That's a tough and clear answer and after watching a $16 billion-a-year deal get spent in Delaware quite a few professionals concluded that a tough and clear answer beats a fancy and ambiguous one

Where the Locked Box Breaks

The mechanism is usually presented as a modern and neat option. It has failure modes and they are worth naming

The dispute does not disappear it moves. Closed box deals are sold without dispute. What really happens is that the argument moves from the completion accounts to the permitted leakage schedule. Whether a particular payment was ordinary whether an intra-group top-up was made at arm's length whether a management bonus was contractually committed before the closed box date: all of these are questionable and are contested. The mechanism removes an accounting argument and creates a contractual one

Long regulatory calendars break logic. A closed box can be defended for four months. Over the course of an eighteen-month antitrust review you transfer an enormous amount of operational risk to a buyer who does not yet control the business cannot direct management and is watching someone else spend their own money. The larger the gap the worse the mechanism will fit

The ticker rates poorly in volatile conditions. A fixed rate agreed upon at signing is a poor indicator of cash generation when the business or macroeconomic environment is advancing rapidly. It was negotiated on a forecast and forecasts that are made under stable conditions are those that fail under unstable conditions

He concentrates everything in diligence. Without correction the accuracy of the closed balance sheet is the complete protection of the buyer's price. If the reference accounts were aggressive on provisions or lax on cuts there is no post-closing mechanism to detect this. The remaining remedy is a warranty claim which is slower more limited and much more difficult to obtain than an adjustment would have been

None of this makes closed box wrong. It makes it a mechanism whose costs are less visible than completion accounts which is different from having no costs

How I Would Actually Analyse a Locked Box

If I was given a draft according to a locked box this is the order I would work in and it is deliberately not the order in which the document is written

First I would construct the small table from the previous example because until you know the expected cash generation during the gap you cannot say whether the ticker is generous or punitive. Everything else is comments on that comparison

Second I would read the schedule of allowable leaks before reading anything else in the agreement. That schedule is where the value really lies. A broad ordinary solution can quietly give back to the seller a big chunk of what the mechanism was supposed to take away from them

Third I would compare the gap assumption with the regulatory analysis. If the deal needs approval in multiple jurisdictions the four-month gap in the model is optimistic and a longer gap changes a lot who bears what

Fourth I would look at the age and quality of the closed-cash accounts. Audited and three months old is a different proposal than the one prepared by management and nine months old and the latter deserves a discount or a different mechanism

My own bias for what it's worth is that closed box is the best option for a clean stable short-term cash-generating business and that buyers too easily accept it in assets that are neither of those things because it has become the market standard in European processes. Standard is not the same as adequate. That is an opinion and reasonable professionals do not agree with it

How to Choose

The decision usually follows facts rather than preferences. A closed box works when recently audited or reviewed accounts exist the business is stable and predictable and the interval to closing is short. Completion accounts work best when reference accounts are outdated or unreliable the business is volatile or seasonal the closing schedule is long or uncertain or the target is separating from a group and no separate accounts yet exist

This last case is decisive in practice. An exclusion does not have a clean historical balance to lock so the mechanism is chosen for you

The Bottom Line

Closed-cash and closing accounts answer the same question and allocate intermediate risk to opposing parties. Closed-cash buys certainty and eliminates post-closing dispute at the cost of the buyer accepting operational risk it cannot control. Closing-cash accounts preserve accuracy at the cost of a process that the seller must argue from the outside

Numbers make trading concrete. In a company valued at 500 million with 120 million of net debt and a six-month gap a company that generates 25 million of cash against a ticker of 6 percent leaves the seller about 13.7 million worse off under a closed box. The gap between cash generation and the tick rate is the whole game and everything else in the mechanism scaffolds around that comparison

Neither is more sophisticated than the other and the right choice is usually dictated by whether the target has a recent clean balance worth blocking