Building Collars Into a Floating Share Exchange Near Goderich

The situation

Joao had spent fifteen years as the finance lead of a Goderich manufacturer that made specialty components for the agricultural equipment sector, working his way from staff accountant to chief financial officer as the company grew from a regional supplier into one with customers across three provinces. Carlos ran sales and had built most of the relationships that made the company worth acquiring in the first place. When a larger, publicly traded competitor approached about a merger, the plan the two of them put to the board was simple on paper: the Goderich company's shareholders would receive shares in the acquirer, valued at a ratio fixed to both companies' trading prices in the weeks before signing, and the combined business would close within roughly ten weeks.

The commercial logic was sound. The acquirer wanted the Goderich company's manufacturing capacity and customer base, and the Goderich shareholders wanted exposure to a larger, more liquid stock rather than a cash payout that would trigger an immediate tax bill. Ishara, negotiating for the acquirer, had proposed a fixed exchange ratio: for every Goderich share, holders would receive a set number of acquirer shares, calculated once, at signing, and locked in. On a transaction sized in the $30 to $50 million range, that structure looked clean and easy to explain to both boards.

The problem was the calendar. The merger needed sign-off from a government agency before it could close, and the agency's review queue was running well behind its usual pace that quarter. What both sides had budgeted as a ten-week gap between signing and closing stretched, without warning, toward six months. A fixed exchange ratio assumes the gap between signing and closing is short enough that share prices will not move much. Six months is not short. Joao raised the concern with the board before anyone had signed anything: if the acquirer's stock fell over that stretch, Goderich shareholders would receive shares worth less than what they had agreed to. If it rose sharply, the acquirer would be handing over more value than it had bargained for, and might look for a way out.

Carlos put it more bluntly in the same meeting: neither side could control the government's timeline, and neither side should have to bet six months of stock market movement on a number fixed on a single afternoon before anyone knew how long the wait would actually be.

The problem

A fixed exchange ratio locks in how many acquirer shares each Goderich share converts into, set once at signing. It works well when signing and closing happen close together, because there is little time for either company's share price to drift. Once the regulatory timeline stretched past the range either side had planned for, that structure stopped protecting anyone. If the acquirer's share price dropped over the following months, Goderich's shareholders would still receive the same fixed number of shares, now worth less in real terms than what they had agreed to sell their company for. If the acquirer's share price climbed instead, the acquirer would be issuing shares worth considerably more than the deal had been priced at, and its own board would come under pressure to renegotiate or abandon the transaction rather than absorb the extra cost.

Either direction created real risk of the deal collapsing entirely, not because the underlying business case had changed, but because a number fixed months before closing no longer reflected reality. Renegotiating a signed agreement mid-process, while a regulator's review clock kept running independently, would have meant reopening every other term in the agreement as well, since neither side would have accepted a change to only one clause. That risked losing the deal altogether, after both companies had already spent months and real money on due diligence, or closing on terms that one side felt had become unfair through no fault of its own.

The underlying issue was that the exchange ratio and the regulatory timeline were tied to each other, but nobody had built a mechanism connecting them. The transaction needed a way to let the ratio respond to genuine market movement over an uncertain waiting period, while still giving both boards a floor and a ceiling they could rely on when they voted to approve the deal in the first place. Without that mechanism, the only tools available once prices moved were renegotiation, litigation over whether either side was still bound, or walking away, none of which served either company's shareholders.

There was also a practical timing problem underneath the legal one. Ishara's team had already circulated the fixed-ratio structure to its own board for preliminary approval, and unwinding that approval to introduce a more complicated mechanism risked reading, internally, as a sign that the Goderich side was getting cold feet or trying to extract better terms. Joao and Carlos needed a way to raise the concern that framed it honestly, as a shared problem created by the regulator's timeline rather than a renegotiation of value, since the moment either board suspected the other of using the delay opportunistically, the goodwill that had carried the negotiation this far would be difficult to rebuild.

What we did

1. Proposed a floating ratio calculated against a trading average, not a single day's price. Instead of fixing the number of acquirer shares at signing, we structured the exchange ratio to be recalculated shortly before closing, based on the average of the acquirer's share price over a set window of trading days. This meant a single unusual day in the market, on either side, could not distort the whole transaction, since the ratio would reflect a genuine trend rather than a snapshot.
2. Built an upper collar to protect the acquirer. We negotiated a ceiling on how many shares the acquirer could ever be required to issue, regardless of how far its own stock price fell before closing. This meant Goderich's shareholders bore some of the downside risk if the acquirer's shares lost significant value, but it also meant the acquirer's board could commit to the deal knowing its maximum dilution was fixed and known in advance.
3. Built a lower collar to protect the Goderich shareholders. We negotiated a floor on the value of shares Goderich's owners would receive, so that if the acquirer's stock price rose sharply, the number of shares issued would adjust downward proportionately, preserving the value Goderich shareholders had bargained for without handing them a windfall unrelated to the deal. This mattered just as much as the upper collar, since a floor left unnegotiated could have left Joao and Carlos's side absorbing a shortfall the deal was never meant to create.
4. Added a walk-away band tied to extreme moves outside both collars. Beyond the collars sat a further threshold: if either company's share price moved so far that the collars themselves would produce an outcome neither side had actually agreed to, either party could walk away without penalty. This kept both boards from being locked into a transaction if the market genuinely repriced one of the companies during the wait.
5. Documented the calculation mechanism in detail, not just the outcome. We specified exactly which trading days counted, how the average was computed, what happened if trading was halted on any of those days, and who calculated the final number. A collar that leaves the calculation method vague invites a dispute exactly when the parties can least afford one, in the final days before closing.
6. Kept the board informed as the regulatory timeline extended. As the agency's review stretched past four months and then five, we briefed Joao and Carlos on how the collar mechanism was performing against real market movement, so the board could see, month by month, that the structure was doing its job rather than simply hoping it would hold until closing.
7. Framed the proposal to Ishara's side as mutual protection, not renegotiation. We helped Joao present the collar structure to the acquirer's team as a mechanism that protected both companies equally from a timeline neither side controlled, rather than as Goderich seeking a better price. That framing mattered, because a proposal read as opportunistic tends to invite resistance on principle, while one read as fair risk-sharing tends to get evaluated on its merits.

The outcome

The regulatory review ultimately took just under six months, roughly three and a half months longer than either side had planned for at signing. Over that stretch, the acquirer's share price moved meaningfully, first climbing, then giving back most of the gain as broader market conditions shifted. Under a fixed ratio, that swing would have handed Goderich's shareholders a windfall at one point and a shortfall at another, either of which would have given one board or the other grounds to reconsider the deal. Under the floating ratio with collars, the exchange adjusted with the trend and stayed inside the range both boards had approved months earlier.

The deal closed on the recalculated ratio without either side needing to reopen negotiations. Goderich's shareholders received acquirer shares valued close to the original deal terms, inside the lower collar's protection, and the acquirer issued a number of shares comfortably within the upper collar it had budgeted for. Neither the walk-away band nor a renegotiation was ever triggered, which was the quiet, unremarkable outcome the whole structure had been built to produce.

What made the difference was not a clever prediction about where markets would move. Nobody on either side knew, at signing, whether the acquirer's stock would rise or fall, or by how much, or that the regulatory wait would run to nearly six months instead of ten weeks. The collar structure did not require that knowledge. It only required both sides to agree, before the uncertainty arrived, on how much movement each was prepared to absorb before the deal itself was back on the table. That agreement, reached calmly at signing, is what let the transaction survive a delay neither company had any ability to control.

For Joao and Carlos, the more lasting lesson had less to do with markets than with process. Both had gone into the negotiation assuming the regulatory review would be a formality, a box to check on the way to a close both sides had already agreed to in substance. Building the collar mechanism forced an earlier, harder conversation about what could realistically go wrong between signing and closing, a conversation that turned out to matter far more than the ratio math itself. By the time the review dragged on, that conversation had already been had, and the deal simply followed the terms both boards had approved with clear eyes.

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