Mergers and Acquisitions: What Happens to Your Shares When the Company Is Bought

Between the announcement and the close sits a distinctive limbo: the target trades at a discount to the offer, votes and regulators decide the deal's fate, competing bidders occasionally appear, and sometimes the whole thing collapses. This article explains what each deal structure delivers to a target shareholder, why the market price sits below the offer price and what that gap measures, what the documented evidence says about acquirer shareholders' side of the bargain, and the mechanical sequence from announcement to the day the shares vanish from an account and the consideration appears. Mechanics and evidence, per the pillar rule — nothing here is guidance on any deal, spread, or vote.

The three structures, from the target holder's side

Cash deals are the clean case: the agreement fixes a per-share cash price; at closing, shares are cancelled and cash is deposited, with no action required from the holder — conversion is automatic through the settlement machinery. The holder's decision space during the pendency is simply sell now at the market price or wait for closing at the offer price, bearing the deal's risk and timeline; the tax character of the forced sale is jurisdiction-dependent and parked, per the standing rule, for the tax annex. Stock deals pay in the acquirer's shares at a fixed exchange ratio — say 0.75 acquirer shares per target share — so the offer's value floats with the acquirer's price between announcement and close; the target holder becomes a shareholder of the combined company, keeping equity exposure rather than being cashed out, and some agreements add collars that adjust the ratio if the acquirer's stock moves beyond set bounds. Mixed and election deals offer cash, stock, or a choice — with the fine print that elections are usually subject to proration: if too many holders choose the same option, everyone electing it receives a blend, so the election form is a preference, not a guarantee. Across all three: fractional entitlements are settled in cash, dissenting holders in many jurisdictions have appraisal rights (a court-supervised process for arguing the price was inadequate — a specialist path noted here, not described), and the merger agreement — a public document — specifies every term this paragraph summarised.

The deal spread — what the gap between price and offer measures

The day a $30-per-share cash offer is announced for a stock trading at $22, the price jumps — but typically to something like $28.50, not $30. That persistent gap, the deal spread, is one of the market's cleanest readable numbers: it prices time (cash at closing in nine months is worth less than cash today) and risk (the probability the deal dies — votes fail, regulators block, financing collapses, or a MAC — a material-adverse-change clause — is invoked, a rarely successful but famous escape hatch). A narrow spread says the market considers closing near-certain; a wide or widening one says doubt, and a target trading above the offer says the market expects a higher bid — competing offers and bidding wars are documented, recurring events, and the agreement's termination fees (payable by either side for walking away) are part of what any rival must price. Harvesting these spreads is the documented specialty called merger arbitrage, practised by event-driven hedge funds whose collective activity is a large part of why announced targets trade where they do — described here as market structure, not as a technique, because the spread's other name is the loss an arbitrageur takes when a deal breaks: on a collapse, the target typically falls back toward its pre-announcement standalone value, sometimes below it. For the acquirer's shareholders, announcement day runs the other way on average: the documented pattern across decades of deals is that targets capture most of the measurable gains (their price jumps toward the premium) while acquirers' returns on announcement average around zero to modestly negative — the "winner's curse" literature on overpaying in competitive auctions, integration risk, and the dilution arithmetic of stock-funded deals all belong to that evidence base, reported with the standard caveat that averages conceal wide dispersion and say nothing about any specific deal.

The sequence — announcement to disappearance

The mechanical path: announcement (agreement signed, terms public); approvals — target shareholder vote (majority thresholds vary by structure and jurisdiction), any acquirer vote if required, and regulatory review, where competition authorities in every affected major market can clear, condition (divestitures), or block — the step responsible for most long timelines and a live source of deal risk that the regulators article contextualises; closing, on which trading in the target halts, the ticker retires, and consideration is delivered to accounts automatically within days; or alternatively termination, on which the target reverts to standalone trading and any agreed fees flow. Hostile approaches — offers pursued without the target board's agreement, typically via a tender offer directly to shareholders — are the exception to the negotiated path and are covered in the tender-offers article. A holder's practical takeaways are deliberately modest: the merger agreement and proxy materials are public and state the consideration precisely; election deadlines, where they exist, are real deadlines with proration fine print; and nothing else in the process requires holder action — the machinery converts positions automatically, which is exactly why understanding what arrives, and when, is the useful literacy.