What Is a Two-Step Merger?
A two-step merger is a friendly acquisition structure that combines a tender offer with a follow-on merger. In step one, the buyer offers to purchase shares directly from the target's shareholders at a negotiated price. If enough shares are tendered to give the buyer control, step two is a back-end merger that converts every remaining share into the same consideration, delivering 100% ownership.
The structure is used in negotiated deals with the target board's support, which distinguishes it from a hostile tender offer launched over a board's objection. The merger agreement obligates the buyer to commence the tender offer and, once the minimum condition is met, to complete the second-step merger at the identical price, so holders who never tendered are treated the same as those who did.
How the Two Steps Work
Speed is the reason the structure exists. A one-step merger requires drafting a proxy statement, clearing SEC review, mailing materials to shareholders, and then holding a shareholder meeting, a process that commonly takes three to four months. A tender offer must stay open only 20 business days, so a two-step deal without financing or antitrust delays can close in roughly five to six weeks.
Delaware's Section 251(h), adopted in 2013, supercharged the structure. If the tender offer secures more than 50% of the shares, the buyer may complete the back-end merger immediately without any shareholder vote. Before 251(h), buyers needed 90% ownership for a short-form merger and often relied on a 'top-up option,' under which the target issued new shares to push the buyer over that threshold.
Why Two-Step Mergers Matter
Choosing between one-step and two-step structures is a genuine advisory decision. Two-step deals suit all-cash transactions where speed reduces the window for interloper bids and market disruption. One-step mergers remain standard when the consideration includes buyer stock, because registering shares for exchange in a tender offer adds complexity that erodes the timing advantage.
In practice, a typical announcement states that the buyer will commence a tender offer at, say, $45 per share, conditioned on a majority of shares being tendered, followed by a second-step merger under Section 251(h). Interviewers use the topic to test whether candidates understand deal mechanics beyond valuation, including how minimum tender conditions and squeeze-out rules determine how quickly a deal closes.
