# Reverse merger

> A transaction in which a private company becomes public by merging into an existing public company, bypassing a traditional IPO.

Source: https://www.quantisnow.com/glossary/reverse-merger
Topic: Glossary / Mergers and acquisitions
Also known as: reverse takeover, reverse merger transaction, RTO
Last updated: 2026-10-27

A reverse merger is a transaction in which a private company merges with an existing public company so that the private company's owners end up controlling the combined, publicly traded entity. It gives the private company a listing without running a traditional [IPO](https://www.quantisnow.com/glossary/ipo).

## How it works

The public company issues a large block of new shares to the private company's owners in exchange for their business. After closing, the private company's holders typically own most of the combined company, often 75% to 90% or more, and its management takes over. The combined company frequently changes its name and ticker and often does a [reverse stock split](https://www.quantisnow.com/glossary/reverse-stock-split).

The public partner is often a shell with little operating business, or a struggling company, especially a small-cap biotech whose lead drug failed but that still has cash and a listing. Biotech reverse mergers are commonly paired with a concurrent [PIPE](https://www.quantisnow.com/glossary/pipe) to fund the combined company. Exchanges treat a reverse merger with a change of control as a new listing that must meet initial listing standards, and the combined company files an 8-K with full information about the new business (often called a "super 8-K").

## Why it matters for traders

Announcements can trigger huge, short-lived spikes in microcap shells, especially when the float is tiny. Existing holders of the public company are usually heavily diluted: their share of the combined business is small. Watch the ownership split, the size and price of any concurrent financing, whether legacy holders receive a CVR (a contingent value right tied to old assets), and lock-up terms for new insiders.

## Example

Hypothetical Northwind Therapeutics (NWTX) has $30 million in cash after a failed Phase 2 trial and a $25 million market cap. It agrees to a reverse merger with private Contoso Bio, whose holders will own 85% of the combined company, alongside a $100 million PIPE. Legacy NWTX holders end up owning about 15% before the PIPE shares, and less after.

## FAQ

### Is a reverse merger the same as a SPAC deal?

They are similar in effect. A [SPAC](https://www.quantisnow.com/glossary/spac) is a shell formed specifically to raise cash in an IPO and later merge; a reverse merger usually uses an existing operating or failed company.

### Are reverse mergers good for existing shareholders?

They are usually highly dilutive for the public company's legacy holders, who end up owning a small minority of the combined company.

## Related terms

- [SPAC (special purpose acquisition company)](https://www.quantisnow.com/glossary/spac.md): A shell company that raises cash in an IPO and places it in trust to acquire a private company, which becomes public through the merger.
- [De-SPAC](https://www.quantisnow.com/glossary/de-spac.md): The merger in which a SPAC combines with a private operating company, turning that company into a publicly traded business.
- [Initial public offering (IPO)](https://www.quantisnow.com/glossary/ipo.md): The first sale of a private company's shares to the public, after which the stock lists and trades on an exchange such as Nasdaq or the NYSE.
- [PIPE (private investment in public equity)](https://www.quantisnow.com/glossary/pipe.md): A private sale of a public company's stock or convertible securities to selected investors, usually at a discount, registered for resale later.
- [Reverse stock split](https://www.quantisnow.com/glossary/reverse-stock-split.md): A corporate action that combines existing shares into fewer shares at a higher price, often used to regain compliance with exchange minimum bid rules.
- [Dilution](https://www.quantisnow.com/glossary/dilution.md): The reduction in existing shareholders' ownership percentage and per-share claims on earnings when a company issues new shares.

## On Quantisnow

- [Mergers and acquisitions news](https://www.quantisnow.com/guides/mergers-and-acquisitions-news)
- [Mergers and acquisitions](https://www.quantisnow.com/categories/mergers-acquisitions)
- [SEC Form 8-K filings](https://www.quantisnow.com/categories/8-k)
- [Live feed: Offerings](https://www.quantisnow.com/news/offerings)