SEC Form 425

DEFINITION of 'SEC Form 425'

The prospectus form that companies must file to disclose information regarding business combination transactions. A business combination can refer to a statutory merger between two or more companies or a statutory consolidation. Companies are required to file prospectus form 425 in accordance with rules 425 and 165 of the Securities Exchange Act of 1933.


There are five commonly-referred to types of business combinations known as mergers: conglomerate merger, horizontal merger, market extension merger, vertical merger and product extension merger. The term chosen to describe the merger depends on the economic function, purpose of the business transaction and relationship between the merging companies.