Merger Last updated: 7 December 2023. Merger is when two or more companies join together. Merger by absorption Merger by formation of a new company Merger between a parent company and a wholly owned subsidiary Merger between companies with the same owner Triangular merger Cross-border merger Revoking a merger One or several companies transfer all assets, rights and liabilities to an acquiring company. A merger between limited companies is conducted through a two-step process.