A stock-for-stock merger is a type of corporate merger where the acquiring company offers its own shares to the shareholders of the target company in exchange for their shares. This arrangement allows the shareholders of the target company to become shareholders in the acquiring company, often leading to a consolidation of ownership and resources. It is considered a non-cash transaction since no cash is exchanged during the process, emphasizing the importance of proper supplemental disclosures to convey the fair value of the exchanged stock.