Large stock dividends are distributions of additional shares to existing shareholders, typically issued when a company gives more than 20-25% of its existing shares as dividends. This type of dividend often leads to a reduction in the par value of the stock and is used by companies to increase the number of shares outstanding while retaining cash. Unlike cash or small stock dividends, large stock dividends do not impact the company’s total equity but change the per-share value, as more shares are distributed among existing shareholders.