The main purpose of the Enhancing Multi-Class Share Disclosures Act is to improve transparency regarding companies that have a multi-class stock structure. This type of structure allows different classes of shares to have varying voting rights, which can affect how decisions are made within the company. The Act aims to ensure that shareholders have access to important information about who holds voting power and how much influence they have in the company. Key provisions of the Act require companies with a multi-class share structure to provide specific disclosures in their proxy materials.