An asset purchase agreement is the legal document that will govern the transfer of ownership of a business's assets from the seller to the buyer. Secure your San Antonio small business's transactions today!Our asset purchase agreements from Dan Burke are created to account for all of your assets. This guide will break down the ins and outs of asset purchase agreements for multiple owners, making this complex legal topic more digestible and actionable. Parties and Recitals. Click on Supplier Portal Registration in the navigation bar and login from there. • Information needed for Registration:. An Asset Purchase Agreement is a legally binding contract between a buyer and a seller that details the terms and conditions of the sale of a business's assets. An asset purchase agreement (or APA) is a binding document between a buyer and seller for the purchase and sale of a company's assets. You may fill out the change of address form or simply make the request in writing.