This Standard Document has integrated notes with important explanations and drafting and negotiating tips. Get full access to this document with Practical Law.A short form agreement for the purchase and sale of all or substantially all the assets of a private US corporation, drafted in favor of the buyer. Draft your next sellside asset purchase agreement using this annotated proseller short form asset purchase agreement. A simple form asset purchase agreement (APA) for the sale and purchase of a small business, operating from a single freehold site, as a going concern.