You (or the purchaser or transferee) must complete Form CBS-1, Notice of Sale, Purchase, or Transfer of Business Assets. A buysell agreement is a legally binding contract that sets out the terms of how business partners will manage their ownership if one of them leaves.In this guide, we will explain what buying out a business partner means, how to prepare to buy out a business partner, and more. In Mexico, a business can be purchased through a share purchase, an asset purchase, a merger or a combination of those transactions. In this ultimate guide, we will unravel the mysterious world of buyout agreements and show you stepbystep how to navigate them like a pro. Treaty Trader (E-1) and Treaty Investor (E-2) visas are for citizens of countries with which the United States maintains treaties of commerce and navigation.