If you're a private investor in MiProfile LLC, you're known as a subscriber. 

A Subscription Agreement is a promise by MiProfile LLC to sell a given number of shares to an investor at a certain price, and an agreement by the investor to pay that price.  

Whether you're an individual private investor or a company that's investing in MiProfile LLC, a Subscription Agreement spells out the details of the transaction, including the price and agreed-upon amount of the shares. 

If you're the investor, you can protect yourself against MiProfile LLC changing the terms of the agreement at the last minute. 

A Subscription Agreement turns MiProfile LLC promise into a real transaction.