Other names in this document: Shareholders` agreement, investment agreement Start with the conclusion of a formal investment agreement by writing an opening statement. This section should indicate the purpose of the agreement and who the parties to the transaction are. Write here the full name of the company and the investor and indicate the address of both parties. Also write down the date on which the agreement will be written. The opening declaration is normally the “this investment agreement was inserted on (insert date) between (insert the full name of each party)”, depending on the nature of your investment agreement. Information on the parties involved is necessary to obtain the validity of the agreement. .