I don't have many shares but I just finished the form. If I were to get more shares would I need to still buy them on Cryptostocks and fill out the form again with the new number of shares?
No need to do it again since the issuer knows then already the bitcoin address you want it attached to and you were verified by email i guess. So the issuer only needs to check the newest list sent from cryptostocks and will know that something changed and he can adapt.
Again a reminder to shareholders that filled the form. Since
there are still 4 users who filled the form, put their bitcoin address and email address in there but did NOT check the email address's inbox. There is an email in the email address inbox that you use for cryptostocks. Check it and answer to it to verify that the real owner of these shares claimed them. That's important!