You must claim your domains to be able to transfer them.
Step 1: Go to My Domains and select Manage
Step 2: Select Transfer
Step 3: Upload keystore file and enter your passphrase
Step 4: Enter the public address you would like to transfer the name to.
Disclaimer: A transfer is final. Do not send your domains to an exchange address.
Step 5: Complete! The transaction will confirm on the blockchain and then the domain has been transferred.