On Apple OS X Mountain Lion's Privacy Page you can request and collect all the privacy and GDPR related information that Apple OS X Mountain Lion is providing.
The privacy policy by is a legal document or statement that discloses how Apple OS X Mountain Lion gathers, uses, discloses, and manges their customers' data.
The basis for Apple, Inc sharing, adding, uploading, hosting, accessing or sending personal data out of Europe. Vendors can also add a description of their own impact assessment for data transfers.