Ubuntu Technical support.
On Canonical's Privacy Page you can request and collect all the privacy and GDPR related information that Canonical is providing.
The basis for Canonical Group Limited 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.
Subprocessors are companies that provide a service for Canonical Group Limited and who has or potentially will get access to personal data of their customers.