An SE is incorporated under EU law, and it has a headoffice registered in a member state - and that registration can be moved to another member state. Like GDPR, the relevant law is an EU "regulation" and not a directive. Directives need to be implemented in local laws, regulations apply directly (local laws may fill in details as long as they don't contradict or restrict the regulation, except of course where the regulation explicitely allows derogation).
https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CEL...
What do you mean by "sponsored by the member state"? Can you point to the exact regulation, treaty or directive that imposes this requirement?
What do you mean by "sponsored by the member state"? Can you point to the exact regulation, treaty or directive that imposes this requirement?