Which text is the live one
Company bylaws, the statuto in Italian, are the rulebook your firm runs by. Meetings, votes, share transfers and the power to sign all sit in that text. Shareholders can change it, and each change is minuted by a notary. So the version worth stamping is the current one. To apostille Company Bylaws in Catania, start by asking which text is live.
The court desk, not the prefect
A notary writes and holds the text, which makes a certified copy of it a notarial act. Notarial acts are stamped by the Procura della Repubblica, the prosecutor's office at the court whose district covers where the act was formed. An apostille is the single stamp that proves the notary's signature is real. The Prefettura, the prefect's local office, takes plain records from town halls, so it is not your door here.
Before you ask how to apostille Company Bylaws, get a copy the notary marks as true to the original. The notary who logged the last change is the one to ask. A page you printed from the register carries no signature, so the court has nothing to check and will send it back.
Cost when the text has moved often
The state fee is a tax stamp of €16 per document, and some papers are exempt. The apostille cost for Company Bylaws in Catania is that stamp on the copy you file, however many clauses it runs to. If you also stamp the founding deed, that is a second document and a second stamp. The notary charges apart for the copy, and no desk gives a fixed wait.
Proving who may sign
A bank abroad reads the rulebook to learn who may sign for the firm and up to what limit. Registrars want it when you set up a branch or a subsidiary. Buyers read it in a data room. Italy has been in the Hague Convention since 1978, so you can apostille Company Bylaws in Italy and a member state will take the stamp as it stands.
Whole text or extract
The stamp does not touch the language, so a reader abroad may want a sworn translation of the whole text. Ask what they need before you book a translator. If the country lies outside the Hague Convention, full legalisation of Company Bylaws in Catania is the longer route, ending at that country's consulate.