Getting the founding deed ready
In Italy a company is born from a deed that a notary writes and signs, the atto costitutivo. The notary keeps the original, so it never leaves the country. What travels is a copy the notary marks as true. To apostille an Articles of Incorporation in Catania, that copy should come from a notary whose office sits in this court district.
Notary copy or register extract?
Before you ask how to apostille an Articles of Incorporation, settle which paper you will use. A notary's certified copy is a notarial act, so the Procura della Repubblica at the court adds the apostille. An apostille is one stamp that proves the notary's signature and seal are real. An extract from the business register is a plain record, and plain records go to the Prefettura.
Look the copy over before it leaves your hands. It must carry the notary's seal, a signature and the line saying it matches the original. Loose pages fail. So does a scan you printed at home. If the reader abroad named a kind of copy, follow that wording, because swapping one for another means starting over.
What the stamp costs
The state fee is a tax stamp of €16 per document, and some papers are exempt. The apostille cost for an Articles of Incorporation in Catania is that same stamp. It is charged by the document, not by the page, however long the deed runs. What the notary asks for the copy sits outside it. The court gives no fixed wait, so leave room in your plan.
Why firms need it abroad
Firms send the deed abroad to open a branch, to sign a lease, or to show a bank that the company is real and who may sign for it. Tender boards and trademark offices ask for it too. Italy has been in the Hague Convention since 1978, so a member state takes the stamp at face value.
Language and what the reader wants
You can apostille an Articles of Incorporation in Italy while the text stays in Italian, because the stamp says nothing about language. Many readers abroad still want a sworn translation beside it. Ask that office in writing what it needs. Whether the stamp alone is enough depends on the country, so check first.