Learn Italian: Ribadiscono che firmano il loro verbale, ma non il tuo. - They reiterate that they are signing their minutes, but not yours.

If this were direct speech, the speakers would say: "We are signing il nostro verbale" (our minutes). Because we are reporting what they said using indirect speech, il nostro shifts to il loro (their). The phrase il tuo (yours) doesn't shift, assuming the speaker is reporting the sentence to the same person the original speakers were talking to.

Why is the article il used before loro?

In Italian, loro is both the subject pronoun "they" and the possessive adjective "their". Unlike other possessives, loro is invariable, meaning its ending never changes. However, you still must use a definite article that agrees with the noun it modifies. Here, il matches the masculine singular noun verbale.

Why does verbale translate to "minutes" here instead of something about speaking?

As an adjective, verbale does mean "verbal" or "spoken". But as a noun, un verbale refers to a formal written record of spoken words, such as the "minutes" of a meeting, an official transcript, or a police report.

Why does the sentence end with just il tuo instead of repeating the noun?

Just like in English when we say "not yours", you don't need to repeat the noun if it's obvious from the context. Here, il tuo acts as a possessive pronoun replacing il tuo verbale. Notice that Italian still requires the definite article (il) even when the noun is dropped.