When must a Liechtenstein company report its beneficial owners?

Within 30 days of its entry in the commercial register, and changes within 30 days of the company learning of them. The report goes to the Office of Justice's register of beneficial owners (VwbP) and includes a Liechtenstein address for service. Your local board member usually files it.

Source: Law on the Register of Beneficial Owners of Domestic Legal Entities (VwbPG), Lilex, Liechtenstein legal database