Supreme Court investigating judge Pablo Llarena has decided to send 25 Catalan separatist leaders, including the former First Minister, Carles Puigdemont, to trial on charges of rebellion, contempt and misuse of public funds, the court confirmed in documents.

Mr. Puigdemont, along with eight former members of his regional government—Oriol Junqueras (Deputy First Minister, economy), Joquim Forn (interior), Jordi Turull (spokesman), Raul Romeva (foreign affairs), Antoni Comin (health), Dolors Bassa (work and social affairs), Clara Ponsatí (education), and Josep Rull (territory)—will be tri...