Justice A R Joshi on April 11 rejected the bail applications of Sachin Mali, Sagar Gorkhe and Ramesh Gaichor.
The trio was arrested along with another member Sheetal Sathe in April last year after they courted arrest outside the Maharashtra Legislative Assembly.
They were booked under the stringent provisions of Unlawful Activities Prevention Act (UAPA) and various sections of the Indian Penal Code including criminal conspiracy.
According to the trio, they are cultural activists who take up social causes like poverty, corruption, superstition, gender discrimination and so on.
The High Court, however, refused to accept their contention and refused to release them on bail.