GRAMMOS S.A. was founded on May 11, 1999. The company's seat is in the municipality of Filiata, prefecture of Thesprotia.

GRAMMOS S.A. operates as an integrated fish farming unit in two sea parks, "A" and "B", of a total sea surface of 1.5 acres and 2.25 acres respectively, in the Hasomeri area, Lorida Sagiadas, of the Prefecture of Thesprotia. The capacity of these parks is 550 tons.