Italian painter who studied in Modena at the Regio Istituto di Belle Arti (1914-20) and in Florence at the Accademia di Belle Arti (1920-22). In 1924 he settled in Milan, where he joined the Piero Marussig and Achille Funi circle. After having studied the work of Cézanne in Paris, Reggiani began to concentrate on semi-rural themes and, in 1929, he took part in the second exhibition held by the Novecento group in Milan. On returning to Paris in 1930, he discovered the work of Hans Arp and the De Stijl painters which led him to explore Cubist structures. In 1935, he began giving lessons at the Accademia di Belle Arti in Brera and experimented with the biomorphism of Enrico Prampolini. His service in the Second World War prevented him from painting for six years and, in 1943, his studio was destroyed and many of his works with it. After the war, he returned to teaching and the rectilinear nature of his previous paintings was now replaced by intensely coloured planes exploding in the air. After the mid 60s, these in turn were replaced by more reduced schemes with horizontal and vertical bars which led to his final grid paintings.