The company was active from 1919 until 25 August 1923 when Giovanni amalgamated it with 'Società Ceirano Automobili Torino (S.C.A.T.
[2] In October 1898 Giovanni Battista and Matteo co-founded Ceirano GB & C and started producing the Welleyes motor car in 1899.
In July 1899 the plant and patents were sold to Giovanni Agnelli and produced as the first F.I.A.T.s - the Fiat 4 HP.
Giovanni Battista was employed by Fiat as the agent for Italy, but within a year he left to found Fratelli Ceirano & C. which in 1903 became Società Torinese Automobili Rapid (S.T.A.R.)
In 1906 Matteo left Itala to found S.P.A. (Società Piemontese Automobili) with chief designer, Alberto Ballacco.