*1865: Founded at Rue des Fabriques, Molenbeek.
*1875: Louis De Coster operated at Rue Notre-Dame-du-Sommeil 75.
*1892: Louis & Emile De Coster assume ownership.
*1916: Moved to a new, larger brewery installation; from Rue Verrept-Dekeyser 9 to Quai du Haunaut 39-65, Molenbeek.