With Helsinki's new status as capital trade picked up considerably and a number of businessmen from Hamina on the former eastern border settled there. Feodor P. Kiseleff was one of them; he moved in 1811.
     The Russians that came to the capital lacked civic rights and permits for business activities. Kiseleff, just like all the other Russian businessmen, had to pay fines for flouting these regulations. He received the rights of establishment in Helsinki in 1813.

      Kiseleff bought the sugar factory in 1812. He also worked as a contractor, ship-owner, and a brick manufacturer. He was elected one of the city counsellors in 1829. The commercial counsellor Kiseleff died in 1847. Following his death, the sugar factory was taken over by his sons Nikolai and Feodor. The younger son was a skilful and enthusiastic director. During his time there the factory was enlarged and steam power was introduced.