In 1862 Thomas S Falck sold out in England and moved back home to Stavanger, where he established a shipping company. Over time, this represented one of the largest shipping fleets in the country, both in terms of tonnage and the number of ships. Thomas S. Falck also carried on wholesale trading and exporting of fish, herring and prawns, and imported salt. The company owned several fishing vessels and was an important herring salter. It also owned fish landing facilities at several locations in Island and along the Norwegian coast. Thomas S Falck died on his farm, Hillevaag Gaard, in 1889.
His son, Christian Fredrik Falck, took over the company and continued in the same line of business. During the difficult times after World War I, the shipping business was discontinued although the company continued as a wholesale trader and shipping agent.