[1] Bødtker was manager for Norsk Investment from 1917 to 1923, and for Andresens Bank in 1919, and from 1920 for the combined Forretningsbanken.

[1] He was a passionate art collector, and collected a number of paintings, by artists such as Reidar Aulie, J. C. Dahl, Kai Fjell, Per Krohg and Edvard Munch.

[1] Of his large collection of modern art, eight of the paintings were testamentary donated to the National Gallery.

Norway was invaded and occupied by Nazi Germany in 1940, and because the National Theatre's board did not abide to the directions from the Nazi government, Bødtker, along with board members Harald Grieg, a publisher, and Francis Bull, a professor of literature were arrested in 1941.

[5][6] Sejersted Bødtker was decorated as a Knight, First Class of the Royal Norwegian Order of St. Olav in 1912.