[1] He was elected to the Parliament of Norway in 2009 and led the Standing Committee on Scrutiny and Constitutional Affairs from 2013 to 2017.

After finishing primary school, Kolberg attended Oslo Technical College, but later dropped out.

[2] From 13 July 1995 to 25 October 1996, Kolberg was state secretary at the Office of the Prime Minister under the third cabinet Brundtland.

Kolberg reacted with anger and frustration, and the media portrayed the matter as Jagland firing his best friend.

[3] Five days later, Kolberg was appointed state secretary in the Ministry of Defence, where he remained until the cabined withdrew on 17 October 1997, following the defeat in the 1997 election.