Quoting Joachim Lund in Industrial Collaboration in Nazi-Occupied Europe: Norway in Context, page 209:

Members of the collaborating governments were protected by immunity and could sit back and wait while a parliamentary committee spent ten years investigating their actions during the war. It found no reason to impeach any of them on the grounds of treason. A number of civil servants fared worse and were discharged for having behaved in a manner “incompatible with the interests of the nation,” and 1,148 industrialists received prison sentences for having been too eager in attracting [Axis] orders and expanding their business to meet [its] demands. Among them was Gunnar Larsen, minister of public works 1940–45 and manager of the market leading cement and machine corporation F. L. Smidth & Co. Just over 10,000 businesses were found to have violated the price laws and were made to repay profits exceeding 5% to the National Bank. There were no legal steps against decision makers in agriculture and related organizations, which is perhaps a paradox.

(Emphasis added.)

Unfortunately, the author did not specify how many of these prison sentences actually went into effect as planned. He notes at the end of the page:

Larsen was later acquitted by the High and Supreme Courts. He was, however, expelled from F. L. Smidth & Co. and went into exile. […] Individual trade organizations such as the Engineers’ Association chose to establish courts of honor in order to weed out collaborationists. How Danish industrial firms dealt with their wartime collaboration in general awaits further investigation.