When residing in Denmark you are subject to world wide taxation of income. All income including non Danish income must be reported and taxed in Denmark unless a double taxation treaty states otherwise.
Further you have to report all foreign financial values including real property, securities,, bank accounts, deposits, pensions and insurances with surrender value. Disregarding this reporting obligation might create problems in the long term.
Some securities in placed in institutions which are accumlating values and being thus non dividens paying are in many cases subject to taxation on an accrual basis instead of the normal realisation basis.
Danish has an extensive exit taxation of unrealized gains on a number of assets when relocating from Denmark after a certain numbers of years in Denmark.
If you need help then contact Inwema at firstname.lastname@example.org