Thanks for the input so far. The best option might be to pursue the Carlsberg angle, since I also think that this must be studio glass of some kind. We have a lot of smaller glass studios around here that make glass, but I haven't found one yet that has a name that looks like the signature.
Also, I am 99% confident that this is not Michael Bang. Living here in Denmark, I've seen quite a bit of his Holmegaard work and it is signed differently, and looks differently.
Thanks for the suggestions so far!