Amarin Corp Plc (AMRN)

[TastyTheElf]

There is a base price at which Amarin sells Vazkepa to Recordati.  That base price has a lot of margin in it  -- at least 40%.  Amarin is not selling Vazkepa to Recordati at production cost!
Then there is a royalty, which is NOT expressed as a percentage.  It's xx% of the gross sale to third party price MINUS the base cost.  That probably works out to an effective royalty of somewhere between 5% and 10%.
Then finally there are sales milestones on top.
If you work through all the numbers, Recordati gets $1 for every $2 Amarin gets in profit.  And that is a stellar deal for both parties.