The text below, taken from the link in my answer, explains what is "financial interest" (INTERESSE FINANCEIRO):
"Insurable interest is a person's or entity's real financial interest in an object; the interest being the fact the person or entity will suffer financially if the insured object is damaged or destroyed."
As Marlene points out, if there are several named insured people (SEGURADOS NOMEADOS) or entities in a policy, the "first named insured" (PRIMEIRO SEGURADO NOMEADO) is the first name on the list.
http://www.austinstanovich.com/pdf/Articles/Insurable-Intere...