Umbrella insurance in 2019 and 2020

[Paul M.]

My employer has 25 buildings, and the umbrella insurance renewal thhis spring is a 55% increase.    Our broker has told us the umbrella market has tightened considerably due to poor loss experiences for residential and all of her client's umbrella premiums have gone up.   Our previous umbrella carrier actually dropped us due to underwriting guideline changes.   We've never filed a claim on an umbrella policy.   We have filed claims on primary policies.   I have no reason to doubt what she is saying just looking for some confirmation of other's experience.  I don't really understand what was special about the last 12 months (according to her narrative the tightening started before Covid 19) then the years prior to that.