Does the NSO Group’s Pegasus malware compromise chats and voice calls in Signal as well?

I am aware that the Pegasus malware is capable of extracting contact lists, ordinary text messages, switching on microphone / camera remotely etc. Is it also capable of extracting the contents of communications made via Signal? This is of particular importance for people who may be targeted by Pegasus, since Signal is becoming so widely used as a secure channel of communication…

My question is primarily concerned with Android users, but if iOS can also be covered that would be great.