Reina publicly called for Hicks and Gillett to go long before current owner John W Henry took over last October.
The 29-year-old also admits he would have liked Gerrard and Carragher to have taken a similar stand.
Reina said in his new book, Pepe Reina: My Autobiography: "I was probably one of the loudest objectors because I believed it was important the supporters knew I was with them.
"All I wanted the owners to do was sell up to people who could take the club forward, so I said so.
"The way I saw it, Stevie and Carra are the two principle members of our squad, the ones who the people love and if they had said something maybe it would have put Hicks and Gillett under real pressure.
"But in their view, it was more important to try to keep things as normal as possible."