so can i root and twrp or not. new to motorola

I just picked up a droid ultra Verizon. got 4.4.4
build num su5-24
sys version 23.3.24
been reading pretty hard but I’m used to lg g2 g3 and still g4. sow can I downgrade and unlock bootloader or is it possible to unlock at current versions. I really can find any straight answers .
sorry for soundin nubish like I said just new to moto devices never even played with one before