Can HTC One M8 Sprint be unlocked for Verizon?

[AC Question]

Hello Android Community, I have returned for yet another question. Can the HTC One M8 Sprint be unlocked for Verizon? I recently check around the Android Community across the internet and they all say it can be unlocked, but can a Sprint phone be unlocked for Verizon, in particular a phone with a SIM's card?
I would appreciate any help for my question, and if it's possible to move from Sprint to Verizon, would you leave a description/link to best method of unlocking.