Abdullah ah-Zaher became the youngest person given the death sentence, according to campaigners Reprieve.
Campaigners claim Abdullah ah-Zaher, who attended the protest four years ago was put on death row as part of a crackdown on political dissent.
The 19-year-old has been moved to solitary confinement and could be beheaded at any moment.
Despite possible repercussions, his family have gone public with his story, in a final bid to save his life.
The Emergency Election Sale is now live! Get 30% to 60% off our most popular products today!