Siam is a member of the Academy of Motion Picture Arts and Sciences. His debut, Whose Country?, premiered at the New York Film Festival, followed by Amal, which opened IDFA and went on to win awards at Sheffield and more than 100 festivals. His narrative debut, My Father’s Scent, won five prizes at the Venice Film Festival in 2024, as well as the Audience Award at Red Sea 2025 and the Grand Prize and Cineuropa Award at Cinemamed 2025.

He co-produced SINK (Toronto 2025), participated in My Father and Qaddafi (Venice 2025), and served as executive producer on Chronicles From the Siege (Berlinale 2026). He is currently developing Carnival, supported by Cannes Cinéfondation L’Atelier.