No, Sergio does not die. He survives the entire series and is one of the few original main characters alive at the end of the show.
Sergio’s survival is more notable because so many of his original crew die: does sergio die in money heist
In conclusion, Sergio Marquina, also known as "The Professor," dies in the final episodes of Money Heist. His character's demise serves as a poignant reminder of the risks and consequences of the heist, and the show's creators expertly wrapped up the narrative with a satisfying and emotional conclusion. No, Sergio does not die