Stupar, 25, appeared in five regular-season games for the 49ers, recording five tackles. A first-year pro, Stupar played collegiately at Penn State. He was signed to the 49ers’ practice squad leading up to their divisional-round game vs. Green Bay.
The departure of Stupar leaves the 49ers with 53 players on the roster.
The 49ers have their bye this week. They host the Panthers on Nov. 10.