Stone, Gordon-Levitt and co-star Shailene Woodley will be on hand for a Q&A following the invitation-only screening, with Snowden himself appearing via the Internet.

Stone is making his first appearance at Comic-Con for the Snowden panel, which will be held in Hall H Thursday and include Gordon-Levitt, Woodley and stars Zachary Quinto and Scott Eastwood.

The film, from Open Road, also stars Nicolas Cage, Melissa Leo, Tom Wilkinson, Timothy Olyphant, Rhys Ifans and Joely Richardson.

Snowden opens in the U.S. on September 16.