According to an internal EA memo obtained by Kotaku, the publisher has shut down Pandemic Studios, with a "core IP team" to be moved to EA's LA office.
Around 200 people were let go by EA, including CEO Andrew Goldman, president Josh Resnick and vice president of product development Greg Borrud.
"I want to make it clear that the Pandemic brand and franchises will live on," Nick Earl, EA Games Label senior vice president, wrote in the memo. "In the months ahead, we will announce plans for new games based on Pandemic franchises.
"This type of change can be difficult. But the situation calls for us to act decisively, to take control of our destiny and to run a stronger, more focused development operation. That's how we will continue to make great games in our LA studios."
Pandemic's latest title, The Saboteur, is scheduled for release on December 4 for Xbox 360, PS3 and PC.