During the Credits
There is a mid-credits scene during the credits of The Amazing Spider-Man. Check out more details and spoilers below.
The extra scene shows an imprisoned Curt Conners who is visited by a mysterious man. A brief exchange of dialogue ensues, and Curt warns him to leave Peter Parker alone. The man, hidden in the shadows, is believed to be Norman Osborn and tells Conners to tell Parker about his father.
Update: Ain’t It Cool spoke to Rhys Ifans, who plays Dr. Connors in the film, and he said that the mystery character is not Norman Osborn. “A representative from OsCorp appears miraculously in the room,” he tells the site. “How he gets in there and how he leaves, we don’t know. Maybe we will find out. But it’s not Norman Osborn. … But it is someone who is in the employ of Norman Osborn without question.” The site followed up by asking, “[It's] someone we’re familiar with, who we don’t know is employed by Osborn?” And Ifans replied, “Yeah.”
After the Credits
There is no stinger after the credits of The Amazing Spider-Man.
Special thanks to Marcus Wee for the stinger submission, movieman for the confirmation, and 2-FineSpence for the update!