Spider-Man 4

Spider-Man 4 was a proposed sequel to Spider-Man 3 with a 2011 release.

Plot
Unknown

Cast

 * Tobey Maguire as Peter Parker / Spider-Man
 * Kirsten Dunst as Mary-Jane Watson
 * John Malkovich as Adrian Toomes / Vulture
 * Anne Hathaway as Felicia Hardy / Vulturess
 * Bruce Campbell as Quentin Beck / Mysterio
 * Rosemary Harris as Aunt May
 * J.K. Simmons as J. Jonah Jameson
 * Bill Nunn as Joseph "Robbie" Robertson
 * Elizabeth Banks as Betty Brant
 * Bryce Dallas Howard as Gwen Stacy
 * Dylan Baker as Dr. Curt Connors / The Lizard
 * James Cromwell as George Stacy

Why It Was Cancelled

 * 1) Spider-Man 3 got polarizing reviews from critics and audiences.
 * 2) Many fans were disappointed with Spider-Man 3.
 * 3) Sam Raimi, the director of the first three films admitted that he was exhausted and unhappy with the third film and decided to cancel the fourth film.

Result
Marvel hit the reset button with two reboot films The Amazing Spider-Man in 2012 and The Amazing Spider-Man 2 in 2014. Then in 2017, Sony released the most recent reboot Spider-Man Homecoming as part of the Marvel Cinematic Universe.