OsCorp is an industrial company founded and owned by Norman Osborn.
History
OsCorp' C.E.O. was Norman Osborn. OsCorp was first used to create the Black Widow. Spider-Man eventually tracked the Black Widow to OsCorp and during their battle the Black Widow fell into some chemicals. This caused an explosion and set OsCorp ablaze.
Several months later OsCorp was rebuilt. However, Alistair Smythe also rebuilt the Black Widow and created two other Spider Slayers called the Tarantula and the Scorpion and the Spider Slayers attacked OsCorp. Norman managed to escape but the Spider Slayers followed him to the George Washington Bridge. While on the bridge Spider-Man managed to defeat the Spider Slayers and save Norman Osborn.