Prospectus Supplement
Definition:
Under US securities laws, a Prospectus Supplement is used in connection with a Shelf Registration Statement. It contains information about the issuer and the securities not previously known and is filed when the issuer eventually sells its securities in a Shelf Takedown. It supplements the Base Prospectus that is included in the original Shelf Registration Statement filing, including for ATMs.
To be distinguished from a Supplementary Prospectus.