 FOOTHILL RANCH, Calif., May 11, 2021 GLOBE NEWSWIRE -- Kaiser Aluminum Corporation Nasdaq:KALU announced today that it has priced 550.0 million aggregate principal amount of 4.50 senior notes due 2031 the notes in a private transaction that is exempt from the registration requirements of the Securities Act of 1933 the Act, an increase of 50.0 million over its previously announced offering size. 