0000950142-23-002263 POS AM 1 20230818 20230818 Arconic Corp 0001790982 3350 842745636 DE 1231 POS AM 33 333-237573 231183888 201 ISABELLA STREET PITTSBURGH PA 15212-5872 (412) 992-2500 201 ISABELLA STREET PITTSBURGH PA 15212-5872 Arconic Rolled Products Corp 20191011 POS AM 1 eh230391935_posam-573.htm AMENDMENT NO. 1