X0303 4 2010-04-07 0000100517 UAL CORP /DE/ UAUA 0001231908 TAGUE JOHN P P.O. BOX 66100 - HDQLD CHICAGO IL 60666 1 1 EVP President of UA Common Stock 2010-04-07 4 M 0 49166 4.86 A 112423 D Common Stock 2010-04-07 4 S 0 49166 19.43 D 63257 D Option (Right to Buy) 4.86 2010-04-07 4 M 0 49166 D 2019-03-31 Common Stock 49166 98334 D The option vests in three equal annual installments on April 1, 2010, 2011 and 2012. Not applicable, see column two for exercise price. The sale reported on this Form 4 was effected pursant to a pre-established 10b5-1 trading plan. /s/ Lydia J. Mathas for John P. Tague 2010-04-08