X0202 4 2006-05-04 0 0001260990 GTX INC /DE/ GTXI 0001276244 STEINER MITCHELL SHUSTER 3 N. DUNLAP STREET 3RD FLOOR MEMPHIS TN 38163 1 1 1 0 Chief Executive Officer Common Stock 2006-05-04 4 S 0 7000 10.0821 D 381000 I By Joint Account Common Stock 2006-05-05 4 S 0 7000 9.8725 D 374000 I By Joint Account Common Stock 26500 D Common Stock 26500 I By Wife Common Stock 4409862 I By LLC Common Stock 198425 I By GRAT Common Stock 100215 I By Trust Common Stock 100215 I By Trust Common Stock 100215 I By Trust Common Stock 100215 I By Trust The sales reported in this Form 4 were effectuated pursuant to a Rule 10b5-1 trading plan adopted by the reporting person and his wife on February 23, 2006. An aggregate of 7,000 shares were sold on May 4, 2006 at purchase prices ranging from $9.97 to $10.22. Joint account held in the name of the reporting person and his wife. An aggregate of 7,000 shares were sold on May 5, 2006 at purchase prices ranging from $9.72 to $10.10. /s/ Henry P. Doggrell, by Power of Attorney 2006-05-08