X0202 4 2005-08-23 0 0000751652 QUESTAR CORP STR 0001177840 ROBINSON GLENN H 180 E 100 S SALT LAKE CITY UT 84111 0 0 0 1 Retired Vice President Common Stock and attached Common Stock Purchase Rights 2005-08-23 4 M 0 20000 22.95 A 47487 D Common Stock and attached Common Stock Purchase Rights 2005-08-23 4 F 0 5969 75.2 D 41518 D Common Stock and attached Common Stock Purchase Rights 2005-08-24 4 S 0 14031 75 D 27487 D Common Stock and attached Common Stock Purchase Rights 22.95 2005-08-23 4 M 0 20000 22.95 D 2002-08-11 2012-02-11 Common Stock and attached Common Stock Purchase Rights 20000 51000 D Phantom Stock Units 0 Phantom Stock Units 0 6251.7241 D Phantom stock units will be converted to cash beginning one year after my retirement. I retired effective April 30, 2005. During my employment, I also received phantom stock units as a result of my participation in an excess benefit plan. This total includes 1,620.1115 units in such plan in addition to units held through my account balance in a deferred compensation plan. I receive dividends on those units. Abigail L. Jones Attorney in Fact for G.H. Robinson 2005-08-24