X0202 4 2005-11-02 0 0000751652 QUESTAR CORP STR 0001318822 Jepperson Thomas C 180 EAST 100 SOUTH, P.O. BOX 45433 SALT LAKE CITY UT 84145-0433 0 1 0 0 VP and General Counsel Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 M 0 8000 16.8125 A 24471.051 D Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 F 0 1691 79.55 D 22780.051 D Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 M 0 7367 19.125 A 30147.051 D Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 F 0 1771 79.55 D 28376.051 D Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 M 0 633 19.125 A 29009.051 D Common Stock and attached Common Stock Purchase Rights 2005-11-02 4 F 0 311 79.55 D 28698.051 D Common Stock and attached Common Stock Purchase Rights 6011.1331 I Employee Investment Plan Stock Option 16.8125 2005-11-02 4 M 0 8000 16.8125 D 1996-08-13 2006-02-13 Common Stock and attached Common Stock Purchase Rights 8000 0 D Stock Option 19.125 2005-11-02 4 M 0 7367 19.125 D 1997-08-11 2007-02-11 Common Stock and attached Common Stock Purchase Rights 7367 633 D Stock Option 19.125 2005-11-02 4 M 0 633 19.125 D 1997-08-11 2007-02-11 Common Stock and attached Common Stock Purchase Rights 633 0 D Phantom Stock Units 0.00 Phantom Stock Units 341.1094 341.1094 D Stock Option 21.375 1998-08-10 2008-02-10 Common Stock and attached Common Stock Purchase Rights 8000 8000 D Stock Option 17.00 1999-08-09 2009-02-09 Common Stock and attached Common Stock Purchase Rights 8000 8000 D Stock Option 28.01 2001-08-13 2011-02-13 Common Stock and attached Common Stock Purchase Rights 10000 10000 D Stock Option 22.95 2002-08-11 2012-02-11 Common Stock and attached Common Stock Purchase Rights 12000 12000 D Stock Option 27.11 2003-08-11 2013-02-11 Common Stock and attached Common Stock Purchase Rights 9750 9750 D As of November 2, 2005, I had 6,011.1331 equivalent shares of stock in my account in the Employee Investment Plan. The number of equivalent shares will fluctuate as Questar's stock price changes, this fluctuation does not reflect any transactions that should be reported. Phantom stock units will be converted to cash beginning at retirement; my retirement date is unknown. I receive phantom stock units as a result of my election to defer compensation pursuant to nonqualified plans. I also receive phantom stock units as a result of my participation in an excess benefit plan. This total includes 340.6970 units in such plan in addition to units held through my account balance in a deferred compensation plan. I also receive dividends. Abigail L. Jones Attorney in Fact for T. C. Jepperson 2005-11-03