X0202 4/A 2006-02-14 2006-02-15 0 0000751652 QUESTAR CORP STR 0001225412 MCKEE ROBERT E III 14927 SANDALFOOT HOUSTON TX 77095 1 0 0 0 Common Stock and attached Common Stock Purchase Rights 2966.294 D Phantom Stock Units 73.50 2006-02-14 4 A 0 700 73.50 A Phantom Stock Units 700 1611.4953 D Phantom Stock Units 0.00 Phantom Stock Units 820.9861 820.9861 D Stock Option 29.71 2005-04-01 2013-04-01 Common Stock and attached Common Stock Purchase Rights 7000 7000 D This total includes 100 shares held indirectly through family trusts for which I have voting and investment control. This date is unknown until I retire as a director. I have been granted restricted phantom stock units under Questar's Long-term Stock Incentive Plan. Such units are credited with dividends. The phantom stock units were awarded to me as partial compensation for my services as a director and were granted under the terms of Questar's Long-term Stock Incentive Plan. The units are restricted and vest in three annual, equal installments beginning February 14, 2008, but I will not recognize the taxable value of the units until after my retirement as a voting director. I defer my director's fees, and such fees are accounted for in phantom stock units that are credited with dividends. Abigail L. Jones Attorney in Fact for R. E. McKee 2006-02-16