X0303 4 2010-07-01 0 0000751652 QUESTAR CORP STR 0001444604 Jibson Ron W 180 EAST 100 SOUTH P.O. BOX 45360 SALT LAKE CITY UT 84145-0433 0 1 0 0 Senior Vice President Common Stock 2010-07-01 4 A 0 59133 15.22 A 74697 D Common Stock 2010-07-01 4 A 0 15604 15.22 A 90301 D Common Stock 2010-07-01 4 A 0 11285 15.22 A 101586 D Common Stock 12059.6248 I Employee Investment Plan Phantom Stock Units 0.00 Phantom Stock Units 1075.5749 1075.5749 D Stock Option 13.10 2017-03-05 Common Stock 12000 12000 D Stock Option 11.40 2016-03-05 Common Stock 25000 25000 D The shares vest in three annual installments, beginning on September 5, 2012. The shares were awarded under the terms of Questar's Long-term Stock Incentive Plan. The shares vest on March 5, 2013. The shares were awarded under the terms of Questar's Long-term Stock Incentive Plan. The shares vest on March 5, 2012. The shares were awarded under the terms of Questar's Long-term Stock Incentive Plan. As of July 1, 2010, I have 12,059.6248 equivalent shares of stock in Questar's 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 per my elections on or within 5 years of my termination of employment (subject to 6-month delay if necessary to comply with IRC 409A), or upon my death or Disability. In connection with the spin-off, these options were split into options to acquire Questar common stock and QEP common stock in accordance with that certain Employee Matters Agreement dated June 14, 2010 between Questar and QEP. The option vests in three annual installments beginning on March 5, 2011. The option vests in three annual installments beginning on March 5, 2010. Thomas C. Jepperson Attorney in Fact for R. W. Jibson 2010-07-06