QUESTAR CORP

CUSIP: 748356102 Class: COM

BLAIR WILLIAM & CO/IL's Holding History (CIK: 0000902367)

Note: Option positions (PUT/CALL) are excluded.

Q4 2015
Shares 20,730 Value ($000) $403 Avg Close — Range —
Q3 2015
Shares 20,919 Value ($000) $406 Avg Close — Range —
Q2 2015
Shares 20,618 Value ($000) $431 Avg Close — Range —
Q1 2015
Shares 14,791 Value ($000) $353 Avg Close — Range —
Q4 2014
Shares 19,236 Value ($000) $486 Avg Close — Range —
Q3 2014
Shares 17,499 Value ($000) $390 Avg Close — Range —
Q2 2014
Shares 18,671 Value ($000) $463 Avg Close — Range —
Q1 2014
Shares 18,901 Value ($000) $449 Avg Close — Range —
Q4 2013
Shares 13,009 Value ($000) $299 Avg Close — Range —
Q3 2013
Shares 13,528 Value ($000) $304 Avg Close — Range —