POTASH CORP SASK INC

CUSIP: 73755L107 Class: COMMON STOCK-FO

Callahan Advisors, LLC's Holding History (CIK: 0001395055)

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

Q2 2016
Shares 10,200 Value ($000) $166 Avg Close — Range —
Q1 2016
Shares 10,100 Value ($000) $172 Avg Close — Range —
Q4 2015
Shares 10,100 Value ($000) $173 Avg Close — Range —
Q3 2015
Shares 10,100 Value ($000) $208 Avg Close — Range —
Q2 2015
Shares 10,050 Value ($000) $311 Avg Close — Range —
Q1 2015
Shares 9,500 Value ($000) $306 Avg Close — Range —
Q4 2014
Shares 9,500 Value ($000) $336 Avg Close — Range —
Q3 2014
Shares 9,500 Value ($000) $328 Avg Close — Range —
Q2 2014
Shares 8,500 Value ($000) $323 Avg Close — Range —
Q1 2014
Shares 8,500 Value ($000) $308 Avg Close — Range —
Q4 2013
Shares 8,000 Value ($000) $264 Avg Close — Range —