POTASH CORP SASK INC

CUSIP: 73755L107 Class: COMMON STOCK-FO

ROBERTS GLORE & CO INC /IL/'s Holding History (CIK: 0001017115)

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

Q4 2017
Shares 41,100 Value ($000) $849 Avg Close — Range —
Q3 2017
Shares 43,225 Value ($000) $832 Avg Close — Range —
Q2 2017
Shares 42,475 Value ($000) $692 Avg Close — Range —
Q1 2017
Shares 41,875 Value ($000) $715 Avg Close — Range —
Q4 2016
Shares 43,865 Value ($000) $794 Avg Close — Range —
Q3 2016
Shares 44,890 Value ($000) $733 Avg Close — Range —
Q2 2016
Shares 41,515 Value ($000) $674 Avg Close — Range —
Q1 2016
Shares 38,740 Value ($000) $659 Avg Close — Range —
Q4 2015
Shares 32,065 Value ($000) $549 Avg Close — Range —