ARCH COAL INC

CUSIP: 039380100 Class: COM

GREAT WEST LIFE ASSURANCE CO /CAN/'s Holding History (CIK: 0001046192)

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

Q1 2015
Shares 14,800 Value ($000) $15 Avg Close — Range —
Q4 2014
Shares 14,800 Value ($000) $26 Avg Close — Range —
Q3 2014
Shares 14,800 Value ($000) $31 Avg Close — Range —
Q2 2014
Shares 14,800 Value ($000) $54 Avg Close — Range —
Q1 2014
Shares 205,400 Value ($000) $986 Avg Close — Range —
Q4 2013
Shares 14,800 Value ($000) $66 Avg Close — Range —
Q3 2013
Shares 14,800 Value ($000) $60 Avg Close — Range —