ALPHA NATURAL RESOURCES INC

CUSIP: 02076X102 Class: COM

PRINCIPAL FINANCIAL GROUP INC's Holding History (CIK: 0001126328)

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

Q3 2014
Shares 43,011 Value ($000) $107 Avg Close — Range —
Q2 2014
Shares 43,011 Value ($000) $160 Avg Close — Range —
Q1 2014
Shares 576,624 Value ($000) $2,450 Avg Close — Range —
Q4 2013
Shares 550,260 Value ($000) $3,929 Avg Close — Range —
Q3 2013
Shares 545,870 Value ($000) $3,254 Avg Close — Range —
Q2 2013
Shares 531,788 Value ($000) $2,787 Avg Close — Range —