ALPHA NATURAL RESOURCES INC

CUSIP: 02076X102 Class: COM

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q3 2012
Shares 45,000 Value ($000) $296 Avg Close — Range —
Q2 2012
Shares 22,300 Value ($000) $194 Avg Close — Range —
Q1 2012
Shares 19,600 Value ($000) $298 Avg Close — Range —
Q4 2011
Shares 18,400 Value ($000) $376 Avg Close — Range —