DEVON ENERGY CORP NEW

Ticker: DVN CUSIP: 25179M103 Class: COM

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q1 2013
Shares 16,000 Value ($000) $903 Avg Close $37.13 Range $34.14 - $40.87
Q4 2012
Shares 16,000 Value ($000) $833 Avg Close — Range —
Q3 2012
Shares 16,000 Value ($000) $968 Avg Close — Range —
Q2 2012
Shares 16,000 Value ($000) $928 Avg Close — Range —
Q1 2012
Shares 16,000 Value ($000) $1,138 Avg Close — Range —
Q4 2011
Shares 16,000 Value ($000) $992 Avg Close — Range —
Q3 2011
Shares 16,000 Value ($000) $887 Avg Close — Range —
Q2 2011
Shares 16,000 Value ($000) $1,261 Avg Close — Range —
Q1 2011
Shares 16,000 Value ($000) $1,468 Avg Close — Range —
Q4 2010
Shares 16,000 Value ($000) $1,256 Avg Close — Range —
Q3 2010
Shares 16,000 Value ($000) $1,036 Avg Close — Range —
Q2 2010
Shares 16,000 Value ($000) $975 Avg Close — Range —
Q1 2010
Shares 16,000 Value ($000) $1,031 Avg Close — Range —
Q4 2009
Shares 16,000 Value ($000) $1,176 Avg Close — Range —
Q3 2009
Shares 16,000 Value ($000) $1,077 Avg Close — Range —
Q2 2009
Shares 16,000 Value ($000) $872 Avg Close — Range —