OCCIDENTAL PETE CORP

Ticker: OXY CUSIP: 674599105 Class: COM

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q1 2013
Shares 7,250 Value ($000) $568 Avg Close $54.07 Range $50.19 - $57.63
Q4 2012
Shares 7,250 Value ($000) $555 Avg Close — Range —
Q3 2012
Shares 7,250 Value ($000) $624 Avg Close — Range —
Q2 2012
Shares 7,250 Value ($000) $622 Avg Close — Range —
Q1 2012
Shares 7,250 Value ($000) $690 Avg Close — Range —
Q4 2011
Shares 7,250 Value ($000) $679 Avg Close — Range —
Q3 2011
Shares 7,250 Value ($000) $518 Avg Close — Range —
Q2 2011
Shares 7,250 Value ($000) $754 Avg Close — Range —
Q1 2011
Shares 7,250 Value ($000) $758 Avg Close — Range —
Q4 2010
Shares 7,250 Value ($000) $711 Avg Close — Range —
Q3 2010
Shares 7,250 Value ($000) $568 Avg Close — Range —
Q2 2010
Shares 7,250 Value ($000) $559 Avg Close — Range —
Q1 2010
Shares 7,250 Value ($000) $613 Avg Close — Range —
Q4 2009
Shares 7,250 Value ($000) $590 Avg Close — Range —
Q3 2009
Shares 7,250 Value ($000) $568 Avg Close — Range —
Q2 2009
Shares 7,250 Value ($000) $477 Avg Close — Range —