REGENCY ENERGY PARTNERS L P

CUSIP: 75885Y107 Class: COM UNITS L P

TETRAD CORP's Holding History (CIK: 0000883597)

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

Q1 2012
Shares 50,000 Value ($000) $1,230 Avg Close — Range —
Q4 2011
Shares 50,000 Value ($000) $1,243 Avg Close — Range —
Q3 2011
Shares 50,000 Value ($000) $1,120 Avg Close — Range —
Q2 2011
Shares 50,000 Value ($000) $1,293 Avg Close — Range —
Q1 2011
Shares 50,000 Value ($000) $1,366 Avg Close — Range —
Q4 2010
Shares 50,000 Value ($000) $1,363 Avg Close — Range —
Q3 2010
Shares 50,000 Value ($000) $1,224 Avg Close — Range —
Q2 2010
Shares 50,000 Value ($000) $1,208 Avg Close — Range —
Q1 2010
Shares 50,000 Value ($000) $1,098 Avg Close — Range —
Q4 2009
Shares 50,000 Value ($000) $1,048 Avg Close — Range —
Q3 2009
Shares 50,000 Value ($000) $981 Avg Close — Range —
Q2 2009
Shares 50,000 Value ($000) $728 Avg Close — Range —
Q1 2009
Shares 50,000 Value ($000) $624 Avg Close — Range —
Q4 2008
Shares 50,000 Value ($000) $403 Avg Close — Range —
Q3 2008
Shares 50,000 Value ($000) $917 Avg Close — Range —