UNISOURCE ENERGY CORP

CUSIP: 909205106 Class: COM

MUFG Americas Holdings Corp's Holding History (CIK: 0001011659)

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

Q1 2012
Shares 13,549 Value ($000) $495 Avg Close — Range —
Q4 2011
Shares 23,649 Value ($000) $874 Avg Close — Range —
Q3 2011
Shares 28,349 Value ($000) $1,023 Avg Close — Range —
Q2 2011
Shares 33,168 Value ($000) $1,238 Avg Close — Range —
Q1 2011
Shares 37,249 Value ($000) $1,346 Avg Close — Range —
Q4 2010
Shares 30,549 Value ($000) $1,095 Avg Close — Range —