WESTAMERICA BANCORPORATION

Ticker: WABC CUSIP: 957090103 Class: Common Stock

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

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

Q2 2012
Shares 4,200 Value ($000) $198 Avg Close — Range —
Q1 2012
Shares 4,200 Value ($000) $202 Avg Close — Range —
Q4 2011
Shares 4,400 Value ($000) $193 Avg Close — Range —
Q3 2011
Shares 4,400 Value ($000) $169 Avg Close — Range —
Q2 2011
Shares 4,400 Value ($000) $217 Avg Close — Range —
Q1 2011
Shares 4,400 Value ($000) $226 Avg Close — Range —
Q4 2010
Shares 4,400 Value ($000) $244 Avg Close — Range —