ACME PACKET INC

CUSIP: 004764106 Class: COMMON STOCK

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

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

Q4 2011
Shares 24,630 Value ($000) $761 Avg Close — Range —
Q3 2011
Shares 22,590 Value ($000) $962 Avg Close — Range —
Q2 2011
Shares 8,205 Value ($000) $575 Avg Close — Range —
Q1 2011
Shares 7,660 Value ($000) $544 Avg Close — Range —
Q4 2010
Shares 6,370 Value ($000) $339 Avg Close — Range —