AON PLC

CUSIP: G0408V102 Class: SHS CL A

WESTFIELD CAPITAL MANAGEMENT CO LP's Holding History (CIK: 0001177719)

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

Q4 2015
Shares 392,745 Value ($000) $36,215 Avg Close — Range —
Q3 2015
Shares 310,204 Value ($000) $27,487 Avg Close — Range —
Q2 2015
Shares 364,098 Value ($000) $36,293 Avg Close — Range —
Q1 2015
Shares 367,618 Value ($000) $35,335 Avg Close — Range —
Q4 2014
Shares 392,418 Value ($000) $37,213 Avg Close — Range —
Q3 2014
Shares 403,648 Value ($000) $35,388 Avg Close — Range —
Q2 2014
Shares 406,940 Value ($000) $36,661 Avg Close — Range —
Q1 2014
Shares 424,220 Value ($000) $35,753 Avg Close — Range —
Q4 2013
Shares 429,030 Value ($000) $35,991 Avg Close — Range —