ALLISON TRANSMISSION HLDGS I

Ticker: ALSN CUSIP: 01973R101 Class: Common Stock

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

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

Q4 2015
Shares 75,550 Value ($000) $1,956 Avg Close $23.12 Range $20.82 - $24.75
Q3 2015
Shares 75,550 Value ($000) $2,016 Avg Close $24.10 Range $21.83 - $25.35
Q2 2015
Shares 1,206,685 Value ($000) $35,308 Avg Close $26.00 Range $24.50 - $27.17
Q1 2015
Shares 1,226,241 Value ($000) $39,166 Avg Close $26.70 Range $25.33 - $28.28
Q4 2014
Shares 1,035,006 Value ($000) $35,087 Avg Close $26.41 Range $21.63 - $28.77
Q3 2014
Shares 1,338,460 Value ($000) $38,133 Avg Close $25.08 Range $23.45 - $26.54
Q2 2014
Shares 1,233,185 Value ($000) $38,352 Avg Close $24.84 Range $23.44 - $25.82
Q1 2014
Shares 1,287,685 Value ($000) $38,553 Avg Close $23.70 Range $21.59 - $25.56
Q4 2013
Shares 1,345,475 Value ($000) $37,149 Avg Close $21.10 Range $19.21 - $23.01
Q3 2013
Shares 1,309,675 Value ($000) $32,807 Avg Close $19.20 Range $17.87 - $22.36
Q2 2013
Shares 1,116,810 Value ($000) $25,776 Avg Close $18.65 Range $16.64 - $19.83