MASCO CORP

Ticker: MAS CUSIP: 574599106 Class: COM

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

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

Q3 2016

Shares 1,659,155 Value ($000) $56,926 Avg Close $30.05 Range $26.26 - $32.48

Q1 2014

Shares 1,257,985 Value ($000) $27,940 Avg Close $16.53 Range $15.18 - $17.49

Q4 2013

Shares 1,509,905 Value ($000) $34,381 Avg Close $15.53 Range $14.04 - $16.82

Q3 2013

Shares 1,324,225 Value ($000) $28,180 Avg Close $14.83 Range $13.37 - $16.78

Q2 2013

Shares 1,338,520 Value ($000) $26,088 Avg Close $14.92 Range $13.43 - $16.64

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2016	1,659,155	$56,926	$30.05	$26.26 - $32.48
Q1 2014	1,257,985	$27,940	$16.53	$15.18 - $17.49
Q4 2013	1,509,905	$34,381	$15.53	$14.04 - $16.82
Q3 2013	1,324,225	$28,180	$14.83	$13.37 - $16.78
Q2 2013	1,338,520	$26,088	$14.92	$13.43 - $16.64