ARMSTRONG WORLD INDS INC NEW

Ticker: AWI CUSIP: 04247X102 Class: EQTY

Portolan Capital Management, LLC's Holding History (CIK: 0001350290)

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

Q2 2014

Shares 35,550 Value ($000) $2,042 Avg Close $50.40 Range $47.43 - $53.96

Q1 2014

Shares 108,512 Value ($000) $5,778 Avg Close $52.98 Range $47.74 - $57.59

Q4 2013

Shares 106,863 Value ($000) $6,156 Avg Close $49.89 Range $46.10 - $53.80

Q3 2013

Shares 66,661 Value ($000) $3,664 Avg Close $47.06 Range $42.62 - $53.16

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	35,550	$2,042	$50.40	$47.43 - $53.96
Q1 2014	108,512	$5,778	$52.98	$47.74 - $57.59
Q4 2013	106,863	$6,156	$49.89	$46.10 - $53.80
Q3 2013	66,661	$3,664	$47.06	$42.62 - $53.16