ARMSTRONG WORLD INDS INC NEW

Ticker: AWI CUSIP: 04247X102 Class: EQTY

FRONTIER CAPITAL MANAGEMENT CO LLC's Holding History (CIK: 0000351173)

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

Q1 2018

Shares 159,046 Value ($000) $8,954 Avg Close $56.41 Range $51.77 - $60.10

Q4 2017

Shares 246,576 Value ($000) $14,930 Avg Close $51.25 Range $45.82 - $57.22

Q3 2017

Shares 251,502 Value ($000) $12,889 Avg Close $43.80 Range $40.72 - $48.36

Q2 2017

Shares 255,200 Value ($000) $11,739 Avg Close $41.71 Range $38.33 - $44.61

Q1 2017

Shares 257,591 Value ($000) $11,862 Avg Close $39.39 Range $35.77 - $44.66

Q4 2016

Shares 262,350 Value ($000) $10,966 Avg Close $38.10 Range $33.85 - $41.86

Q3 2016

Shares 264,893 Value ($000) $10,945 Avg Close $38.95 Range $34.88 - $42.56

Q2 2016

Shares 265,196 Value ($000) $10,382 Avg Close $38.14 Range $33.80 - $45.02

Q1 2016

Shares 273,001 Value ($000) $13,205 Avg Close $38.17 Range $33.42 - $45.27

Q4 2015

Shares 271,855 Value ($000) $12,432 Avg Close $45.23 Range $41.33 - $48.68

Q3 2015

Shares 272,123 Value ($000) $12,991 Avg Close $51.16 Range $43.23 - $56.47

Q2 2015

Shares 272,298 Value ($000) $14,508 Avg Close $51.87 Range $49.25 - $54.85

Q1 2015

Shares 271,517 Value ($000) $15,604 Avg Close $49.83 Range $45.21 - $54.35

Q4 2014

Shares 249,641 Value ($000) $12,762 Avg Close $46.09 Range $40.93 - $52.13

Q3 2014

Shares 259,370 Value ($000) $14,525 Avg Close $51.87 Range $44.98 - $55.73

Q2 2014

Shares 268,680 Value ($000) $15,430 Avg Close $50.40 Range $47.43 - $53.96

Q1 2014

Shares 1,170,301 Value ($000) $62,319 Avg Close $52.98 Range $47.74 - $57.59

Q4 2013

Shares 1,027,781 Value ($000) $59,210 Avg Close $49.89 Range $46.10 - $53.80

Q3 2013

Shares 768,015 Value ($000) $42,210 Avg Close $47.06 Range $42.62 - $53.16

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	159,046	$8,954	$56.41	$51.77 - $60.10
Q4 2017	246,576	$14,930	$51.25	$45.82 - $57.22
Q3 2017	251,502	$12,889	$43.80	$40.72 - $48.36
Q2 2017	255,200	$11,739	$41.71	$38.33 - $44.61
Q1 2017	257,591	$11,862	$39.39	$35.77 - $44.66
Q4 2016	262,350	$10,966	$38.10	$33.85 - $41.86
Q3 2016	264,893	$10,945	$38.95	$34.88 - $42.56
Q2 2016	265,196	$10,382	$38.14	$33.80 - $45.02
Q1 2016	273,001	$13,205	$38.17	$33.42 - $45.27
Q4 2015	271,855	$12,432	$45.23	$41.33 - $48.68
Q3 2015	272,123	$12,991	$51.16	$43.23 - $56.47
Q2 2015	272,298	$14,508	$51.87	$49.25 - $54.85
Q1 2015	271,517	$15,604	$49.83	$45.21 - $54.35
Q4 2014	249,641	$12,762	$46.09	$40.93 - $52.13
Q3 2014	259,370	$14,525	$51.87	$44.98 - $55.73
Q2 2014	268,680	$15,430	$50.40	$47.43 - $53.96
Q1 2014	1,170,301	$62,319	$52.98	$47.74 - $57.59
Q4 2013	1,027,781	$59,210	$49.89	$46.10 - $53.80
Q3 2013	768,015	$42,210	$47.06	$42.62 - $53.16