ARMSTRONG WORLD INDS INC NEW

Ticker: AWI CUSIP: 04247X102 Class: EQTY

Stockbridge Partners LLC's Holding History (CIK: 0001505183)

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

Q3 2017

Shares 2,215,943 Value ($000) $113,567 Avg Close $43.80 Range $40.72 - $48.36

Q2 2017

Shares 2,613,441 Value ($000) $120,218 Avg Close $41.71 Range $38.33 - $44.61

Q1 2017

Shares 3,193,845 Value ($000) $147,077 Avg Close $39.39 Range $35.77 - $44.66

Q4 2016

Shares 3,697,355 Value ($000) $154,549 Avg Close $38.10 Range $33.85 - $41.86

Q3 2016

Shares 4,042,954 Value ($000) $167,055 Avg Close $38.95 Range $34.88 - $42.56

Q2 2016

Shares 3,738,155 Value ($000) $146,349 Avg Close $38.14 Range $33.80 - $45.02

Q1 2016

Shares 2,924,772 Value ($000) $141,471 Avg Close $38.17 Range $33.42 - $45.27

Q4 2015

Shares 2,282,187 Value ($000) $104,364 Avg Close $45.23 Range $41.33 - $48.68

Q3 2015

Shares 2,216,387 Value ($000) $105,810 Avg Close $51.16 Range $43.23 - $56.47

Q2 2015

Shares 2,194,243 Value ($000) $116,909 Avg Close $51.87 Range $49.25 - $54.85

Q1 2015

Shares 1,416,965 Value ($000) $81,433 Avg Close $49.83 Range $45.21 - $54.35

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2017	2,215,943	$113,567	$43.80	$40.72 - $48.36
Q2 2017	2,613,441	$120,218	$41.71	$38.33 - $44.61
Q1 2017	3,193,845	$147,077	$39.39	$35.77 - $44.66
Q4 2016	3,697,355	$154,549	$38.10	$33.85 - $41.86
Q3 2016	4,042,954	$167,055	$38.95	$34.88 - $42.56
Q2 2016	3,738,155	$146,349	$38.14	$33.80 - $45.02
Q1 2016	2,924,772	$141,471	$38.17	$33.42 - $45.27
Q4 2015	2,282,187	$104,364	$45.23	$41.33 - $48.68
Q3 2015	2,216,387	$105,810	$51.16	$43.23 - $56.47
Q2 2015	2,194,243	$116,909	$51.87	$49.25 - $54.85
Q1 2015	1,416,965	$81,433	$49.83	$45.21 - $54.35