ARMSTRONG WORLD INDS INC NEW

Ticker: AWI CUSIP: 04247X102 Class: EQTY

IRIDIAN ASSET MANAGEMENT LLC/CT's Holding History (CIK: 0001033427)

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

Q3 2018

Shares 140,100 Value ($000) $9,751 Avg Close $64.18 Range $57.82 - $68.33

Q2 2018

Shares 4,517,715 Value ($000) $285,520 Avg Close $55.42 Range $50.66 - $60.47

Q1 2018

Shares 4,675,664 Value ($000) $263,240 Avg Close $56.41 Range $51.77 - $60.10

Q4 2017

Shares 4,631,998 Value ($000) $280,467 Avg Close $51.25 Range $45.82 - $57.22

Q3 2017

Shares 4,457,812 Value ($000) $228,463 Avg Close $43.80 Range $40.72 - $48.36

Q2 2017

Shares 4,750,675 Value ($000) $218,531 Avg Close $41.71 Range $38.33 - $44.61

Q1 2017

Shares 4,413,715 Value ($000) $203,252 Avg Close $39.39 Range $35.77 - $44.66

Q4 2016

Shares 3,667,097 Value ($000) $153,285 Avg Close $38.10 Range $33.85 - $41.86

Q3 2016

Shares 3,815,392 Value ($000) $157,652 Avg Close $38.95 Range $34.88 - $42.56

Q2 2016

Shares 3,895,780 Value ($000) $152,520 Avg Close $38.14 Range $33.80 - $45.02

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2018	140,100	$9,751	$64.18	$57.82 - $68.33
Q2 2018	4,517,715	$285,520	$55.42	$50.66 - $60.47
Q1 2018	4,675,664	$263,240	$56.41	$51.77 - $60.10
Q4 2017	4,631,998	$280,467	$51.25	$45.82 - $57.22
Q3 2017	4,457,812	$228,463	$43.80	$40.72 - $48.36
Q2 2017	4,750,675	$218,531	$41.71	$38.33 - $44.61
Q1 2017	4,413,715	$203,252	$39.39	$35.77 - $44.66
Q4 2016	3,667,097	$153,285	$38.10	$33.85 - $41.86
Q3 2016	3,815,392	$157,652	$38.95	$34.88 - $42.56
Q2 2016	3,895,780	$152,520	$38.14	$33.80 - $45.02