ARMSTRONG WORLD INDS INC NEW

Ticker: AWI CUSIP: 04247X102 Class: EQTY

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 41,040 Value ($000) $7,843 Avg Close $190.70 Range $177.96 - $205.72

Q3 2025

Shares 40,542 Value ($000) $7,947 Avg Close $185.53 Range $161.01 - $200.48

Q2 2025

Shares 40,408 Value ($000) $6,564 Avg Close $147.87 Range $121.70 - $168.75

Q1 2025

Shares 40,408 Value ($000) $5,693 Avg Close $146.25 Range $134.86 - $155.43

Q4 2024

Shares 40,869 Value ($000) $5,776 Avg Close $145.73 Range $128.16 - $163.18

Q3 2024

Shares 41,394 Value ($000) $5,440 Avg Close $122.34 Range $109.38 - $133.31

Q2 2024

Shares 42,739 Value ($000) $4,840 Avg Close $114.50 Range $109.47 - $123.00

Q1 2024

Shares 44,200 Value ($000) $5,491 Avg Close $108.64 Range $93.68 - $123.78

Q4 2023

Shares 47,096 Value ($000) $4,630 Avg Close $81.24 Range $66.98 - $98.11

Q3 2023

Shares 49,856 Value ($000) $3,590 Avg Close $73.04 Range $68.36 - $77.77

Q2 2023

Shares 55,006 Value ($000) $4,041 Avg Close $66.41 Range $60.59 - $72.47

Q1 2023

Shares 57,070 Value ($000) $4,066 Avg Close $72.70 Range $64.28 - $80.89

Q4 2022

Shares 58,557 Value ($000) $4,016 Avg Close $73.18 Range $64.85 - $82.25

Q3 2022

Shares 58,691 Value ($000) $4,650 Avg Close $81.71 Range $71.66 - $91.77

Q2 2022

Shares 60,076 Value ($000) $4,503 Avg Close $81.44 Range $70.62 - $92.01

Q1 2022

Shares 60,840 Value ($000) $5,476 Avg Close $92.96 Range $82.23 - $112.82

Q4 2021

Shares 66,277 Value ($000) $7,696 Avg Close $103.39 Range $90.40 - $113.30

Q3 2021

Shares 80,421 Value ($000) $7,678 Avg Close $100.21 Range $91.25 - $108.93

Q2 2021

Shares 81,783 Value ($000) $8,772 Avg Close $98.29 Range $85.80 - $105.57

Q1 2021

Shares 83,719 Value ($000) $7,542 Avg Close $80.81 Range $67.35 - $92.31

Q4 2020

Shares 84,112 Value ($000) $6,257 Avg Close $68.65 Range $54.92 - $77.54

Q3 2020

Shares 82,500 Value ($000) $5,677 Avg Close $69.27 Range $61.41 - $77.24

Q2 2020

Shares 80,844 Value ($000) $6,303 Avg Close $71.55 Range $61.02 - $82.61

Q1 2020

Shares 83,049 Value ($000) $6,596 Avg Close $90.71 Range $58.46 - $104.84

Q4 2019

Shares 85,237 Value ($000) $8,010 Avg Close $89.76 Range $84.26 - $97.29

Q3 2019

Shares 78,786 Value ($000) $7,619 Avg Close $90.34 Range $85.56 - $97.90

Q2 2019

Shares 77,847 Value ($000) $7,567 Avg Close $83.72 Range $74.58 - $93.00

Q1 2019

Shares 68,107 Value ($000) $5,409 Avg Close $65.06 Range $53.52 - $74.36

Q4 2018

Shares 67,799 Value ($000) $3,947 Avg Close $59.47 Range $50.69 - $66.52

Q3 2018

Shares 69,314 Value ($000) $4,824 Avg Close $64.18 Range $57.82 - $68.33

Q2 2018

Shares 69,339 Value ($000) $4,382 Avg Close $55.42 Range $50.66 - $60.47

Q1 2018

Shares 67,544 Value ($000) $3,803 Avg Close $56.41 Range $51.77 - $60.10

Q4 2017

Shares 69,912 Value ($000) $4,233 Avg Close $51.25 Range $45.82 - $57.22

Q3 2017

Shares 70,995 Value ($000) $3,638 Avg Close $43.80 Range $40.72 - $48.36

Q2 2017

Shares 78,552 Value ($000) $3,613 Avg Close $41.71 Range $38.33 - $44.61

Q1 2017

Shares 94,974 Value ($000) $4,374 Avg Close $39.39 Range $35.77 - $44.66

Q4 2016

Shares 99,374 Value ($000) $4,154 Avg Close $38.10 Range $33.85 - $41.86

Q3 2016

Shares 101,974 Value ($000) $4,214 Avg Close $38.95 Range $34.88 - $42.56

Q2 2016

Shares 100,874 Value ($000) $3,949 Avg Close $38.14 Range $33.80 - $45.02

Q1 2016

Shares 84,091 Value ($000) $4,067 Avg Close $38.17 Range $33.42 - $45.27

Q4 2015

Shares 73,429 Value ($000) $3,358 Avg Close $45.23 Range $41.33 - $48.68

Q3 2015

Shares 72,262 Value ($000) $3,450 Avg Close $51.16 Range $43.23 - $56.47

Q2 2015

Shares 71,513 Value ($000) $3,810 Avg Close $51.87 Range $49.25 - $54.85

Q1 2015

Shares 82,932 Value ($000) $4,766 Avg Close $49.83 Range $45.21 - $54.35

Q4 2014

Shares 84,432 Value ($000) $4,316 Avg Close $46.09 Range $40.93 - $52.13

Q3 2014

Shares 83,575 Value ($000) $4,680 Avg Close $51.87 Range $44.98 - $55.73

Q2 2014

Shares 82,701 Value ($000) $4,750 Avg Close $50.40 Range $47.43 - $53.96

Q1 2014

Shares 45,801 Value ($000) $2,439 Avg Close $52.98 Range $47.74 - $57.59

Q4 2013

Shares 45,601 Value ($000) $2,627 Avg Close $49.89 Range $46.10 - $53.80

Q3 2013

Shares 46,101 Value ($000) $2,534 Avg Close $47.06 Range $42.62 - $53.16

Q2 2013

Shares 47,964 Value ($000) $2,292 Avg Close $47.68 Range $41.80 - $52.04

Q1 2013

Shares 36,803 Value ($000) $2,057 Avg Close $50.37 Range $46.37 - $54.41

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	41,040	$7,843	$190.70	$177.96 - $205.72
Q3 2025	40,542	$7,947	$185.53	$161.01 - $200.48
Q2 2025	40,408	$6,564	$147.87	$121.70 - $168.75
Q1 2025	40,408	$5,693	$146.25	$134.86 - $155.43
Q4 2024	40,869	$5,776	$145.73	$128.16 - $163.18
Q3 2024	41,394	$5,440	$122.34	$109.38 - $133.31
Q2 2024	42,739	$4,840	$114.50	$109.47 - $123.00
Q1 2024	44,200	$5,491	$108.64	$93.68 - $123.78
Q4 2023	47,096	$4,630	$81.24	$66.98 - $98.11
Q3 2023	49,856	$3,590	$73.04	$68.36 - $77.77
Q2 2023	55,006	$4,041	$66.41	$60.59 - $72.47
Q1 2023	57,070	$4,066	$72.70	$64.28 - $80.89
Q4 2022	58,557	$4,016	$73.18	$64.85 - $82.25
Q3 2022	58,691	$4,650	$81.71	$71.66 - $91.77
Q2 2022	60,076	$4,503	$81.44	$70.62 - $92.01
Q1 2022	60,840	$5,476	$92.96	$82.23 - $112.82
Q4 2021	66,277	$7,696	$103.39	$90.40 - $113.30
Q3 2021	80,421	$7,678	$100.21	$91.25 - $108.93
Q2 2021	81,783	$8,772	$98.29	$85.80 - $105.57
Q1 2021	83,719	$7,542	$80.81	$67.35 - $92.31
Q4 2020	84,112	$6,257	$68.65	$54.92 - $77.54
Q3 2020	82,500	$5,677	$69.27	$61.41 - $77.24
Q2 2020	80,844	$6,303	$71.55	$61.02 - $82.61
Q1 2020	83,049	$6,596	$90.71	$58.46 - $104.84
Q4 2019	85,237	$8,010	$89.76	$84.26 - $97.29
Q3 2019	78,786	$7,619	$90.34	$85.56 - $97.90
Q2 2019	77,847	$7,567	$83.72	$74.58 - $93.00
Q1 2019	68,107	$5,409	$65.06	$53.52 - $74.36
Q4 2018	67,799	$3,947	$59.47	$50.69 - $66.52
Q3 2018	69,314	$4,824	$64.18	$57.82 - $68.33
Q2 2018	69,339	$4,382	$55.42	$50.66 - $60.47
Q1 2018	67,544	$3,803	$56.41	$51.77 - $60.10
Q4 2017	69,912	$4,233	$51.25	$45.82 - $57.22
Q3 2017	70,995	$3,638	$43.80	$40.72 - $48.36
Q2 2017	78,552	$3,613	$41.71	$38.33 - $44.61
Q1 2017	94,974	$4,374	$39.39	$35.77 - $44.66
Q4 2016	99,374	$4,154	$38.10	$33.85 - $41.86
Q3 2016	101,974	$4,214	$38.95	$34.88 - $42.56
Q2 2016	100,874	$3,949	$38.14	$33.80 - $45.02
Q1 2016	84,091	$4,067	$38.17	$33.42 - $45.27
Q4 2015	73,429	$3,358	$45.23	$41.33 - $48.68
Q3 2015	72,262	$3,450	$51.16	$43.23 - $56.47
Q2 2015	71,513	$3,810	$51.87	$49.25 - $54.85
Q1 2015	82,932	$4,766	$49.83	$45.21 - $54.35
Q4 2014	84,432	$4,316	$46.09	$40.93 - $52.13
Q3 2014	83,575	$4,680	$51.87	$44.98 - $55.73
Q2 2014	82,701	$4,750	$50.40	$47.43 - $53.96
Q1 2014	45,801	$2,439	$52.98	$47.74 - $57.59
Q4 2013	45,601	$2,627	$49.89	$46.10 - $53.80
Q3 2013	46,101	$2,534	$47.06	$42.62 - $53.16
Q2 2013	47,964	$2,292	$47.68	$41.80 - $52.04
Q1 2013	36,803	$2,057	$50.37	$46.37 - $54.41