INNOSPEC INC

Ticker: IOSP CUSIP: 45768S105 Class: Common Stock

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

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

Q4 2025
Shares 23,800 Value ($000) $1,822 Avg Close $75.03 Range $70.10 - $79.81
Q3 2025
Shares 23,063 Value ($000) $1,780 Avg Close $82.49 Range $73.21 - $89.37
Q2 2025
Shares 23,062 Value ($000) $1,939 Avg Close $86.03 Range $78.60 - $94.32
Q1 2025
Shares 22,883 Value ($000) $2,168 Avg Close $103.54 Range $91.98 - $114.58
Q4 2024
Shares 23,322 Value ($000) $2,567 Avg Close $111.62 Range $104.73 - $124.78
Q3 2024
Shares 23,586 Value ($000) $2,667 Avg Close $113.17 Range $101.07 - $129.81
Q2 2024
Shares 24,269 Value ($000) $2,999 Avg Close $121.30 Range $115.10 - $129.23
Q1 2024
Shares 24,873 Value ($000) $3,207 Avg Close $117.37 Range $110.33 - $126.78
Q4 2023
Shares 26,334 Value ($000) $3,245 Avg Close $102.52 Range $91.88 - $121.65
Q3 2023
Shares 27,492 Value ($000) $2,810 Avg Close $100.32 Range $93.27 - $107.44
Q2 2023
Shares 30,255 Value ($000) $3,039 Avg Close $95.78 Range $88.08 - $103.21
Q1 2023
Shares 30,969 Value ($000) $3,180 Avg Close $102.60 Range $90.19 - $110.59
Q4 2022
Shares 31,456 Value ($000) $3,236 Avg Close $96.50 Range $78.79 - $110.27
Q3 2022
Shares 31,132 Value ($000) $2,667 Avg Close $89.51 Range $80.19 - $98.62
Q2 2022
Shares 31,779 Value ($000) $3,044 Avg Close $91.85 Range $81.71 - $101.29
Q1 2022
Shares 31,412 Value ($000) $2,907 Avg Close $89.19 Range $83.58 - $94.67
Q4 2021
Shares 34,220 Value ($000) $3,091 Avg Close $82.93 Range $76.29 - $89.94
Q3 2021
Shares 33,426 Value ($000) $2,815 Avg Close $83.46 Range $75.85 - $90.38
Q2 2021
Shares 33,802 Value ($000) $3,063 Avg Close $92.53 Range $83.80 - $100.29
Q1 2021
Shares 36,964 Value ($000) $3,796 Avg Close $92.10 Range $80.91 - $99.72
Q4 2020
Shares 36,949 Value ($000) $3,352 Avg Close $71.95 Range $57.19 - $85.43
Q3 2020
Shares 36,949 Value ($000) $2,340 Avg Close $68.67 Range $56.85 - $78.17
Q2 2020
Shares 36,949 Value ($000) $2,854 Avg Close $67.35 Range $57.02 - $79.77
Q1 2020
Shares 36,949 Value ($000) $2,568 Avg Close $83.79 Range $52.02 - $98.93
Q4 2019
Shares 37,132 Value ($000) $3,841 Avg Close $87.47 Range $77.84 - $97.70
Q3 2019
Shares 37,882 Value ($000) $3,377 Avg Close $81.78 Range $74.31 - $88.66
Q2 2019
Shares 37,412 Value ($000) $3,413 Avg Close $76.63 Range $71.16 - $83.47
Q1 2019
Shares 37,111 Value ($000) $3,093 Avg Close $67.58 Range $51.63 - $78.46
Q4 2018
Shares 37,937 Value ($000) $2,343 Avg Close $62.18 Range $48.12 - $70.66
Q3 2018
Shares 37,092 Value ($000) $2,847 Avg Close $70.20 Range $64.67 - $74.99
Q2 2018
Shares 37,094 Value ($000) $2,840 Avg Close $67.39 Range $59.37 - $73.05
Q1 2018
Shares 36,508 Value ($000) $2,504 Avg Close $62.31 Range $55.67 - $66.49
Q4 2017
Shares 37,788 Value ($000) $2,668 Avg Close $59.54 Range $53.90 - $66.58
Q3 2017
Shares 38,364 Value ($000) $2,365 Avg Close $53.37 Range $48.20 - $59.20
Q2 2017
Shares 42,442 Value ($000) $2,782 Avg Close $57.04 Range $53.20 - $62.50
Q1 2017
Shares 46,521 Value ($000) $3,012 Avg Close $59.26 Range $51.41 - $66.19
Q4 2016
Shares 48,721 Value ($000) $3,337 Avg Close $56.82 Range $47.94 - $64.99
Q3 2016
Shares 50,021 Value ($000) $3,042 Avg Close $48.99 Range $39.67 - $53.81
Q2 2016
Shares 49,521 Value ($000) $2,277 Avg Close $41.52 Range $37.19 - $44.47
Q1 2016
Shares 51,535 Value ($000) $2,235 Avg Close $40.40 Range $36.39 - $46.84
Q4 2015
Shares 44,871 Value ($000) $2,437 Avg Close $48.12 Range $40.31 - $52.05
Q3 2015
Shares 44,171 Value ($000) $2,054 Avg Close $39.87 Range $35.73 - $44.30
Q2 2015
Shares 44,271 Value ($000) $1,994 Avg Close $38.87 Range $36.94 - $40.69
Q1 2015
Shares 44,671 Value ($000) $2,072 Avg Close $37.07 Range $33.21 - $40.57
Q4 2014
Shares 45,471 Value ($000) $1,942 Avg Close $35.30 Range $30.04 - $40.52
Q3 2014
Shares 44,979 Value ($000) $1,615 Avg Close $34.84 Range $30.82 - $37.97
Q2 2014
Shares 44,523 Value ($000) $1,922 Avg Close $36.87 Range $34.10 - $39.69
Q1 2014
Shares 42,723 Value ($000) $1,932 Avg Close $37.58 Range $34.73 - $40.51
Q4 2013
Shares 42,523 Value ($000) $1,965 Avg Close $38.90 Range $36.04 - $42.14
Q3 2013
Shares 42,223 Value ($000) $1,970 Avg Close $36.35 Range $33.62 - $39.43
Q2 2013
Shares 40,951 Value ($000) $1,645 Avg Close $35.20 Range $33.13 - $38.11
Q1 2013
Shares 40,141 Value ($000) $1,777 Avg Close $34.25 Range $29.32 - $37.57