AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

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

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

Q4 2025
Shares 35,798 Value ($000) $959 Avg Close $25.76 Range $22.94 - $29.00
Q3 2025
Shares 35,879 Value ($000) $956 Avg Close $25.82 Range $20.39 - $31.26
Q2 2025
Shares 35,877 Value ($000) $824 Avg Close $24.82 Range $22.64 - $29.27
Q1 2025
Shares 36,369 Value ($000) $1,054 Avg Close $31.94 Range $25.89 - $39.01
Q4 2024
Shares 36,369 Value ($000) $1,350 Avg Close $45.73 Range $36.48 - $53.96
Q3 2024
Shares 36,964 Value ($000) $1,794 Avg Close $43.89 Range $36.56 - $50.62
Q2 2024
Shares 38,117 Value ($000) $1,525 Avg Close $41.44 Range $38.43 - $46.62
Q1 2024
Shares 38,269 Value ($000) $1,680 Avg Close $51.65 Range $42.16 - $65.92
Q4 2023
Shares 41,155 Value ($000) $2,545 Avg Close $52.53 Range $43.79 - $63.67
Q3 2023
Shares 42,523 Value ($000) $1,956 Avg Close $54.55 Range $44.86 - $67.66
Q2 2023
Shares 46,564 Value ($000) $2,676 Avg Close $44.33 Range $35.62 - $58.70
Q1 2023
Shares 48,216 Value ($000) $1,808 Avg Close $32.78 Range $27.58 - $38.22
Q4 2022
Shares 49,409 Value ($000) $1,384 Avg Close $29.04 Range $26.76 - $31.64
Q3 2022
Shares 49,024 Value ($000) $1,378 Avg Close $32.65 Range $27.10 - $39.07
Q2 2022
Shares 49,751 Value ($000) $1,731 Avg Close $35.69 Range $28.64 - $44.46
Q1 2022
Shares 48,368 Value ($000) $1,736 Avg Close $28.36 Range $22.07 - $37.16
Q4 2021
Shares 52,424 Value ($000) $1,221 Avg Close $20.45 Range $18.12 - $23.85
Q3 2021
Shares 50,866 Value ($000) $967 Avg Close $19.59 Range $17.56 - $21.63
Q2 2021
Shares 51,101 Value ($000) $1,030 Avg Close $18.84 Range $16.91 - $20.94
Q1 2021
Shares 54,945 Value ($000) $1,007 Avg Close $18.59 Range $17.11 - $20.93
Q4 2020
Shares 55,143 Value ($000) $1,109 Avg Close $19.46 Range $17.51 - $21.38
Q3 2020
Shares 55,143 Value ($000) $1,034 Avg Close $20.14 Range $17.83 - $22.69
Q2 2020
Shares 54,193 Value ($000) $1,217 Avg Close $18.31 Range $14.00 - $22.50
Q1 2020
Shares 54,193 Value ($000) $804 Avg Close $17.40 Range $12.33 - $20.40
Q4 2019
Shares 54,321 Value ($000) $1,048 Avg Close $19.18 Range $16.71 - $20.89
Q3 2019
Shares 55,912 Value ($000) $1,109 Avg Close $20.83 Range $18.66 - $22.85
Q2 2019
Shares 55,244 Value ($000) $1,166 Avg Close $20.90 Range $18.60 - $23.06
Q1 2019
Shares 53,838 Value ($000) $1,100 Avg Close $22.40 Range $19.32 - $25.43
Q4 2018
Shares 56,973 Value ($000) $1,134 Avg Close $19.71 Range $17.71 - $22.74
Q3 2018
Shares 54,411 Value ($000) $1,047 Avg Close $17.82 Range $15.04 - $19.50
Q2 2018
Shares 54,414 Value ($000) $830 Avg Close $17.48 Range $14.40 - $19.94
Q1 2018
Shares 55,238 Value ($000) $1,036 Avg Close $18.80 Range $16.76 - $20.45
Q4 2017
Shares 57,208 Value ($000) $1,101 Avg Close $18.67 Range $17.00 - $19.95
Q3 2017
Shares 58,013 Value ($000) $1,037 Avg Close $16.45 Range $14.53 - $18.67
Q2 2017
Shares 64,333 Value ($000) $1,149 Avg Close $15.86 Range $13.15 - $17.95
Q1 2017
Shares 70,133 Value ($000) $1,017 Avg Close $15.72 Range $12.05 - $19.64
Q4 2016
Shares 73,433 Value ($000) $1,353 Avg Close $19.45 Range $16.87 - $21.75
Q3 2016
Shares 75,333 Value ($000) $1,429 Avg Close $18.15 Range $15.62 - $21.53
Q2 2016
Shares 74,633 Value ($000) $1,203 Avg Close $14.11 Range $11.41 - $16.78
Q1 2016
Shares 67,342 Value ($000) $808 Avg Close $11.79 Range $10.50 - $14.18
Q4 2015
Shares 58,831 Value ($000) $837 Avg Close $13.21 Range $10.57 - $15.84
Q3 2015
Shares 57,822 Value ($000) $676 Avg Close $15.00 Range $10.61 - $18.30
Q2 2015
Shares 58,022 Value ($000) $1,020 Avg Close $15.59 Range $13.55 - $18.25
Q1 2015
Shares 17,173 Value ($000) $257 Avg Close $13.37 Range $11.12 - $15.79
Q4 2014
Shares 17,173 Value ($000) $199 Avg Close $10.89 Range $9.76 - $12.46
Q3 2014
Shares 17,100 Value ($000) $199 Avg Close $10.42 Range $8.32 - $12.52