AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

DIMENSIONAL FUND ADVISORS LP's Holding History (CIK: 0000354204)

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

Q4 2025
Shares 1,799,685 Value ($000) $48,196 Avg Close $25.76 Range $22.94 - $29.00
Q3 2025
Shares 1,755,665 Value ($000) $46,789 Avg Close $25.82 Range $20.39 - $31.26
Q2 2025
Shares 1,626,884 Value ($000) $37,354 Avg Close $24.82 Range $22.64 - $29.27
Q1 2025
Shares 1,356,360 Value ($000) $39,319 Avg Close $31.94 Range $25.89 - $39.01
Q4 2024
Shares 1,198,590 Value ($000) $44,503 Avg Close $45.73 Range $36.48 - $53.96
Q3 2024
Shares 1,093,302 Value ($000) $53,057 Avg Close $43.89 Range $36.56 - $50.62
Q2 2024
Shares 1,070,275 Value ($000) $42,811 Avg Close $41.44 Range $38.43 - $46.62
Q1 2024
Shares 1,183,830 Value ($000) $51,982 Avg Close $51.65 Range $42.16 - $65.92
Q4 2023
Shares 1,339,142 Value ($000) $82,827 Avg Close $52.53 Range $43.79 - $63.67
Q3 2023
Shares 1,887,738 Value ($000) $86,821 Avg Close $54.55 Range $44.86 - $67.66
Q2 2023
Shares 1,930,615 Value ($000) $110,948 Avg Close $44.33 Range $35.62 - $58.70
Q1 2023
Shares 1,917,571 Value ($000) $71,909 Avg Close $32.78 Range $27.58 - $38.22
Q4 2022
Shares 1,866,544 Value ($000) $52 Avg Close $29.04 Range $26.76 - $31.64
Q3 2022
Shares 1,839,134 Value ($000) $51,683 Avg Close $32.65 Range $27.10 - $39.07
Q2 2022
Shares 1,826,043 Value ($000) $63,526 Avg Close $35.69 Range $28.64 - $44.46
Q1 2022
Shares 1,796,269 Value ($000) $64,488 Avg Close $28.36 Range $22.07 - $37.16
Q4 2021
Shares 1,770,851 Value ($000) $41,243 Avg Close $20.45 Range $18.12 - $23.85
Q3 2021
Shares 1,744,915 Value ($000) $33,171 Avg Close $19.59 Range $17.56 - $21.63
Q2 2021
Shares 1,695,893 Value ($000) $34,189 Avg Close $18.84 Range $16.91 - $20.94
Q1 2021
Shares 1,689,089 Value ($000) $31,011 Avg Close $18.59 Range $17.11 - $20.93
Q4 2020
Shares 1,807,385 Value ($000) $36,346 Avg Close $19.46 Range $17.51 - $21.38
Q3 2020
Shares 1,825,993 Value ($000) $34,237 Avg Close $20.14 Range $17.83 - $22.69
Q2 2020
Shares 1,842,822 Value ($000) $41,389 Avg Close $18.31 Range $14.00 - $22.50
Q1 2020
Shares 1,847,353 Value ($000) $27,415 Avg Close $17.40 Range $12.33 - $20.40
Q4 2019
Shares 1,808,678 Value ($000) $34,889 Avg Close $19.18 Range $16.71 - $20.89
Q3 2019
Shares 1,803,033 Value ($000) $35,755 Avg Close $20.83 Range $18.66 - $22.85
Q2 2019
Shares 1,817,653 Value ($000) $38,370 Avg Close $20.90 Range $18.60 - $23.06
Q1 2019
Shares 1,924,249 Value ($000) $39,313 Avg Close $22.40 Range $19.32 - $25.43
Q4 2018
Shares 1,901,231 Value ($000) $37,835 Avg Close $19.71 Range $17.71 - $22.74
Q3 2018
Shares 1,909,883 Value ($000) $36,746 Avg Close $17.82 Range $15.04 - $19.50
Q2 2018
Shares 1,769,533 Value ($000) $27,004 Avg Close $17.48 Range $14.40 - $19.94
Q1 2018
Shares 1,685,448 Value ($000) $31,602 Avg Close $18.80 Range $16.76 - $20.45
Q4 2017
Shares 1,631,802 Value ($000) $31,397 Avg Close $18.67 Range $17.00 - $19.95
Q3 2017
Shares 1,558,113 Value ($000) $27,844 Avg Close $16.45 Range $14.53 - $18.67
Q2 2017
Shares 1,331,842 Value ($000) $23,786 Avg Close $15.86 Range $13.15 - $17.95
Q1 2017
Shares 1,061,188 Value ($000) $15,388 Avg Close $15.72 Range $12.05 - $19.64
Q4 2016
Shares 800,900 Value ($000) $14,753 Avg Close $19.45 Range $16.87 - $21.75
Q3 2016
Shares 476,857 Value ($000) $9,046 Avg Close $18.15 Range $15.62 - $21.53
Q2 2016
Shares 361,010 Value ($000) $5,819 Avg Close $14.11 Range $11.41 - $16.78
Q1 2016
Shares 257,454 Value ($000) $3,089 Avg Close $11.79 Range $10.50 - $14.18
Q4 2015
Shares 68,188 Value ($000) $970 Avg Close $13.21 Range $10.57 - $15.84