AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

MARSHALL WACE, LLP's Holding History (CIK: 0001318757)

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

Q4 2025
Shares 1,237,284 Value ($000) $33,134 Avg Close $25.76 Range $22.94 - $29.00
Q3 2025
Shares 874,068 Value ($000) $23,294 Avg Close $25.82 Range $20.39 - $31.26
Q2 2025
Shares 848,685 Value ($000) $19,486 Avg Close $24.82 Range $22.64 - $29.27
Q1 2025
Shares 1,031,722 Value ($000) $29,910 Avg Close $31.94 Range $25.89 - $39.01
Q4 2024
Shares 608,706 Value ($000) $22,601 Avg Close $45.73 Range $36.48 - $53.96
Q3 2024
Shares 568,494 Value ($000) $27,589 Avg Close $43.89 Range $36.56 - $50.62
Q2 2024
Shares 227,127 Value ($000) $9,085 Avg Close $41.44 Range $38.43 - $46.62
Q1 2023
Shares 64,209 Value ($000) $2,408 Avg Close $32.78 Range $27.58 - $38.22
Q3 2022
Shares 31,638 Value ($000) $890 Avg Close $32.65 Range $27.10 - $39.07
Q2 2022
Shares 28,441 Value ($000) $989 Avg Close $35.69 Range $28.64 - $44.46
Q1 2022
Shares 17,417 Value ($000) $625 Avg Close $28.36 Range $22.07 - $37.16
Q2 2020
Shares 132,228 Value ($000) $2,970 Avg Close $18.31 Range $14.00 - $22.50
Q1 2020
Shares 301,910 Value ($000) $4,481 Avg Close $17.40 Range $12.33 - $20.40
Q4 2019
Shares 294,064 Value ($000) $5,673 Avg Close $19.18 Range $16.71 - $20.89
Q3 2019
Shares 413,293 Value ($000) $8,196 Avg Close $20.83 Range $18.66 - $22.85