AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

CITADEL ADVISORS LLC's Holding History (CIK: 0001423053)

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

Q4 2025

Shares 228,724 Value ($000) $6,125 Avg Close $25.76 Range $22.94 - $29.00

Q3 2025

Shares 226,775 Value ($000) $6,044 Avg Close $25.82 Range $20.39 - $31.26

Q2 2025

Shares 292,345 Value ($000) $6,712 Avg Close $24.82 Range $22.64 - $29.27

Q1 2025

Shares 155,979 Value ($000) $4,522 Avg Close $31.94 Range $25.89 - $39.01

Q4 2024

Shares 140,413 Value ($000) $5,214 Avg Close $45.73 Range $36.48 - $53.96

Q3 2024

Shares 135,237 Value ($000) $6,563 Avg Close $43.89 Range $36.56 - $50.62

Q2 2024

Shares 263,151 Value ($000) $10,526 Avg Close $41.44 Range $38.43 - $46.62

Q1 2024

Shares 67,697 Value ($000) $2,973 Avg Close $51.65 Range $42.16 - $65.92

Q4 2023

Shares 116,199 Value ($000) $7,187 Avg Close $52.53 Range $43.79 - $63.67

Q3 2023

Shares 128,715 Value ($000) $5,920 Avg Close $54.55 Range $44.86 - $67.66

Q2 2023

Shares 177,950 Value ($000) $10,227 Avg Close $44.33 Range $35.62 - $58.70

Q1 2023

Shares 31,341 Value ($000) $1,175 Avg Close $32.78 Range $27.58 - $38.22

Q4 2022

Shares 42,507 Value ($000) $1,191 Avg Close $29.04 Range $26.76 - $31.64

Q3 2022

Shares 175,265 Value ($000) $4,925 Avg Close $32.65 Range $27.10 - $39.07

Q2 2022

Shares 41,398 Value ($000) $1,440 Avg Close $35.69 Range $28.64 - $44.46

Q1 2022

Shares 237,883 Value ($000) $8,540 Avg Close $28.36 Range $22.07 - $37.16

Q4 2021

Shares 213,522 Value ($000) $4,973 Avg Close $20.45 Range $18.12 - $23.85

Q2 2021

Shares 24,373 Value ($000) $492 Avg Close $18.84 Range $16.91 - $20.94

Q1 2021

Shares 39,429 Value ($000) $722 Avg Close $18.59 Range $17.11 - $20.93

Q4 2020

Shares 70,138 Value ($000) $1,410 Avg Close $19.46 Range $17.51 - $21.38

Q3 2020

Shares 53,974 Value ($000) $1,012 Avg Close $20.14 Range $17.83 - $22.69

Q2 2020

Shares 37,740 Value ($000) $848 Avg Close $18.31 Range $14.00 - $22.50

Q1 2020

Shares 86,215 Value ($000) $1,280 Avg Close $17.40 Range $12.33 - $20.40

Q3 2019

Shares 132,053 Value ($000) $2,618 Avg Close $20.83 Range $18.66 - $22.85

Q2 2019

Shares 57,286 Value ($000) $1,209 Avg Close $20.90 Range $18.60 - $23.06

Q1 2019

Shares 14,160 Value ($000) $289 Avg Close $22.40 Range $19.32 - $25.43

Q4 2018

Shares 32,014 Value ($000) $637 Avg Close $19.71 Range $17.71 - $22.74

Q1 2018

Shares 34,180 Value ($000) $641 Avg Close $18.80 Range $16.76 - $20.45

Q2 2017

Shares 92,576 Value ($000) $1,653 Avg Close $15.86 Range $13.15 - $17.95

Q1 2017

Shares 355,566 Value ($000) $5,156 Avg Close $15.72 Range $12.05 - $19.64

Q4 2016

Shares 18,487 Value ($000) $341 Avg Close $19.45 Range $16.87 - $21.75

Q3 2016

Shares 66,120 Value ($000) $1,254 Avg Close $18.15 Range $15.62 - $21.53

Q2 2016

Shares 215,231 Value ($000) $3,469 Avg Close $14.11 Range $11.41 - $16.78

Q1 2016

Shares 12,369 Value ($000) $148 Avg Close $11.79 Range $10.50 - $14.18

Q4 2015

Shares 10,336 Value ($000) $147 Avg Close $13.21 Range $10.57 - $15.84

Q2 2015

Shares 73,670 Value ($000) $1,295 Avg Close $15.59 Range $13.55 - $18.25

Q1 2015

Shares 58,162 Value ($000) $870 Avg Close $13.37 Range $11.12 - $15.79

Q4 2014

Shares 50,384 Value ($000) $585 Avg Close $10.89 Range $9.76 - $12.46

Q3 2014

Shares 15,700 Value ($000) $183 Avg Close $10.42 Range $8.32 - $12.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	228,724	$6,125	$25.76	$22.94 - $29.00
Q3 2025	226,775	$6,044	$25.82	$20.39 - $31.26
Q2 2025	292,345	$6,712	$24.82	$22.64 - $29.27
Q1 2025	155,979	$4,522	$31.94	$25.89 - $39.01
Q4 2024	140,413	$5,214	$45.73	$36.48 - $53.96
Q3 2024	135,237	$6,563	$43.89	$36.56 - $50.62
Q2 2024	263,151	$10,526	$41.44	$38.43 - $46.62
Q1 2024	67,697	$2,973	$51.65	$42.16 - $65.92
Q4 2023	116,199	$7,187	$52.53	$43.79 - $63.67
Q3 2023	128,715	$5,920	$54.55	$44.86 - $67.66
Q2 2023	177,950	$10,227	$44.33	$35.62 - $58.70
Q1 2023	31,341	$1,175	$32.78	$27.58 - $38.22
Q4 2022	42,507	$1,191	$29.04	$26.76 - $31.64
Q3 2022	175,265	$4,925	$32.65	$27.10 - $39.07
Q2 2022	41,398	$1,440	$35.69	$28.64 - $44.46
Q1 2022	237,883	$8,540	$28.36	$22.07 - $37.16
Q4 2021	213,522	$4,973	$20.45	$18.12 - $23.85
Q2 2021	24,373	$492	$18.84	$16.91 - $20.94
Q1 2021	39,429	$722	$18.59	$17.11 - $20.93
Q4 2020	70,138	$1,410	$19.46	$17.51 - $21.38
Q3 2020	53,974	$1,012	$20.14	$17.83 - $22.69
Q2 2020	37,740	$848	$18.31	$14.00 - $22.50
Q1 2020	86,215	$1,280	$17.40	$12.33 - $20.40
Q3 2019	132,053	$2,618	$20.83	$18.66 - $22.85
Q2 2019	57,286	$1,209	$20.90	$18.60 - $23.06
Q1 2019	14,160	$289	$22.40	$19.32 - $25.43
Q4 2018	32,014	$637	$19.71	$17.71 - $22.74
Q1 2018	34,180	$641	$18.80	$16.76 - $20.45
Q2 2017	92,576	$1,653	$15.86	$13.15 - $17.95
Q1 2017	355,566	$5,156	$15.72	$12.05 - $19.64
Q4 2016	18,487	$341	$19.45	$16.87 - $21.75
Q3 2016	66,120	$1,254	$18.15	$15.62 - $21.53
Q2 2016	215,231	$3,469	$14.11	$11.41 - $16.78
Q1 2016	12,369	$148	$11.79	$10.50 - $14.18
Q4 2015	10,336	$147	$13.21	$10.57 - $15.84
Q2 2015	73,670	$1,295	$15.59	$13.55 - $18.25
Q1 2015	58,162	$870	$13.37	$11.12 - $15.79
Q4 2014	50,384	$585	$10.89	$9.76 - $12.46
Q3 2014	15,700	$183	$10.42	$8.32 - $12.52