AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

WELLS FARGO & COMPANY/MN's Holding History (CIK: 0000072971)

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

Q4 2025

Shares 45,302 Value ($000) $1,213 Avg Close $25.76 Range $22.94 - $29.00

Q3 2025

Shares 28,751 Value ($000) $766 Avg Close $25.82 Range $20.39 - $31.26

Q2 2025

Shares 24,396 Value ($000) $560 Avg Close $24.82 Range $22.64 - $29.27

Q1 2025

Shares 29,361 Value ($000) $851 Avg Close $31.94 Range $25.89 - $39.01

Q4 2024

Shares 23,552 Value ($000) $874 Avg Close $45.73 Range $36.48 - $53.96

Q3 2024

Shares 42,688 Value ($000) $2,072 Avg Close $43.89 Range $36.56 - $50.62

Q2 2024

Shares 71,786 Value ($000) $2,871 Avg Close $41.44 Range $38.43 - $46.62

Q1 2024

Shares 57,241 Value ($000) $2,513 Avg Close $51.65 Range $42.16 - $65.92

Q4 2023

Shares 36,662 Value ($000) $2,268 Avg Close $52.53 Range $43.79 - $63.67

Q3 2023

Shares 28,223 Value ($000) $1,298 Avg Close $54.55 Range $44.86 - $67.66

Q2 2023

Shares 36,492 Value ($000) $2,097 Avg Close $44.33 Range $35.62 - $58.70

Q1 2023

Shares 17,091 Value ($000) $641 Avg Close $32.78 Range $27.58 - $38.22

Q4 2022

Shares 3,514 Value ($000) $98 Avg Close $29.04 Range $26.76 - $31.64

Q3 2022

Shares 4,861 Value ($000) $137 Avg Close $32.65 Range $27.10 - $39.07

Q2 2022

Shares 18,932 Value ($000) $659 Avg Close $35.69 Range $28.64 - $44.46

Q1 2022

Shares 80,685 Value ($000) $2,896 Avg Close $28.36 Range $22.07 - $37.16

Q4 2021

Shares 72,337 Value ($000) $1,685 Avg Close $20.45 Range $18.12 - $23.85

Q3 2021

Shares 315,629 Value ($000) $6,001 Avg Close $19.59 Range $17.56 - $21.63

Q2 2021

Shares 368,019 Value ($000) $7,419 Avg Close $18.84 Range $16.91 - $20.94

Q1 2021

Shares 182,335 Value ($000) $3,341 Avg Close $18.59 Range $17.11 - $20.93

Q4 2020

Shares 179,736 Value ($000) $3,615 Avg Close $19.46 Range $17.51 - $21.38

Q3 2020

Shares 209,040 Value ($000) $3,920 Avg Close $20.14 Range $17.83 - $22.69

Q2 2020

Shares 233,710 Value ($000) $5,249 Avg Close $18.31 Range $14.00 - $22.50

Q1 2020

Shares 100,092 Value ($000) $1,485 Avg Close $17.40 Range $12.33 - $20.40

Q4 2019

Shares 188,728 Value ($000) $3,640 Avg Close $19.18 Range $16.71 - $20.89

Q3 2019

Shares 175,545 Value ($000) $3,481 Avg Close $20.83 Range $18.66 - $22.85

Q2 2019

Shares 206,110 Value ($000) $4,351 Avg Close $20.90 Range $18.60 - $23.06

Q1 2019

Shares 255,844 Value ($000) $5,226 Avg Close $22.40 Range $19.32 - $25.43

Q4 2018

Shares 269,328 Value ($000) $5,359 Avg Close $19.71 Range $17.71 - $22.74

Q3 2018

Shares 241,037 Value ($000) $4,638 Avg Close $17.82 Range $15.04 - $19.50

Q2 2018

Shares 197,310 Value ($000) $3,011 Avg Close $17.48 Range $14.40 - $19.94

Q1 2018

Shares 192,369 Value ($000) $3,606 Avg Close $18.80 Range $16.76 - $20.45

Q4 2017

Shares 176,323 Value ($000) $3,392 Avg Close $18.67 Range $17.00 - $19.95

Q3 2017

Shares 68,837 Value ($000) $1,231 Avg Close $16.45 Range $14.53 - $18.67

Q2 2017

Shares 67,969 Value ($000) $1,213 Avg Close $15.86 Range $13.15 - $17.95

Q1 2017

Shares 82,665 Value ($000) $1,198 Avg Close $15.72 Range $12.05 - $19.64

Q4 2016

Shares 85,680 Value ($000) $1,579 Avg Close $19.45 Range $16.87 - $21.75

Q3 2016

Shares 53,213 Value ($000) $1,010 Avg Close $18.15 Range $15.62 - $21.53

Q2 2016

Shares 27,864 Value ($000) $449 Avg Close $14.11 Range $11.41 - $16.78

Q1 2016

Shares 17,820 Value ($000) $214 Avg Close $11.79 Range $10.50 - $14.18

Q4 2015

Shares 12,704 Value ($000) $181 Avg Close $13.21 Range $10.57 - $15.84

Q3 2015

Shares 7,502 Value ($000) $88 Avg Close $15.00 Range $10.61 - $18.30

Q2 2015

Shares 7,089 Value ($000) $125 Avg Close $15.59 Range $13.55 - $18.25

Q1 2015

Shares 13,004 Value ($000) $195 Avg Close $13.37 Range $11.12 - $15.79

Q4 2014

Shares 428 Value ($000) $5 Avg Close $10.89 Range $9.76 - $12.46

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	45,302	$1,213	$25.76	$22.94 - $29.00
Q3 2025	28,751	$766	$25.82	$20.39 - $31.26
Q2 2025	24,396	$560	$24.82	$22.64 - $29.27
Q1 2025	29,361	$851	$31.94	$25.89 - $39.01
Q4 2024	23,552	$874	$45.73	$36.48 - $53.96
Q3 2024	42,688	$2,072	$43.89	$36.56 - $50.62
Q2 2024	71,786	$2,871	$41.44	$38.43 - $46.62
Q1 2024	57,241	$2,513	$51.65	$42.16 - $65.92
Q4 2023	36,662	$2,268	$52.53	$43.79 - $63.67
Q3 2023	28,223	$1,298	$54.55	$44.86 - $67.66
Q2 2023	36,492	$2,097	$44.33	$35.62 - $58.70
Q1 2023	17,091	$641	$32.78	$27.58 - $38.22
Q4 2022	3,514	$98	$29.04	$26.76 - $31.64
Q3 2022	4,861	$137	$32.65	$27.10 - $39.07
Q2 2022	18,932	$659	$35.69	$28.64 - $44.46
Q1 2022	80,685	$2,896	$28.36	$22.07 - $37.16
Q4 2021	72,337	$1,685	$20.45	$18.12 - $23.85
Q3 2021	315,629	$6,001	$19.59	$17.56 - $21.63
Q2 2021	368,019	$7,419	$18.84	$16.91 - $20.94
Q1 2021	182,335	$3,341	$18.59	$17.11 - $20.93
Q4 2020	179,736	$3,615	$19.46	$17.51 - $21.38
Q3 2020	209,040	$3,920	$20.14	$17.83 - $22.69
Q2 2020	233,710	$5,249	$18.31	$14.00 - $22.50
Q1 2020	100,092	$1,485	$17.40	$12.33 - $20.40
Q4 2019	188,728	$3,640	$19.18	$16.71 - $20.89
Q3 2019	175,545	$3,481	$20.83	$18.66 - $22.85
Q2 2019	206,110	$4,351	$20.90	$18.60 - $23.06
Q1 2019	255,844	$5,226	$22.40	$19.32 - $25.43
Q4 2018	269,328	$5,359	$19.71	$17.71 - $22.74
Q3 2018	241,037	$4,638	$17.82	$15.04 - $19.50
Q2 2018	197,310	$3,011	$17.48	$14.40 - $19.94
Q1 2018	192,369	$3,606	$18.80	$16.76 - $20.45
Q4 2017	176,323	$3,392	$18.67	$17.00 - $19.95
Q3 2017	68,837	$1,231	$16.45	$14.53 - $18.67
Q2 2017	67,969	$1,213	$15.86	$13.15 - $17.95
Q1 2017	82,665	$1,198	$15.72	$12.05 - $19.64
Q4 2016	85,680	$1,579	$19.45	$16.87 - $21.75
Q3 2016	53,213	$1,010	$18.15	$15.62 - $21.53
Q2 2016	27,864	$449	$14.11	$11.41 - $16.78
Q1 2016	17,820	$214	$11.79	$10.50 - $14.18
Q4 2015	12,704	$181	$13.21	$10.57 - $15.84
Q3 2015	7,502	$88	$15.00	$10.61 - $18.30
Q2 2015	7,089	$125	$15.59	$13.55 - $18.25
Q1 2015	13,004	$195	$13.37	$11.12 - $15.79
Q4 2014	428	$5	$10.89	$9.76 - $12.46