AMPHASTAR PHARMACEUTICALS IN

Ticker: AMPH CUSIP: 03209R103 Class: Common Stock

COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS's Holding History (CIK: 0001083190)

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

Q4 2025

Shares 8,760 Value ($000) $235 Avg Close $25.76 Range $22.94 - $29.00

Q3 2025

Shares 9,118 Value ($000) $243 Avg Close $25.82 Range $20.39 - $31.26

Q2 2025

Shares 9,440 Value ($000) $217 Avg Close $24.82 Range $22.64 - $29.27

Q1 2025

Shares 8,975 Value ($000) $260 Avg Close $31.94 Range $25.89 - $39.01

Q4 2024

Shares 8,006 Value ($000) $297 Avg Close $45.73 Range $36.48 - $53.96

Q3 2024

Shares 8,115 Value ($000) $394 Avg Close $43.89 Range $36.56 - $50.62

Q2 2024

Shares 8,219 Value ($000) $329 Avg Close $41.44 Range $38.43 - $46.62

Q1 2024

Shares 8,070 Value ($000) $354 Avg Close $51.65 Range $42.16 - $65.92

Q4 2023

Shares 8,064 Value ($000) $499 Avg Close $52.53 Range $43.79 - $63.67

Q3 2023

Shares 25,477 Value ($000) $1,172 Avg Close $54.55 Range $44.86 - $67.66

Q2 2023

Shares 42,563 Value ($000) $2,446 Avg Close $44.33 Range $35.62 - $58.70

Q1 2023

Shares 39,916 Value ($000) $1,497 Avg Close $32.78 Range $27.58 - $38.22

Q4 2022

Shares 40,346 Value ($000) $1 Avg Close $29.04 Range $26.76 - $31.64

Q3 2022

Shares 34,834 Value ($000) $979 Avg Close $32.65 Range $27.10 - $39.07

Q2 2022

Shares 34,275 Value ($000) $1,192 Avg Close $35.69 Range $28.64 - $44.46

Q1 2022

Shares 31,763 Value ($000) $1,140 Avg Close $28.36 Range $22.07 - $37.16

Q4 2021

Shares 27,847 Value ($000) $649 Avg Close $20.45 Range $18.12 - $23.85

Q3 2021

Shares 28,042 Value ($000) $533 Avg Close $19.59 Range $17.56 - $21.63

Q2 2021

Shares 28,148 Value ($000) $567 Avg Close $18.84 Range $16.91 - $20.94

Q1 2021

Shares 28,209 Value ($000) $517 Avg Close $18.59 Range $17.11 - $20.93

Q4 2020

Shares 28,335 Value ($000) $570 Avg Close $19.46 Range $17.51 - $21.38

Q3 2020

Shares 28,373 Value ($000) $532 Avg Close $20.14 Range $17.83 - $22.69

Q2 2020

Shares 16,976 Value ($000) $381 Avg Close $18.31 Range $14.00 - $22.50

Q1 2020

Shares 17,240 Value ($000) $256 Avg Close $17.40 Range $12.33 - $20.40

Q4 2019

Shares 11,616 Value ($000) $224 Avg Close $19.18 Range $16.71 - $20.89

Q3 2019

Shares 11,693 Value ($000) $232 Avg Close $20.83 Range $18.66 - $22.85

Q2 2019

Shares 12,089 Value ($000) $255 Avg Close $20.90 Range $18.60 - $23.06

Q1 2019

Shares 11,866 Value ($000) $242 Avg Close $22.40 Range $19.32 - $25.43

Q4 2018

Shares 11,855 Value ($000) $236 Avg Close $19.71 Range $17.71 - $22.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	8,760	$235	$25.76	$22.94 - $29.00
Q3 2025	9,118	$243	$25.82	$20.39 - $31.26
Q2 2025	9,440	$217	$24.82	$22.64 - $29.27
Q1 2025	8,975	$260	$31.94	$25.89 - $39.01
Q4 2024	8,006	$297	$45.73	$36.48 - $53.96
Q3 2024	8,115	$394	$43.89	$36.56 - $50.62
Q2 2024	8,219	$329	$41.44	$38.43 - $46.62
Q1 2024	8,070	$354	$51.65	$42.16 - $65.92
Q4 2023	8,064	$499	$52.53	$43.79 - $63.67
Q3 2023	25,477	$1,172	$54.55	$44.86 - $67.66
Q2 2023	42,563	$2,446	$44.33	$35.62 - $58.70
Q1 2023	39,916	$1,497	$32.78	$27.58 - $38.22
Q4 2022	40,346	$1	$29.04	$26.76 - $31.64
Q3 2022	34,834	$979	$32.65	$27.10 - $39.07
Q2 2022	34,275	$1,192	$35.69	$28.64 - $44.46
Q1 2022	31,763	$1,140	$28.36	$22.07 - $37.16
Q4 2021	27,847	$649	$20.45	$18.12 - $23.85
Q3 2021	28,042	$533	$19.59	$17.56 - $21.63
Q2 2021	28,148	$567	$18.84	$16.91 - $20.94
Q1 2021	28,209	$517	$18.59	$17.11 - $20.93
Q4 2020	28,335	$570	$19.46	$17.51 - $21.38
Q3 2020	28,373	$532	$20.14	$17.83 - $22.69
Q2 2020	16,976	$381	$18.31	$14.00 - $22.50
Q1 2020	17,240	$256	$17.40	$12.33 - $20.40
Q4 2019	11,616	$224	$19.18	$16.71 - $20.89
Q3 2019	11,693	$232	$20.83	$18.66 - $22.85
Q2 2019	12,089	$255	$20.90	$18.60 - $23.06
Q1 2019	11,866	$242	$22.40	$19.32 - $25.43
Q4 2018	11,855	$236	$19.71	$17.71 - $22.74