ALKERMES PLC

Ticker: ALKS CUSIP: G01767105 Class: Common Stock

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0001081019)

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

Q4 2025

Shares 148,793 Value ($000) $4,163 Avg Close $29.95 Range $27.49 - $36.32

Q3 2025

Shares 148,909 Value ($000) $4,467 Avg Close $28.20 Range $25.17 - $31.69

Q2 2025

Shares 144,931 Value ($000) $4,146 Avg Close $29.76 Range $25.56 - $33.48

Q1 2025

Shares 144,931 Value ($000) $4,786 Avg Close $32.61 Range $27.70 - $36.45

Q4 2024

Shares 146,628 Value ($000) $4,217 Avg Close $28.75 Range $25.67 - $32.25

Q3 2024

Shares 152,295 Value ($000) $4,263 Avg Close $26.66 Range $22.90 - $29.02

Q2 2024

Shares 157,863 Value ($000) $3,804 Avg Close $24.53 Range $23.14 - $27.56

Q1 2024

Shares 160,080 Value ($000) $4,333 Avg Close $28.40 Range $26.18 - $32.88

Q4 2023

Shares 168,660 Value ($000) $4,679 Avg Close $25.98 Range $22.01 - $29.02

Q3 2023

Shares 168,825 Value ($000) $4,729 Avg Close $29.32 Range $25.68 - $32.57

Q2 2023

Shares 185,384 Value ($000) $5,803 Avg Close $30.28 Range $27.68 - $33.71

Q1 2023

Shares 205,013 Value ($000) $5,779 Avg Close $27.24 Range $25.00 - $29.49

Q4 2022

Shares 208,120 Value ($000) $5,438 Avg Close $23.93 Range $21.75 - $26.34

Q3 2022

Shares 205,012 Value ($000) $4,578 Avg Close $26.01 Range $21.81 - $32.23

Q2 2022

Shares 208,276 Value ($000) $6,205 Avg Close $28.72 Range $26.14 - $32.79

Q1 2022

Shares 206,235 Value ($000) $5,426 Avg Close $24.77 Range $22.72 - $28.35

Q4 2021

Shares 223,933 Value ($000) $5,209 Avg Close $26.29 Range $21.24 - $33.00

Q3 2021

Shares 217,929 Value ($000) $6,721 Avg Close $28.25 Range $23.11 - $32.53

Q2 2021

Shares 221,230 Value ($000) $5,425 Avg Close $22.25 Range $18.43 - $25.47

Q1 2021

Shares 274,202 Value ($000) $5,122 Avg Close $20.47 Range $18.02 - $23.92

Q4 2020

Shares 275,157 Value ($000) $5,489 Avg Close $18.28 Range $15.35 - $22.22

Q3 2020

Shares 270,632 Value ($000) $4,484 Avg Close $18.17 Range $15.68 - $20.85

Q2 2020

Shares 275,850 Value ($000) $5,353 Avg Close $16.23 Range $13.03 - $19.86

Q1 2020

Shares 259,707 Value ($000) $3,745 Avg Close $17.85 Range $11.98 - $21.46

Q4 2019

Shares 241,376 Value ($000) $4,924 Avg Close $19.88 Range $17.11 - $21.88

Q3 2019

Shares 257,748 Value ($000) $5,029 Avg Close $21.76 Range $18.69 - $25.35

Q2 2019

Shares 257,076 Value ($000) $5,794 Avg Close $27.41 Range $21.29 - $37.75

Q1 2019

Shares 250,761 Value ($000) $9,150 Avg Close $33.02 Range $28.19 - $36.56

Q4 2018

Shares 249,525 Value ($000) $7,363 Avg Close $36.92 Range $27.54 - $45.16

Q3 2018

Shares 246,483 Value ($000) $10,461 Avg Close $43.40 Range $38.23 - $46.98

Q2 2018

Shares 246,458 Value ($000) $10,144 Avg Close $45.54 Range $39.54 - $51.70

Q1 2018

Shares 242,999 Value ($000) $14,084 Avg Close $58.50 Range $51.68 - $71.22

Q4 2017

Shares 251,124 Value ($000) $13,744 Avg Close $51.03 Range $46.43 - $56.58

Q3 2017

Shares 252,773 Value ($000) $12,851 Avg Close $53.48 Range $48.90 - $61.31

Q2 2017

Shares 278,886 Value ($000) $16,167 Avg Close $58.09 Range $53.64 - $63.40

Q1 2017

Shares 298,929 Value ($000) $17,487 Avg Close $56.71 Range $51.08 - $62.50

Q4 2016

Shares 312,429 Value ($000) $17,365 Avg Close $53.46 Range $41.93 - $60.74

Q3 2016

Shares 320,829 Value ($000) $15,089 Avg Close $47.55 Range $43.26 - $52.27

Q2 2016

Shares 318,229 Value ($000) $13,754 Avg Close $41.26 Range $33.31 - $47.90

Q1 2016

Shares 317,273 Value ($000) $10,848 Avg Close $39.49 Range $27.14 - $78.88

Q4 2015

Shares 276,938 Value ($000) $21,983 Avg Close $70.02 Range $54.36 - $80.71

Q3 2015

Shares 272,545 Value ($000) $15,990 Avg Close $66.02 Range $53.01 - $73.33

Q2 2015

Shares 271,455 Value ($000) $17,465 Avg Close $61.20 Range $54.54 - $68.23

Q1 2015

Shares 265,904 Value ($000) $16,212 Avg Close $68.32 Range $57.31 - $75.17

Q4 2014

Shares 270,592 Value ($000) $15,846 Avg Close $50.94 Range $38.49 - $59.69

Q3 2014

Shares 268,047 Value ($000) $11,491 Avg Close $44.82 Range $41.02 - $52.50

Q2 2014

Shares 263,825 Value ($000) $13,278 Avg Close $46.12 Range $40.30 - $51.81

Q1 2014

Shares 246,125 Value ($000) $10,852 Avg Close $47.58 Range $39.68 - $54.25

Q4 2013

Shares 228,825 Value ($000) $9,304 Avg Close $36.93 Range $29.36 - $41.47

Q3 2013

Shares 227,325 Value ($000) $7,643 Avg Close $32.55 Range $27.72 - $35.72

Q2 2013

Shares 220,283 Value ($000) $6,318 Avg Close $29.15 Range $22.17 - $34.30

Q1 2013

Shares 212,881 Value ($000) $5,047 Avg Close $21.93 Range $18.64 - $24.02

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	148,793	$4,163	$29.95	$27.49 - $36.32
Q3 2025	148,909	$4,467	$28.20	$25.17 - $31.69
Q2 2025	144,931	$4,146	$29.76	$25.56 - $33.48
Q1 2025	144,931	$4,786	$32.61	$27.70 - $36.45
Q4 2024	146,628	$4,217	$28.75	$25.67 - $32.25
Q3 2024	152,295	$4,263	$26.66	$22.90 - $29.02
Q2 2024	157,863	$3,804	$24.53	$23.14 - $27.56
Q1 2024	160,080	$4,333	$28.40	$26.18 - $32.88
Q4 2023	168,660	$4,679	$25.98	$22.01 - $29.02
Q3 2023	168,825	$4,729	$29.32	$25.68 - $32.57
Q2 2023	185,384	$5,803	$30.28	$27.68 - $33.71
Q1 2023	205,013	$5,779	$27.24	$25.00 - $29.49
Q4 2022	208,120	$5,438	$23.93	$21.75 - $26.34
Q3 2022	205,012	$4,578	$26.01	$21.81 - $32.23
Q2 2022	208,276	$6,205	$28.72	$26.14 - $32.79
Q1 2022	206,235	$5,426	$24.77	$22.72 - $28.35
Q4 2021	223,933	$5,209	$26.29	$21.24 - $33.00
Q3 2021	217,929	$6,721	$28.25	$23.11 - $32.53
Q2 2021	221,230	$5,425	$22.25	$18.43 - $25.47
Q1 2021	274,202	$5,122	$20.47	$18.02 - $23.92
Q4 2020	275,157	$5,489	$18.28	$15.35 - $22.22
Q3 2020	270,632	$4,484	$18.17	$15.68 - $20.85
Q2 2020	275,850	$5,353	$16.23	$13.03 - $19.86
Q1 2020	259,707	$3,745	$17.85	$11.98 - $21.46
Q4 2019	241,376	$4,924	$19.88	$17.11 - $21.88
Q3 2019	257,748	$5,029	$21.76	$18.69 - $25.35
Q2 2019	257,076	$5,794	$27.41	$21.29 - $37.75
Q1 2019	250,761	$9,150	$33.02	$28.19 - $36.56
Q4 2018	249,525	$7,363	$36.92	$27.54 - $45.16
Q3 2018	246,483	$10,461	$43.40	$38.23 - $46.98
Q2 2018	246,458	$10,144	$45.54	$39.54 - $51.70
Q1 2018	242,999	$14,084	$58.50	$51.68 - $71.22
Q4 2017	251,124	$13,744	$51.03	$46.43 - $56.58
Q3 2017	252,773	$12,851	$53.48	$48.90 - $61.31
Q2 2017	278,886	$16,167	$58.09	$53.64 - $63.40
Q1 2017	298,929	$17,487	$56.71	$51.08 - $62.50
Q4 2016	312,429	$17,365	$53.46	$41.93 - $60.74
Q3 2016	320,829	$15,089	$47.55	$43.26 - $52.27
Q2 2016	318,229	$13,754	$41.26	$33.31 - $47.90
Q1 2016	317,273	$10,848	$39.49	$27.14 - $78.88
Q4 2015	276,938	$21,983	$70.02	$54.36 - $80.71
Q3 2015	272,545	$15,990	$66.02	$53.01 - $73.33
Q2 2015	271,455	$17,465	$61.20	$54.54 - $68.23
Q1 2015	265,904	$16,212	$68.32	$57.31 - $75.17
Q4 2014	270,592	$15,846	$50.94	$38.49 - $59.69
Q3 2014	268,047	$11,491	$44.82	$41.02 - $52.50
Q2 2014	263,825	$13,278	$46.12	$40.30 - $51.81
Q1 2014	246,125	$10,852	$47.58	$39.68 - $54.25
Q4 2013	228,825	$9,304	$36.93	$29.36 - $41.47
Q3 2013	227,325	$7,643	$32.55	$27.72 - $35.72
Q2 2013	220,283	$6,318	$29.15	$22.17 - $34.30
Q1 2013	212,881	$5,047	$21.93	$18.64 - $24.02