ANTERO MIDSTREAM CORP

Ticker: AM CUSIP: 03676B102 Class: Com

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

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

Q4 2025

Shares 338,013 Value ($000) $6,013 Avg Close $17.75 Range $16.76 - $19.24

Q3 2025

Shares 338,252 Value ($000) $6,576 Avg Close $17.58 Range $16.36 - $19.34

Q2 2025

Shares 332,400 Value ($000) $6,299 Avg Close $17.16 Range $14.32 - $18.38

Q1 2025

Shares 332,400 Value ($000) $5,983 Avg Close $15.67 Range $14.22 - $17.38

Q4 2024

Shares 336,042 Value ($000) $5,071 Avg Close $14.21 Range $13.32 - $14.99

Q3 2024

Shares 340,022 Value ($000) $5,117 Avg Close $13.39 Range $12.11 - $14.12

Q2 2024

Shares 349,678 Value ($000) $5,154 Avg Close $12.99 Range $12.03 - $13.72

Q1 2024

Shares 357,924 Value ($000) $5,032 Avg Close $11.39 Range $10.36 - $12.63

Q4 2023

Shares 376,570 Value ($000) $4,718 Avg Close $11.02 Range $9.92 - $11.82

Q3 2023

Shares 393,646 Value ($000) $4,716 Avg Close $10.17 Range $9.62 - $10.67

Q2 2023

Shares 408,582 Value ($000) $4,740 Avg Close $8.94 Range $8.20 - $9.87

Q1 2023

Shares 399,083 Value ($000) $4,186 Avg Close $8.76 Range $7.91 - $9.37

Q4 2022

Shares 405,636 Value ($000) $4,377 Avg Close $8.56 Range $7.39 - $9.41

Q3 2022

Shares 401,164 Value ($000) $3,683 Avg Close $7.77 Range $6.64 - $8.55

Q2 2022

Shares 408,244 Value ($000) $3,695 Avg Close $8.02 Range $6.79 - $8.88

Q1 2022

Shares 408,073 Value ($000) $4,436 Avg Close $7.65 Range $6.95 - $8.72

Q4 2021

Shares 445,184 Value ($000) $4,309 Avg Close $7.64 Range $6.72 - $8.52

Q3 2021

Shares 542,117 Value ($000) $5,649 Avg Close $7.08 Range $6.12 - $7.87

Q2 2021

Shares 568,829 Value ($000) $5,910 Avg Close $6.74 Range $5.73 - $7.60

Q1 2021

Shares 498,139 Value ($000) $4,498 Avg Close $5.90 Range $5.05 - $6.72

Q4 2020

Shares 498,966 Value ($000) $3,847 Avg Close $4.46 Range $3.23 - $5.76

Q3 2020

Shares 490,862 Value ($000) $2,636 Avg Close $3.81 Range $3.03 - $4.82

Q2 2020

Shares 482,374 Value ($000) $2,460 Avg Close $2.62 Range $1.11 - $3.87

Q1 2020

Shares 402,881 Value ($000) $846 Avg Close $2.61 Range $0.95 - $4.18

Q4 2019

Shares 392,052 Value ($000) $2,976 Avg Close $3.30 Range $2.26 - $4.29

Q3 2019

Shares 359,458 Value ($000) $2,660 Avg Close $4.34 Range $3.32 - $6.15

Q2 2019

Shares 358,488 Value ($000) $4,108 Avg Close $6.28 Range $5.32 - $7.00

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	338,013	$6,013	$17.75	$16.76 - $19.24
Q3 2025	338,252	$6,576	$17.58	$16.36 - $19.34
Q2 2025	332,400	$6,299	$17.16	$14.32 - $18.38
Q1 2025	332,400	$5,983	$15.67	$14.22 - $17.38
Q4 2024	336,042	$5,071	$14.21	$13.32 - $14.99
Q3 2024	340,022	$5,117	$13.39	$12.11 - $14.12
Q2 2024	349,678	$5,154	$12.99	$12.03 - $13.72
Q1 2024	357,924	$5,032	$11.39	$10.36 - $12.63
Q4 2023	376,570	$4,718	$11.02	$9.92 - $11.82
Q3 2023	393,646	$4,716	$10.17	$9.62 - $10.67
Q2 2023	408,582	$4,740	$8.94	$8.20 - $9.87
Q1 2023	399,083	$4,186	$8.76	$7.91 - $9.37
Q4 2022	405,636	$4,377	$8.56	$7.39 - $9.41
Q3 2022	401,164	$3,683	$7.77	$6.64 - $8.55
Q2 2022	408,244	$3,695	$8.02	$6.79 - $8.88
Q1 2022	408,073	$4,436	$7.65	$6.95 - $8.72
Q4 2021	445,184	$4,309	$7.64	$6.72 - $8.52
Q3 2021	542,117	$5,649	$7.08	$6.12 - $7.87
Q2 2021	568,829	$5,910	$6.74	$5.73 - $7.60
Q1 2021	498,139	$4,498	$5.90	$5.05 - $6.72
Q4 2020	498,966	$3,847	$4.46	$3.23 - $5.76
Q3 2020	490,862	$2,636	$3.81	$3.03 - $4.82
Q2 2020	482,374	$2,460	$2.62	$1.11 - $3.87
Q1 2020	402,881	$846	$2.61	$0.95 - $4.18
Q4 2019	392,052	$2,976	$3.30	$2.26 - $4.29
Q3 2019	359,458	$2,660	$4.34	$3.32 - $6.15
Q2 2019	358,488	$4,108	$6.28	$5.32 - $7.00