ANTERO MIDSTREAM CORP

Ticker: AM CUSIP: 03676B102 Class: Com

SeaBridge Investment Advisors LLC's Holding History (CIK: 0001304229)

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

Q4 2025

Shares 125,420 Value ($000) $2,231 Avg Close $17.75 Range $16.76 - $19.24

Q3 2025

Shares 131,211 Value ($000) $2,551 Avg Close $17.58 Range $16.36 - $19.34

Q2 2025

Shares 133,945 Value ($000) $2,538 Avg Close $17.16 Range $14.32 - $18.38

Q1 2025

Shares 134,737 Value ($000) $2,425 Avg Close $15.67 Range $14.22 - $17.38

Q4 2024

Shares 134,819 Value ($000) $2,034 Avg Close $14.21 Range $13.32 - $14.99

Q3 2024

Shares 133,941 Value ($000) $2,016 Avg Close $13.39 Range $12.11 - $14.12

Q2 2024

Shares 137,624 Value ($000) $2,029 Avg Close $12.99 Range $12.03 - $13.72

Q1 2024

Shares 94,561 Value ($000) $1,330 Avg Close $11.39 Range $10.36 - $12.63

Q4 2023

Shares 97,855 Value ($000) $1,226 Avg Close $11.02 Range $9.92 - $11.82

Q3 2020

Shares 7,000 Value ($000) $38 Avg Close $3.81 Range $3.03 - $4.82

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	125,420	$2,231	$17.75	$16.76 - $19.24
Q3 2025	131,211	$2,551	$17.58	$16.36 - $19.34
Q2 2025	133,945	$2,538	$17.16	$14.32 - $18.38
Q1 2025	134,737	$2,425	$15.67	$14.22 - $17.38
Q4 2024	134,819	$2,034	$14.21	$13.32 - $14.99
Q3 2024	133,941	$2,016	$13.39	$12.11 - $14.12
Q2 2024	137,624	$2,029	$12.99	$12.03 - $13.72
Q1 2024	94,561	$1,330	$11.39	$10.36 - $12.63
Q4 2023	97,855	$1,226	$11.02	$9.92 - $11.82
Q3 2020	7,000	$38	$3.81	$3.03 - $4.82