DT MIDSTREAM INC

Ticker: DTM CUSIP: 23345M107 Class: COMMON STOCK

GROUP ONE TRADING, L.P.'s Holding History (CIK: 0000932540)

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

Q4 2024

Shares 416 Value ($000) $41 Avg Close $91.78 Range $75.01 - $105.74

Q1 2024

Shares 100 Value ($000) $6 Avg Close $51.93 Range $47.65 - $57.82

Q1 2023

Shares 58 Value ($000) $3 Avg Close $45.81 Range $41.06 - $48.99

Q4 2021

Shares 100 Value ($000) $5 Avg Close $39.86 Range $37.12 - $41.95

Q3 2021

Shares 50 Value ($000) $2 Avg Close $35.96 Range $31.53 - $39.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2024	416	$41	$91.78	$75.01 - $105.74
Q1 2024	100	$6	$51.93	$47.65 - $57.82
Q1 2023	58	$3	$45.81	$41.06 - $48.99
Q4 2021	100	$5	$39.86	$37.12 - $41.95
Q3 2021	50	$2	$35.96	$31.53 - $39.88