DT MIDSTREAM INC

Ticker: DTM CUSIP: 23345M107 Class: COMMON STOCK

Columbia Asset Management's Holding History (CIK: 0001585047)

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

Q4 2021

Shares 4,970 Value ($000) $238 Avg Close $39.86 Range $37.12 - $41.95

Q3 2021

Shares 7,288 Value ($000) $337 Avg Close $35.96 Range $31.53 - $39.88

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2021	4,970	$238	$39.86	$37.12 - $41.95
Q3 2021	7,288	$337	$35.96	$31.53 - $39.88