DT MIDSTREAM INC

Ticker: DTM CUSIP: 23345M107 Class: COMMON STOCK

Ballentine Partners, LLC's Holding History (CIK: 0001374889)

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

Q4 2025

Shares 2,560 Value ($000) $306 Avg Close $114.29 Range $104.28 - $121.96

Q3 2025

Shares 2,644 Value ($000) $299 Avg Close $103.16 Range $96.65 - $113.33

Q2 2025

Shares 2,604 Value ($000) $286 Avg Close $99.18 Range $81.47 - $109.51

Q1 2025

Shares 2,498 Value ($000) $241 Avg Close $97.17 Range $82.90 - $111.03

Q4 2024

Shares 2,384 Value ($000) $237 Avg Close $91.78 Range $75.01 - $105.74

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	2,560	$306	$114.29	$104.28 - $121.96
Q3 2025	2,644	$299	$103.16	$96.65 - $113.33
Q2 2025	2,604	$286	$99.18	$81.47 - $109.51
Q1 2025	2,498	$241	$97.17	$82.90 - $111.03
Q4 2024	2,384	$237	$91.78	$75.01 - $105.74