DT Midstream, Inc.

DTM·NYSE·$149.65Share Price as of 11/2·$15BMarket Cap as of 11/2

Financials

10-QQ3 ended 09/30/2610/29/26 10-QQ2 ended 06/30/2607/30/26 10-QQ1 ended 03/31/2604/30/26 10-KFY 202502/19/26 10-QQ3 ended 09/30/2510/30/25

Disclosures

8-KCurrent report10/29/26 8-KCurrent report07/30/26 8-KCurrent report05/12/26 8-KCurrent report05/07/26 8-KCurrent report04/30/26

Prospectuses and Registrations

S-8Registration of securities for employees02/19/26 424B5Prospectus supplement11/21/24 424B5Prospectus supplement11/20/24 S-3ASRAutomatic shelf registration11/19/24 S-8Registration of securities for employees07/01/21

Proxies

DEF 14ADefinitive proxy03/26/26 DEFA14AAdditional proxy materials03/26/26 DEF 14ADefinitive proxy03/27/25 DEFA14AAdditional proxy materials03/27/25 PRE 14APreliminary proxy03/14/25

Ownership

Form 3Initial insider ownership09/18/26 Form 4Insider transaction08/10/26 Form 4Insider transaction08/05/26 Form 4Insider transaction05/15/26 Form 4Insider transaction05/07/26

Other

ARSAnnual report to shareholders03/26/26 ARSAnnual report to shareholders03/27/25 ARSAnnual report to shareholders03/28/24 ARSAnnual report to shareholders03/23/23 UPLOADLetter from the SEC09/16/22