DT Midstream (DTM) Proxy filing summary

Executive summary

• The 2026 Annual Meeting will be held virtually on May 5, 2026, with voting available online, by phone, or mail.

• Key 2025 achievements include a final investment decision on the Guardian Pipeline G3 expansion, investment grade credit ratings from all major agencies, and the Haynesville System (LEAP) Phase 4 expansion entering service.

• The Board consists of seven directors, five of whom are independent, with a focus on diversity, ESG, and strong governance practices.

Voting matters and shareholder proposals

• Shareholders will vote to elect seven directors, ratify PwC as the independent auditor for 2026, approve executive compensation on an advisory basis, and consider a shareholder proposal to permit action by written consent.

• The Board recommends voting FOR all directors, FOR auditor ratification, FOR executive compensation, and AGAINST the written consent proposal.

• The Board opposes the written consent proposal, citing sufficient existing shareholder rights and concerns about transparency and minority action.

Board of directors and corporate governance

• The Board is structured as a C-Corp, with a majority of independent directors and a Lead Independent Director.

• Directors bring diverse experience in energy, finance, public company leadership, and regulatory affairs.

• Annual Board and committee self-assessments are conducted, and director orientation and continuing education are emphasized.

• Board leadership structure allows for separation or combination of Chairman and CEO roles, with a Lead Independent Director providing additional oversight.

• Directors are elected annually, with age limits subject to Board waiver for continuity.