AI English summary of an SEC filing — figures as filed

DTE Energy said Mark W. Stiers, President and Chief Operating Officer of DTE Vantage and Energy Trading, notified the company on December 2, 2025 that he will retire, effective January 12, 2026.

8-KDeparture or Appointment of Directors or Certain OfficersFiled Dec 8, 2025Period of report Dec 2, 2025Summary published (UTC) Oct 13, 2026

Key points

AI summary

DTE Energy said Mark W. Stiers, President and Chief Operating Officer of DTE Vantage and Energy Trading, notified the company on December 2, 2025 that he will retire, effective January 12, 2026.
The company said Mr. Stiers will remain employed in an advisory role after he retires, and that his employment with the company will end no later than March 31, 2026.
The company said its board adopted amendments to the Bylaws on December 3, 2025, effective the same day. The amendments set requirements for shareholders to bring business before the annual shareholder meeting, including nominating a candidate for the board.
DTE Energy said the Bylaws amendments clarify the board's authority to determine that the annual shareholder meeting may be held by remote communication, and also reflect other minor corrections and edits.

Summary

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Analysis scope · Filing bodyWe analyzed the filing body and confirmed exhibits. This is not a review of other exhibits, investor presentations or the full earnings call.

Mark W. Stiers Retirement Notice

DTE Energy said Mark W. Stiers, President and Chief Operating Officer of DTE Vantage and Energy Trading, notified the company on December 2, 2025 that he will retire, effective January 12, 2026.

Source · Based on the filing body and exhibits

Advisory Role After Retirement and Employment End Deadline

The company said Mr. Stiers will remain employed in an advisory role after he retires, and that his employment with the company will end no later than March 31, 2026.

Source · Based on the filing body and exhibits

Bylaw Amendments Set Requirements for Annual Meeting Business

The company said its board adopted amendments to the Bylaws on December 3, 2025, effective the same day. The amendments set requirements for shareholders to bring business before the annual shareholder meeting, including nominating a candidate for the board.

Source · Based on the filing body and exhibits

Clarifies Board Authority to Hold Shareholder Meetings by Remote Communication

DTE Energy said the Bylaws amendments clarify the board's authority to determine that the annual shareholder meeting may be held by remote communication, and also reflect other minor corrections and edits.

Source · Based on the filing body and exhibits

AI summarized the filing and translated the summary into English; it may differ from the original. For reference only, not investment advice. AI translated the published Korean report into English. Figures are copied as filed, not recalculated.

Original filing

The filing as submitted to SEC EDGAR. You can check the figures and statements of this summary against it.

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