Company: DTK
Filing Date: 2025-03-13
Form Type: DEF 14A
Source: 0000936340-25-000081
Chunk: 20

Company: DTE ENERGY CO
Filing Date: 2025-03-13
Form: DEF 14A
Chunk 20
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 the Company website, dteenergy.com .

The Company has adoptedpolicies and procedures governing the purchase, sale, and/or other dispositions of its securities by directors, officers and employees. These policies and procedures are reasonably designed to promote compliance with insider trading laws, rules and regulations, as well as any applicable listing standards. It is Company policy to comply with all applicable laws when engaging in transactions in its securities.

#### Communications with the Board
The Company has established several methods for shareholders or other non-affiliated persons to communicate their concerns to the directors. Concerns regarding auditing, accounting practices, internal controls, or other business ethics issues may be submitted to the Audit Committee through its reporting channel:

| 877.406.9448                 |     | For auditing, accounting, orinternal control matters: |     | For business ethics issues:  |
|                              |     | DTE Energy Company                                    
 Audit Committee                                       
 One Energy Plaza                                      
 Room 2350 WCB                                         
 Detroit, Michigan 48226-1221                          |     | DTE Energy Company           
 Ethics and Employee Issues   
 One Energy Plaza             
 16th Floor WCB               
 Detroit, Michigan 48226-1221 |
| ethicsinaction.dteenergy.com |     |                                                       |     |                              |

Any other concern may be submitted to the Corporate Secretary by mail for prompt delivery to the Lead Independent Director at:

| Lead Independent Director, c/o Corporate Secretary 
 DTE Energy Company                                 
 One Energy Plaza                                   
 Room 2386 WCB                                      
 Detroit, Michigan 48226-1221                       |

#### 20DTE ENERGY2025 PROXY STATEMENT
Periodically, we revise our governance information in response to changing regulatory requirements and evolving corporate governance developments. Current copies of the Governance Guidelines, committee charters, categorical standards of director independence and the codes of ethics referred to above are available on our website at dteenergy.com/governance . A copy of any or all of these documents and a copy of the Company’s Annual Report on Form 10-K may be requested, free of charge, by mailing a request to the Corporate Secretary, DTE Energy Company, One Energy Plaza, Room 2386 WCB, Detroit, Michigan 48226-1221.

The information on the Company’s website is not, and shall not be deemed to be, a part of this proxy statement or incorporated into any other filings the Company makes with the SEC.

Committees of the Board of Directors

The Board has standing committees for Audit, Corporate