Company: AWK
Filing Date: 2025-03-27
Form Type: DEF 14A
Source: 0001193125-25-064607
Chunk: 99

Company: American Water Works Company, Inc.
Filing Date: 2025-03-27
Form: DEF 14A
Chunk 99
---
 the meeting or any adjournment, continuation or postponement thereof. |     |                                                                                                                                                                                                             |     |     |     |         |     |         |

| Please sign exactly as your name(s) appear(s) hereon. When signing as attorney, executor, administrator, or other fiduciary, please give full title as such. Joint owners should each sign personally. All holders must sign. If a corporation or partnership, please sign in full corporate or partnership name by authorized officer. |

| Signature [PLEASE SIGN WITHIN BOX]          Date |     | Signature (Joint Owners)               Date |

<div align='center'>**Important Notice Regarding the Availability of Proxy Materials for the Annual Meeting:

The 2025 Proxy Statement, 2024 Annual Report and form of Proxy Card are available at www.proxyvote.com.

To permit broad access to the meeting by shareholders and employees, American Water will hold its 2025 Annual Meeting virtually, rather than at a physical location. You will not be able to attend the Annual Meeting in person.

To be admitted to the Annual Meeting, please access the virtual meeting platform on the Internet at www.virtualshareholdermeeting.com/AWK2025. Shareholders or their legal proxies must log on to the platform by entering the 16-digit control number included on the Proxy Card or Notice of Availability. Online access to the Annual Meeting will open approximately 15 minutes prior to the start of the virtual meeting.**</div>

— — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — — —

V69686-P24840

#### AMERICAN WATER WORKS COMPANY, INC.

#### Annual Meeting of Shareholders

#### May 14, 2025 10:00 A.M., Eastern Time

#### This proxy is solicited by the Board of Directors
**The undersigned shareholder of AMERICAN WATER WORKS COMPANY, INC., a Delaware corporation (the “Company”), hereby appoints Karl F. Kurz and M. Susan Hardwick, and each of them individually, attorneys and proxies for the undersigned, each with the power to appoint his or her