Company: AWK
Filing Date: 2025-12-17
Form Type: S-4
Source: 0001193125-25-321389
Chunk: 18

Company: American Water Works Company, Inc.
Filing Date: 2025-12-17
Form: S-4
Chunk 18
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 common stock after the American Water record date but before the date of the American Water special meeting, you will retain the right to vote at the American Water special meeting. |

| Q: | How do I submit a proxy or vote my shares at the American Water special meeting? |

| A: | How you vote your shares at the American Water special meeting depends on how you hold your shares. If you hold                                                                                                                                  
 shares of American Water common stock directly in your name with Equiniti Trust Company, LLC, American Water’s transfer agent and registrar with respect to the American Water common stock, including through American Water Stock Direct,      
 American Water’s dividend reinvestment and direct stock purchase plan, you are a holder of record. If you hold your shares of American Water common stock through a brokerage firm, trustee, bank, or other record holder, nominee, or financial 
 intermediary, each of which is referred to as an intermediary, you hold your shares in “street name.”                                                                                                                                            |

Holders of Record If you are a holder of record (including with respect to shares held through American Water Stock Direct), you may submit your proxy by mailing the enclosed proxy card, by telephone, or via the Internet, or you may vote virtually at the American Water special meeting by attending the live webcast at www.virtualshareholdermeeting.com/AWK2026SM. If you hold your shares in more than one account, please be sure to submit a proxy for each proxy card you receive. Holders of record may vote by mail by completing, signing, and dating your enclosed proxy card and returning it in the accompanying pre-addressedenvelope no later than the close of business on [ ], 2026 in order for your vote to be counted at the American Water special meeting. Holders of record may submit their proxy by telephone by calling toll-free at (800) 690-6903.Holders of record may also submit their proxy via the Internet (see proxy card for instructions). In order for holders of record to vote their shares by telephone or via the Internet, such holders will need the 16-digitcontrol number included on the enclosed proxy card (which is unique to each American Water shareholder of record to ensure all voting instructions are genuine and to prevent duplicate voting). If holders of record choose to submit their proxy by telephone or via the Internet, the proxy must be received by 11:59 p.m. Eastern time on [ ], 2026 in order to be counted at the American Water special meeting. To vote during the live webcast, follow