Company: AWK
Filing Date: 2025-12-29
Form Type: S-4/A
Source: 0001193125-25-332292
Chunk: 18

Company: American Water Works Company, Inc.
Filing Date: 2025-12-29
Form: S-4/A
Chunk 18
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 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 for receipt no later than the close of business on February 9, 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 February 9, 2026 in order to be counted at the American Water special meeting. To vote during the live webcast, follow the instructions available on the American Water special meeting website at www.virtualshareholdermeeting.com/AWK2026SM. The American Water special meeting will be held exclusively online via live webcast. To be admitted to the live webcast, holders of record must provide their 16-digitcontrol number. It is recommended that holders of record submit their vote by proxy prior to the date of the American Water special meeting even if they plan to attend the meeting virtually via the Internet. Beneficial Holders (in “Street Name”) If you hold shares of American Water common stock through an intermediary, which is known as holding shares in “street name,” you will receive a voting instruction form from that intermediary. The form will explain how to direct the voting of your shares through the intermediary, which may include the ability to provide voting instructions via the Internet or by telephone.