Company: AWK
Filing Date: 2025-12-29
Form Type: S-4/A
Source: 0001193125-25-332292
Chunk: 84

Company: American Water Works Company, Inc.
Filing Date: 2025-12-29
Form: S-4/A
Chunk 84
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16-digitcontrol number. Online access to the Essential special meeting will open approximately 15 minutes prior to the start of the meeting to permit you time to
access and log into the virtual meeting platform. Your ability to be admitted to the meeting is also subject to potential capacity limits set by the virtual meeting platform provider.

Members of the public, including shareholders who do not have their 16-digit control number, will be able to
access the meeting as a guest in listen-only mode by visitingwww.virtualshareholdermeeting.com/WTRG2026SM. Shareholders and other persons without a 16-digit control number will not be
able to otherwise participate in, vote at, or submit appropriate questions at, the meeting.

No recording or rebroadcasting of the special meeting by
participants will be permitted.

Voting by Proxy

How you vote your shares at the Essential special meeting depends on how you hold your shares. If you hold shares of Essential common stock directly in your
name with Computershare Trust Company, N.A., Essential’s transfer agent, including shares held through Essential’s dividend reinvestment and direct stock purchase plan, you are a holder of record. If you hold your shares of Essential
common stock through an intermediary, you hold your shares in “street name.”

If you received more than one proxy card and/or voting
instruction form, your shares of Essential common stock are likely registered in different names or with different addresses or are in more than one account. You must separately follow the applicable voting procedures for each proxy card and voting
instruction form that you receive in order for all of your shares to be voted at the Essential special meeting.

Holders of Record

If you are a holder of record of your shares of Essential common stock (including shares held through Essential’s dividend reinvestment and direct stock
purchase plan), you may submit your proxy by mailing the enclosed

54

proxy card, by telephone, or via the Internet, and may vote virtually at the Essential special meeting by attending the live webcast at www.virtualshareholdermeeting.com/WTRG2026SM. 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-addressed envelope for receipt no later than the close of business on February 9, 2026 in order for your vote
to be counted at the Essential special meeting.

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