Company: AWK
Filing Date: 2025-12-17
Form Type: S-4
Source: 0001193125-25-321389
Chunk: 19

Company: American Water Works Company, Inc.
Filing Date: 2025-12-17
Form: S-4
Chunk 19
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 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. If your shares of American Water common stock are held in “street name” and you want to vote on the share issuance proposal or the American Water adjournment proposal, you MUST indicate how you wish your shares to be voted. The intermediary will vote shares held by you in “street name” in accordance with your 8

voting instructions, as indicated on your signed voting instruction form or by the instructions you provide via the Internet or by telephone. Absent such instructions, NYSE rules prohibit an intermediary from exercising discretion to cast a vote with respect to your shares. In that case, a proxy submitted by the intermediary with respect to your shares would indicate that the intermediary is unable to cast a vote with respect to the matter, which is commonly referred to as a “broker non-vote.” If you received more than one voting instruction form, your shares of American Water common stock are likely registered in different names or with different addresses or are in more than one account. You must separately follow the foregoing voting procedures for each voting instruction form that you receive in order for all of your shares to be voted at the meeting. If you hold shares of American Water common stock in “street name” and wish to vote your shares virtually at the meeting, you may vote online during the meeting as an authenticated shareholder by visiting www.virtualshareholdermeeting.com/AWK2026SM, entering your 16-digitcontrol number, and following the on-screeninstructions. The availability of online voting may depend on your intermediary’s specific voting procedures. Please contact your intermediary for information.

| Q: | If my shares of American Water common stock are held in “street name” by an intermediary, will 
 my intermediary vote my