Company: AWK
Filing Date: 2025-10-27
Form Type: 425
Source: 0001193125-25-250649
Chunk: 9

Company: American Water Works Company, Inc.
Filing Date: 2025-10-27
Form: 425
Chunk 9
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 of new information, future events, changed circumstances or otherwise, except as otherwise required by the federal securities laws. New factors emerge from time to
time, and it is not possible for American Water or Essential to predict all such factors. Furthermore, it may not be possible to assess the impact of any such factor on American Water’s or Essential’s businesses, viewed independently or
together, or the extent to which any factor, or combination of factors, may cause results to differ materially from those contained in any forward-looking statement.

Important Additional Information about the Proposed Merger and Where to Find It

In connection with the proposed merger, American Water will file a registration statement on
Form S-4, which will include a document that serves as a prospectus of American Water with respect to the shares of American Water’s common stock to be issued in the proposed merger and a joint
proxy statement of American Water and Essential for their respective shareholders (the “joint proxy statement/prospectus”), and each party will file other documents regarding the proposed merger

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with the SEC. This communication is not a substitute for the registration statement, the joint proxy statement/prospectus or any other document that American Water or Essential may file with
the SEC or mail to their respective shareholders in connection with the proposed merger. BEFORE MAKING ANY VOTING OR INVESTMENT DECISION, INVESTORS AND SECURITY HOLDERS OF EACH PARTY ARE URGED TO READ CAREFULLY AND IN THEIR ENTIRETY THE REGISTRATION STATEMENT, THE JOINT PROXY STATEMENT/PROSPECTUS, ANY AMENDMENTS OR SUPPLEMENTS THERETO AND OTHER RELEVANT DOCUMENTS FILED WITH THE SEC OR INCORPORATED BY REFERENCE INTO THE REGISTRATION STATEMENT AND JOINT PROXY STATEMENT/PROSPECTUS WHEN THEY BECOME AVAILABLE, BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION. A definitive joint proxy statement/prospectus will be sent to American Water’s and Essential’s shareholders. Investors and security holders will be able to
obtain the registration statement, the joint proxy statement/prospectus and the other documents filed regarding the proposed merger free of charge from the SEC’s website or from American Water or Essential. The documents filed
by American Water with the SEC may be obtained free of charge at American Water’s investor relations website at ir.amwater.com or at the SEC’s website at www.sec.gov. The documents filed by Essential with
the SEC may be obtained free of charge at Essential’s website at essential.co or