Company: AWK
Filing Date: 2025-12-29
Form Type: S-4/A
Source: 0001193125-25-332292
Chunk: 11

Company: American Water Works Company, Inc.
Filing Date: 2025-12-29
Form: S-4/A
Chunk 11
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By Order of
the Board of Directors of

Essential Utilities, Inc.

Kimberly A. Joyce

Secretary

Bryn Mawr, Pennsylvania

[ ], 202[ ]

REFERENCES TO ADDITIONAL INFORMATION This joint proxy statement/prospectus incorporates by reference important business and financial information about American Water and Essential from other documents that are not included in or delivered with this joint proxy statement/prospectus. For a listing of the documents incorporated by reference into this joint proxy statement/prospectus and additional information, see “ Where You Can Find More Information” beginning on page 183. You can obtain any of the documents incorporated by reference into this joint proxy statement/prospectus without charge by requesting them in writing or by telephone from D.F. King & Co, Inc., American Water’s proxy solicitor, or MacKenzie Partners, Inc., Essential’s proxy solicitor, at the following addresses and telephone numbers:

| For American Water Shareholders:                                                                        
 D.F. King & Co, Inc.                                                                                    
 28 Liberty Street, 53rd Floor                                                                           
 New York, New York 10005                                                                                
 Shareholders may                                                                                        
 call toll free: (888) 869-7406 Banks and Brokers may call collect: (646) 582-2898 Email: AWK@dfking.com |     | For Essential Shareholders:                                                           
 MacKenzie Partners, Inc.                                                              
 7 Penn Plaza New York, New York                                                       
 10001 Shareholders may call toll free: (800) 322-2885                                 
 Banks and Brokers may call collect: (212) 929-5500 Email: proxy@MacKenziePartners.com |

You will not be charged for any of these documents that you request. To receive timely delivery of any of these documents in advance of the special meetings, you should make your request no later than February 3, 2026, which is five business days before the special meetings. You may also obtain any of the documents incorporated by reference into this joint proxy statement/prospectus without charge through the U.S. Securities and Exchange Commission, which is referred to as the SEC, website at www.sec.gov. In addition, you may obtain copies of documents filed by American Water with the SEC by accessing American Water’s website at ir.amwater.com. You may also obtain copies of documents filed by Essential with the SEC by accessing Essential’s website at essential.co. We are not incorporating the contents of or any information linked in the websites of