Company: AWK
Filing Date: 2025-12-29
Form Type: S-4/A
Source: 0001193125-25-332292
Chunk: 32

Company: American Water Works Company, Inc.
Filing Date: 2025-12-29
Form: S-4/A
Chunk 32
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 your proxy, or if you need additional copies of this joint proxy statement/prospectus, the |

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| enclosed proxy card, or voting instructions, you should contact American Water’s and Essential’s respective proxy solicitors, as follows: |

| For American Water Shareholders:                   |     | For Essential 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                              |     | 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                                      |

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SUMMARY

This summary highlights selected information contained in this joint proxy statement/prospectus and does not contain all the information that may be important
to you. American Water and Essential urge you to read carefully this joint proxy statement/prospectus in its entirety, including the annexes. Additional, important information, which American Water and Essential also urge you to read, is contained
in the documents incorporated by reference into this joint proxy statement/prospectus. See “Where You Can Find More Information” beginning on page 183.

Risk Factors

You should also
carefully consider the risks that are described in “Risk Factors” beginning on page 35 and the risks included in American Water’s and Essential’s SEC filings that are incorporated by reference into this joint
proxy statement/prospectus.

Information About the Parties to the Transaction

American Water

American Water is the largest and
most geographically diverse, publicly traded water and wastewater utility company in the United States, as measured by both operating revenues and population served. As a holding company, American Water conducts substantially all of its business
through its subsidiaries. American Water employs approximately 6,700 professionals who provide drinking water, wastewater, and other related services to over 14 million people in 24 states. American Water conducts the majority of its business
through one reportable segment that is commonly referred to as the Regulated Businesses, which includes utilities that are regulated by public utilities commissions and that provide water and wastewater services to residential, commercial,
industrial