Company: AWK
Filing Date: 2025-02-27
Form Type: S-3ASR
Source: 0001410636-25-000050
Chunk: 19

Company: American Water Works Company, Inc.
Filing Date: 2025-02-27
Form: S-3ASR
Chunk 19
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 31, 202 4 , filed with the SEC on February 19, 2025 (File No. 001-34028);

• American Water’s Current Reports on Form 8-K, filed with the SEC on February 24, 2025 and February 27, 202 5 (File No. 001-34028); and

• The description of American Water’s common stock set forth in Amendment No. 1 to American Water’s Registration Statement on Form 8-A/A , filed with the SEC on May 1, 2018 (File No. 001-34028), including any amendments or reports filed to update such description (including Exhibit 4. 25 to A merican Water’s Annual Report on Form 10-K for the fiscal year ended December 31, 2024, filed with the SEC on February 19, 2025).

You may request a copy of these documents at no cost to you by writing to American Water at the following address or by calling the number set forth below:

<div align='center'>American Water Works Company, Inc.

1 Water Street

Camden, NJ 08102-1658

Attention: Secretary

contacttheboard@amwater.com

Phone: (856) 955-4001</div>

If you request, orally or in writing, copies of any of the documents incorporated by reference, American Water will send you the copies you requested at no charge. However, American Water will not send exhibits to such documents, unless such exhibits are specifically incorporated by reference in such documents.

Any statement contained herein or in a document which is or is deemed to be incorporated by reference herein will be deemed to be modified or superseded for purposes of this Prospectus to the extent that a statement contained herein or in any subsequently filed document which also is or is deemed to be incorporated by reference herein modifies or supersedes such statement. Any statement so modified or superseded will not be deemed, except as so modified or superseded, to constitute a part of this Prospectus.

### LEGAL MATTERS
Jeffrey M. Taylor, American Water’s Vice President, Chief SEC Counsel and Secretary, has provided an opinion regarding the validity of the American Water common stock offered by this Prospectus. As of February 25, 2025, Mr. Taylor owned 1,953 shares of American Water’s common stock, 2,797 unvested performance stock units (at target) and 847 unvested restricted stock units