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

Company: American Water Works Company, Inc.
Filing Date: 2025-02-27
Form: S-3ASR
Chunk 3
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 Please read this Prospectus carefully before enrolling in the Plan. Unless the context otherwise indicates, references to “us,” “our” and “American Water” mean American Water Works Company, Inc., without its subsidiaries.

#### Enrollment
. To enroll in the Plan, you must be a registered owner of American Water common stock, or you must become a registered owner by buying a minimum of $100.00 of American Water common stock through the Plan when you enroll.

#### Your Plan Account
. When you enroll in the Plan, an account will be opened in your name. The shares of American Water common stock you enroll into the Plan through purchase or transfer will be registered in the name of Equiniti Trust Company, LLC, American Water’s transfer agent and the Plan administrator (“Equiniti”), or its nominee, as custodian, and will be credited to your Plan account.

#### Dividend Reinvestment
. You may choose to purchase shares by reinvesting all or a portion (at least 10 percent) of the dividends paid on shares held in your Plan account, or to receive all dividends in cash. Shares purchased through dividend reinvestment will be added to your Plan account. There is no transaction fee to Plan participants for dividend reinvestment.

#### Additional Purchases
. You may make additional purchases of American Water common stock by mail through the Plan, as often as weekly. You also may make automatic monthly purchases of American Water common stock by means of electronic funds transfer from your bank checking or savings account. In addition, you may make optional cash purchases online as a one-time event or recurring event using electronic funds transfer from a bank account. Regardless of the method of purchase you use, each purchase you make must be for a minimum of $25.00, and all purchases may not exceed $200,000.00 in any calendar year. There is no transaction fee to Plan participants for additional purchases.

#### Selling Shares in Your Account
. You may sell some or all of the shares held in your account. Sales may be executed as often as daily but will be executed at least weekly. A transaction fee of $18.00 plus $0.15 per share sold will be deducted from the sale proceeds, in addition to any applicable transfer taxes.

#### Contact Information
. Equiniti acts as agent for participants in the Plan and administers the Plan for us. You may contact Equiniti in the following ways:

| Telephone: |     | 1-888-556-0423                 |
| Mail: