Wellington Management Group LLP and affiliated entities report a significant institutional stake in American Water Works Company, Inc. They collectively report beneficial ownership of 14,911,972 shares of common stock, representing 7.64% of the class as of June 30, 2026.
Across the reporting entities, there is shared voting power over 14,761,889 shares and shared dispositive power over 14,911,963 shares, with no sole voting or dispositive power. The shares are held of record by clients of various Wellington investment advisers, which are controlled through a holding-company structure headed by Wellington Management Group LLP. The clients retain the economic rights to dividends and sale proceeds, and no individual client is known to hold more than five percent of this class.
Positive
None.
Negative
None.
Key Figures
Beneficial ownership:14,911,972 sharesPercent of class:7.64%Shared voting power:14,761,889 shares+2 more
5 metrics
Beneficial ownership14,911,972 sharesShares of American Water Works common stock reported as beneficially owned
Percent of class7.64%Portion of American Water Works common stock class beneficially owned
Shared voting power14,761,889 sharesShares over which Wellington entities share voting power
Shared dispositive power14,911,963 sharesShares over which Wellington entities share dispositive power
Event date06/30/2026Date tied to the reported beneficial ownership information
"Amount beneficially owned: See the responses to Item 9 on the attached cover pages."
Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.
shared voting powerfinancial
"Shared Voting Power 14,761,889.00"
Shared voting power occurs when two or more parties jointly have the right to vote or decide how a block of company shares is cast, like co-owners who must agree before moving a piece of furniture. Investors care because who controls voting rights affects board elections, major corporate decisions and takeover outcomes, and shared control can alter regulatory disclosures and the practical influence any holder has over a company’s direction and value.
shared dispositive powerfinancial
"Shared Dispositive Power 14,911,963.00"
parent holding companyfinancial
"The securities as to which this Schedule is filed by Wellington Management Group LLP, as parent holding company"
investment advisersfinancial
"One or more of the following investment advisers (the "Wellington Investment Advisers"): Wellington Management Company LLP"
FAQ
What stake does Wellington hold in American Water Works (AWK)?
Wellington and its affiliates report beneficial ownership of 14,911,972 AWK shares, representing 7.64% of the common stock class. These shares are held for clients of Wellington’s investment adviser entities.
How much voting power does Wellington report in AWK shares?
Wellington reports shared voting power over 14,761,889 American Water Works shares and no sole voting power. Voting authority is exercised on behalf of advisory clients that own the shares of record.
Who is the reporting person on this Schedule 13G/A for AWK?
The filing lists Wellington Management Group LLP, Wellington Group Holdings LLP, Wellington Investment Advisors Holdings LLP, and Wellington Management Company LLP as reporting persons, reflecting Wellington’s holding-company and investment-adviser structure.
Do Wellington’s clients individually own more than 5% of AWK?
No. The filing states that no client is known to have rights over more than five percent of American Water Works’ common stock, even though Wellington’s entities collectively report 7.64% beneficial ownership.
Does Wellington have sole dispositive power over AWK shares?
No. The Schedule 13G/A reports 0 shares with sole dispositive power and 14,911,963 shares with shared dispositive power, reflecting Wellington’s role managing assets for multiple advisory clients.
What class of American Water Works securities is covered in this filing for AWK?
The filing covers Common Stock of American Water Works Company, Inc., identified by CUSIP 030420103, and reports Wellington’s beneficial ownership and related voting and dispositive powers in that class.
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 13G
UNDER THE SECURITIES EXCHANGE ACT OF 1934
(Amendment No. 1)
American Water Works Company, Inc.
(Name of Issuer)
Common Stock
(Title of Class of Securities)
030420103
(CUSIP Number)
06/30/2026
(Date of Event Which Requires Filing of this Statement)
Check the appropriate box to designate the rule pursuant to which this Schedule is filed:
Rule 13d-1(b)
Rule 13d-1(c)
Rule 13d-1(d)
schemaVersion:
SCHEDULE 13G
CUSIP Number(s):
030420103
1
Names of Reporting Persons
Wellington Management Group LLP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
MASSACHUSETTS
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
14,761,889.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
14,911,963.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
14,911,972.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.6 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
030420103
1
Names of Reporting Persons
Wellington Group Holdings LLP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
14,761,889.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
14,911,963.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
14,911,972.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.6 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
030420103
1
Names of Reporting Persons
Wellington Investment Advisors Holdings LLP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
14,761,889.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
14,911,963.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
14,911,972.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.6 %
12
Type of Reporting Person (See Instructions)
HC
SCHEDULE 13G
CUSIP Number(s):
030420103
1
Names of Reporting Persons
Wellington Management Company LLP
2
Check the appropriate box if a member of a Group (see instructions)
(a)
(b)
3
Sec Use Only
4
Citizenship or Place of Organization
DELAWARE
Number of Shares Beneficially Owned by Each Reporting Person With:
5
Sole Voting Power
0.00
6
Shared Voting Power
14,544,702.00
7
Sole Dispositive Power
0.00
8
Shared Dispositive Power
14,605,035.00
9
Aggregate Amount Beneficially Owned by Each Reporting Person
14,911,972.00
10
Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)
11
Percent of class represented by amount in row (9)
7.5 %
12
Type of Reporting Person (See Instructions)
IA
SCHEDULE 13G
Item 1.
(a)
Name of issuer:
American Water Works Company, Inc.
(b)
Address of issuer's principal executive offices:
1 Water Street, Camden NJ 08102-1658
Item 2.
(a)
Name of person filing:
Wellington Management Group LLP
Wellington Group Holdings LLP
Wellington Investment Advisors Holdings LLP
Wellington Management Company LLP
(b)
Address or principal business office or, if none, residence:
c/o Wellington Management Company LLP, 280 Congress Street, Boston MA 02210
(c)
Citizenship:
Wellington Management Group LLP - Massachusetts
Wellington Group Holdings LLP - Delaware
Wellington Investment Advisors Holdings LLP - Delaware
Wellington Management Company LLP - Delaware
(d)
Title of class of securities:
Common Stock
(e)
CUSIP No.:
030420103
Item 3.
If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)
Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)
Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)
Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)
Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)
An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)
An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)
A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)
A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)
A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)
A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J),
please specify the type of institution:
(k)
Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.
Ownership
(a)
Amount beneficially owned:
See the responses to Item 9 on the attached cover pages.
(b)
Percent of class:
7.64 %
(c)
Number of shares as to which the person has:
(i) Sole power to vote or to direct the vote:
0
(ii) Shared power to vote or to direct the vote:
See the responses to Item 6 on the attached cover pages.
(iii) Sole power to dispose or to direct the disposition of:
0
(iv) Shared power to dispose or to direct the disposition of:
See the responses to Item 8 on the attached cover pages.
Item 5.
Ownership of 5 Percent or Less of a Class.
Not Applicable
Item 6.
Ownership of more than 5 Percent on Behalf of Another Person.
If any other person is known to have the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, such securities, a statement to that effect should be included in response to this item and, if such interest relates to more than 5 percent of the class, such person should be identified. A listing of the shareholders of an investment company registered under the Investment Company Act of 1940 or the beneficiaries of employee benefit plan, pension fund or endowment fund is not required.
The securities as to which this Schedule is filed are owned of record by clients of one or more investment advisers identified in Item 7 directly or indirectly owned by Wellington Management Group LLP. Those clients have the right to receive, or the power to direct the receipt of, dividends from, or the proceeds from the sale of, such securities. No such client is known to have such right or power with respect to more than five percent of this class of securities, except as follows:
Not Applicable.
Item 7.
Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
If a parent holding company has filed this schedule, pursuant to Rule 13d-1(b)(ii)(G), so indicate under Item 3(g) and attach an exhibit stating the identity and the Item 3 classification of the relevant subsidiary. If a parent holding company has filed this schedule pursuant to Rule 13d-1(c) or Rule 13d-1(d), attach an exhibit stating the identification of the relevant subsidiary.
Pursuant to the instructions in Item 7 of Schedule 13G, the following lists the identity and Item 3 classification of each relevant entity that beneficially owns shares of the security class being reported on this Schedule 13G.
Wellington Group Holdings LLP - HC
Wellington Investment Advisors LLP - HC
Wellington Management Global Holdings, Ltd. - HC
One or more of the following investment advisers (the "Wellington Investment Advisers"):
Wellington Management Company LLP - IA
Wellington Management Canada LLC - IA
Wellington Management Singapore Pte Ltd - IA
Wellington Management Hong Kong Ltd - IA
Wellington Management International Ltd - IA
Wellington Management Japan Pte Ltd - IA
Wellington Management Australia Pty Ltd - IA
The securities as to which this Schedule is filed by Wellington Management Group LLP, as parent holding company of certain holding companies and the Wellington Investment Advisers, are owned of record by clients of the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP controls directly, or indirectly through Wellington Management Global Holdings, Ltd., the Wellington Investment Advisers. Wellington Investment Advisors Holdings LLP is owned by Wellington Group Holdings LLP. Wellington Group Holdings LLP is owned by Wellington Management Group LLP.
Item 8.
Identification and Classification of Members of the Group.
Not Applicable
Item 9.
Notice of Dissolution of Group.
Not Applicable
Item 10.
Certifications:
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.
SIGNATURE
After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.
