AWK

SEC source: 0001410636-26-000086 · wk-form4_1778714650.xml · nonDerivative · entry 1

Nathoo Raffiq · CIK 0001927730 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,536

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000080 · wk-form4_1778714534.xml · nonDerivative · entry 1

Havanec Laurie P. · CIK 0001807757 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,369

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000085 · wk-form4_1778714639.xml · nonDerivative · entry 1

MCGUIGAN STUART M · CIK 0001335234 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,340

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000084 · wk-form4_1778714625.xml · nonDerivative · entry 1

Marberry Michael · CIK 0001557769 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,395

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000083 · wk-form4_1778714613.xml · nonDerivative · entry 1

Kurz Karl F · CIK 0001292794 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,758

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000082 · wk-form4_1778714595.xml · nonDerivative · entry 1

KAMPLING PATRICIA L · CIK 0001337315 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,028

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000081 · wk-form4_1778714551.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,052

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000079 · wk-form4_1778714520.xml · nonDerivative · entry 1

Grow Lisa A · CIK 0001333758 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,242

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-26-000078 · wk-form4_1778714507.xml · nonDerivative · entry 1

Edwards Jeffrey N · CIK 0001293146 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,826

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

F2 · balance_after: Includes 239 shares acquired pursuant to the automatic reinvestment in shares of Company common stock of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisition is exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-26-000037 · wk-form4_1771454453.xml · nonDerivative · entry 3

Bowler David · CIK 0002032352 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,598

SEC source: 0001410636-26-000037 · wk-form4_1771454453.xml · nonDerivative · entry 2

Bowler David · CIK 0002032352 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,291

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000037 · wk-form4_1771454453.xml · nonDerivative · entry 1

Bowler David · CIK 0002032352 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,659

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. This award will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000043 · wk-form4_1771455151.xml · nonDerivative · entry 3

Mitchell Stacy A. · CIK 0002026766 · EVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,203

SEC source: 0001410636-26-000043 · wk-form4_1771455151.xml · nonDerivative · entry 2

Mitchell Stacy A. · CIK 0002026766 · EVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,727

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000043 · wk-form4_1771455151.xml · nonDerivative · entry 1

Mitchell Stacy A. · CIK 0002026766 · EVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,667

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000042 · wk-form4_1771455125.xml · nonDerivative · entry 3

Griffith John C. · CIK 0001927369 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,686

SEC source: 0001410636-26-000042 · wk-form4_1771455125.xml · nonDerivative · entry 2

Griffith John C. · CIK 0001927369 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,787

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000042 · wk-form4_1771455125.xml · nonDerivative · entry 1

Griffith John C. · CIK 0001927369 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,465

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000046 · wk-form4_1771455992.xml · nonDerivative · entry 3

Norton Cheryl · CIK 0001805481 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,741

SEC source: 0001410636-26-000046 · wk-form4_1771455992.xml · nonDerivative · entry 2

Norton Cheryl · CIK 0001805481 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,651

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000046 · wk-form4_1771455992.xml · nonDerivative · entry 1

Norton Cheryl · CIK 0001805481 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,750

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000049 · wk-form4_1771456636.xml · nonDerivative · entry 3

Wikle Melissa K. · CIK 0001680773 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,383

SEC source: 0001410636-26-000049 · wk-form4_1771456636.xml · nonDerivative · entry 2

Wikle Melissa K. · CIK 0001680773 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,926

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000049 · wk-form4_1771456636.xml · nonDerivative · entry 1

Wikle Melissa K. · CIK 0001680773 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,862

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000047 · wk-form4_1771456169.xml · nonDerivative · entry 1

Sutton Lori · CIK 0002062690 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,721

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000039 · wk-form4_1771454642.xml · nonDerivative · entry 3

Duffy Maureen · CIK 0001531235 · EVP, Comms & External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 28,906

SEC source: 0001410636-26-000039 · wk-form4_1771454642.xml · nonDerivative · entry 2

Duffy Maureen · CIK 0001531235 · EVP, Comms & External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,838

F2 · shares: Represents shares vested pursuant to one or more awards of performance stock units (PSUs) granted in February 2023 under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards vested on February 17, 2026. PSUs are settled solely by the delivery of one share of common stock per PSU (and may not be settled in cash).

SEC source: 0001410636-26-000039 · wk-form4_1771454642.xml · nonDerivative · entry 1

Duffy Maureen · CIK 0001531235 · EVP, Comms & External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,824

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted on February 17, 2026, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. This award will vest in three approximately equal increments on January 31, 2027, 2028 and 2029, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-26-000009 · wk-form4_1770079072.xml · nonDerivative · entry 1

Bowler David · CIK 0002032352 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,948

SEC source: 0001410636-26-000013 · wk-form4_1770082109.xml · nonDerivative · entry 1

Mitchell Stacy A. · CIK 0002026766 · EVP and General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,117

F1 · balance_after: Includes approximately 80 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-26-000011 · wk-form4_1770081563.xml · nonDerivative · entry 1

Griffith John C. · CIK 0001927369 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,736

F1 · balance_after: Includes approximately 162 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-26-000015 · wk-form4_1770082694.xml · nonDerivative · entry 1

Norton Cheryl · CIK 0001805481 · EVP and COO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 21,492

F1 · balance_after: Includes approximately 346 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-26-000017 · wk-form4_1770083168.xml · nonDerivative · entry 1

Sutton Lori · CIK 0002062690 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,357

SEC source: 0001410636-26-000019 · wk-form4_1770083767.xml · nonDerivative · entry 1

Wikle Melissa K. · CIK 0001680773 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,254

SEC source: 0001531235-26-000002 · wk-form4_1770080286.xml · nonDerivative · entry 1

Duffy Maureen · CIK 0001531235 · EVP, Comms & External Affairs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,523

F1 · balance_after: Includes 560 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-25-000170 · wk-form4_1759422099.xml · nonDerivative · entry 1

Sutton Lori · CIK 0002062690 · EVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,556

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted effective October 1, 2025, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. These awards will vest in three approximately equal increments on January 31, 2026, 2027 and 2028, subject to continued employment on each vesting date. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-25-000168 · wk-form4_1756329043.xml · nonDerivative · entry 1

Grow Lisa A · CIK 0001333758 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 868

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000140 · wk-form4a_1749581914.xml · nonDerivative · entry 1

Nathoo Raffiq · CIK 0001927730 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,162

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

F2 · shares: This form is being filed to timely correct the Form 4 filed on June 10, 2025 on behalf of the reporting person, which originally reported this transaction as 1,160 shares.

SEC source: 0001410636-25-000138 · wk-form4_1749567189.xml · nonDerivative · entry 1

Nathoo Raffiq · CIK 0001927730 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,160

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000121 · wk-form4_1748900366.xml · nonDerivative · entry 1

Wikle Melissa K. · CIK 0001680773 · SVP, Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,572

F1 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $143.13 to $143.33, inclusive. The reporting person undertakes to provide to any security holder of American Water Works Company, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth above.

SEC source: 0001410636-25-000113 · wk-form4_1747345027.xml · nonDerivative · entry 1

Griffith John C. · CIK 0001927369 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,800

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted effective May 14, 2025, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. This award will vest in three approximately equal increments on January 31, 2026, 2027 and 2028, subject to continued employment on each vesting date and applicable continued vesting provisions in the event of retirement under specified circumstances. RSUs are settled solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

F2 · shares: Includes an aggregate of 93 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, including 26 of such shares that were purchased since the reporting person's last Form 4 and 67 of such shares that were inadvertently omitted from certain of the reporting person's prior Form 4s, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-25-000099 · wk-form4_1747332442.xml · nonDerivative · entry 1

Havanec Laurie P. · CIK 0001807757 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,995

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000111 · wk-form4_1747341329.xml · nonDerivative · entry 1

MCGUIGAN STUART M · CIK 0001335234 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,966

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000110 · wk-form4_1747340979.xml · nonDerivative · entry 1

Marberry Michael · CIK 0001557769 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,021

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000105 · wk-form4_1747337224.xml · nonDerivative · entry 1

Kurz Karl F · CIK 0001292794 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,599

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000103 · wk-form4_1747333134.xml · nonDerivative · entry 1

KAMPLING PATRICIA L · CIK 0001337315 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,654

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000101 · wk-form4_1747332740.xml · nonDerivative · entry 1

JOHNSON JULIA L · CIK 0001221442 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 30,678

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

SEC source: 0001410636-25-000097 · wk-form4_1747332145.xml · nonDerivative · entry 1

Edwards Jeffrey N · CIK 0001293146 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,213

F1 · shares: The shares indicated constitute units that settle solely in the common stock of American Water Works Company, Inc. (the "Company") on a one-share-per-unit basis. The stock units vested on the date of grant and will be converted immediately into shares of Company common stock.

F2 · shares: Includes 178 shares acquired pursuant to the automatic reinvestment in shares of common stock of American Water Works Company, Inc. (the "Company") of cash dividends paid on Company common stock to the reporting person, received since the reporting person's last Form 4 report, which acquisitions are exempt from Section 16 of the Securities Exchange Act of 1934, as amended, pursuant to Rule 16a-11 thereunder.

SEC source: 0001410636-25-000076 · wk-form4_1743599727.xml · nonDerivative · entry 1

Sutton Lori · CIK 0002062690 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,466

F1 · shares: Represents shares underlying an award of restricted stock units (RSUs) granted effective April 1, 2025, under the American Water Works Company, Inc. 2017 Omnibus Equity Compensation Plan. This award will vest in three approximately equal increments on January 31, 2026, 2027 and 2028, subject to continued employment on each vesting date. RSUs are settled at vesting solely by the delivery of one share of common stock per RSU (and may not be settled in cash).

SEC source: 0001410636-25-000025 · wk-form4_1740091655.xml · nonDerivative · entry 3

Bowler David · CIK 0002032352 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,739