American Water Works Company, Inc., through its subsidiaries, provides water and wastewater services in the United States. It offers water and wastewater services to approximately 1,700 communities in 14 states serving approximately 3.4 million active customers. The company serves residential customers; commercial customers, including food and beverage providers, commercial property developers and proprietors, and energy suppliers; fire service and private fire customers; industrial customers, such as large-scale manufacturers, mining, and production operations; public authorities comprising government buildings and other public sector facilities, such as schools and universities; and other utilities and community water and wastewater systems. It also provides water and wastewater services on various military installations; and undertakes contracts with municipal customers, primarily to operate and manage water and wastewater facilities, as well as offers other related services. In addition, the company operates approximately 80 surface water treatment plants; 480 groundwater treatment plants; 160 wastewater treatment plants; 52,500 miles of transmission, distribution, and collection mains and pipes; 1,100 groundwater wells; 1,700 water and wastewater pumping stations; 1,300 treated water storage facilities; and 76 dams. It serves approximately 14 million people with drinking water, wastewater, and other related services in 24 states. American Water Works Company, Inc. was founded in 1886 and is headquartered in Camden, New Jersey.

American Water Works Company, Inc.

Initial Statement of Beneficial Ownership

Insider	Title	Transaction Type	Shares Traded	% of Shares Traded	% Chg. in Shares	End of Filing Shares	Price	Transaction Value	Filing Date	Transaction Date
Lori Sutton	Executive VP & Chief Human Resources Officer Show All	Other Acquisition (Other Acquisition)	90.0	—	8.0%	1.2K	—	—	02 Oct 2025	01 Oct 2025 - 01 Oct 2025
Lisa A. Grow	Independent Director Show All	Other Acquisition (Other Acquisition)	868.0	0.000444%	—	868.0	—	—	27 Aug 2025	26 Aug 2025 - 26 Aug 2025
Raffiq A. Nathoo	Independent Director Show All	Other Acquisition (Other Acquisition)	1.2K	0.000595%	—	1.2K	—	—	10 Jun 2025	09 Jun 2025 - 09 Jun 2025
Melissa K. Wikle	Senior VP & Chief Accounting Officer Show All	Open Market Disposition (Open Market Disposition)	-2.8K	-0.001448%	-32.0%	6.0K	143.3 - 143.3	-404.8K	02 Jun 2025	30 May 2025 - 30 May 2025
John C. Griffith	CEO, President & Director Show All	Other Acquisition (Other Acquisition)	1.6K	—	13.2%	14.1K	—	—	15 May 2025	14 May 2025 - 14 May 2025
Stuart M. McGuigan
Michael L. Marberry
Karl Frederick Kurz
Patricia Leonard Kampling
Julia L. Johnson
Laurie P. Havanec
Jeffrey Neil Edwards
Lori Sutton
Lori Sutton
Lori Sutton
Melissa K. Wikle
Melissa K. Wikle
Melissa K. Wikle
Cheryl D. Norton
Cheryl D. Norton
Stacy A. Mitchell
Stacy A. Mitchell
Stacy A. Mitchell
Melanie M. Kennedy
Melanie M. Kennedy
M. Susan Hardwick
M. Susan Hardwick
M. Susan Hardwick
John C. Griffith
John C. Griffith