Ecolab will host a live webcast of its annual meeting of stockholders. As indicated in our proxy statement, the 2026 Annual Meeting of Stockholders will be a virtual-only meeting.

Details for the public webcast are as follows:

To be admitted to the Annual Meeting at www.virtualshareholdermeeting.com/ECL2026, and to participate and ask questions during the meeting, a stockholder must enter the 16-digit control number found on the proxy card, voting instruction form or notice of internet availability previously mailed or made available to stockholders.

Stockholders and other interested parties may also register as guests in listen only mode without the 16-digit control number.

Online access to the audio webcast will open 15 minutes prior to the start of the 2026 Annual Meeting.

About Ecolab

A trusted partner for millions of customers, Ecolab (NYSE: ECL) is a global leader in water, hygiene and infection prevention solutions and services that protect people and the resources vital to life. For more than a century, Ecolab has advanced innovation by integrating science-based solutions, data driven insights, AI technology and world-class service. This unique combination enables Ecolab to partner with customers to define what best-in-class looks like and scale it across their operations, helping them achieve peak performance. Today, Ecolab delivers $16 billion in annual sales, employs 48,000 associates and serves customers in more than 170 countries and 40 industries. The company helps protect one-third of the world’s food production and a quarter of the power generated while delivering innovative solutions across food, hospitality, healthcare, data centers, microelectronics and life sciences. As the world’s water company, Ecolab plays an important role in AI growth by supporting the full water needs of advanced computing—from ultra pure water for chip manufacturing, to water solutions that support the power behind AI, to direct liquid cooling systems for high density computing that improves performance while reducing environmental impact through circular water use. In life sciences, Ecolab delivers end to end solutions that support the development and manufacturing of life-saving drugs, helping customers operate safely and consistently at scale while improving performance and reducing environmental impact. Through its comprehensive approach, Ecolab 8 protects what’s vital, with a goal by 2030 to help protect 2 billion people from infections and conserve enough drinking water for 1 billion people, while continuing to enhance business performance.

Ecolab. Protecting What’s Vital.

www.ecolab.com

(ECL-C)

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