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Avantor, Inc.

For the period ended Sep 30, 2026. Filed Oct 28, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Oct 28, 2026

AVTR$15.47+2.2%Stored close · as of Nov 6, 2026

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Item 4. Controls and procedures

Management’s evaluation of disclosure controls and procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, evaluated the effectiveness of our disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)), as of the end of the period covered by this report. Based upon that evaluation, our Chief Executive Officer and Chief Financial Officer concluded that, as of September 30, 2026, the design and operation of our disclosure controls and procedures were effective to accomplish their objectives at the reasonable assurance level.

Changes in internal control over financial reporting

There have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934) during the fiscal quarter ended September 30, 2026, that have materially affected or are reasonably likely to materially affect our internal control over financial reporting.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.