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Mereo BioPharma Group plc

For the period ended Sep 30, 2025. Filed Nov 10, 2025.

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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, 2025 · Filed Nov 10, 2025

MREO$0.30+4.3%Stored close · as of Nov 9, 2026

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Item 4. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

Our management, with the participation of our Chief Executive Officer and Chief Financial Officer, has evaluated the effectiveness of our disclosure controls and procedures (as defined in Rules 13a 15(e) and 15d 15(e)) under the Securities and Exchange Act of 1934, as amended (“Exchange Act”)) as of September 30, 2025.

Based on such evaluation, our Chief Executive Officer and Chief Financial Officer have concluded that our disclosure controls and procedures were effective at September 30, 2025.

Changes in Internal Control over Financial Reporting.

No changes in our internal control over financial reporting (as defined in Rules 13a-15(e) and 15d – 15(e) under the Exchange Act) occurred during the three months ended September 30, 2025 that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting.

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