"2024 is off to an exciting start following the completion of enrollment by our partner Ultragenyx in both the Orbit and Cosmic studies of setrusumab in Osteogenesis Imperfecta (OI) along with the continued advancement of the pre-launch activities in Mereo's European territories. These include further identification of patients who could potentially benefit from setrusumab treatment, the ongoing dialogues with the HTA's and Payors in Europe to support both rapid adoption and efficient reimbursement followin ...

LONDON, May 15, 2024 (GLOBE NEWSWIRE) -- Mereo BioPharma Group plc (NASDAQ:MREO) ("Mereo" or the "Company"), a clinical-stage biopharmaceutical company focused on rare diseases, today announced its financial results for the first quarter ended March 31, 2024, and provided an update on recent corporate highlights. The Company reported cash and cash equivalents of $48.7 million as of March 31, 2024 and continues to expect this to fund its operations into 2026. "2024 is off to an exciting start following the c ...

UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-K ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2023 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to Commission File Number 001-38452 MEREO BIOPHARMA GROUP PLC (Exact name of Registrant as specified in its charter) England and Wales Not Applicable (State or other jurisdic ...

Exhibit 99.1 Mereo BioPharma Reports Full Year 2023 Financial Results and Provides Corporate Update — Phase 2/3 Orbit Study and Phase 3 Cosmic Study of setrusumab in Osteogenesis Imperfecta expected to complete enrollment around the end of first quarter and in the first half of 2024, respectively Partnering discussions for alvelestat progressing with plans to initiate Phase 3 with a partner around the end of 2024 Cash of $57.4 million as of December 31, 2023 expected to fund operations into 2026 2023 Highli ...

Exhibit 99.1 MEREO BIOPHARMA GROUP PLC Condensed Consolidated Statements of Comprehensive Loss (unaudited) | | | Six months ended | Six months ended | | --- | --- | --- | --- | | | | June 30, | June 30, | | | | 2023 | 2022 | | | Notes | £'000 | £'000 | | Revenue | 3 | 7,128 | — | | Cost of revenue | 3 | (2,455) | 352 | | Research and development expenses | | (7,898) | (13,322) | | Administrative expenses | | (9,548) | (8,840) | | Other operating income | 3 | 2,864 | — | | Operating loss | | (9,909) | (21,81 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2022 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . OR ☐ SHELL COMPANY REPORT PURSUANT TO SE ...

Exhibit 99.1 Mereo BioPharma Reports Full Year 2022 Financial Results and Recent Highlights — London, March 28, 2023 - Mereo BioPharma Group plc (NASDAQ: MREO) ("Mereo" or the "Company"), a clinical-stage biopharmaceutical company focused on rare diseases, today announced its financial results for the year ended December 31, 2022 and provided an update on recent corporate highlights. "In 2022, we made important progress in the ongoing advancement of our core rare disease programs. The data from our Phase 2 ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2021 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . OR ☐ SHELL COMPANY REPORT PURSUANT TO SE ...

| --- | --- | --- | --- | |---------------------------------------------------------------------|-------------------------------------------------------------------------|-------|-------| | | | | | | | | | | | | Unlocking the potential of novel targets for cancer and rare diseases | | | | M e r e o B i o P h a r m a G r o u p p l c N A S D A Q : M R E O | S e p t e m b e r 2 0 2 1 | | | Disclaimer This presentation has been prepared by Mereo BioPharma Group plc (the "Company") solely for your information an ...

Table of Contents UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended December 31, 2020 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from to . FORM 20-F (Mark One) ☐ SHELL COMPANY REPORT PURSUANT TO SECTI ...