# EDGAR Filing Document

**Accession Number:** 0001719714
**File Stem:** 0001193125-26-148835
**Filing Date:** 2026-4
**Character Count:** 1404
**Document Hash:** 2bdbec4e24cc11278eba31c326de1c9d
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-148835.hdr.sgml**: 20260409

**ACCESSION NUMBER**: 0001193125-26-148835

**CONFORMED SUBMISSION TYPE**: ARS

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260409

**DATE AS OF CHANGE**: 20260409

**EFFECTIVENESS DATE**: 20260409

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Mereo BioPharma Group plc
- **CENTRAL INDEX KEY:** 0001719714
- **STANDARD INDUSTRIAL CLASSIFICATION:** PHARMACEUTICAL PREPARATIONS [2834]
- **ORGANIZATION NAME:** 03 Life Sciences
- **EIN:** 000000000
- **STATE OF INCORPORATION:** X0
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** ARS
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-38452
- **FILM NUMBER:** 26849774

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** ONE CAVENDISH PLACE
- **STREET 2:** FOURTH FLOOR
- **CITY:** LONDON
- **PROVINCE COUNTRY:** X0
- **ZIP:** W1G 0QF
- **BUSINESS PHONE:** 4403330237300

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** ONE CAVENDISH PLACE
- **STREET 2:** FOURTH FLOOR
- **CITY:** LONDON
- **PROVINCE COUNTRY:** X0
- **ZIP:** W1G 0QF

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Mereo Biopharma Group plc
- **DATE OF NAME CHANGE:** 20171016

### Attached PDF Documents

**Attachment 1:** `mreo_2025_ars_filed.pdf`

_No text found in this document._