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Mereo BioPharma Group plc

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FY2023 Annual Report · Mereo BioPharma Group plc
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Company Number 09481161

MEREO BIOPHARMA GROUP PLC
Annual Report and Accounts
Year ended December 31, 2023

 
MEREO BIOPHARMA GROUP PLC
CONTENTS

Directors, secretary and advisors

Strategic Report

Directors' Remuneration Report

Directors’ Report

Statement of Directors’ Responsibilities

Financial Statements
Independent Auditor’s report

Consolidated Statement of Comprehensive (Loss)/Income

Consolidated Balance Sheet

Consolidated Statement of Cash Flows

Consolidated Statement of Changes in Equity

Notes to the Consolidated Financial Statements

Company Balance Sheet

Company Statement of Changes in Equity

Notes to the Company Financial Statements

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MEREO BIOPHARMA GROUP PLC
DIRECTORS, SECRETARY AND ADVISERS

Directors

Dr. Denise Scots-Knight (Chief Executive Officer)
Michael Wyzga (Chairman)
Dr. Jeremy Bender
Dr. Anders Ekblom
Dr. Pierre Jacquet
Dr. Annalisa Jenkins
Dr. Deepa Pakianathan
Justin Roberts
Dr. Daniel Shames
Marc Yoskowitz

Company Secretary

Charles Sermon

Registered Office

4th Floor, One Cavendish Place
London
W1G 0QF

Company Number

09481161

Independent Auditors

Solicitors

Registrars

PricewaterhouseCoopers LLP
3 Forbury Place
23 Forbury Road
Reading
RG1 3JH

Latham & Watkins LLP
99 Bishopsgate
London EC2M 3XF

Link Group
10th Floor, Central Square
29 Wellington Street
Leeds, LS1 4DL

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MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Introduction

Mereo BioPharma Group plc (the “Company”, “Mereo” or “Parent Company”) is a public limited company incorporated 
under the laws of England and Wales and is listed on the Nasdaq Capital Market (“Nasdaq”). The Company is a “quoted 
company” for the purposes of the Companies Act 2006 (the “Companies Act”).

The Directors present their strategic report together with the directors’ remuneration report, directors’ report, audited 
consolidated financial statements of Mereo BioPharma Group plc and its subsidiaries (collectively, where the "Company" 
is  referred  to  throughout  the  consolidated  financial  statements,  this  refers  to  Mereo  BioPharma  Group  plc  and  its 
subsidiaries. Where the "Company" is referred to in the company only accounts, this refers to Mereo BioPharma Group 
plc only), audited company financial statements and auditors’ report for the year ended December 31, 2023.

The Company has also filed with the U.S. Securities and Exchange Commission (the “SEC”) its Annual Report on Form 
10-K  for  the  year  ended  December 31,  2023,  which  contains  additional  disclosures  regarding  some  of  the  matters 
discussed in this report. In previous years, the Company filed its Annual Report on Form 20-F, as it qualified as a Foreign 
Private Issuer ("FPI"). On June 30, 2023, the Company determined it would no longer qualify as an FPI and effective 
January  1,  2024,  the  Company  began  complying  with  and  reporting  under  the  SEC  rules  and  Nasdaq  listing 
requirements applicable to U.S. domestic filers.

Business overview and strategy

We are a biopharmaceutical company focused on the development of innovative therapeutics for rare diseases. We 
have developed a portfolio of late-stage clinical product candidates. Our two rare disease product candidates are 
setrusumab for the treatment of osteogenesis imperfecta (OI) and alvelestat primarily for the treatment of severe 
alpha-1 antitrypsin deficiency-associated lung disease (AATD-LD). Setrusumab has received orphan designation for 
OI from the European Medicines Agency (EMA) and the U.S. Food and Drug Administration (FDA), PRIME 
designation from the EMA and has rare pediatric disease designation from the FDA. Alvelestat has received U.S. 
Orphan Drug Designation for the treatment of AATD and Fast Track designation for the treatment of AATD-LD. 

Our strategy is to selectively acquire and develop product candidates for rare diseases that have already received 
significant investment from large pharmaceutical and biotechnology companies and that have substantial pre-clinical, 
clinical and manufacturing data packages. Since our formation in March 2015, we have successfully executed on this 
strategy by acquiring six clinical-stage product candidates of which four were in rare diseases and oncology. Four of 
our six clinical-stage product candidates were acquired from large pharmaceutical companies and two were acquired 
in the merger with OncoMed Pharmaceuticals in 2019  ("the Merger"). We have successfully completed large, 
randomized Phase 2 clinical trials for four of our product candidates and the Phase 1b portion of a Phase 1b/2 for a 
fifth product candidate.

Rare diseases represent an attractive development and, in some cases, commercialization opportunity for us since 
they typically have high unmet medical need and can utilize regulatory pathways that facilitate acceleration to approval 
and to the potential market. Development of products for rare diseases involve close collaboration with key opinion 
leaders and investigators, and close coordination with patient organizations. Rare disease patients are typically 
treated at a limited number of specialized sites which helps identification of the patient population and enables a small, 
targeted sales infrastructure to commercialize the products in key markets. 

Our Strategy 

We intend to become a leading biopharmaceutical company developing innovative therapeutics that aim to improve 
outcomes for patients with rare diseases. The key elements of our strategy to achieve this goal include: 

•

Rapidly develop and potentially commercialize our rare disease product candidates. Our rare 
disease product candidates setrusumab and alvelestat have been acquired or in-licensed from 
pharmaceutical companies following strategic de-prioritization. Prior to this they have received significant 
investment in preclinical, toxicology, clinical studies and CMC. We have built expertise in the areas of 
patient identification, clinical study design and regulatory strategy. This combination of prior investment and 
our expertise has allowed us to rapidly develop our two rare disease product candidates. For example, 
setrusumab has completed a Phase 2 in adult OI patients and our partner Ultragenyx is now enrolling two 
Phase 3 studies in pediatric and young adult OI patients, and alvelestat has completed two Phase 2 studies 
and is now progressing into Phase 3. We may seek to partner our rare disease product candidates for 
further development where it makes strategic sense to do so. However, as commercialization of rare 
disease products requires a highly specialized and focused infrastructure, we may seek to commercialize 

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

•

•

•

our rare disease product candidates, once approved, in select markets. For example, as part of our 
partnership with Ultragenyx, we have the retained the commercial rights to setrusumab in Europe and the 
U.K. 

Explore out-licensing or sale opportunities with third parties for further clinical development and/or 
commercialization of our non-core and non-rare disease programs. Based on the results from the 
Phase 1b portion of the Phase 1b/2 clinical trial for etigilimab in select solid tumor types and the Phase 2 
clinical trial for acumapimod, we plan to enter into one or more strategic relationships with third parties for 
etigilimab and acumapimod to undertake the next phase of clinical development and, if approved, 
commercialization. Our second oncology product, navicixizumab, for the treatment of late line ovarian 
cancer, has completed a Phase 1 study and has been partnered on a global basis with Feng Biosciences. 
In March 2018, we reported top-line Phase 2b data for leflutrozole for the treatment of HH and in December 
2018, we reported positive results from the safety extension study for leflutrozole. In December 2023 we 
entered into an exclusive global license agreement with ReproNovo for the development and 
commercialization of leflutrozole.   

Continue to be a partner of choice for pharmaceutical and biotechnology companies. We believe 
that we are a preferred partner for pharmaceutical and biotechnology companies as they seek to unlock the 
potential in their development pipelines and deliver therapeutics to patients in areas of high unmet medical 
need. We have strong relationships with these companies, as evidenced by our agreements with Novartis 
and AstraZeneca, as well as our partnership with Ultragenyx, and a track record of structuring transactions 
that enable us to leverage our core capabilities while creating value for all stakeholders. We intend to 
continue to enter into strategic relationships that align our interests with those of pharmaceutical and 
biotechnology companies and that we believe to be mutually beneficial. 

Leverage our expertise in business development. Our senior management team has extensive 
relationships with large pharmaceutical and biotechnology companies. These relationships are important to 
us as we seek to form strategic partnerships on our product candidates and as appropriate, to grow our 
pipeline of product candidates in rare diseases. 

Our Pipeline 

The following table summarizes our pipeline for our product candidates. We have global commercial rights to 
alvelestat, etigilimab and acumapimod and commercial rights to setrusumab in Europe and the U.K. We granted 
Ultragenyx an exclusive license to develop and commercialize setrusumab in the U.S. and rest of the world, and we 
have licensed global rights for navicixizumab to Feng Biosciences (formerly OncXerna) and global rights for 
leflutrozole to ReproNovo.

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Core Rare Disease Product Candidates

Setrusumab (BPS-804/UX143) for the Treatment of Osteogenesis Imperfecta 

Overview

In collaboration with Ultragenyx, we are developing setrusumab for the treatment of OI, a rare genetic disease, which 
is caused by variants in the COL1A1 or COL1A2 genes, which results in bones that can break easily and is commonly 
known as brittle bone disease. Setrusumab is a novel, intravenously administered antibody that is designed to inhibit 
sclerostin, a protein that inhibits the activity of bone-forming cells, known as osteoblasts. We believe that by blocking 
sclerostin, setrusumab has the potential to induce or increase osteoblast function and maturation of these cells, and to 
inhibit bone-resorption through osteoclasts, increasing overall bone mass and thereby reducing fractures in OI 
patients. 

Background of Osteogenesis Imperfecta 

OI is a genetic disorder characterized by fragile bones and reduced bone mass, resulting in bones that break easily, 
loose joints and weakened teeth. In severe cases, patients may experience hundreds of fractures in a lifetime. In 
addition, people with OI often suffer from muscle weakness, early hearing loss, fatigue, curved bones, scoliosis 
(curved spine), brittle teeth, respiratory problems and short stature. The disease can be extremely debilitating and 
even fatal in newborn infants with a severe form of the disease. OI is a rare condition that affects an estimated 60,000 
people in the U.S. and Europe, according to estimates by Orphanet. 

There are eight recognized forms of OI, designated type I through type VIII. Type I is cited to be the least severe form, 
although patients can still have many fractures and other physical manifestations of the disease, while Type II is the 
most severe and frequently causes death at or shortly after birth. OI Type I is the most prevalent and estimated to 
occur in approximately 50% to 60% of OI patients. Type III and Type IV patients may be wheelchair bound and 
typically have many fractures through their lifetime. Type III and Type IV patients may also have short stature, 
scoliosis and hearing loss by the time they are young adults. OI is typically diagnosed at birth with most patients being 
born with a blue or gray tint to the sclera, the part of the eye that is usually white. 

Current Treatment Landscape for Osteogenesis Imperfecta 

There are no therapies approved by the FDA or EMA for the treatment of OI. The only treatments available to OI 
patients are the acute management of fractures as they occur and drugs such as bisphosphonates which are typically 
used to treat osteoporosis and are not approved for OI but are commonly used off-label in children. Bisphosphonates 
slow down the rate at which osteoclasts resorb bone. These anti-resorptives include Aredia (pamidronate), Fosamax 
(alendronate) and Reclast (zoledronic acid). Bisphosphonates have not consistently been shown to reduce fractures in 
OI adult patients and the effect of long-term therapy with these drugs remains unclear in both adults and children.

Current treatment of OI is directed towards management of fractures with casting or surgical fixation. Following either 
of these, physical therapy will often be required. Preventative surgeries, such as intramedullary, or in-bone, rodding 
fixation are also undertaken. Supportive care for the disease involves surgery to correct deformities, internal splinting 
of bones with metal rods, bracing to support weak limbs and decrease pain, physical therapy and muscle 
strengthening and aerobic conditioning to improve bone mass and strength. 

Our Approach 

Our product for treating OI is setrusumab, a fully human monoclonal antibody that is designed to inhibit sclerostin. 
Sclerostin is produced in osteocytes, which are mature bone cells that are thought to be the mechanoreceptor cells 
that regulate the activity of bone-building osteoblasts and bone-resorbing osteoclasts. Sclerostin inhibits the activity of 
osteoblasts. We believe that by blocking sclerostin, setrusumab has the potential to induce or increase osteoblast 
activity and maturation of these cells, increasing overall bone mass, and thereby reducing fractures in OI patients. 

In 2016, we obtained orphan drug designation in OI for setrusumab in the U.S. and the EU and, in November 2017, 
the program was accepted into the Priority Medicines scheme (“PRIME”) of the EMA. In September 2020 we received 
rare pediatric disease designation for setrusumab in OI from the FDA. 

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Clinical Development of Setrusumab 

Prior to our acquisition of setrusumab, Novartis conducted four clinical trials in 106 patients and healthy volunteers. In 
2019 we completed a Phase 2b dose-finding study (ASTEROID) study of setrusumab in 112 adult patients with Type I, 
III and IV OI. Following the 12-month dosing part of the trial, patients were followed for a further twelve months to 
examine the off-effects of setrusumab. The results of this Phase 2b trial supported the progression of setrusumab into 
a pivotal study in OI. Setrusumab was safe and well-tolerated in the study. There were no cardiac-related safety 
concerns observed in the study.

Top-line Data from Setrusumab Phase 2 Portion of Phase 2/3 Orbit Study 

In June 2023, we along with our partner, Ultragenyx, announced successful completion of the Phase 2 portion of the 
pivotal Phase 2/3 Orbit study in 24 pediatric and young adult patients (5 to <26 years old) for setrusumab in OI, which 
compared two different doses of setrusumab, 20 and 40 mg/kg, to determine the optimal dose for the Phase 3. The 
primary endpoint of the Phase 2 study was circulating levels of P1NP, a biomarker reflective of bone formation. The 
study also evaluated numerous other endpoints, including bone mineral density (“BMD”) and annualized fracture rates, 
PK and safety. Across all patients evaluated at both doses, these data showed statistically significant increases in 
levels of serum P1NP, a sensitive marker of bone formation, and substantial and significant improvement in BMD by 
three months. An increase in lumbar spine BMD from baseline of 9.4% at 20 mg/kg (n=10) was observed, with a 
substantial mean change in the Z-score of +0.65 from -2.12 (n=11) at baseline. There was no significant difference 
between the two doses tested, accordingly, the 20 mg/kg was selected as the Phase 3 dose. The changes observed 
in BMD in these younger patients at 3 months are equivalent to the changes following 12 months treatment with 
setrusumab in adult patients reported from the Phase 2b ASTEROID study. The 24 patients from the Phase 2 portion 
of the ORBIT study are continuing to receive setrusumab treatment in an open-label extension study.

Additional data from the Phase 2 portion of the Phase 2/3 Orbit study were reported at the annual ASBMR meeting in 
October 2023 and demonstrated that treatment with setrusumab significantly reduced incidence of fractures in patients 
with OI with at least 6 months of follow-up and continued to demonstrate ongoing and meaningful improvements in 
lumbar spine bone BMD. As of the cut-off date and following at least six months of treatment with setrusumab, the 
annualized fracture rate across all 24 patients in the Phase 2 portion of the study was reduced by 67%. The median 
annualized fracture rate of 0.72 in the two years prior to treatment was reduced to 0.00 (n=24, p=0.042) during the 
mean treatment duration period of nine months. These fractures excluded fractures of the fingers, toes, skull and face 
consistent with the Phase 3 study design. In the two years prior to treatment with setrusumab all patients experienced 
at least one fracture. Following initiation of treatment with setrusumab, 20 patients experienced no radiographic-
confirmed fractures, and 4 patients experienced 7 radiographic-confirmed fractures in 5 separate events. Two of these 
fractures occurred within the first two months of treatment, a time in which setrusumab-induced increases in BMD may 
have been suboptimal in reducing fractures. 

At the six-month timepoint, treatment with setrusumab resulted in a mean increase in lumbar spine BMD from baseline 
of 13% at 20 mg/kg (n=11) and 16% at 40 mg/kg (n=8), which represented the same substantial mean improvement in 
Z-score of +0.85 for both dose groups at 6 months compared to a combined mean baseline Z-score of –1.68. The 
small apparent difference in BMD change from baseline is likely related to differences in patients assigned to the two 
treated groups. There was no statistically significant difference in BMD percent change or Z-score change from 
baseline between the 20 and 40 mg/kg dosing cohorts. As of the data cut-off for our October 2023 announcement, 
there were no treatment-related serious adverse events observed in the study.
The 24 patients from the Phase 2 portion of the Orbit study are continuing to receive setrusumab treatment at 20 
mg/kg in an open label extension study. Additional longer-term Phase 2 data from the Orbit study are expected in the 
second half of 2024. 

Phase 3 Orbit and Cosmic Studies 

The Phase 3 portion of the Orbit study is enrolling approximately 150 patients (aged 5 - <26 years old) at 50 sites 
across 12 countries and is expected to complete enrollment around the end of the first quarter of 2024. Patients are 
randomized 2:1 to receive setrusumab (20 mg/kg) or placebo, respectively, with a primary efficacy endpoint of a 
reduction in annualized clinical fracture rate, excluding fingers, toes, skull and face. 

A second study, Cosmic, a Phase 3 open-label study in younger children (aged 2 - < 7 years old) is enrolling 
approximately 60 patients, with enrollment expected to complete around the end of the first quarter of 2024. The 
Cosmic study is an active-controlled study evaluating the effect of setrusumab compared to intravenous 
bisphosphonates (IV-BP) therapy (randomized 1:1) on annualized total fracture rate. 

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We believe the Orbit and Cosmic trials, if successful, will support U.S. and European regulatory filings for the potential 
approval of setrusumab for the treatment of osteogenesis imperfecta.

Alvelestat (MPH-966) for the Treatment of Severe Alpha-1 Antitrypsin Deficiency (AATD)-Associated Lung 
Disease: 

Overview 

We are developing alvelestat for the treatment of severe AATD-associated Lung Disease (AATD-LD). AATD-LD is a 
potentially life-threatening rare, genetic condition that results in severe debilitating diseases, including early-onset 
pulmonary emphysema. Alvelestat is a novel, oral small molecule designed to inhibit neutrophil elastase (NE). 
Scientific data indicate that the increased risk of lung tissue injury in patients with AATD may be due to inadequately 
controlled NE caused by insufficient alpha-1 antitrypsin (AAT). We believe that by inhibiting NE, alvelestat has the 
potential to reduce the destruction of lung tissue and stabilize clinical deterioration in patients with severe AATD-LD. 

Background of Alpha-1-Antitrypsin Deficiency 

AATD is a genetic disease. There are estimated to be 50,000 people in North America and 60,000 in Europe with 
severe AATD, which we define as AATD in patients with serum AAT levels <11mM, (most commonly either a PiZZ 
genotype or Null/Null genotype). although there are approximately only 10,000 people diagnosed in North America. 
The major function of AAT in the lungs is to protect the connective tissue from NE released from triggered neutrophils. 
The lungs are normally defended from NE attack by AAT, which is a highly effective inhibitor of NE. Severe AATD 
patients produce ineffective or no AAT and are, therefore, unable to defend against NE attack. As a result, severe 
AATD patients commonly experience degeneration of lung function, such as early-onset pulmonary emphysema, 
which significantly affects quality of life and life expectancy. They may require oxygen therapy in order to continue 
their daily lives and the most severe patients may require lung transplantation. 

AATD is the result of a mutation of the SERPINA1 gene. Most people with severe AATD inherit two copies of the 
defective PiZ allele, or gene variant, of the SERPINA1 gene, resulting in a PiZZ genotype. Patients with a PiZZ 
genotype have approximately 15% of normal AAT levels. Individuals who inherit two copies of the Null allele, resulting 
in a Null/Null genotype, do not produce any AAT. These two groups are at very high risk of developing lung disease. 
AATD patients with the PiZZ genotype experience loss of lung tissue as measured by lung density on computed 
tomographic (CT) scanning, a decline in FEV1, a standard measure of exhalation and poor quality of life. Respiratory 
disease can progress to need for chronic oxygen therapy, lung transplant and death. The annual mortality rate in this 
genotype estimated to be 4%. Given that individuals with the Null/Null genotype do not produce any AAT, we believe 
that they are likely to experience an even greater annual decline in FEV1. 

Current Treatment Landscape for Alpha-1 Antitrypsin Deficiency

AATD patients are monitored by pulmonary functions tests, including spirometry. Treatment involves bronchodilators 
and inhaled corticosteroid medications and pulmonary rehabilitation, with increased intensity of therapy guided by 
disease severity. Surgical options include lung volume reduction surgery and lung transplantation. Both are highly 
invasive, and transplantation is only an option for a portion of patients with end-stage disease despite optimal therapy. 

Augmentation therapy is available for AATD, using a partially purified plasma preparation highly enriched for AAT that 
is administered weekly by intravenous infusion. This therapy was first approved by the FDA in the 1980s based on its 
biochemical efficacy, meaning its ability to raise blood levels of AAT, but not based on clinical outcome data. Several 
observational studies have suggested that AAT augmentation therapy may slow the rate of decline in lung function in 
a subgroup of AATD patients with moderate-to-severe airflow obstruction, but not for those with earlier stages of lung 
disease. In a randomized, controlled trial of augmentation therapy, patients had some reduction in the progression of 
emphysema, as assessed by measuring lung density using computed tomography. The study did not show significant 
slowing in the decline in FEV1. 

We believe that current therapies for AATD are inadequate. Surgical options are limited to a few patients, are highly 
invasive, have variable results, and do not address the underlying pathology of AATD. AAT augmentation therapy, 
while FDA approved, was not approved on the basis of clinical outcome data. Benefit has not been demonstrated in 
patients with earlier stages of lung disease where there is an unmet need to reduce progression of irreversible lung 
tissue loss. In Europe Regulatory approval was on efficacy based on slowing of CT density decline, without effects on 
other measures such as FEV1 or patient-reported outcomes. Further, AAT augmentation therapy is generally not 

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

reimbursed and thus is not currently available to patients in several jurisdictions, including some key European 
markets. In addition, AAT augmentation therapy requires potentially inconvenient weekly intravenous infusions. 

Our Approach 

Our product candidate for treating severe AATD is alvelestat, a potent, specific oral small molecule that is designed to 
inhibit NE. We believe that by inhibiting NE, alvelestat has the potential to reduce the enzymatic destruction of lung 
tissue. Furthermore, we believe that convenient oral dosing of alvelestat could provide a significant advantage 
compared to the current treatments for AATD of surgery or weekly intravenous AAT augmentation therapy. Alvelestat 
is not being investigated for treatment of the hepatic disease which is due to the damaging effect of accumulated 
abnormal ZZ protein in the liver, rather than the protein deficiency. Liver disease occurs in approximately 10% cases 
of severe AATD, predominantly in children.

Alvelestat has received U.S. Orphan Drug Designation for the treatment of AATD and Fast Track designation in 
AATD-LD.

Clinical Development of Alvelestat 

Prior to our license of alvelestat, AstraZeneca conducted 12 clinical trials involving 1,776 subjects, including trials in 
COPD, bronchiectasis and cystic fibrosis. Although these trials were conducted in diseases other than AATD, we 
believe the data demonstrated potential clinical benefit and biomarker evidence of treatment effect for AATD patients. 
These trials created a safety database of 1,149 subjects treated with alvelestat. 

Phase 2 Clinical Trials in AATD 

In May 2022, we successfully completed a Phase 2, placebo-controlled, 12-week, dose-ranging, proof-of-concept 
clinical trial (ASTRAEUS) in 99 patients with AATD-LD in the U.S and the EU which demonstrated statistically 
significant changes in neutrophil elastase activity and biomarkers of disease severity at different time points up to 12 
weeks. We enrolled only adult patients with PiZZ or Null/Null genotypes or rare genotypes with severe deficiency of 
alpha-1 antitrypsin (<11 microMolar) with confirmed emphysema, who had not received AAT augmentation therapy or 
had undergone a wash-out period following AAT augmentation therapy. The study examined two doses of alvelestat 
(120 mg and 240 mg) compared to placebo with three primary endpoints along the pathogenic pathway of lung 
disease in AATD patients. These primary endpoints were plasma desmosine (a biomarker of protease-driven elastin 
breakdown), Aα-Val360, a specific biomarker of NE proteolytic activity, and neutrophil elastase activity in blood. 
Secondary endpoints were safety, exacerbation frequency, and pharmacokinetics. Exploratory endpoints were St. 
Georges Respiratory Questionnaire (SGRQ) which is a patient-reported outcome of Respiratory Health Status and 
lung function tests, including FEV1.

We subsequently announced additional Phase 2 data from this study in October 2022 demonstrating the association 
of biomarker responders in alvelestat-treated patients to improvement in the activity domain of the St George’s 
Respiratory Questionnaire, but not in patients treated with placebo. 

No new safety signals were detected in patients with AATD-LD compared to the previous studies conducted by 
AstraZeneca. The most frequent adverse event was headache which was more frequently observed at the higher 
doses of alvelestat (120 mg and 240 mg) used in AATD-LD than at the lower doses used in previous studies in COPD, 
bronchiectasis and cystic fibrosis. There was evidence of tolerance to headache being induced, and we intend to use 
a dose-escalation regime for initiation of treatment in future trials. Monitoring for Adverse Events of Special Interest 
(AESIs) documented a single treatment-emergent adverse event (TEAE) of liver function abnormality (raised hepatic 
transaminases, without meeting Hy’s Law) and one AESI of prolonged QTc, in which study-drug stopping criteria were 
met were reported in the ASTRAEUS trial. Both events fully resolved on study drug cessation.

In October 2023, the University of Alabama at Birmingham (UAB) and Mereo reported on the ATALANTa study, a 
multi-center, double-blind, placebo-controlled, proof-of-concept investigator-led study run by Professor Mark 
Dransfield, Director of the Division of Pulmonary, Allergy and Critical Care, UAB, in collaboration with Mereo. 
ATALANTa investigated the safety and efficacy of alvelestat 120 mg, or matched placebo, twice daily, for 12 weeks in 
a broad range of individuals with AATD-LD, including those with less severe phenotypes (Pi*SZ) and earlier stage 
patients than were enrolled in the Company-sponsored ASTRAEUS Phase 2 study, and those receiving augmentation 
therapy. The study randomized 63 patients, 32 in the 120 mg alvelestat arm (44% on augmentation therapy) and 31 in 
the placebo arm (48% on augmentation therapy). The results demonstrated with the 120 mg dose of alvelestat (the 
lower dose used in the Phase 2 ASTRAEUS study) are consistent with those observed in ASTRAEUS on blood 
neutrophil elastase activity and changes in the disease-activity biomarkers, desmosine and Aα-val360. The data 

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STRATEGIC REPORT

demonstrate that the 120 mg dose of alvelestat is safe on top of augmentation and support Mereo’s selection of the 
240 mg dose to be studied in the planned Phase 3 pivotal trial. Exploratory endpoints in ATALANTa demonstrated 
statistically significant improvement in SGRQ Activity score (p=0.0106 versus placebo) and a trend to improvement in 
SGRQ Total score at 12 weeks in patients not receiving augmentation therapy and having earlier stage lung disease 
(based on their FEV1). The ATALANTa and ASTRAEUS data support the use of the SGRQ Total score in the planed 
Phase 3 pivotal trial and inclusion of patients with earlier stages of lung disease. Safety in ATALANTa was consistent 
with the known alvelestat profile and there were no liver or QTc AESIs documented.

Planned Phase 3 Clinical Trial in AATD

In March 2023, we announced the outcome of the end-of-Phase 2 discussions with the FDA and the EMA (Scientific 
Advice) and the guidance on the Phase 3 endpoints received from both Regulatory Agencies. In the EU, the Company 
received guidance that lung density by computed tomography (CT) scan with a relaxed p value (p<0.1) may be 
sufficient for full regulatory approval. In the U.S., following additional FDA interactions in the second half of 2023, the 
Company has aligned on St George’s Respiratory questionnaire Total score as the primary endpoint, with a functional 
assessment as a key secondary endpoint, which, if successful, is expected to support submissions for full regulatory 
approval in the U.S. Inclusion of patients with earlier and later stage lung disease progression in the planned 
registrational study could increase the addressable patient population for alvelestat. Based on the guidance from the 
FDA and the EMA, the Company is designing a single, global, Phase 3 study evaluating the 240 mg dose of alvelestat 
versus placebo in approximately 220 patients with AATD-LD with two independent primary endpoints to support 
applications for full marketing approvals in both the U.S. and EU.

The Company continues to evaluate non-dilutive financing options for the development and potential 
commercialization of alvelestat in AATD-LD while continuing to progress the program to maintain the planned Phase 3 
timelines. 

Phase 1b/2 Clinical Trial in Bronchiolitis Obliterans Syndrome (“BOS”)

BOS is a rare progressive, fibrosing disease of the lungs affecting approximately 6% of the estimated 12,000 stem cell 
transplants a year in the U.S., often as part of graft versus host disease. For lung transplants, approximately 50% of 
the patients develop BOS by 5 years, which is the leading cause of retransplant and mortality. There are an estimated 
10,000 people living with lung transplant and BOS in the U.S. and Europe. BOS is characterized by neutrophil 
infiltration in the lung, excess neutrophil elastase and inflammation. The pathology of BOS in stem cell transplant and 
lung transplant is overlapping. 

As BOS is driven by elevated neutrophils in the lung and excess NE activity, leading to lung damage through elastin 
breakdown in the tissue and progressive fibrosis, and ultimately respiratory failure we believe our approach using 
alvelestat to inhibit NE has significant advantages. By inhibiting NE, we believe alvelestat will reduce the accelerating 
effects of NE-driven inflammation on BOS leading to increased success rate of SCT and lung transplant. The 
investigator-led clinical program is designed to generate data on clinical endpoints that would potentially support 
registration and reimbursement in SCT. 

An investigator-sponsored open-label Phase1b/2 study in Bronchiolitis Obliterans Syndrome (BOS) following 
allogeneic stem cell transplant is being conducted. The study uses within patient dose escalation from 60 mg BID up 
to 240 mg BID, over the initial 8 weeks of study, with treatment continued for up to 6 months. Interim results from 7 
patients enrolled in the Phase 1b study were reported in December 2021 showing stabilization or improvement in lung 
function measured by Forced Expiratory Volume in 1 second, (FEV1) in 6 of 7 patients, and supportive biomarker 
responses. Evaluation of the clinical and safety data from 10 patients in the Phase 1b supported the dose to be 
progressed and expansion into the Phase 2 portion of the study which was initiated in the second half of 2022. No 
safety signals have been detected in this study. 

Etigilimab (MPH-313) for the Treatment of Advanced Solid Tumors 

Overview 

Etigilimab is an antibody against TIGIT (T-cell immunoreceptor with Ig and ITIM domains). TIGIT is a next generation 
checkpoint receptor shown to block T-cell activation and the body’s natural anti-cancer immune response. Etigilimab is 
an IgG1 monoclonal antibody which binds to the human TIGIT receptor on immune cells with a goal of improving the 
activation and effectiveness of T-cell and NK cell anti-tumor activity.

We acquired etigilimab in the Merger with Mereo BioPharma 5 (formerly OncoMed Pharmaceuticals, Inc.) in 2019.

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Clinical Development of Etigilimab 

Our oncology product candidate, etigilimab (an anti-TIGIT antibody), has completed a Phase 1a dose escalation clinical 
trial  in  23  patients  with  advanced  solid  tumors  and  has  been  evaluated  in  a  Phase  1b  study  in  combination  with 
nivolumab in select tumor types. 

In 2023, we completed the Phase 1b portion of an open label Phase1b/2 basket study (the ACTIVATE study) evaluating 
etigilimab  in  combination  with  nivolumab  in  three  rare  tumors,  two  specific  subtypes  of  soft-tissue  sarcomas,  uveal 
melanoma  and  testicular  germ  cell  cancer,  three  gynecological  carcinomas,  cervical,  endometrial  and  ovarian 
carcinomas and any solid tumor with high mutation burden, all in the recurrent/metastatic setting. 

The  Phase  1b  portion  of  the  ACTIVATE  study  enrolled  76  patients  in  total.  Data  from  this  study  were  presented  at 
several major medical conferences (ASCO, 2022; ESMO, 2023). The trial evaluated objective response rate as a primary 
endpoint and safety, duration of response, pharmacokinetics, anti-drug antibodies, progression-free disease and other 
endpoints  as  secondary  endpoints.  Objective  responses  were  reported  for  patients  with  gynecological  cancers,  rare 
tumors, and soft-tissue sarcoma with 7 patients remaining on study for at least 335 days. The combination of etigilimab 
and nivolumab was generally well tolerated with a safety profile qualitatively similar to that of nivolumab alone. The main 
drug-related safety findings included rash, pruritis, fatigue and headache and the number of Grade 3 events was seven. 
No Grade 4 or Grade 5 events were reported. Additionally, we have found several intratumoral biomarkers (PVR, TIGIT, 
and  CD226+/CD8  T  cells)  that,  with  further  testing,  might  be  predictive  of  response  to  treatment.  At  this  time,  the 
Company has no plans to conduct and directly fund further clinical studies of etigilimab. 

In April 2021, the Company entered into partnership with Cancer Focus Fund for a Phase 1b/2 study of etigilimab in 
Clear Cell Ovarian Cancer to be conducted at The University of Texas MD Anderson Cancer Center. The Phase 1b/2 
study is being financed by Cancer Focus Fund. Clear cell ovarian cancer is a rare cancer that accounts for approximately 
5 to 10% of all ovarian carcinomas in North America. Enrollment is continuing in this investigator-led Phase 1b/2 study 
of etigilimab plus nivolumab (the EON study) and based on encouraging data from the first 10 patients enrolled, the 
study has been expanded to enroll an additional 10 patients in the Phase 2 portion of the study. 

Our Non-Core Partnered Programs

Following  completion  of  successful  Phase  1b  or  Phase  2  studies  the  products  below  are  programs  which  we  have 
successfully partnered.

Navicixizumab (OMP-305B83) for Treatment of Ovarian Cancer 

Navicixizumab (“Navi”) is a bispecific antibody that inhibits delta-like ligand 4 (DLL4) and vascular endothelial growth 
factor (VEGF). 

We acquired Navi in the Merger. In January 2020, we out-licensed Navi to Feng Biosciences (formerly OncXerna). In 
addition, Navi is the subject of a contingent value rights agreement between us and Computershare from April 2019 (the 
"Mereo CVR Agreement") which sets forth certain rights and obligations of us with respect to Navi. 

Leflutrozole (BGS-649) 

Leflutrozole is an oral inhibitor of aromatase. Excess aromatase in fat tissue reduces testosterone, LH and FSH, leading 
to HH. In Phase 2 trials, leflutrozole normalized testosterone, increased LH and FSH, improved total sperm count, and 
was reported to be well-tolerated. 

In December 2023, we entered into an exclusive global license agreement with ReproNovo for the development and 
commercialization  of  leflutrozole,  a  non-steroidal  aromatase  inhibitor.  Under  the  terms  of  the  License  Agreement, 
ReproNovo,  a  reproductive  medicine  company,  is  responsible  for  all  future  development  and  commercialization  of 
leflutrozole.  Mereo  received  an  upfront  payment  and  will  be  eligible  to  receive  up  to  $64.3  million  in  future  clinical, 
regulatory  and  commercial  milestones  as  well  as  tiered  mid-single  digit  royalties  on  global  annual  net  sales  of 
leflutrozole. 

10

 
MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Our Non-Core Programs Available for Partnering

Following completion of a successful Phase 2 study, we intend to out-license or sell the following program. 

Acumapimod (BCT-197) for the Treatment of AECOPD 

Acumapimod  is  a  p38  MAP  kinase  inhibitor  therapy  for  treatment  during  severe  acute  exacerbations  of  COPD 
(AECOPD). In a Phase 2 trial, acumapimod given over 5 days in patients hospitalized with AECOPD demonstrated a 
statistically significant reduction in re-hospitalization for treatment failure and recurrent exacerbations. Acumapimod was 
reported to be safe and well tolerated. Following meetings with FDA and EMA a global Phase 3 registrational program 
has been designed.

We intend to out-license or sell acumapimod to third parties for the further development of acumapimod recognizing the 
need for greater resources to take this product candidate to market.

Financial review
The following table sets forth Mereo’s results of operations for the years ended December 31, 2023 and 2022.

Year ended December 31,

2023
£'000s

2022
(Restated%)
£'000s

Change

£'000s

%

Revenue
Cost of revenue
Research and development expenses
Administrative expenses
Operating loss
Finance income
Finance costs
Changes in fair value of financial instruments
Net foreign exchange (loss)/gain
Other income and expenses
Loss before tax
Taxation
Loss attributable to equity holders of the parent
Currency translation of foreign operations
Total comprehensive loss attributable to equity
   holders of the parent
* Percentage change not meaningful
% See Note 4 in the financial statements for details regarding the restatement as a result of a voluntary change in 
accounting policy.

7,914
(11,935)
(15,445)
(13,502)
(32,968)
1,710
(1,642)
207
(2,000)
46
(34,647)
1,465
(33,182)
1,845

7,914
(12,871)
9,517
6,041
10,601
1,014
1,268
(7,598)
(4,033)
(765)
487
(432)
55
3,673

—
936
(24,962)
(19,543)
(43,569)
696
(2,910)
7,805
2,033
811
(35,134)
1,897
(33,237)
(1,828)

*
*
(38)%
(31)%
(24)%
146%
(44)%
(97)%
*
(94)%
(1)%
(23)%
(0)%
(201)%

(31,337)

(35,065)

(11)%

3,728

Comparison of Years Ended December 31, 2023 and 2022

Revenue
Revenue of £7.9 million for the year ended December 31, 2023 comprised a one-time milestone payment of £7.1 million 
($9.0 million) resulting from the achievement of a clinical milestone on setrusumab by Ultragenyx and a £0.8 million 
($1.0  million)  up-front  payment  from  our  global  license  agreement  with  ReproNovo  for  the  development  and 
commercialization of leflutrozole. No revenue was recognized in the year ended December 31, 2022.

Cost of revenue
Cost of revenue for the year ended December 31, 2023 was £11.9 million compared to a credit of £0.9 for the year 
ended December 31, 2022.

Cost of revenue for 2023 was comprised of £9.9 million representing the carrying value of the leflutrozole rights granted 
to ReproNovo under our global license agreement (see Note 13), and £2.0 million in relation to our 2015 agreement with 
Novartis, under which we pay a percentage of proceeds resulting from milestone revenue received, subject to certain 
deductions.

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

In 2021, we received a £36.5 million ($50 million) upfront payment from Ultragenyx and recognized cost of revenue of 
£8.4 million reflecting the Company's obligation under our 2015 agreement with Novartis. Pursuant to this agreement, 
£7.2 million was paid in cash, and £2.4 million was withheld and recognized as a deferred liability within other current 
liabilities, reflecting anticipated future costs to be incurred which are allowable deductions from amounts owed under 
the agreement. As these costs were subsequently incurred and recognized in research and development expenses or 
general and administrative costs, the liability was discharged and released through cost of revenue. In 2022, £0.9 of this 
liability was discharged and accordingly recognized as a credit to cost of revenue. 

Research and development (“R&D”) Expenses
The following table sets forth our R&D expenses by product development program for the years ended December 31, 
2023 and 2022.

Setrusumab (BPS-804/UX143)
Alvelestat (MPH-966)
Etigilimab (MPH-313)
Leflutrozole (BGS-649)
Acumapimod (BCT-197)
Other
Total R&D expenses

Year ended
December 31,

2023
£'000s

2022
£'000s

Change

£'000s

%

3,743
5,597
5,832
93
23
157
15,445

3,356
5,430
15,802
58
50
266
24,962

387
167
(9,970)
35
(27)
(109)
(9,517)

12%
3%
(63)%
60%
(54)%
(41)%
(38)%

Total R&D expenses decreased by £9.5 million, or 38%, from £25.0 million in 2022 to £15.4 million in 2023.

The  decrease  was  primarily  due  to  a  £10.0  million  reduction  in  R&D  expenses  for  etigilimab,  partially  offset  by  an 
increase of £0.4 million in expenses for setrusumab.

The reduction in etigilimab was primarily due to the winding down and completion of the open label Phase 1b/2 basket 
study in combination with an anti-PD-1 in a range of tumor types. Program expenses for setrusumab are in relation to 
ongoing  activities  in  Europe,  and  input  into  development,  regulatory  and  manufacturing  plans  with  our  partner, 
Ultragenyx, as the global development of the program is funded by Ultragenyx pursuant to our license and collaboration 
agreement.  Program  expenses  for  alvelestat  primarily  include  the  preparatory  work  for  the  Phase  3  study,  including 
CMC and drug formulation activities, SGRQ validation activities and regulatory interactions. 

Administrative expenses
Administrative expenses decreased by £6.0 million, or 31%, from £19.5 million in 2022 to £13.5 million in 2023.

The decrease in the current year is primarily related to overall reductions in staff costs, professional fees and corporate 
costs of £1.4 million, along with £2.9 million received from our depositary to reimburse certain expenses incurred by us 
in respect of our ADR program in the current and prior years and £1.5 million received under a claim on our Directors 
and Officers insurance policy to reimburse us for certain legal and professional costs incurred in prior years. 

Finance income and costs
Total finance costs decreased from £2.9 million in 2022 to £1.6 million in 2023. This decrease is primarily due to the 
significantly lower average balance of convertible loan notes outstanding in 2023 compared to 2022. This reduction 
was due to the conversion and repayment of the Private Placement Loan Notes between June and August of 2023, as 
well as a partial conversion in July 2022.

Total finance income increased £1.0 million from £0.7 million in 2022 to £1.7 million in 2023. The increase is related to 
higher interest rates on cash and short term deposits.

Changes in fair value of financial instruments
The total change in fair value of financial instruments for 2023 was a gain of £0.2 million, a decrease of £7.6 million 
compared to an unrealized gain of £7.8 million in 2022. The unrealized gain in 2023 was due to the expiry of the Private 
Placement warrants, offset by an unrealized loss on the Bank loan warrants as a result of an increase in the market 
price  of  our  ADSs.  The  unrealized  gain  in  2022  primarily  resulted  from  our  Private  Placement  warrants  driven  by  a 
decline in the market price of our ADSs. 

12

 
MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Net foreign exchange (loss)/gain
The net foreign exchange loss for 2023 was £2.0 million compared to a gain of £2.0 million in 2022, a change of £4.0 
million. The net foreign exchange loss is primarily related to the impact of the strengthening of the pound sterling on 
translation of foreign currency balances primarily denominated in U.S. dollars.

Taxation
The income tax benefit for 2023 was £1.5 million compared to a benefit of £1.9 million in 2022, a change of £0.4 million. 
The income tax benefit is comprised of a £0.4 million cash tax refund in respect of income taxes paid in 2021 and eligible 
cash rebates of £1.1 million (2022: £1.3 million) paid or receivable from the tax authorities in the jurisdictions within 
which we operate for eligible types of research and development activities and associated expenditure (the “R&D tax 
credit”).  The  decrease  in  R&D  tax  credits  is  primarily  driven  by  a  decrease  in  total  research  and  development 
expenditure.

Currency translation of foreign operations
The  currency  translation  of  foreign  operations  for  the  year  ended  December 31,  2023  was  a  credit  of  £1.9  million 
compared to an expense of £1.8 million for the year ended December 31, 2022. The £3.7 million change is primarily 
related to the strengthening of the pound sterling to the U.S. dollar in 2023 compared to 2022.

Liquidity and Capital Resources
Overview

Under the current business plan and cash flow forecasts, and in consideration of our ongoing research and development 
efforts  and  our  general  corporate  funding  requirements,  we  anticipate  that  our  current  on-hand  cash  resources  will 
extend into 2026. However, we will need additional external funding to complete our development plans and potentially 
commercialize selected rare disease products. We plan to fund our operations through cash on hand and a combination 
of non-dilutive funding sources, public or private equity or debt financings or other sources.

We  do  not  currently  have  any  approved  product  candidates  and  as  a  result,  have  not  generated  any  revenue  from 
product  sales.  As  a  result,  to  date,  we  have  financed  our  operations  primarily  through  the  issuances  of  our  equity 
securities,  convertible  debt  and  warrants.  Through  these  offerings  we  raised  $209  million  (£165.3  million),  including 
$12.0 million (£9.3 million) raised in July 2023 through an "at-the-market" offering pursuant to our Open Market Sale 
Agreement with Jefferies LLC.

We have also received payments under various license and collaboration agreements, including:

•

•

•

An  upfront  payment  of  $50  million  (£36.5  million)  under  the  license  and  collaboration  agreement  with 
Ultragenyx for setrusumab in 2021 and a further milestone payment of $9.0 million (£7.1 million) in July 2023.

An upfront payment of $4.0 million (£3.1 million) under the license and collaboration agreement with Feng 
Biosciences (formerly OncXerna) for navicixizumab in 2020 and a further milestone payment of $2.0 million 
(£1.5 million) in 2022.

An  upfront  payment  of  $1.0  million  (£0.8  million)  under  the  global  license  agreement  with  ReproNovo  for 
leflutrozole in December 2023.

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Cash Flows
Comparison of Years Ended December 31, 2023 and 2022
The table below summarizes our cash flows (used in)/from operating, investing and financing activities for the years 
ended December 31, 2023 and 2022.

Net cash used in operating activities
Net cash from investing activities
Net cash from/ (used in) financing activities
Net (decrease)/increase in cash and short-term deposits

Year Ended December 31,

2023
£'000s

2022
£'000s

(17,630)
1,291
5,092
(11,247)

(38,820)
1,497
(784)
(38,107)

Operating Activities
Net cash used in operating activities for the year ended December 31, 2023 was £17.6 million, a decrease of £21.2 
million from £38.8 million in 2022. The decrease was primarily driven by net cash receipts of £6.1 million for payments 
received from Ultragenyx and ReproNovo, reductions of £9.5 million in R&D expenses and £6.0 million in administrative 
expenses, and R&D tax credits and income tax refunds received of £2.5 million compared to a payment made of £1.5 
million in the year ended December 31, 2022.

Investing Activities
Net cash from investing activities for the year ended December 31, 2023 was £1.3 million, a decrease of £0.2 million 
from £1.5 million in 2022. The decrease was primarily driven by payments to acquire intangible assets and receipt of a 
non-recurring milestone payment from Feng Biosciences (formerly OncXerna) in 2022 under the licensing arrangement 
for navicixizumab.

Financing Activities
Net cash from financing activities for the year ended December 31, 2023 was £5.1 million, an increase of £5.9 million, 
compared to cash outflow of £0.8 million in 2022. This increase is primarily due to £8.9 million of net proceeds from a 
share issuance through an "at-the-market" offering in July 2023, partially offset by payments of £2.6 million in principal 
and £0.7 million in accrued interest following the modification and redemption of convertible loan notes.

Financial outlook
We expect that our existing cash and short-term deposits will enable us to fund our currently committed clinical trials 
and operating expenses and capital expenditure requirements into 2026.

Principal risks and uncertainties
The risks described below are those that we currently believe may materially affect us. We may face additional risks 
and uncertainties not currently known to us or that we currently deem to be immaterial.

•

•

•

•

•

We have a limited operating history and have never generated any revenue from product sales. 

We will need additional funding to complete the development of our current product candidates; to license, 
acquire, and develop future product candidates; and to commercialize our product candidates, if approved. 
If we are unable to raise capital when needed, we could be forced to delay, reduce, or eliminate research 
and development programs, any future commercialization efforts or acquisitions of potential product 
candidates. 

We depend heavily on the success of setrusumab, alvelestat and etigilimab. We cannot give any 
assurance that any of these product candidates will receive regulatory approval, which is necessary before 
they can be commercialized. If we are unable to commercialize setrusumab, alvelestat and etigilimab, 
whether on our own or through agreements with third parties, or experience significant delays in doing so, 
our ability to generate revenue and our financial condition will be adversely affected. 

Our future growth and ability to compete depends on retaining our key personnel and recruiting additional 
qualified personnel.

We depend on enrollment of patients in our clinical trials for our product candidates. If we are unable to 
enroll patients in our clinical trials, or enrollment is slower than anticipated, in particular for our product 
candidates with rare disease indications, our research and development efforts could be adversely 
affected. 

14

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

•

•

•

•

•

•

•

•

•

•

•

•

•

•

We may become exposed to costly and damaging liability claims, either when testing our product 
candidates in the clinic or at the commercial stage, and our product liability insurance may not cover all 
damages from such claims. 

Enacted and future healthcare legislation may increase the difficulty and cost for us to obtain marketing 
approval of and commercialize our product candidates and may affect the prices we may set. 

We operate in a highly competitive and rapidly changing industry, which may result in others acquiring, 
developing, or commercializing competing product candidates before or more successfully than we do.

We intend to directly commercialize or co-commercialize our product candidates for rare diseases and to 
out-license or sell our other product candidates for further development and/or commercialization. If we are 
unable to develop our own sales, marketing, and distribution capabilities or enter into business 
arrangements, we may not be successful in commercializing our product candidates. 

The successful commercialization of our product candidates will depend in part on the extent to which 
governmental authorities and health insurers establish adequate coverage, reimbursement levels, and 
pricing policies. Failure to obtain or maintain coverage and adequate reimbursement for our product 
candidates, if approved, could limit our ability to market those product candidates and decrease our ability 
to generate revenue. 

Our existing and future product candidates may not gain market acceptance, in which case our ability to 
generate revenues from product sales will be compromised. 

We rely, and expect to continue to rely, on our partners to develop and commercialize our licensed or 
partnered product candidates. If our partners do not secure adequate funding or satisfy their obligations 
under our agreements with them, or if they terminate our licenses, partnerships or collaborations with them, 
we may not be able to develop or commercialize our licensed or partnered product candidates as planned. 

We rely, and expect to continue to rely, on third parties, including independent investigators and CROs, to 
conduct our clinical trials. If these CROs do not successfully carry out their contractual duties or meet 
expected deadlines, we may not be able to obtain regulatory approval for or commercialize our product 
candidates, or such approval or commercialization may be delayed, and our business could be 
substantially harmed.

We currently rely on third-party CMOs for the production of clinical supply of our product candidates and 
intend to rely on CMOs for the production of commercial supply of our product candidates, if approved. Our 
dependence on CMOs may impair the development of our product candidates and may impair the 
commercialization of our product candidates, which would adversely impact our business and financial 
position.

We rely on patents and other intellectual property rights to protect our product candidates, the obtainment, 
enforcement, defense and maintenance of which may be challenging and costly. Failure to enforce or 
protect these rights adequately could harm our ability to compete and impair our business. 

We may become subject to third parties’ claims alleging infringement of third-party patents and proprietary 
rights, or we may be involved in lawsuits to protect or enforce our patents and other proprietary rights, 
which could be costly and time consuming, delay or prevent the development and commercialization of our 
product candidates, or put our patents and other proprietary rights at risk.

Our business and operations may suffer, and proprietary information may be lost, in the event of 
information technology system failures, cyberattacks or deficiencies in our cybersecurity.

Unlike in prior years, as of January 1, 2024, we are required to comply with the domestic reporting regime 
under the Securities and Exchange Act of 1934 and will incur significant legal, accounting and other 
expenses, and our management will be required to devote substantial additional time to new compliance 
initiatives and corporate governance matters.

Failure to establish and maintain effective internal controls could have a material adverse effect on our 
business and stock price. 

Risk Mitigations
The Board believes that it has taken all reasonable steps to satisfy itself that the risk management process is effective 
and fit for purpose. Our control of risk is supported by an in-house quality team that has developed and implemented a 
Good  Practice  ("GxP")  compliant  quality  management  system  to  mitigate  risk.  The  Head  of  Quality  and  Compliance 

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

reports to the General Counsel with appropriate escalation measures in place to review and control new and emerging 
risks within the business. We set out below the key risk mitigations by area:

Clinical  development  and  manufacturing:  Our  highly  experienced  in-house  team  manages  the  control  over  our 
external vendors and partners that assist us as sponsor in managing our clinical trials under GxP. In addition to quality 
audits of our CROs and clinical trial sites, we also undertake specialized data analytics that are designed to validate the 
quality of data generated from our clinical trials. The Group also has an experienced in-house team that is working with 
a number of specialist manufacturers in respect of its drug manufacturing capabilities.

Commercialization: For our rare disease programs, we engage with regulators, health technology assessment (“HTA”) 
bodies, treating physicians and patient representative organizations at all stages of our development. We are also in 
regular dialogue with the European payers through the Mechanism of Coordinated Access to Orphan Medicinal Products 
(“MoCA”). Treating physicians, notably those in the lead centers of expertise are part of our development work on an 
ongoing basis and we also consult regularly with the patient representative organizations from the therapeutic areas we 
intend  to  address.  Market  research  work,  including  pricing,  has  been  initiated  for  our  two  rare  disease  candidate 
products. We constantly monitor development programs from other companies in our target indications, to allow us to 
effectively understand and evaluate the competitive landscape for setrusumab, alvelestat and etigilimab on an ongoing 
basis.

Regulatory: We have an experienced in-house team that works with several specialized regulatory advisors to give 
guidance  on  regulatory  strategy  for  each  of  our  product  candidates.  For  certain  of  our  product  candidates  (e.g. 
setrusumab),  our  partners  are  leading  the  regulatory  strategy,  providing  additional  expertise  and  resource.  As  our 
programs continue through their respective development plans, the relative risk that we fail to obtain regulatory approval 
continues  to  decrease.  Matters  that  remain  outside  our  control,  e.g.,  the  scientific  performance  of  a  compound  in  a 
clinical study, or the ultimate decision-making of a regulatory body, are mitigated by dialogue with decision-makers and 
rigorous study preparation and design. 

Compliance  with  laws  and  regulations:  Following  our  U.S.  listing  of  our  American  Depository  Shares  (“ADSs”)  in 
2019, we introduced new policies and procedures to ensure that our business practices are aligned with those expected 
of a Nasdaq listed company. We cancelled admission of the Company’s ordinary shares to trading on the AIM market 
of the London Stock Exchange in December 2020. Following the cancellation of AIM admission, many of our corporate 
governance policies and procedures as well as the terms of reference for the Board Committees were updated to reflect 
the Company’s sole listing on the Nasdaq, including most recently to comply with the rules and regulations of the SEC 
applicable  to  U.S.  domestic  filers,  which  are  available  for  inspection  on  our  website.  As  a  data  controller,  we  are 
accountable for any third-party data service providers we engage to process personal data on our behalf. We attempt 
to address the associated risks by performing security assessments, detailed due diligence and regularly performing 
privacy  and  security  reviews  of  our  vendors  and  requiring  all  such  third-party  providers  with  data  access  to  sign 
agreements, including business associate agreements, and where required under EU or UK law, obligating them to only 
process data according to our instructions and to take sufficient security measures to protect such data. The Group’s 
General Counsel and Company Secretary, who serves as an Executive Officer, is responsible for ensuring compliance 
or compliance with laws and regulations. For certain matters, the Company will engage external counsel or regulatory 
advisors. We continued to make progress during the year in refining our internal financial processes and controls to 
support  our  attestation  under  Section  404(a)  of  the  Sarbanes-  Oxley  Act  of  2002  and  involved  our  Audit  and  Risk 
Committee (“ARC”) throughout the process.

Intellectual  Property:  We  have  an  experienced  IP  advisor  who  has  worked  with  the  Company  since  2015  and,  in 
addition, we utilize expert external counsel in the prosecution and maintenance of our global IP portfolio.

Funding: As at December 31, 2023 the Group had total cash resources (being cash and short-term deposits) of £45.1 
million. The Directors have prepared detailed quarterly cashflow forecasts through December 31, 2025. These forecasts 
indicate that the Group has a cash runway into 2026 and will have sufficient funds to meet its liabilities as they fall due 
for at least the next 12 months.

16

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Key Performance Indicators
The Directors consider that our underlying cash burn, cash balances and future cash runway, and our committed and 
planned expenditure on research and development (“R&D”) to be the Group’s key financial KPIs at its current stage of 
development. Progress and performance against these key financial KPIs are discussed in the “Financial review” section 
of the Strategic Report.

The Directors consider that the most important non-financial KPIs are:

•

•

•

Progress with our R&D pipeline including our clinical studies and related pre-clinical, regulatory and manufacturing 
activities;

Business development including partnering, out-licensing and in-licensing activities; and

The development and prosecution of our patent portfolio.

These activities are discussed in the “Business overview and strategy” section of the Strategic Report.

Information about the Company’s employees
The Group’s future success depends on the ability to recruit and retain key employees. Our employee base includes 
key people in strategic areas including in corporate development, patient access and commercial planning, as we move 
our rare disease programs forward and seek to partner our specialty products. We have been fortunate to attract and 
retain  highly  experienced  individuals  in  clinical  development,  clinical  operations,  regulatory,  finance,  legal, 
manufacturing, intellectual property and quality assurance, supporting them with strong leadership at the executive and 
Board level.

Our internal expertise is leveraged with external organizations, including contract research organizations (“CROs”) and 
contract  manufacturing  organizations  (“CMOs”)  as  well  as  bespoke  consulting  agreements.  This  combination  has 
allowed  the  Group  to  initiate  international  clinical  trial  studies  within  a  relatively  short  period  of  time  since  acquiring 
products from large pharma, to progress these programs through the different stages of development and to plan for 
commercialization, whilst also maintaining a lean internal infrastructure.

Across  the  U.K.  and  the  U.S.,  we  have  33  employees  as  of  the  date  of  this  annual  report.  Mereo  seeks  to  appoint 
employees with appropriate skills, knowledge and experience for the roles they undertake and thereafter to develop, 
incentivize and retain staff. The Board of Directors (“the Board”) recognizes its legal responsibility to ensure the well-
being, safety and welfare of the Group’s employees and maintain a safe and healthy working environment for them and 
for our visitors. If an employee has a concern about unsafe conditions or tasks, they are encouraged to report their 
concerns immediately to their manager, the Head of Human Resources or the General Counsel. Employees may also 
contact a dedicated whistleblowing hotline, independent of the Group, if anonymity is sought.

The Group is fully committed to the elimination of unlawful and unfair discrimination and values the differences that a 
diverse workforce brings to the organization. The Group endeavors to not discriminate because of age, disability, gender 
reassignment, marriage and civil partnership, pregnancy and maternity, race (which includes color, nationality and ethnic 
or national origins), religion or belief, sex or sexual orientation. This is captured in our Employee Handbook, which all 
employees are required to read and acknowledge at least on an annual basis. The Group undertakes an annual review 
of its policies and procedures to establish its position about compliance and best practice and monitor and promote a 
healthy corporate culture.

A breakdown of Directors and employees by gender as at December 31, 2023 is as follows:

Position

Directors of the Company (CEO and Non-Executive)
Executive officers
Employees
Total

Male

Female

Total

7
2
12
21

3
2
15
20

10
4
27
41

Executive officers consist of senior managers, in addition to the CEO, who have responsibility for planning, directing or 
controlling  the  activities  of  the  Group.  As  at  December 31,  2023,  this  includes  the  Chief  Financial  Officer,  General 
Counsel and Business Development, Chief Patient Access and Commercial Planning and the Chief Scientific Officer.

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Our  Directors  have  significant  operational  experience  in  leadership  positions  in  large  and  small  pharmaceutical  and 
biotechnology companies. They provide valuable strategic input into our corporate development programs and our R&D 
strategy, corporate and financing strategies.

Diversity and human rights
The Company recognizes the value in promoting a culture of diversity and inclusion and aims to both reflect the global 
communities in which we operate and have a positive impact upon them. At present the Company does not have a 
specific  policy  on  human  rights,  however  we  have  several  policies  that  promote  the  principles  of  human  rights.  We 
partner with our suppliers and external organizations to ensure long-term mutually beneficial relationships, and respect 
for human rights is embedded throughout our global network.

Social and environmental matters
We currently outsource our research, development, testing and manufacturing activities. These activities are subject to 
various environmental, health and safety laws and regulations, which govern, among other things, the controlled use, 
handling,  release  and  disposal  of,  including  the  maintenance  of  a  registry  for,  hazardous  materials  and  biological 
materials.  If  we  or  our  partners  fail  to  comply  with  such  laws  and  regulations,  we  could  be  subject  to  fines  or  other 
sanctions.

As with other companies engaged in similar activities, we face a risk of environmental liability that is inherent in our 
current and historical activities, including liability relating to releases of or exposure to hazardous or biological materials. 
Environmental,  health  and  safety  laws  and  regulations  are  becoming  more  stringent.  We  may  be  required  to  incur 
substantial  expenses  in  connection  with  future  environmental  compliance  or  remediation  activities,  in  which  case, 
production  and  development  efforts  being  carried  out  by  our  outsourced  partners  relating  to  our  products  may  be 
interrupted or delayed.

Quantification and reporting methodology
The  2019  UK  Government  Environmental  Reporting  Guidelines  and  the  GHG  Protocol  Corporate  Accounting  and 
Reporting Standard (revised edition) were followed to ensure the Streamlined Energy and Carbon Reporting (“SECR”) 
requirements were met. The SECR disclosures include the U.K. based subsidiaries only and exclude non-U.K. based 
subsidiaries. Refer to Note 5 of the consolidated financial statements for information on subsidiaries.

The energy data was collated using existing reporting mechanisms. These methodologies provided continuous record 
of electricity use.

The  energy  data  was  converted  to  carbon  emissions  using  the  2023  UK  Government  GHG  Conversion  Factors  for 
Company Reporting. The associated emissions are divided into the combustion of fuels and the operation of facilities 
(scope 1), purchased electricity, heating and cooling (scope 2) and in-direct emissions that occur as a consequence of 
company activities (scope 3). During the year the Group only had emissions relating to scope 2.

Estimations
The electricity use was compiled from invoices and meter readings.

Energy used by the company (in KWH)
Emissions associated with the reported energy  use (tCO2e)

2023

61,790
13

Intensity Ratio
The chosen primary intensity ratio is total gross emissions in metric tonnes CO2e (mandatory emissions)
per employee.

Tonnes of CO2e per employee

2023

0.51

2022

68,255
13

2022

0.46

Energy efficiency action during current financial year
The management of resources and the need to embed sustainability is an important issue for the Group and the 
following actions related to reducing energy use have been implemented:

18

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

Energy consumption in 2023 was slightly lower than the prior year due to continued hybrid working and ongoing focus 
on energy efficiency, while the metric tonnes CO2e per employee slightly increased due to the fewer number of 
employees.

In  addition,  during  the  office  refurbishment  in  2021,  we  prioritized  energy  saving  choices  such  as  insulating  floors, 
motion-activated  lighting,  and  operational  changes  to  the  heating  system.  As  a  company,  we  are  also  committed  to 
sourcing our electricity from fully renewable sources. We continue to invest in energy efficiency and are currently in the 
process of migrating to more energy efficient IT storage solutions.

Section 172(1) Companies Act 2006
The Directors in line with their duties under section 172 of the Companies Act 2006, act in a way they consider, in good 
faith to promote the success of the Group for the benefit of its members as a whole. As set out within the content of this 
annual report, the Directors have considered the following matters throughout the year and in formulating the future 
strategy of the business:

•

•

•

•

•

•

The likely long-term consequences of any decision;

The interests of the Group’s employees;

The need to foster the Group’s business relationships with suppliers, customers and others;

The impact of the Group’s operations on the community and the environment;

The desirability of the Group maintaining a reputation for high standards of business conduct; and

The need to act fairly between shareholders of the Group.

The Board of Directors meets regularly to discuss developments of the Group’s existing portfolio of product candidates, 
strategic  business  development,  ongoing  operations  and  other  relevant  matters.  The  Board  takes  care  to  have 
considered the likely consequences on all stakeholders of the decisions and actions which they take, and these are 
discussed regularly in the Board meetings. The Group’s long-term strategy and the principal risks and uncertainties in 
the view of the Board are set out in pages 14 to16.

As set out in greater detail above, the Board considers the Group’s future success to depend on our ability to recruit and 
retain key employees. The Board maintains constructive dialogue with employees through the Chief Executive Officer 
(“CEO”).  The  Company  also  holds  regular  “town  hall”  all-employee  meetings  and  video  conference  calls  where  the 
Executive Team provides updates on strategic progress and a forum for answering questions. We implemented a revised 
long-term incentive plan in April 2019, which allows us to incentivize and retain employees across the Group and aligns 
employees’ objectives with those of the Group. We granted share options under these schemes to all employees and 
Non-Executive Directors in 2023 and 2022.

The Group endeavors to maintain good relationships with our suppliers by contracting, where possible, on their standard 
business terms and paying them in accordance with the relevant terms agreed. We meet with our significant suppliers 
regularly, using the meetings to ensure that our research programs are planned and delivered effectively and in a timely 
and cost-efficient manner. This ensures that the Group’s and our significant suppliers’ interests are aligned. The Group 
also maintains excellent working relationships with our partners in collaboration agreements, with regular meetings and 
updates.

The Board understands the importance of environmental, social and governance matters, and it endeavors to consider 
the impact on the community when operating its business. Our greenhouse gas emissions report which is in compliance 
with streamlined energy and carbon reporting requirements is included on page 18. In 2023, there has been continued 
use of video conferencing for a large portion of internal and external meetings, including board meetings, reducing the 
need  for  travel.  The  emissions  saving  resulting  from  these  activities  has  not  been  quantified,  but  this  practice  has 
resulted  in  some  behavior  changes  that  are  expected  to  continue  for  the  foreseeable  future.  We  continue  to  seek 
opportunities to better utilize energy efficient and sustainable solutions wherever possible.

The Board recognizes the importance of maintaining high standards of business conduct. The Group operates a Code 
of Business Conduct and Ethics, publicly available on our website, which contains general guidelines for conducting the 
business of the Group consistent with the highest standard of business ethics. In addition, the Group has an Employee 
Handbook that employees are required to read and acknowledge at least on an annual basis, and which also includes 
details of the whistleblowing policy that allows all employees to raise concerns to senior management in strict confidence 
about any unethical business practices, fraud, misconduct or wrongdoing.

MEREO BIOPHARMA GROUP PLC
STRATEGIC REPORT

In maintaining good corporate governance structures, the Board considers the need to act fairly to all shareholders of 
the Group. The Group maintains a regular dialogue with our institutional investors. The Group’s website has a dedicated 
investor  section  which  provides  useful  information  for  our  shareholders,  including  the  latest  announcements,  press 
releases, published financial information, details of our product candidates and our current development pipeline and 
other information about the Company.

This strategic report, which has been prepared in accordance with Companies Act 2006, has been approved by the 
Board and signed on behalf of the Board:

Michael Wyzga
Chairman

Dr. Denise Scots-Knight
Chief Executive Officer

April 25, 2024

April 25, 2024

20

 
MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Annual Statement by Chair of Remuneration Committee

Introduction

Dear Shareholder,

As Chair of the Remuneration Committee (the “Committee”), I am pleased to present, on behalf of the Board of Directors 
of Mereo BioPharma Group plc (the “Company”) the Directors’ Remuneration Report for the year ended December 31, 
2023 (the “Report”). We are required to prepare this Report due to the Company’s listing in the U.S. on the Nasdaq 
Capital Market and our UK incorporation.

This Directors' Remuneration Report includes this Annual Statement and the Annual Report on Remuneration for the 
financial year ended December 31, 2023. The Directors’ Remuneration Report will be subject to an advisory shareholder 
vote at the 2024 Annual General Meeting (“AGM”). The current Directors' Remuneration Policy ("Policy") was approved 
by shareholders at the AGM on May 22, 2023. The Policy took formal effect from the date of approval and is intended 
to  apply  until  the  2026  AGM,  unless  a  new  version  is  presented  to  shareholders  in  the  interim.  The  full  shareholder 
approved Policy can be found in the Annual Report and Accounts for the year ended December 31, 2022. 

The  Remuneration  Committee  has  concluded  that  the  current  overarching  remuneration  framework  continues  to  be 
effective. As a reminder, we operate a simple and transparent structure comprising salary, benefits and pension and, 
subject to stretch performance conditions, an annual bonus. In addition, we regularly make awards of equity incentives 
to encourage longer-term commitment and sustainable performance. The Committee considers that the Policy provides 
a  fair  basis  for  the  remuneration  of  Executive  Directors,  rewarding  performance  against  short-term  objectives  which 
provide  the  foundations  for  the  achievement  of  longer-term  corporate  goals,  and  making  the  enhancement  of 
shareholder value a critical success factor, both in the short and the long term.

In  the  year  ended  December  31,  2023,  all  decisions  taken  on  remuneration  were  in  accordance  with  the  terms  of 
reference of the Remuneration Committee and involved the exercise of appropriate commercial judgment. No discretion 
was exercised in relation to directors’ remuneration in the year beyond the exercise of the judgment of the Remuneration 
Committee and to ensure the bonus objectives remained aligned to the Company strategy.

Yours sincerely,

Dr. Anders Ekblom
Chair of the Remuneration Committee

April 25, 2024

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Annual Report on Remuneration
2.1 Single total figure of remuneration of each Director (audited)
The  Directors’  proportion  of  fixed  and  variable  remuneration  is  shown  in  the  below  table  for  the  years  ended 
December 31, 2023 and 2022. Fixed remuneration is the sum of salary, taxable benefits and pension (columns a, b and 
e of the single total figure table). Variable remuneration is the sum of any annual bonus, share awards or other types of 
remuneration (columns c, d and other of the single total figure table). Further information about share awards can be 
found on page 26.

Year ended 
December 31,2023 (in £)

(a)
Salary/fees 
(i)

(b)
Benefits (ii)

(c)
Bonus

(d)
Long-term
incentives 
(iii)

(e)
Pensions

Other
(iv)

2023 Total

Fixed
remuneration
(a, b and e)

Variable
 remuneration
(c, d and other)

Executive
Dr. Denise
Scots-Knight (1)

Non-Executive
Dr. Jeremy Bender
Dr. Anders Ekblom
Dr. Pierre Jacquet
Dr. Annalisa Jenkins
Dr. Deepa Pakianathan
Justin Roberts (2)
Dr. Daniel Shames
Mike Wyzga
Marc Yoskowitz

443,872

15,504

199,742

47,184
60,233
44,854
43,872
52,900
—
41,286
88,776
36,116

—
—
—
—
—
—
—
—
—

—
—
—
—
—
—
—
—
—

—

—
—
—
—
—
—
—
—
—

44,387

—
—
—
—
—
—
—
—
—

—

—
—
—
—
—
—
—
—
—

703,505

503,763

199,742

47,184
60,233
44,854
43,872
52,900
—
41,286
88,776
36,116

47,184
60,233
44,854
43,872
52,900
—
41,286
88,776
36,116

—
—
—
—
—
—
—
—
—

(1)
(2)

Pension figure included in the table above for Dr. Denise Scots-Knight includes payments in lieu of pension of £ 40,387.
Mr. Roberts has waived all remuneration in respect of his appointment as a Non-Executive Director.

Year ended 
December 31,2022 (in £)

(a)
Salary/fees 
(i)

(b)
Benefits (ii)

(c)
Bonus

(d)
Long-term
incentives 
(iii)

(e)
Pensions

Other
(iv)

2022 Total

Fixed 
 remuneration
(a, b and e)

Variable
remuneration
(c, d and other)

Executive
Dr. Denise
Scots-Knight (1)

Non-Executive
Dr. Jeremy Bender
Dr. Anders Ekblom
Dr. Peter Fellner (2)
Anne Hyland  (3)
Dr. Pierre Jacquet
Dr. Annalisa Jenkins (4)
Dr. Abdul Mullick (3)
Dr. Deepa Pakianathan
Justin Roberts (4)
Dr. Brian Schwartz (2)
Dr. Daniel Shames (4)
Mike Wyzga
Marc Yoskowitz (4)

418,747

14,490

251,248

47,368
55,912
54,342
30,634
39,107
6,839
14,916
45,686
—
36,350
6,839
80,035
6,839

—
—
—
—
—
—
—
—
—
—
—
—
—

—
—
—
—
—
—
—
—
—
—
—
—
—

—

—
—
—
—
—
—
—
—
—
—
—
—
—

41,875

—
—
—
—
—
—
—
—
—
—
—
—
—

—

—
—
—
—
—
—
—
—
—
—
—
—
—

726,360

475,112

251,248

47,368
55,912
54,342
30,634
39,107
6,839
14,916
45,686
—
36,350
6,839
80,035
6,839

47,368
55,912
54,342
30,634
39,107
6,839
14,916
45,686
—
36,350
6,839
80,035
6,839

—
—
—
—
—
—
—
—
—
—
—
—
—

Pension figure included in the table above for Dr. Denise Scots-Knight includes payments in lieu of pension of £37,875.
Dr. Peter Fellner and Dr. Brian Schwartz resigned from the Board on November 10, 2022.
Anne Hyland was appointed to the Board on March 1, 2022 and resigned from the Board on November 10, 2022. Dr. Abdul Mullick was appointed to the Board 
on May 17, 2022 and resigned from the Board on November 10, 2022.
Dr. Annalisa Jenkins, Justin Roberts, Dr. Daniel Shames and Marc Yoskowitz were appointed to the Board on November 10, 2022. Mr. Roberts has waived all 
remuneration in respect of his appointment as a Non-Executive Director.
For non-executive directors who elected to receive Deferred RSUs in lieu of cash for their annual fees, the grant date fair value of Deferred RSUs are included 
within salary/fees.
Benefits represent private medical insurance, life insurance, and income protection during the years ended December 31, 2023 and 2022.
During the year ended December 31, 2023 equity incentive awards with performance conditions or measures were granted as an equity incentive award to the 
CEO. No amount has been included for 2023 because none of the performance conditions had been met during the year. In 2024, certain of the performance 
conditions were met in respect of 282,090 ADSs. The value of PSUs vesting in 2024 will be included in the single total figure of remuneration for the CEO for the 
year ended December 31, 2024.
During the years ended December 31, 2023 and 2022, market value options were granted as an equity incentive award to the CEO and to Non-Executive 
Directors. The market value options do not have performance conditions and are therefore presented as other variable remuneration. The value of the market 
value options granted included in the single figure table is the market value of the underlying shares at the date of grant, less the applicable exercise price. This 
was nil because the exercise price is equal to the market value of the underlying shares on the date of grant.

(1)
(2)
(3)

(4)

(i)

(ii)
(iii)

(iv)

22

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Annual performance bonus
The Company has a discretionary bonus scheme for all employees and the Executive Director (CEO). Bonus payments 
for employees are a percentage of base salary based on performance-based measures against personal and Company-
wide  target    objectives.  Bonus  payments  for  CEO  are  a  percentage  of  base  salary,  based  on  performance-based 
measures  against  Company-wide  target  objectives.  The  amount  of  bonus  payable,  including  the  weighting  of 
achievement of the Company-wide target objectives is at the discretion of the Committee and subject to its review of 
performance against the short-term performance targets at the end of the performance period (which is aligned with the 
financial year).

For the 2023 performance period, the CEO was entitled  to an annual performance bonus of 60% of base salary for a 
target level of performance, which could be increased with stretch performance up to a maximum of 75% of base salary. 
The  agreed  Company-wide  target  objectives  were  met  at  75%  of  target,  meaning  the  bonus  pay-out  for  the  2023 
performance period is 45% of base salary for the CEO.

Specific details of the actual Company-wide target objectives are considered commercially sensitive and therefore not 
disclosed in detail. However, the objectives used to measure the performance of the Chief Executive Officer for 2023 
included the following:

•

•

•

•

•

•

On setrusumab, positive Phase 2 Orbit data and successful transition to the Phase 3 portion of the Orbit study, 
along with initiation of the Phase 3 Cosmic study, leading to achievement of a $9 million milestone payment from 
Ultragenyx. In addition, delivering the agreed key activities under Project SATURN, and in the ongoing activities 
necessary to lay the groundwork for reimbursement in Europe and the UK;

On alvelestat, alignment on the design for a single, global Phase 3 study in AATD-LD and agreement on a patient-
reported outcomes ("PRO") validation plan following additional interactions with the U.S. FDA;

On etigilimab, results from the initial 10 patients of the investigator-led Phase 1b/2 study of etigilimab in combination 
with nivolumab in clear cell ovarian cancer, conducted by a partner,  support  expansion to 20 patients in the study;

Successful achievement of a stretch goal of financial savings to budget; 

In manufacturing, successful delivery of a Phase 3 higher dosage tablet and justification accepted by the regulators 
for alvelestat and additional agreed milestones achieved for setrusumab and etigilimab;

Successful achievement of milestones on intellectual property.

Long-term incentive awards granted during the financial year (audited)

Directors  may  be  granted  long-term  incentive  awards  at  the  discretion  of  the  Committee.  During  the  year  ended 
December 31, 2023:

–

–

Equity incentive awards were granted to the CEO under the 2019 EIP. These equity incentive awards included 
market value options over ADSs and performance based restricted stock units (“PSUs”) over ADSs. The market 
value options over ADSs have a vesting period over four years, with 25% of the award vesting on the first 
anniversary of the grant date and the balance vesting in equal monthly installments over the following three 
years; no performance conditions were attached to the awards. The PSUs vest upon satisfaction of four 
escalating ADS price threshold performance targets over a two-year vesting period.

All  Non-Executive  Directors  were  awarded  options  under  the  Company’s  2019  Non-Executive  Director  Equity 
Incentive Plan (“NED EIP”) to subscribe for share-based awards over a one-year vesting period. The awards vest 
monthly over an annual period from the grant date. The share-based awards granted under the NED EIP were in 
respect of ADSs and do not have performance conditions.

All awards granted under the EIP and NED EIP during the year ended  December 31, 2023, are subject to a service 
condition and  may  be exercised at any  time  between  the relevant vesting date  and  the tenth anniversary of the date  
of grant. PSUs that do not vest will lapse permanently at the end of the two-year performance period.

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Director

Dr. Denise Scots-Knight
Dr. Jeremy Bender
Dr. Anders Ekblom
Anne Hyland
Dr. Pierre Jacquet
Dr. Annalisa Jenkins
Dr. Deepa Pakianathan
Dr. Daniel Shames
Mike Wyzga
Marc Yoskowitz

Grant Date

January 25, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023
February 1, 2023

ADSs
Underlying
Grant

Exercise
Price per ADS
($)

1,150,000
55,000
55,000
55,000
55,000
55,000
55,000
55,000
55,000
55,000

1.01
0.94
0.94
0.94
0.94
0.94
0.94
0.94
0.94
0.94

Face value
($)

1,161,500
51,700
51,700
51,700
51,700
51,700
51,700
51,700
51,700
51,700

Expiration
Date

January 25, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033
February 1, 2033

The exercise price of all options granted during the year under the 2019 EIP and 2019 NED EIP was the market value  
of the ADSs upon closing on the last  business day  before the grant.  The face  value  of all options granted during the 
year was determined based on the exercise  price at the date of grant.

2.2 Payments to past Directors (audited)
There were no payments to past  Directors made  during  the financial year ending December 31, 2023 that are required 
to be disclosed.

2.3 Payments for loss of office (audited)
There were no payments made for loss of office to Directors during  the financial year ending December 31, 2023 that 
are required to be disclosed.

2.4 Directors’ service contracts and letters of appointment
Dr. Denise Scots-Knight joined the Company as an employee on July 29, 2015 and her current service contract is dated  
September 3, 2021. She has a rolling service agreement with a notice  period of twelve months from either party.

The dates of appointment of each  of the Non-Executive Directors serving at December 31, 2023,  are summarized in 
the table below:

Date of appointment

July 29, 2015
April 23, 2019
April 23, 2019
October 1, 2020
September 20, 2021
November 10, 2022
November 10, 2022
November 10, 2022
November 10, 2022

Non-Executive Director

Dr. Anders Ekblom
Michael Wyzga
Dr. Deepa Pakianathan
Dr. Jeremy Bender
Dr. Pierre Jacquet
Dr. Annalisa Jenkins
Justin Roberts
Dr. Daniel Shames
Marc Yoskowitz

24

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

2.5 Statement of Directors’ Shareholding and Share Interests (audited)
The table below sets  out, as at December  31, 2023, the beneficial interest  in the Company’s shares of the Directors 
(together    with  interests  held  by  his  or  her  connected  persons).  In  addition,  the  table    below  also  sets    out  the  total 
number of shares held by Directors which are unvested, the total number of options held by Directors which are vested 
but not yet exercised and the total number of options held by Directors which are unvested.

The total number  of shares which  are unvested are disclosed by those  with and  without  performance conditions. The 
table below is presented in ADSs, with each ADS representing five ordinary shares. Ordinary shares held have been 
converted  into equivalent ADSs.

Awards
Vested

Awards
Vested

Awards
Unvested
with 
performance 
conditions

Awards
Unvested
without 
performance 
conditions

2015 Plan/

Share

Option Plan

(equivalent

ADS

vested

but not yet

exercised)

308,949
—
43,252
—

—

—

—

—

—

—

Beneficially

owned

560,414
—
37,940
—

—

—

—

—

—
19,942,997

Director

Dr. Denise Scots-Knight
Dr. Jeremy Bender
Dr. Anders Ekblom
Dr. Pierre Jacquet
Dr. Analisa Jenkins
Dr. Deepa Pakianathan
Dr. Daniel Shames
Mike Wyzga
Marc Yoskowitz
Justin Roberts(1)

2019

EIP/NED EIP

2019

2019

(ADSs vested,

EIP/NED EIP

EIP/NED EIP

not yet

(ADSs,

(ADSs,

exercised)

unvested)

unvested)

1,238,124
249,577
272,949
223,062
118,554
154,333
115,282
361,843
110,795
—

470,150
—

—

—

—

—

—

—

—

—

1,881,876
14,369
15,807
14,112
13,919
9,167
13,662
18,953
13,492
—

(1)

Mr. Roberts is a partner of Rubric Capital Management LP, which has ultimate voting and investment power over the ordinary shares and ADSs 
held by Rubric Capital Management LP.  He disclaims beneficial ownership of such shares except  to the extent of any  pecuniary interest  
therein. Mr. Roberts has  waived all remuneration in respect  of his appointment as a non-executive director.

The Company does  not have  a formal  policy  on Executive or Non-Executive Director shareholdings in the Company.

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

As at December 31, 2023, the only unvested equity incentive awards subject to performance conditions are PSUs issued 
to  the  CEO  in  2023.  The  table  below  shows  the  interests  of  the  Directors  in  the  Company’s  share  options  as  at 
December 31, 2023. The underlying grants for the 2015 Plan are in ordinary shares and have  been presented here in 
equivalent ADS.

Director

Executive
Dr. Denise
Scots-Knight

Non-Executive
Dr. Jeremy
Bender

Dr. Anders
Ekblom

Dr. Pierre
Jacquet

Dr. Annalisa
Jenkins

Dr. Deepa
Pakianathan

Dr. Daniel
Shames

Mike Wyzga

Marc
Yoskowitz

Equity
Award Plan

2015 Plan
2019 EIP
2019 EIP
2019 EIP
2019 EIP
2019 EIP
2019 EIP
2019 EIP

2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2015 Plan
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP
2019 NED EIP

2019 NED EIP

2019 NED EIP

No. of ADSs 
outstanding
as at 
December 31,
2022

No. of 
ADSs 
granted
in the year

No. of 
ADSs 
lapsed 
during the 
year

No. of 
ADSs 
exercised 
during
the year

No. of 
ADSs 
cancelled 
during
the year

No. of ADSs 
outstanding
as at 
December 31,
2023

Exercise
Price

Per ADS ($)  

(1)(2)

308,949
87,500
87,500
175,000
520,000
1,100,000

1,150,000
470,150

22,000
31,500

55,000

38,032

43,252
5,500

5,500

11,000
31,500
55,000
44,042
1,540

88,393
32,867

1,583

9,167
9,946

5,500
5,500

11,000

31,500
55,000

9,167
9,946

5,500

5,500

11,000
31,500
55,000
46,953
56,342

9,167
9,946

55,000
62,414

55,000
79,674

55,000
59,331

55,000

1,340
57,020

55,000

55,000

893
53,938

55,000
117,430

55,000

47,773

308,949
87,500
87,500
175,000
520,000
1,100,000
1,150,000
470,150

22,000
31,500

55,000

38,032
55,000
62,414
43,252
5,500

5,500

11,000
31,500
55,000
44,042
1,540
55,000
79,674
88,393
32,867

1,583

55,000
59,331
9,167
9,946

55,000

1,340
57,020
5,500
5,500

11,000

31,500
55,000
55,000
9,167
9,946

55,000

893
53,938
5,500

5,500

11,000
31,500
55,000
46,953
56,342
55,000
117,430
9,167
9,946

55,000

47,773

8.63
5.40
3.00
1.84
2.72
1.40
1.01
—

3.32
2.72

1.31

—
0.94
—
8.63
5

3.00

1.84
2.72
1.31
—
—
0.94
—
1.31
—

—

0.94
—
0.79
—

0.94

—
—
5.40
3.00

1.84

2.72
1.31
0.94
0.79
—

0.84

—
—
5.40

3.00

1.84
2.72
1.31
—
—
0.84
—
0.79
—

0.94

—

Grant Date Expiration Date  (2)

September 25, 2015 September 25, 2025
May 20, 2029
July 23, 2029
February 20, 2030
February 1, 2031
January 14, 2032
January 25, 2033
January 25, 2025

May 20, 2019
July 23, 2019
February 20, 2020
February 1, 2021
January 14, 2022
January 25, 2023
January 25, 2023

January 19, 2021
February 1, 2021

January 19, 2031
February 1, 2031

February 1, 2022

February 1, 2032

February 1, 2022
February 1, 2023
February 1, 2023

—
February 1, 2033
—
September 29, 2015 September 29, 2025
May 20, 2029

May 20, 2019

July 23, 2019

July 23, 2029

February 20, 2020
February 1, 2021
February 1, 2022
February 1, 2022
December 1, 2022
February 1, 2023
February 1, 2023
February 1, 2022
February 1, 2022

December 1, 2022

February 1, 2023
February 1, 2023
December 1, 2022
December 1, 2022

February 20, 2030
February 1, 2031
February 1, 2032
—
—
February 1, 2033
—
February 1, 2032
—

—

February 1, 2033
—
December 1, 2032
—

February 1, 2023

February 1, 2033

January 3, 2023
February 1, 2023
May 20, 2019
July 23, 2019

—
—
May 20, 2029
July 23, 2029

February 20, 2020

February 20, 2030

February 1, 2021
February 1, 2022
February 1, 2023
December 1, 2022
December 1, 2022

February 1, 2031
February 1, 2032
February 1, 2033
December 1, 2032
—

February 1, 2023

February 1, 2033

January 3, 2023
February 1, 2023
May 20, 2019

July 23, 2019

February 20, 2020
February 1, 2021
February 1, 2022
February 1, 2022
June 1, 2022
February 1, 2023
February 1, 2023
December 1, 2022
December 1, 2022

—
—
May 20, 2029

July 23, 2029

February 20, 2030
February 1, 2031
February 1, 2032
—
—
February 1, 2033
—
December 1, 2032
—

February 1, 2023

February 1, 2033

February 1, 2023

—

(1)
(2)

PSUs do not have an exercise  price.
Deferred RSUs do not have an exercise  price and payment of Deferred RSUs will generally be made 180 days following separation of service.

26

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Executive Director (CEO)

–

Under  the  terms  of  the  2019  EIP,  awards  can    be  granted  in  respect    of  ordinary    shares,  ADSs,  cash  or  a 
combination thereof.  All grants to our Executive Director since 2019 were in respect  of ADSs.

Under  the  2019  EIP,  we  have  granted  market  value  options  and  PSUs  to  our  CEO,  Dr.  Denise  Scots-Knight. 
Market  value  options vest  over four years  with 25% vesting 12 months after the grant  date and  the balance 
vesting equally over the next 36 months. There are no performance conditions attached to share options granted 
under the 2019 EIP.  The PSUs may vest at any point during a two year period upon satisfaction of four escalating 
ADS price performance targets  .

–

Under the 2015 Plan,  we have  granted market  value  options to our CEO. These  market  value  options were  
fully vested by January 1, 2022. There were no performance conditions attached to share options granted under 
the 2015 Plan.

Non-Executive Directors

–

–

Under the 2015  Plan,  we have  granted share  options to our Non-Executive Directors. These  share options 
vested  over  three  years    from  grant    date    in  three  equal    annual  installments.  There  were  no  performance 
conditions attached to share  options granted under the 2015 Plan.

Under the 2019 NED EIP, we have  granted market value options to all Non-Executive directors and Deferred 
RSUs  ("DRSUs") to directors who elect to receive them instead of cash fees. These other share-based awards 
vest in equal monthly installments over the one-year period following their grant date.  There are no performance 
conditions attached to the other share-based awards granted under the 2019 NED EIP. Subject to the terms of 
the  grant,  awards  under  the  2019  NED  EIP  can  be  granted  in  respect  of  ordinary    shares,  ADSs,  cash  or  a 
combination thereof.  All grants to Non- Executive Directors since 2019 were in respect of ADSs.

2.6 Performance Graph and Table
The graph below shows the Company’s performance, measured by total shareholder return, relative  to the Nasdaq US 
Small Cap Biotechnology Index, which has been selected for this comparison because the Company has  been trading 
on the Nasdaq exchange since the date it became a quoted company for the purposes of the U.K. remuneration reporting 
regulations (in April 2019) and is therefore considered to be the most suitable comparator index.

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Chief Executive Officer Total Remuneration History
The Chief Executive Officer’s remuneration over the period since the Company’s listing on Nasdaq in April 2019 is set 
out below. This will eventually build up to cover a rolling ten-year remuneration history.

Total CEO remuneration (£)

2023
703,505

2022
726,360

2021
705,297

2020
867,888

2019
741,374

CEO bonus (as a % of maximum available)
CEO LTIP(1) vesting (as a % of maximum 
available)
(1) Awards of market value options were granted under the 2019 EIP Plan as an equity incentive to the CEO in 2023, 2022, 2021, 2020 and 2019. As the options granted 
in 2023, 2022, 2021, 2020 and 2019 are not subject to performance conditions the vesting percentage in respect of these awards has  been recorded as 100%. In 2023, 
PSUs were granted subject to performance conditions. These awards may vest at any point up to January 25, 2025, therefore their impact on the vesting percentage will 
be calculated in 2025 when the vesting period is completed. The percentage for 2023 is therefore in respect of the market value options only. 

100%

100%

100%

100%

100%

100%

81%

60%

75%

80%

2.7 Percentage Change in Remuneration of Directors and Employees
The following table  shows the  percentage change in  each   Executive and  Non-Executive Directors’ remuneration 
compared with the average change for all employees of the Company for the year ended December 31, 2023. Going 
forward, this disclosure will build up over time to cover a rolling five-year period.

Salary/
fee (%)

2023    
Benefits        
(%)

Annual
bonus
(%)

Salary/
fee (%)

2022    
Benefits        
(%)

Annual
bonus
(%)

Salary/
fee (%)

2021    
Benefits        
(%)

Annual
bonus
(%)

Salary/
fee (%)

2020    
Benefits        
(%)

Annual
bonus
(%)

Dr. Denise Scots-Knight
Dr. Jeremy Bender
Dr. Anders Ekblom
Mike Wyzga

Dr. Pierre Jacquet
Dr. Annalisa Jenkins (1)
Dr. Deepa Pakianathan
Justin Roberts (1)
Dr. Daniel Shames (1)
Marc Yoskowitz (1)

Average of all 
employees
(other than Directors)

6
(0)
8
11

15
541
16
—
504
428

7

(21)

5
17
19
62

293
—
3
—
—
—

3

36

2

5

—
1
(2)
24

—

3

(40)

2
—
—
—

—

(28)

(33)

(6)

29

(11)

—

1

30

8

2

6

(20)

(1)

Dr. Annalisa Jenkins, Justin Roberts, Dr. Daniel Shames and  Marc  Yoskowitz were appointed to the Board on November 10, 2022 – no prior year comparison 
available.  Mr. Roberts has waived all remuneration in respect of his appointment as a non-executive director.

2.8 Relative Importance of Spend on Pay
The  Remuneration  Committee  considers  the  Company’s  research  and  development  (“R&D”)  expenditure  relative  to 
salary expenditure for all employees, to be the most appropriate metric for assessing overall spend on pay due to the 
nature  and  stage  of  the  Company’s  business.  Dividend  distribution  and  share  buy-back  comparators  have  not  been 
included  because  the  Company  has  no  history  of  such  transactions.  The  table  below  illustrates  the  gross  pay  to  all 
employees, per year, as compared to R&D expenditure and illustrates the year-on-year change.

Gross pay to all employees
R&D expenditure

2023
£’000s
12,191
15,445

2022
£’000s
14,195
24,962

% change
(14)
(38)

2.9 External appointments
Dr. Denise Scots-Knight (CEO) is currently a Non-Executive Director of Elanco Animal Health Incorporated (“Elanco”) 
(NYSE: ELAN).

2.10 Membership of the Remuneration Committee and its Advisors
The Remuneration Committee is currently comprised of three independent Non-Executive Directors: Dr. Anders Ekblom  
(Chair), Dr. Deepa Pakianathan, and Justin Roberts.  The Chief Executive Officer, Chief Financial Officer and  General 

28

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

Counsel,  as well as others, are invited  to attend  Remuneration Committee meetings as required to provide advice and 
assistance. The terms of reference of the Committee can be found on our website at www.mereobiopharma.com.

During the year, the Committee  was  assisted in its work by FIT Remuneration Consultants LLP (“FIT”) and Compensia, 
Inc. (“Compensia”). FIT was  appointed in 2020 and has  provided  advice in relation  to general remuneration matters. 
Fees  paid  to FIT in relation  to advice provided  to the Committee  during  the year to December 31, 2023 were £6,456 
(excluding VAT) (2022: £11,169), charged on a time/cost basis. FIT did not provide any other services to the Company. 
FIT is a member  of the Remuneration Consultants Group and, as such,  voluntarily operates under the Code of Conduct 
in relation to executive remuneration consulting in the U.K. Compensia was  appointed in 2021  and  has  provided  
advice in relation  to general remuneration matters and did not provide any other services to the Company. Fees  paid  
to Compensia in relation to the advice provided to the Committee during the year were $67,606 (2022: $76,628). The 
Committee is satisfied that the advice they received from FIT and Compensia was objective and independent.

The Committee met three times during the year and addressed the following main  topics:

•

•

•

•

•

•

•

Reviewed and approved the remuneration package of our CEO and direct reports of the CEO;

Approved the annual bonus payments to the CEO in 2023 and the annual bonus plan for the 2023 financial 
year;

Reviewed and  approved the number  of shares available for grant  under the 2019 EIP plans;

Reviewed and approved the grant of market value options and PSUs to the CEO and to employees at 
seniority level SVP and above under the Company's 2019 Equity Incentive Plan;

Approved the delegation of authority from the Committee to the CEO in respect of the grant of options and 
RSUs to employees at seniority level of VP and below;

Reviewed  and  approved  the  grant  of  market  value  options  and  DRSUs  under  the  Company’s  2019  Non-
Employee Equity Incentive Plan;

Reviewed and recommended the following policies for approval by the Board of Directors: i) the proposed 
new  Policy for Recovery of Erroneously Awarded Compensation (the “Clawback Policy”), intended to satisfy 
the Nasdaq listing rules; ii) the amended Remuneration Committee Terms of Reference to comply with the 
rules  and  regulations  of  the  SEC  applicable  to  U.S.  domestic  filers;  and  iii)  the  amended  Deferred 
Compensation Plan for Non-Employee Directors. 

2.11 Statement of Voting at a general meeting of the Company
The shareholder votes on the non-binding approval of the Directors’ Remuneration Report and the binding approval of 
the Directors’ Remuneration Policy at the Annual General Meeting which took place on May 22, 2023 was as follows:

Resolution
Approval of the Directors’ 
Remuneration Report
Approval of the Directors’ 
Remuneration Policy

Votes for

% for

Votes against
(excluding
withheld)

% against

Total
(excluding
withheld)

Withheld

288,674,726

87.48%

41,332,110

12.52% 330,006,836

668,420

276,586,051

83.81%

53,425,295

16.19% 330,011,346

653,910

2.12 Statement of Implementation of Remuneration Policy for the Year Ending December 31, 2024

Annual salary
For 2024, the CEO was granted a 4.5% increase in annual salary.

Benefits and pension
The CEO will continue to receive pension contributions (or cash payments in lieu) to the value of 10% of basic salary. 
No changes will be made  to the provision of other benefits.

Bonus
The CEO will be eligible for an annual bonus of 60% of basic salary for achievement of target  level or no higher than 
75% of basic salary for achievement of stretch goals for the 2024 financial year.

The bonus will be subject to the achievement of short-term performance targets which will be set by the Committee with 
respect to the 2024 performance period. The performance targets will cover key objectives that relate to the achievement 

MEREO BIOPHARMA GROUP PLC
DIRECTORS’ REMUNERATION REPORT

of  the  Group’s  wider  strategic  goals  including,  for  2024,  measures  relating  to  clinical  development,  corporate 
development, commercial planning, finance, manufacturing and intellectual property/legal.

The amount of bonus payable is at the discretion of the Committee subject to review of performance against the short-
term performance targets at the end of the performance period (which is aligned with the financial year).

The Committee has chosen not to disclose, in advance, the detailed performance targets for the forthcoming year  as 
these  include  matters  which  the  Committee  considers  commercially  sensitive.  Retrospective  disclosure  of  the 
performance against the corporate objectives will be made in next year’s Annual Report on Remuneration to the extent 
any such disclosure is considered not to be commercially sensitive at that time.

Long-term incentive plan
In line with the approved Policy, the Committee has issued market value options to the CEO during 2024.

On January 25, 2024, equity incentive awards were granted to the Chief Executive Officer under the 2019 EIP. These 
equity incentive awards included market value  options over ADSs. The market value  options over ADSs have a vesting 
period over four years, with 25% of the award  vesting on the first anniversary of the grant  date and  the balance vesting 
in equal monthly installments over the following three years; no performance conditions were attached to the awards. 

Dr. Denise Scots-Knight

ADS options
granted
850,000

Exercise
Price
per ADS
($)
3.36
(a)

Face value
($)
2,856,000
(a)

Non-Executive Directors’ fees
Non-Executive Directors may voluntarily elect to convert their annual cash fees into DRSUs (over ADSs) that are then 
held until settlement, generally 180 days following separation of service. This Deferred Compensation Plan is delivered  
under the terms of the 2019 Non-Executive Equity Incentive Plan.

In addition to annual cash fees or DRSUs, as elected, on February 8, 2024, equity incentive awards were granted to 
Non-Executive Directors in line with the 2019 NED EIP. A total of 45,000 equity incentive awards in the form of market 
value  options over ADSs, were granted to each  Non-Executive Director at an exercise price of $3.87 per ADS, with a 
vesting  period  of  one  year;  vesting  is  in  equal  monthly  installments  over  the  plan  year  following  grant  date.  No 
performance conditions were attached to the awards.

Mr. Roberts has waived all remuneration in respect  of his appointment as a Non-Executive Director. 

This directors’ remuneration report has been approved by the Board and signed on behalf of the Board,

Dr. Anders Ekblom
Director

April  25, 2024

30

MEREO BIOPHARMA GROUP PLC
DIRECTORS' REPORT

The Directors present their report together with the audited financial statements for the year ended December 31, 2023.

Principal activities
The  Strategic  Report  on  pages  3  to  20  describes  the  Group’s  principal  development  activities,  strategy  and  future 
developments.

Results and dividends
The Group recorded a total comprehensive loss for the year attributable to equity holders of the parent of £31.3 million 
(2022: £35.0 million). Further details are given in the Strategic Report and in the consolidated financial statements.

The Directors do not recommend payment of a dividend.

Research and development
For the financial year ended December 31, 2023, the Group spent £15.4 million (2022: £25.0 million) on research and 
development activity.

Research and development spend primarily reflects the underlying activity on clinical trials for our product candidates 
as well as the manufacturing of drug products together with the internal costs, including payroll directly attributable to 
these activities. Further details of our product programs and research and development spend can be found within the 
Strategic Report.

Directors
The directors of the Company who held office during the year and up to the date of this report, unless otherwise noted, 
were:

Executive directors
Dr. Denise Scots-Knight (Chief Executive Officer)

Non-executive directors
Michael Wyzga (Chairman)
Dr. Jeremy Bender
Dr. Anders Ekblom
Dr. Pierre Jacquet
Dr. Annalisa Jenkins
Dr. Deepa Pakianathan
Justin Roberts
Dr. Daniel Shames
Marc Yoskowitz

As at the date of this report, the Directors held shares representing 14.6% of the equity of the Company. Details of the 
Directors’ shareholdings and their options over shares in the Company are disclosed in the Directors’ Remuneration 
Report on pages 21  to 30.

Information on environmental matters
The Company is required to measure and report its greenhouse gas emissions. This information is outlined in the “Social 
and environmental matters” section of the Strategic Report on page 18.

MEREO BIOPHARMA GROUP PLC
DIRECTORS' REPORT

Future developments
Details of future developments can be found in the Strategic Report on pages 3 to 20 and form part of this report by 
cross-reference.

Post-balance sheet events
There are no post-balance sheet events to be reported.

Going concern
The going concern basis has  been applied in these consolidated financial statements as the Company has adequate 
resources to meet its liabilities as they fall due for the foreseeable future and at least 12 months from the date of approval 
of these consolidated financial statements.

The Company expects to incur significant operating losses for the foreseeable future as it continues its research and 
development  efforts,  seeks  to  obtain  regulatory  approval  of  its  product  candidates  and  pursues  any  future  product 
candidates the Company may develop.

Until such time as the Company can generate significant revenue from product sales, or other commercial revenues, if 
ever, or through licensing and/or collaboration agreements for its rare disease and  oncology product candidates, the 
Company will seek  to  finance its operations through  a combination of  non-dilutive funding sources, public or private 
equity or debt financings or other sources.

As of December 31, 2023, the Company has  cash and short-term deposits available of £45.1 million.

The Directors have prepared detailed cash flow forecasts for the period from approval of these consolidated financial 
statements to December 31, 2025. The Directors have considered the continuing economic uncertainty, rises in inflation, 
and impacts on the labor market on these forecasts.

The Company’s existing funds provide the Company with sufficient cash resources to meet its liabilities as they fall due 
and for the period through December 31, 2025. Therefore, although the Company continues to generate losses, the 
Directors consider that there is sufficient headroom between the forecast expenditure and cash resources such that the 
likelihood of the headroom being exhausted is remote. Therefore, the Directors determined that it is appropriate to adopt 
the going concern basis of accounting in preparing these consolidated financial statements.

Financial risk management objectives and policies (including information on exposure to price risk, credit risk, 
liquidity risk and cash flow risk)
Refer to Note 23 of the financial statements for further details on our financial risk management objectives and policies.

Health and safety
The Directors are committed to ensuring the highest standards of health and safety, both for their employees and for 
the communities within which the Group operates.

Political contributions
Neither the Company nor any of its subsidiaries made any political donations or incurred any political expenditure during 
the years ended December 31, 2023 and December 31, 2022.

Share capital
As at the date of this report, the Company had total issued and fully paid up share capital of £2,104,073 representing 
701,357,759 ordinary shares of £0.003, all of which rank pari passu. Each share carries the right to one vote at general 
meetings of the Company. No shareholder holds shares carrying special rights with regard to control of the Company.

The Company’s ADSs are traded on the Nasdaq Capital Market under the symbol “MREO”. Each ADS represents five 
ordinary shares.

32

MEREO BIOPHARMA GROUP PLC
DIRECTORS' REPORT

Purchases of own shares during the year
The  Company’s  Employee  Benefit  Trust  (“EBT”)  was  established  for  the  purpose  of  holding  ordinary  shares 
(subsequently  ADSs)  to  satisfy  the  exercise  of  options  for  employees  under  the  Company’s  share-based  incentive 
schemes. There were no loans made to the EBT by the Company during the year ended December 31, 2023 (2022: 
nil). During the year ended December 31, 2023, no ordinary shares were purchased by the EBT (2022: nil). A total of 
15,926 ADSs held by the EBT were used in the year-ended December 31, 2023 to satisfy the exercise of options under 
the Company’s share-based incentive schemes (2022: 15,645). As of December 31, 2023, the EBT holds 184,680 ADSs 
(2022: 206,606) along with £17,241 in cash (2022: £17,741).

Branches outside the U.K.
As at December 31, 2023, the Group consists of certain subsidiaries which are incorporated outside the United Kingdom. 
Further information can  be found in Note 5 of the financial statements. There are no branches of the Company outside 
the United Kingdom.

Annual general meeting (“AGM”)
The  AGM  of  the  Company  is  anticipated  to  be  held  on  May  23,  2024.  The  notice  of  the  meeting,  together  with  an 
explanation of the business to be dealt with including proposed resolutions, will be prepared as a separate document 
and distributed to shareholders and posted on our website.

Disclosure of information to the Auditors
Each of the persons who is a director at the date of approval of this report confirms that:

•

•

So far as the director is aware, there is no relevant audit information of which  the Group’s Auditors are unaware; 
and

The director has taken all the steps that they ought to have taken as a director in order to make themselves aware 
of any relevant audit information and to establish that the Group’s Auditors are aware of that information.

Independent auditors
On  September  20,  2023,  the  Company's  Board  of  Directors,  following  the  recommendation  of  the  Audit  and  Risk 
Committee,  dismissed  BDO  LLP  (“BDO”)  as  its  independent  auditors  and  appointed  PricewaterhouseCoopers  LLP 
(United Kingdom) (“PwC”) as its new independent auditors effective immediately. PwC have indicated their willingness 
to continue in office and a resolution concerning their re-appointment will be proposed at the forthcoming AGM.

Directors’ and officers’ liability insurance
The Company has, as permitted by the Companies Act 2006, purchased and maintained throughout the financial year 
suitable insurance cover on behalf of the directors, indemnifying them against certain liabilities which may be incurred 
by them in relation to the Group. We have also entered into a deed of indemnity with each  of our directors as permitted 
by the Companies Act 2006 and with each of our executive officers.

Effective date
This report was approved by the Board of Directors on April 24, 2024 and signed on its behalf by:

Michael Wyzga
Chairman

April 25, 2024

Charles Sermon
General Counsel and Company Secretary

April 25, 2024

 
MEREO BIOPHARMA GROUP PLC
STATEMENT OF DIRECTORS' RESPONSIBILITIES

The Directors are responsible for preparing the annual report and the financial statements in accordance with applicable 
law and regulation.

Company law requires the directors to prepare financial statements for each financial year. Under that law the directors 
have  prepared  the  Group  and  the  Company  financial  statements  in  accordance  with  UK-adopted  International 
Accounting Standards and with the requirements of the Companies Act 2006 as applicable to companies reporting under 
those standards. The directors have also chosen to prepare the parent company financial statements in accordance 
with FRS 101 “Reduced Disclosure Framework". 

Under company law, directors must not approve the financial statements unless they are satisfied that they give a true 
and fair view of the state of affairs of the group and company and of the profit or loss of the group for that period. In 
preparing the financial statements, the directors are required to:

•

•

•

•

select suitable accounting policies and then apply them consistently;

state whether applicable United Kingdom Accounting Standards, comprising FRS 101, have been followed, 
subject to any material departures disclosed and explained in the financial statements;

make judgments and accounting estimates that are reasonable and prudent; and

prepare the financial statements on the going concern basis unless it is inappropriate to presume that the 
group and company will continue in business.

The directors are responsible for safeguarding the assets of the Group and Company and hence for taking reasonable 
steps for the prevention and detection of fraud and other irregularities.

The directors are also responsible for keeping adequate accounting records that are sufficient to show and explain the 
Group’s and Company’s transactions and disclose with reasonable accuracy at any time the financial position of the 
Group and Company and enable them to ensure that the financial statements and the Directors’ Remuneration Report 
comply with the Companies Act 2006.

The  directors  are  responsible  for  the  maintenance  and  integrity  of  the  Company’s  website.  Legislation  in  the  United 
Kingdom  governing  the  preparation  and  dissemination  of  financial  statements  may  differ  from  legislation  in  other 
jurisdictions.

Directors’ confirmations

In the case of each director in office at the date the directors’ report is approved:

•

•

so far as the director is aware, there is no relevant audit information of which the Group’s and Company’s 
auditors are unaware; and

they have taken all the steps that they ought to have taken as a director in order to make themselves aware 
of any relevant audit information and to establish that the Group’s and Company’s auditors are aware of that 
information.

On behalf of the Board: 

Charles Sermon
General Counsel and Company Secretary

April 25, 2024

34

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

Independent auditors’ report to the members of Mereo 
BioPharma Group plc

Report on the audit of the financial statements

Opinion
In our opinion:

•

•

•

•

Mereo BioPharma Group plc’s group financial statements and company financial statements (the “financial statements”) give a 
true and fair view of the state of the group’s and of the company’s affairs as at 31 December 2023 and of the group’s loss and 
the group’s cash flows for the year then ended;

the group financial statements have been properly prepared in accordance with UK-adopted international accounting standards 
as applied in accordance with the provisions of the Companies Act 2006;

the  company  financial  statements  have  been  properly  prepared  in  accordance  with  United  Kingdom  Generally  Accepted 
Accounting  Practice  (United  Kingdom  Accounting  Standards,  including  FRS  101  “Reduced  Disclosure  Framework”,  and 
applicable law); and

the financial statements have been prepared in accordance with the requirements of the Companies Act 2006.

We  have  audited  the  financial  statements,  included  within  the  Annual  Report  and  Accounts  (the  “Annual  Report”),  which  comprise:  the 
consolidated  balance  sheet  and  company  balance  sheet  as  at  31 December 2023;  the  consolidated  statement  of  comprehensive 
(loss)/income, the consolidated statement of cash flows, the consolidated statement of changes in equity, and the company statement of 
changes in equity for the year then ended; and the notes to the financial statements, comprising material accounting policy information and 
other explanatory information.

Basis for opinion
We conducted our audit in accordance with International Standards on Auditing (UK) (“ISAs (UK)”) and applicable law. Our responsibilities 
under ISAs (UK) are further described in the Auditors’ responsibilities for the audit of the financial statements section of our report. We believe 
that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.

Independence
We remained independent of the group in accordance with the ethical requirements that are relevant to our audit of the financial statements 
in the UK, which includes the FRC’s Ethical Standard, as applicable to listed entities, and we have fulfilled our other ethical responsibilities 
in accordance with these requirements.

Our audit approach

Context
Mereo BioPharma Group plc is a public listed company incorporated under the laws of England and Wales and  listed on the NASDAQ.

Overview
Audit scope

•

•

•

•

The group's headquarters are in the United Kingdom which is also the location of management.

The company has six directly owned subsidiaries and two indirectly owned subsidiaries. Three subsidiaries are dormant entities.

We identified two significant components of the group: the company and its four UK based operating subsidiaries; and the US 
based operating subsidiary. We performed a full scope audit of these two significant components due to their size and risk.

Taken together, these significant components and the consolidation adjustments, over which we performed audit procedures, 
accounted for 100% of the loss before tax of the group. Our audit scope provided sufficient, appropriate, audit evidence as a 
basis for our opinion on the group financial statements.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

Key audit matters

•

•

Materiality

•

•

•

Recoverability of intangible assets (group)

Recoverability of investments in subsidiaries (company)

Overall group materiality: £1,742,000 based on 5% of adjusted loss before tax.

Overall company materiality: £2,145,000 based on 1% of total assets.

Performance materiality: £1,306,000 (group) and £1,608,000 (company).

The scope of our audit
As part of designing our audit, we determined materiality and assessed the risks of material misstatement in the financial statements.

Key audit matters
Key audit matters are those matters that, in the auditors’ professional judgement, were of most significance in the audit of the financial 
statements of the current period and include the most significant assessed risks of material misstatement (whether or not due to fraud) 
identified by the auditors, including those which had the greatest effect on: the overall audit strategy; the allocation of resources in the audit; 
and directing the efforts of the engagement team. 

These matters, and any comments we make on the results of our procedures thereon, were addressed in the context of our audit of the 
financial statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on these matters.

This is not a complete list of all risks identified by our audit.

Key audit matter
Recoverability of intangible assets (group)

As disclosed in Notes 13 and 14 to the group financial statements, as at 
31 December 2023, the group holds intangible assets for acquired 
development programs with a net book value of £11.1m. Management 
has forecast the cash flows for each acquired development program 
which separately support each intangible asset.

Management's impairment assessments are performed through a 
separate value in use model for each development program, which 
contain certain key assumptions, such as: drug pricing, market 
penetration and probability of success, which required significant 
attention and, for drug pricing and market penetration the involvement 
of specialists, as part of our audit.

Management has assessed the recoverability of each intangible asset 
under IAS 36, Impairment of Assets, and concluded that the value in 
use of each intangible was higher than its carrying amount, such that no 
impairment of intangibles was required.

How our audit addressed the key audit matter

We performed the following procedures to address the key 
audit matter:

- We assessed the design and implementation of 
management's controls over impairment assessments;

- We evaluated the completeness and accuracy of 
management's impairment calculations, including the 
underlying data used;

- We obtained audit evidence for those assumptions we 
identified as key assumptions in each model, such as: drug 
pricing, market penetration and probability of success, and 
assessed the reasonableness of management's 
assumptions. Furthermore, we involved specialists in the 
audit of drug pricing and market penetration assumptions; 
and

- We evaluated the sufficiency of the disclosure in Notes 13 
and 14 to the group's financial statements.

Based on the work performed, we conclude that 
management's impairment assessments support the 
carrying values of each intangible asset and are 
appropriately disclosed.

36

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

Recoverability of investments in subsidiaries (company)

As disclosed in Note 4 to the company's financial statements, as at 31 
December 2023, the company holds investments in its subsidiaries 
which total £164.9 million. Each development program is held in an 
individual subsidiary and the value of the company's investments is 
therefore supported by the forecast cash flows of the development 
program held in each subsidiary.

We performed the following procedures to address the key 
audit matter:

- We assessed the design and implementation of 
management's controls over impairment assessments;

In forming their assessment of impairment triggering events, 
management considered: the progress of each drug program, external 
market indicators (such as the group's market capitalisation), and any 
contradictory evidence identified in the individual drug program value in 
use calculations maintained by management. Management was 
required to exercise judgement in concluding that no impairment 
triggers were identified beyond the derecognition of Leflutrozole and 
this therefore required significant attention as part of our audit.

Management has assessed the recoverability of each investment in 
subsidiaries under IAS 36, Impairment of Assets, and having 
derecognised the Leflutrozole development program asset in the year 
due to its out-licensing, management concluded that a full impairment of 
£14.3 million in the investment in the relevant subsidiary was required, 
because the associated cash flows no longer supported the carrying 
value of the subsidiary. Management identified no other impairment 
triggering events in the period related to the other investments.

- We evaluated external factors which could be indicative of 
an impairment such as: analyst expectations and the group's 
market capitalisation, and also assessed based on our 
knowledge of the business the progress of the drug 
programs;

- We evaluated the completeness of management's 
impairment trigger assessment; and

- We evaluated the sufficiency of the disclosure in Note 4 to 
the company's financial statements.

Based on the work performed, we conclude that the carrying 
values at which the investments in subsidiaries are 
recognised are appropriate.

How we tailored the audit scope
We tailored the scope of our audit to ensure that we performed enough work to be able to give an opinion on the financial statements as a 
whole, taking into account the structure of the group and the company, the accounting processes and controls, and the industry in which they 
operate.

The group comprises nine companies, of which six are operational. We identified a UK component, comprising five of these companies, 
including  the  parent  company,  and  a  US  component  comprising  the  remaining  company.  A  full  scope  audit  was  performed  over  each 
component, through which we obtained coverage over 100% of group balances.

We did not utilise component auditors in our audit of the group and our procedures were solely carried out at the group's head office.

The impact of climate risk on our audit
As part of our audit we made enquiries of management to understand the extent of the potential impact of climate risk on the  group’s and 
company’s financial statements, and we remained alert when performing our audit procedures for any indicators of the impact of climate 
risk. Our procedures did not identify any material impact as a result of climate risk on the group’s and company’s financial statements.

Materiality
The scope of our audit was influenced by our application of materiality. We set certain quantitative thresholds for materiality. These, together 
with qualitative considerations, helped us to determine the scope of our audit and the nature, timing and extent of our audit procedures on 
the individual financial statement line items and disclosures and in evaluating the effect of misstatements, both individually and in aggregate 
on the financial statements as a whole.

Based on our professional judgement, we determined materiality for the financial statements as a whole as follows:

Overall materiality
How we determined it
Rationale for benchmark 
applied

Financial statements - group
£1,742,000.
5% of adjusted loss before tax
Based on the benchmarks used in the Annual Report and 
Accounts, adjusted loss before tax is the primary measure 
used by the stakeholders of the group to measure its 
financial performance and is a generally accepted 
auditing benchmark. We have adjusted this to remove the 
effect of fair value gains as they are not representative of 
the group's underlying activities and can vary significantly 
period over period.

Financial statements - company
£2,145,000.
1% of total assets
Based on the benchmarks used in the 
Annual Report and Accounts, total assets is 
the primary measure used by the 
stakeholders of the company to measure its 
financial performance and is a generally 
accepted auditing benchmark for holding 
companies.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

For each component in the scope of our group audit, we allocated a materiality that is less than our overall group materiality. The range of 
materiality allocated across components was between £630,000 and £1,260,000. Certain components were audited to a local statutory audit 
materiality that was also less than our overall group materiality.

We use performance materiality to reduce to an appropriately low level the probability that the aggregate of uncorrected and undetected 
misstatements exceeds overall materiality. Specifically, we use performance materiality in determining the scope of our audit and the nature 
and  extent  of  our  testing  of  account  balances,  classes  of  transactions  and  disclosures,  for  example  in  determining  sample  sizes.  Our 
performance materiality was 75% of overall materiality, amounting to £1,306,000 for the group financial statements and £1,608,000 for the 
company financial statements.

In  determining  the  performance  materiality,  we  considered  a  number  of  factors  -  the  history  of  misstatements,  risk  assessment  and 
aggregation risk and the effectiveness of controls - and concluded that an amount at the upper end of our normal range was appropriate.

We agreed with those charged with governance that we would report to them misstatements identified during our audit above £87,000 (group 
audit) and £107,000 (company audit) as well as misstatements below those amounts that, in our view, warranted reporting for qualitative 
reasons.

Conclusions relating to going concern
Our evaluation of the directors’ assessment of the group's and the company’s ability to continue to adopt the going concern basis of accounting 
included:

•

•

•

•

Testing the mathematical accuracy of the cash flow forecast and reconciling this to the Board approved budget;

Assessing the completeness and accuracy of the data used in the cash flow forecast, including whether any additional risks not 
considered by management exist based on our understanding of the group, company and industry;

Evaluating management's assessment of key assumptions contained within the cash flow forecasts; and

Evaluating the sufficiency of the disclosure in Note 2 to the group's financial statements.

Based on the work we have performed, we have not identified any material uncertainties relating to events or conditions that, individually or 
collectively, may cast significant doubt on the group's and the company’s ability to continue as a going concern for a period of at least twelve 
months from when the financial statements are authorised for issue.

In auditing the financial statements, we have concluded that the directors’ use of the going concern basis of accounting in the preparation 
of the financial statements is appropriate.

However, because not all future events or conditions can be predicted, this conclusion is not a guarantee as to the group's and the company's 
ability to continue as a going concern.

Our responsibilities and the responsibilities of the directors with respect to going concern are described in the relevant sections of this report.

Reporting on other information
The  other  information  comprises  all  of  the  information  in  the  Annual  Report  other  than  the  financial  statements  and  our  auditors’  report 
thereon. The directors are responsible for the other information. Our opinion on the financial statements does not cover the other information 
and, accordingly, we do not express an audit opinion or, except to the extent otherwise explicitly stated in this report, any form of assurance 
thereon.

In connection with our audit of the financial statements, our responsibility is to read the other information and, in doing so, consider whether 
the other information is materially inconsistent with the financial statements or our knowledge obtained in the audit, or otherwise appears to 
be materially misstated. If we identify an apparent material inconsistency or material misstatement, we are required to perform procedures to 
conclude whether there is a material misstatement of the financial statements or a material misstatement of the other information. If, based 
on the work we have performed, we conclude that there is a material misstatement of this other information, we are required to report that 
fact. We have nothing to report based on these responsibilities.

With respect to the Strategic report and Directors’ Report, we also considered whether the disclosures required by the UK Companies Act 
2006 have been included.
Based on our work undertaken in the course of the audit, the Companies Act 2006 requires us also to report certain opinions and matters as 
described below.

38

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

Strategic report and Directors’ Report
In our opinion, based on the work undertaken in the course of the audit, the information given in the Strategic report and Directors’ Report for 
the year ended 31 December 2023 is consistent with the financial statements and has been prepared in accordance with applicable legal 
requirements.

In light of the knowledge and understanding of the group and company and their environment obtained in the course of the audit, we did not 
identify any material misstatements in the Strategic report and Directors’ Report.

Directors' Remuneration
In our opinion, the part of the Directors’ Remuneration Report to be audited has been properly prepared in accordance with the Companies 
Act 2006.

Responsibilities for the financial statements and the audit

Responsibilities of the directors for the financial statements
As  explained  more  fully  in  the  Statement  of  Directors’  Responsibilities,  the  directors  are  responsible  for  the  preparation  of  the  financial 
statements in accordance with the applicable framework and for being satisfied that they give a true and fair view. The directors are also 
responsible  for  such  internal  control  as  they  determine  is  necessary  to  enable  the  preparation  of  financial  statements  that  are  free  from 
material misstatement, whether due to fraud or error.

In preparing the financial statements, the directors are responsible for assessing the group’s and the company’s ability to continue as a going 
concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless the directors 
either intend to liquidate the group or the company or to cease operations, or have no realistic alternative but to do so.

Auditors’ responsibilities for the audit of the financial statements
Our objectives are to obtain reasonable assurance about whether the financial statements as a whole are free from material misstatement, 
whether due to fraud or error, and to issue an auditors’ report that includes our opinion. Reasonable assurance is a high level of assurance, 
but  is  not  a  guarantee  that  an  audit  conducted  in  accordance  with  ISAs  (UK)  will  always  detect  a  material  misstatement  when  it  exists. 
Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected 
to influence the economic decisions of users taken on the basis of these financial statements.

Irregularities,  including  fraud,  are  instances  of  non-compliance  with  laws  and  regulations.  We  design  procedures  in  line  with  our 
responsibilities,  outlined  above,  to  detect  material  misstatements  in  respect  of  irregularities,  including  fraud.  The  extent  to  which  our 
procedures are capable of detecting irregularities, including fraud, is detailed below.

Based on our understanding of the group and industry, we identified that the principal risks of non-compliance with laws and regulations 
related to tax legislation and the Companies Act 2006, and we considered the extent to which non-compliance might have a material effect 
on the financial statements. We evaluated management’s incentives and opportunities for fraudulent manipulation of the financial statements 
(including the risk of override of controls), and determined that the principal risks were related to the misappropriation of cash and manipulation 
of the cash runway disclosure contained within Note 2 of the group financial statements. Audit procedures performed by the engagement 
team included:

•

•

•

•

•

Inquiries  of  management  and  the  Audit  and  Risk  Committee  regarding  their  knowledge  of  actual  or  suspected  fraud  in  the 
business;

Identifying and testing journals based on our risk assessment and evaluating whether there was evidence of management bias 
that represents a material misstatement due to fraud;

Post period end confirmation of a particular cash balance;

Consideration of assumptions and judgements made by management in their significant accounting estimates and judgements; 
and

Incorporating elements of unpredictability into the audit procedures performed.

There are inherent limitations in the audit procedures described above. We are less likely to become aware of instances of non-compliance 
with laws and regulations that are not closely related to events and transactions reflected in the financial statements. Also, the risk of not 
detecting a material misstatement due to fraud is higher than the risk of not detecting one resulting from error, as fraud may involve deliberate 
concealment by, for example, forgery or intentional misrepresentations, or through collusion.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: INDEPENDENT AUDITORS’ REPORT

Our audit testing might include testing complete populations of certain transactions and balances, possibly using data auditing techniques. 
However, it typically involves selecting a limited number of items for testing, rather than testing complete populations. We will often seek to 
target particular items for testing based on their size or risk characteristics. In other cases, we will use audit sampling to enable us to draw a 
conclusion about the population from which the sample is selected.

A  further  description  of  our  responsibilities  for  the  audit  of  the  financial  statements  is  located  on  the  FRC’s  website  at: 
www.frc.org.uk/auditorsresponsibilities. This description forms part of our auditors’ report.

Use of this report
This report, including the opinions, has been prepared for and only for the company’s members as a body in accordance with Chapter 3 of 
Part 16 of the Companies Act 2006 and for no other purpose. We do not, in giving these opinions, accept or assume responsibility for any 
other purpose or to any other person to whom this report is shown or into whose hands it may come save where expressly agreed by our 
prior consent in writing.

Other required reporting

Companies Act 2006 exception reporting
Under the Companies Act 2006 we are required to report to you if, in our opinion:

•

•

•

•

we have not obtained all the information and explanations we require for our audit; or

adequate accounting records have not been kept by the company, or returns adequate for our audit have not been received 
from branches not visited by us; or

certain disclosures of directors’ remuneration specified by law are not made; or

the company financial statements and the part of the Directors’ Remuneration Report to be audited are not in agreement with 
the accounting records and returns.

We have no exceptions to report arising from this responsibility.

Simon Ormiston (Senior Statutory Auditor)
for and on behalf of PricewaterhouseCoopers LLP
Chartered Accountants and Statutory Auditors
Reading

25 April 2024

40

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: CONSOLIDATED STATEMENT OF COMPREHENSIVE (LOSS)/INCOME

Revenue
Cost of revenue
Research and development expenses
Administrative expenses
Operating loss
Finance income
Finance costs
Changes in the fair value of financial instruments
Net foreign exchange (loss)/gain
Gain/(loss) on disposal of intangible assets
Other income and expenses
Loss before tax
Taxation
Loss for the year, attributable to equity holders of the parent
Items that may be reclassified subsequently to profit or loss:
Currency translation of foreign operations (net of tax)
Total comprehensive loss for the year, attributable to equity 
holders of the parent
Basic loss per share for the year (in £)
Diluted loss per share for the year (in £)

Note

6
6

9
9
9

9
7
10

11
11

Year ended December 31,

2023

£'000s

7,914
(11,935)
(15,445)
(13,502)
(32,968)
1,710
(1,642)
207
(2,000)
—
46
(34,647)
1,465
(33,182)

2022
Restated*
£'000s

—
936
(24,962)
(19,543)
(43,569)
696
(2,910)
7,805
2,033
—
811
(35,134)
1,897
(33,237)

1,845

(1,828)

(31,337)
(0.05)
(0.05)

(35,065)
(0.06)
(0.06)

The accompanying notes form an integral part of these consolidated financial statements.

* See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: CONSOLIDATED BALANCE SHEET

Assets
Non-current assets
Property, plant and equipment
Intangible assets

Current assets
Prepayments
R&D tax credits
Other taxes receivable
Other receivables
Trade receivables
Cash and short-term deposits

Total assets
Equity and liabilities
Non-current liabilities
Provisions
Convertible loan notes
Warrant liability
Lease liability
Other liabilities

Current liabilities
Trade and other payables
Accruals
Current tax liabilities
Provisions
Convertible loan notes
Warrant liability
Lease liability
Other liabilities

Note

12
13

10
10
15

16

18
20
19
12

17

18
20
19
12
6

2023

Year ended December 31,
2022
Restated*
£'000s

£'000s

1,295
11,126
12,421

1,440
929
—
2,609
—
45,102
50,080
62,501

—
3,916
324
711
599
5,550

1,831
20,156
21,987

3,125
1,296
614
762
—
56,334
62,131
84,118

—
—
129
1,222
—
1,351

January 1,
2021
Restated*
£'000s

2,530
20,156
22,686

2,799
—
809
1,419
—
94,296
99,323
122,009

—
14,384
8,336
1,754
80
24,554

2,084
4,292
—
196
—
—
512
560
7,644
13,194
49,307

3,078
4,491
—
188
11,085
402
466
515
20,225
21,576
62,542

2,499
3,826
1,522
—
—
—
622
1,269
9,738
34,292
87,717

Total liabilities
Net assets
Equity
Issued capital
Share premium
Other capital reserves
Employee Benefit Trust shares
Other reserves
Accumulated losses
Translation reserve
Total equity
The accompanying notes form an integral part of these consolidated financial statements.
* See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.
The financial statements on pages 41 to 44 were approved by the Board of Directors on April  24, 2024 and signed on its behalf by:
Dr. Denise Scots-Knight (Director)
April  25, 2024
Company number:  09481161 (England and Wales)

1,875
254,303
131,348
(1,058)
7,401
(329,158)
(2,169)
62,542

2,104
267,770
135,670
(974)
7,401
(362,340)
(324)
49,307

21
21
21

21

1,755
247,460
128,503
(1,140)
7,401
(295,921)
(341)
87,717

42

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: CONSOLIDATED STATEMENT OF CASH FLOWS

Operating activities
Loss before tax
Adjustments to reconcile (loss)/profit before tax to net cash flows:
Depreciation of property, plant and equipment
Amortization of intangible assets
Share-based payments expense
Change in fair value of warrants
Net foreign  exchange loss/(gain)
Finance income
Finance costs
Other non-cash movements
Loss on out-license of intangible asset
Other income  and expenses
Changes in operating assets and liabilities:
Decrease/(increase) in receivables and prepayments
Decrease/(increase) in trade and other payables and accruals
Increase/(decrease) in provisions and other liabilities
Taxation
Net cash flows used in operating activities
Investing activities
Purchase of property, plant and equipment
(Proceeds from out-license)/ Purchase of intangible assets
Payments to CVR holders
Interest earned
Net cash flows from investing activities
Financing activities
Proceeds from issuance of ordinary shares
Transaction costs on issuance of ordinary shares
Proceeds from financing agreements
Interest paid on convertible loan notes
Payment of lease liabilities
Transaction costs on conversion of convertible loan notes
Redemption of convertible loan notes
Net cash flows from/(used in) financing activities
Net decrease in cash and short-term deposits
Cash and short-term deposits at January 1
Effect of exchange rate changes
Cash and short-term deposits at December 31

Note

12
13
25
9

9
9

9

12
13
9
9

22

12

2023

Year ended December 31,
2022
Restated*
£’000s

£’000s

(34,647)

(35,134)

536
311
3,991
(207)
2,000
(1,710)
1,627
—
9,886
—

627
(1,095)
(24)
1,075
(17,630)

—
(337)
—
1,628
1,291

9,335
(411)
80
(711)
(611)
(26)
(2,564)
5,092
(11,247)
56,334
15
45,102

727
—
3,862
(7,805)
(2,033)
(696)
2,910
647
—
(811)

695
1,126
(779)
(1,529)
(38,820)

(10)
1,484
(673)
696
1,497

—
—
153
—
(937)
—
—
(784)
(38,107)
94,296
145
56,334

The accompanying notes form an integral part of these consolidated financial statements.

* See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: CONSOLIDATED STATEMENT OF CHANGES IN EQUITY

Notes

4

25

20, 22
21

25

20, 22
21

Issued
capital
1,755

1,755
—
—
—
—
—
120
—
1,875
—
—
—
—
2
—
145
82
—
2,104

Other
capital
reserves

Share

premium (Restated*)
129,835
247,460
(1,332)
128,503
—
—
—
3,862
(82)
(1,005)
70
131,348
—
—
—
3,991
—
(84)
—
374
41
135,670

247,460
—
—
—
—
—
6,843
—
254,303
—
—
—
—
—
—
8,778
4,689
—
267,770

Employee
Benefit
Trust
shares
(1,140)

Other
reserves
7,401

(1,140)
—
—
—
—
82
—
—
(1,058)
—
—
—
—
—
84
—
—
—
(974)

7,401
—
—
—
—
—
—
—
7,401
—
—
—
—
—
—
—
—
—
7,401

Accumulated
losses

(Restated*)
(296,968)
1,047
(295,921)
(33,237)
—
(33,237)
—
—
—
—
(329,158)
(33,182)
—
(33,182)
—
—
—
—
—
—
(362,340)

Translation
reserves
(341)

(341)
—
(1,828)
(1,828)
—
—
—
—
(2,169)
—
1,845
1,845
—
—
—
—
—
—
(324)

Total

Total
88,002
(285)
87,717
(33,237)
(1,828)
(35,065)
3,862
—
5,958
70
62,542
(33,182)
1,845
(31,337)
3,991
2
—
8,923
5,145
41
49,307

At January 1,2022
Effect of change in accounting policy
At January 1, 2022 (Restated*)
Loss for the year (Restated*)
Other comprehensive loss
Total
Share-based payments
Exercise of share options
Convertible loan notes
Issuance of warrants
At December 31, 2022
Loss for the year
Other comprehensive loss
Total
Share-based payments
Deferred restricted stock units awarded
Exercise of share options
Issuance of ordinary shares
Convertible loan notes
Issuance of warrants
At December 31, 2023

The accompanying notes form an integral part of these consolidated financial statements.

* See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

44

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Corporate information

1.
Mereo  BioPharma  Group  plc  (the  “Company”  or  “Mereo”)  is  a  clinical-stage,  United  Kingdom  (“UK”)  based 
biopharmaceutical company focused on rare diseases.

The Company is a public limited  company incorporated and domiciled in the UK, and registered in England, with shares 
publicly  traded  on  the  Nasdaq  Capital  Market  via  American  Depositary  Shares  (“ADSs”)  under  the  ticker  symbol 
"MREO".  The Company’s registered office is located at Fourth Floor, 1 Cavendish Place, London, W1G 0QF, United 
Kingdom.

The  consolidated  financial  statements  of  Mereo  BioPharma  Group  plc  and  its  subsidiaries  for  the  year  ended 
December 31, 2023 were authorized for issue in accordance with a resolution of the Directors on April 24, 2024. The 
principal activities of the Company are the development and commercialization of innovative therapeutic pharmaceutical 
products for rare diseases.

2. Material accounting policies
Basis of preparation
The  Company’s  consolidated  financial  statements  have  been  prepared  in  accordance  with  UK-adopted  International 
Accounting Standards and the Companies Act 2006.

The consolidated financial statements are presented in pound  sterling (“£”), which  is the presentational currency of the 
Company. The functional currencies of consolidated subsidiaries are pound sterling and US dollars (“$”). All amounts 
disclosed  in  the  consolidated  financial  statements  and  notes  have    been  rounded  to  the  nearest  thousand,  unless 
otherwise  stated. The financial statements have  been  prepared  on the historical cost basis, except for the revaluation 
of certain  financial instruments that are measured at fair values at the end of each  reporting period, as explained in the 
accounting policies below.

In the condensed consolidated statement of comprehensive loss for the six months ended June 30, 2023, the Company 
included  amounts  received  from  its  depositary  within  other  operating  income.  These  amounts  are  included  within 
administrative expenses for the year ended December 31, 2023.

Basis of consolidation
The  consolidated  financial  information  comprises  the  financial  statements  of  Mereo  BioPharma  Group  plc  and  its 
subsidiaries as at December 31, 2023.  Subsidiaries are all entities over which  the Company has control. The Company 
controls an entity when the Company is exposed to, or has rights to, variable returns from its involvement with the entity 
and  has  the ability to affect those  returns through  its power over the entity.

Subsidiaries  are  fully  consolidated  from  the  date  on  which  control  is  transferred  to  the  Company.  They  are 
deconsolidated  from  the  date  that  control  ceases.  Intercompany  transactions,  balances  and  unrealized  gains  on 
transactions between subsidiaries are eliminated in preparing the consolidated financial statements. Accounting policies 
of subsidiaries are consistent with the policies adopted by the Company.

The  Company  has  an  employee  benefit  trust    ("EBT")  to  facilitate  share  transactions  pursuant  to  employee  share 
schemes. Although  the trust  is a separate legal entity  from  the Company,  its assets are considered to be part of the 
Company’s assets in accordance with the IFRS  10 rules  on special purpose  vehicles. The Company is deemed to 
control the trust principally because the trust cannot operate without the funding the Company provides.

Segmental information
The Company has  one operating segment. The Chief Operating  Decision  Maker  (“CODM”) is the Chief Executive 
Officer. The Company has  a single portfolio of product candidates, with only direct research and development expenses 
monitored by product candidate. The CODM makes decisions over resource allocation at an  overall  portfolio  level  and  
the Company’s financing is managed and  monitored  on a consolidated basis.

Non-current  assets held  by the Company are located in the United Kingdom and  United States. As at December 31, 
2023, less than £0.1 million (2022: £0.1 million) of non-current assets are located in the United States.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Going concern
The going concern basis has  been applied in these consolidated financial statements as the Company has adequate 
resources  to  meet  its  liabilities  as  they  fall  due  for  the  foreseeable  future  and  at  least    12  months  from  the  date  of 
approval of these consolidated financial statements.

The Company expects to incur significant operating losses for the foreseeable future as it continues its research and 
development  efforts,  seeks  to  obtain  regulatory  approval  of  its  product  candidates  and  pursues  any  future  product 
candidates the Company may develop.

Until such time as the Company can generate significant revenue from product sales, or other commercial revenues, if 
ever, or through  licensing and/or collaboration agreements for its rare disease or oncology product  candidates, the 
Company will seek  to finance its operations through  a combination of non-dilutive funding sources, public or private 
equity or debt financings or other sources.

As of December 31, 2023, the Company has  cash and short-term deposits available of £45.1 million.

The Company has prepared detailed cash flow forecasts for the period from approval of these consolidated financial 
statements to December 31, 2025. The Company has considered the continuing economic uncertainty, rises in inflation, 
and impacts on the labor market on these forecasts.

The Company’s existing funds provide the Company with sufficient cash resources to meet its liabilities as they fall due 
and for the period through December 31, 2025. Therefore, although the Company continues to generate losses, the 
Company considers that there is sufficient headroom between the forecast expenditure and cash resources such that 
the likelihood of the headroom being exhausted is remote. Therefore, the Company determined that it is appropriate to 
adopt the going concern basis of accounting in preparing these consolidated financial statements.

Revenue

Summary of material accounting policies
a)
The Company’s ordinary  business activities are the development of product  candidates to key clinical milestones and 
either  strategically  partnering  them  or  further  developing  such  product  candidates  through  regulatory  approval  and  
potentially commercialization. The Company may  enter into a range of different agreements with third parties, including 
but not limited  to: (i) licensing agreements where the global rights to a product candidate are licensed to a partner; and 
(ii) collaboration agreements where rights to a product candidate are licensed to a partner but the Company retains 
certain  rights,  for  example  to  further  develop  or  commercialize  the    product    candidate  in    specified  geographical 
territories.  Under both  licensing and collaboration agreements, rights to product candidates are provided  to a partner 
typically in exchange for consideration in the form of upfront payments and/or development, regulatory, commercial or 
other similar milestones, and  royalties on commercial sales, should regulatory approval be obtained for the product 
candidates. 

The terms of these arrangements typically include payment to the Company of one or more of the following: 
nonrefundable, upfront license fees; payments for research and development services; fees upon the exercise of 
options to obtain additional services or licenses; payments based upon the achievement of defined collaboration 
objectives; future regulatory and sales-based milestone payments; and royalties on net sales of future products. 

Where  the  Company  has  performed  significant  development  activities  for  its  product  candidates,  including  the 
setrusumab  and  leflutrozole  partnerships  described  in  Note  6,    receipts  from  agreements  with  third  parties  are 
considered to be proceeds derived  from customers of the Company’s ordinary activities and therefore represent revenue 
within the scope of IFRS 15, Revenue from Contracts with Customers.

When this is not the case and the third parties are not receiving outputs from the Company's ordinary activities , such 
as in the Navicixizumab ("Navi") partnership described in Note 9,  the third parties are not considered to be customers 
and the Company accounts for receipts from these agreements as other income.

To determine revenue recognition for arrangements that the Company determines are within the scope of IFRS 15, it 
performs the following five steps: (i) identify the contract(s) with a customer; (ii) identify the performance obligations in 
the contract; (iii) determine the transaction price; (iv) allocate the transaction price to the performance obligations in the 
contract; and (v) recognize revenue when, or as, the Company satisfies the performance obligations. The Company only 
applies  the  five-step  model  to  contracts  when  it  is  highly  probable  that  the  entity  will  collect  substantially  all  of  the 
consideration it is entitled to in exchange for the goods or services it transfers to the customer. As part of the accounting 
for these arrangements, the Company must make significant judgments, including identifying performance obligations 

46

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

in the contract, estimating the amount of variable consideration to include in the transaction price and allocating the 
transaction price to each performance obligation.

Once a contract is determined to be within the scope of IFRS 15, the Company assesses the goods or services promised 
within the contract and determines those that are performance obligations. Arrangements that include rights to additional 
goods  or  services  that  are  exercisable  at  a  customer’s  discretion  are  generally  considered  options.  The  Company 
assesses if these options provide a material right to the customer and if so, they are considered performance obligations.

Performance  obligations  are  promised  goods  or  services  in  a  contract  to  transfer  a  distinct  good  or  service  to  the 
customer. The promised goods or services in the Company’s contracts with customers primarily consist of license rights 
to the Company’s intellectual property, research and development services and options to obtain additional licenses, 
such  as  a  commercialization  license  for  a  potential  product  candidate.  Promised  goods  or  services  are  considered 
distinct when: (i) the customer can benefit from the good or service on its own or together with other readily available 
resources,  and  (ii)  the  promised  good  or  service  is  separately  identifiable  from  other  promises  in  the  contract.  In 
assessing  whether  promised  goods  or  services  are  distinct,  the  Company  considers  factors  such  as  the  stage  of 
development of the underlying intellectual property, the capabilities of the collaboration partner to develop the intellectual 
property  on  their  own  and  whether  the  required  expertise  is  readily  available.  In  addition,  the  Company  considers 
whether the customer can benefit from a promise for its intended purpose without the receipt of the remaining promises, 
whether the value of the promise is dependent on the unsatisfied promises, whether there are other vendors that could 
provide the remaining promises, and whether it is separately identifiable from the remaining promises.

The Company estimates the transaction price based on the amount of consideration the Company expects to receive 
for transferring the promised goods or services in the contract. The consideration may include both fixed consideration 
and variable consideration. At the inception of each arrangement that includes variable consideration, the Company 
evaluates the amount of the potential payments and the likelihood that the payments will be received. The Company 
utilizes either the most likely amount method or expected value method to estimate variable consideration to include in 
the transaction price based on which method better predicts the amount of consideration expected to be received. The 
amount included in the transaction price is constrained to the amount for which it is highly probable that a significant 
reversal of cumulative revenue recognized will not occur. At the end of each subsequent reporting period, the Company 
reevaluates  the  estimated  variable  consideration  included  in  the  transaction  price  and  any  related  constraint,  and  if 
necessary,  adjusts its  estimate  of the  overall transaction  price. Any such  adjustments are recorded  on a cumulative 
catch-up basis in the period of adjustment. The initial transaction price of a contract does not include amounts associated 
with customer option payments. 

After the transaction price is determined, it is allocated to the identified performance obligations based on the estimated 
standalone selling price. The Company must develop assumptions that require judgment to determine the standalone 
selling  price  for  each  performance  obligation  identified  in  the  contract.  The  Company  utilizes  key  assumptions  to 
determine  the  standalone  selling  price,  which  may  include  other  comparable  transactions,  pricing  considered  in 
negotiating  the  transaction,  probabilities  of  technical  and  regulatory  success  and  the  estimated  costs.  Based  on  the 
current agreements in effect, there is limited judgment in determining the revenue and transaction price. Certain variable 
consideration is allocated specifically to one or more performance obligations in a contract when the terms of the variable 
consideration  relate  to  the  satisfaction  of  the  performance  obligation  and  the  resulting  amounts  allocated  to  each 
performance obligation are consistent with the amounts the Company would expect to receive for each performance 
obligation.

The Company then recognizes as revenue the amount of the transaction price that is allocated to the respective 
performance obligation when (or as) each performance obligation is satisfied at a point in time or over time, and if over 
time, the facts and circumstances of each respective contract will be used to determine the revenue recognitions 
pattern. The Company currently does not have any revenue that is being recognized over a time period. 

Payments to third parties arising as a direct consequence of revenue recognized are also recorded within cost of 
revenue in the Company's consolidated statement of operations and comprehensive loss. Intangible assets out-
licensed under a license or collaboration agreement are recorded within  cost of revenue in the Company’s 
consolidated statement of comprehensive (loss)/income based on an allocation of cost  or value  of the rights that 
have  been out-licensed. 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

License revenue
The Company has no approved product candidates and accordingly has not generated any revenue from commercial 
product sales. Revenue to date has been generated principally from licensing arrangements and collaboration 
agreements with a small number of the Company's customers. 

If a license to the Company's intellectual property is determined to be distinct from the other performance obligations 
identified in the arrangement, the Company recognizes revenues from non-refundable, upfront fees allocated to the 
license at such time as the license is transferred to the licensee and the licensee is able to use, and benefit from, the 
license.

Contingent milestone payments
The Company's licensing arrangements and collaboration agreements may include development, regulatory and sales 
milestones. IFRS 15 constrains the amount of variable consideration included in the transaction price in that either all, 
or a portion, of variable consideration should be included in the transaction price. The variable consideration should be 
included only to the extent that it is highly probable that a significant reversal in the amount of cumulative revenue 
recognized will not occur when the uncertainty associated with the variable consideration is subsequently resolved. 
The Company evaluates the probability of the milestones being reached and estimates the amount to be included in 
the transaction price using the most likely amount method. The Company evaluates factors such as the scientific, 
clinical, regulatory, commercial and other risks that much be overcome to achieve the particular milestone in making 
this assessment. If it is highly probable that a significant revenue reversal would not occur, the associated milestone 
value is included in the transaction price. Milestone payments that are not within the Company's control, such as 
regulatory approvals, are not considered highly probable of being achieved until those approvals are received. At the 
end of each reporting period, the Company re-evaluates the probability of achievement of such milestones and any 
related constraints and, if necessary, adjusts the estimate of the overall transaction price. Any such adjustments are 
recorded on a cumulative catch up basis, which would affect revenue and net loss in the period of adjustment. 

Research and development (R&D) expenses

b)
Expenditure  on  product  development  is  capitalized  as  an  intangible  asset  and  amortized  over  the  expected  useful 
economic life of the product candidate concerned. Capitalization commences from the point at which technical feasibility 
and commercial viability of the product candidate can be demonstrated and the Company is satisfied that it is probable 
that future economic benefits will result  from the product  candidate once completed. Capitalization ceases when the 
product candidate receives regulatory approval for launch. No such costs have been capitalized to date.
Expenditure on R&D activities that  do not meet  the criteria  for capitalization, including ongoing costs associated with 
acquired intellectual property rights and intellectual property rights generated internally by the Company,  is recognized 
in the consolidated statement of comprehensive (loss)/income as incurred. Intellectual property and in-process R&D 
from asset acquisitions are recognized as intangible assets at cost.

Taxation

c)
Tax expense recognized in the consolidated statement of comprehensive (loss)/income comprises the sum of deferred 
tax and current tax not recognized in other comprehensive income or directly in equity.

Current income tax
Current  income  tax  assets  and  liabilities  are  measured  at  the  amount  expected  to  be  recovered  from  or  paid  to  the 
taxation authorities that are unpaid at the reporting date. Current tax is payable on taxable profit, which differs from profit 
or loss in the consolidated financial statements. Calculation of current tax is based on tax rates  and tax laws  that have  
been enacted, or substantively enacted, by the end of the reporting  period in the jurisdictions in which the Company 
operates.

Amounts receivable in respect  of research and development tax credits  are recognized in the consolidated financial 
statements provided  there is sufficient evidence that the amounts are recoverable. These credits are recognized within 
income  tax in the consolidated statement of comprehensive (loss)/income.

A provision is recognized for matters in which the tax determination is uncertain but it is considered probable that there 
will be a future outflow of funds  to a tax authority. The provisions are measured at the best  estimate of the  amount 
expected to become payable.

48

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The  Company  recognizes  interest  received  on  taxes  repaid  within  finance  income  in  the  consolidated  statement  of 
comprehensive (loss)/income. As of December 31, 2023 and 2022, no material accrued interest is included in the related 
tax receivable recognized in the consolidated balance sheet.

Deferred tax
Deferred  tax  is  provided  using  the  liability  method  on  temporary  differences  between  the  tax  bases  of  assets  and 
liabilities and their carrying amounts for financial reporting purposes at the reporting date.

Deferred income tax assets are recognized for all deductible temporary differences, carry-forward of unused tax credits 
and unused tax losses, to the extent that it is probable that taxable profit will be available against which  the deductible 
temporary differences and the carry-forward of unused tax credits  and  unused tax losses can  be utilized. The carrying 
amount of deferred income tax assets is reviewed at the end of each reporting period and reduced to the extent that it 
is no longer probable that sufficient taxable profit will be available to allow all or part of the deferred income  tax asset 
to be utilized. Unrecognized deferred income tax assets are reassessed at the end of each  reporting  period and are 
recognized to the extent that it has become probable that future taxable profit will allow the deferred tax assets to be 
recovered.

Deferred tax assets and liabilities are measured on an undiscounted basis at the tax rates that are expected to apply in 
the year when the asset or liability is realized, based on tax rates (and tax laws) enacted or substantively enacted at the 
end of the reporting period.

Deferred tax assets and liabilities are offset when there is a legally enforceable right to set off current tax assets against 
current tax liabilities and  when they relate to income  taxes  levied  by the same taxation authority  and the Company 
intends to settle its current tax assets and liabilities on a net basis.

Foreign currencies

d)
Items    included  in  the  consolidated  financial  statements  are  measured  using  the  currency    of  the  primary  economic 
environment  in  which    the  entity  operates  (“the  functional  currency”).  The  consolidated  financial  statements  are 
presented in pound sterling (“£”), which is the presentational currency of the Company. The functional currencies of 
consolidated subsidiaries are pound sterling and US dollars (“$”).

Transactions in foreign  currencies are initially recorded by the Company at the rate prevailing on the date the transaction 
first qualifies for recognition. Differences arising on settlement or translation of monetary items  as well as gains or losses 
on  the  retranslation  of  foreign    currency    balances  at  the  year-end  are  recognized  in  the  consolidated  statement  of 
comprehensive (loss)/income.

The results  and  financial position of subsidiaries that have a functional currency  different from  the presentational 
currency  of the Company are translated into the presentational currency  (pound  sterling). The assets and liabilities of 
such entities are translated into pound sterling at the rate of exchange prevailing at the balance sheet date. Income  and  
expenses are translated at the average rate for the year, which approximates the exchange rates at the dates of the 
transactions. Fair value  adjustments arising on acquisition of such entities are treated as assets and  liabilities of the 
relevant entity and translated into pound sterling at the closing rate. The exchange differences arising on translation for 
consolidation are recognized in other comprehensive (loss)/income.

Property, plant and equipment

e)
Property,  plant  and  equipment is stated at  cost,  net  of  accumulated  depreciation and  accumulated impairment 
losses, if any.  Such cost includes the cost of replacing part of the plant  and  equipment if the recognition criteria  are 
met.  All other repair and  maintenance costs are recognized in the consolidated statement of comprehensive loss as 
incurred.

Depreciation is computed using the straight-line method over the estimated useful lives of the related assets. Useful  
lives  of various property, plant and equipment are as follows:

•

•

•

Leasehold improvements

shorter of lease term or ten years

Office equipment

IT equipment

five years

three years

Property, plant and equipment is derecognized upon disposal or when no future economic benefits are expected from 
its use or disposal. Any gain or loss arising on derecognition of the asset (calculated as the difference between  the net 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

disposal proceeds and  the carrying amount of the asset) is included in the consolidated statement of comprehensive 
(loss)/income when the asset is derecognized.

The residual values, useful lives and methods of depreciation of property, plant and equipment are reviewed annually 
and adjusted prospectively, if appropriate.

Business combinations

f)
Business combinations are accounted for using the acquisition method  of accounting. At the date  of acquisition, the 
Company  initially  recognizes  the  fair  value    of  the  identifiable  assets  acquired,  the  liabilities  assumed  and  any  non-
controlling interest in the acquired business.

The consideration transferred is measured at  fair  value  at  the  date  of acquisition. The excess of the consideration 
transferred over the fair value  of net identifiable assets of the business acquired is recorded as goodwill, unless the 
amount of consideration transferred is less than the fair value of net identifiable assets of the business acquired in which  
case the difference is recognized directly  in the consolidated statement of comprehensive (loss)/income as a bargain 
purchase. A valuation is performed of assets and liabilities assumed on each acquisition accounted for as a business 
combination based on the best estimate of fair value.

Where the settlement of any part of cash consideration is deferred, the amounts payable in the future are discounted to 
their present value. Contingent consideration is classified either as equity or a financial liability and  is recognized  at  
fair  value  on the  acquisition date.  Amounts classified as a financial liability are subsequently remeasured to fair value 
in accordance with IFRS 9 (Financial Instruments), with changes in fair value recognized in the consolidated statement 
of  comprehensive  (loss)/income  as  an  administrative  expense.  The  only  Contingent  consideration  liabilities  are  the 
Company's  obligations  under  the  Contingent  Value  Rights  Agreement  (the  “CVR  Agreement”),  dated  April  23,  2019 
which required the Company to make payments if specified milestones are achieved within agreed time periods on the 
etigilimab and navicixizumab product candidates acquired in the acquisition of Oncomed in 2019. The CVR Agreement 
expires on April 23, 2024 and the CVR liability was £nil in all periods presented.

Directly  attributable  acquisition-related  costs  are  expensed  as  incurred  within  the  consolidated  statement  of 
comprehensive (loss)/income.

g)

Leases

The Company assesses whether a contract is, or contains, a lease at inception of the contract. The Company recognizes 
a right-of-use asset and a corresponding liability with respect to all lease arrangements in which it is a lessee.

The  lease  liability  is  initially  measured  at  the  present    value    of  the  lease  payments  that  are  not  paid    at  the 
commencement  date,  discounted  using  the  rate  implicit  in  the  lease.  If  this  rate  cannot  be  readily  determined,  the 
Company uses its incremental borrowing rate.

Lease payments included in the measurement of the lease liability comprise of fixed lease payments, less any lease 
incentives receivable.

The lease liability is subsequently measured by increasing the carrying amount to reflect interest  on the lease liability 
(using  the  effective  interest  method)  and  by  reducing  the  carrying  amount  to  reflect  the  lease  payments  made.  The 
Company  remeasures  the  lease  liability  (and    makes  a  corresponding  adjustment  to  the  related  right-of-use  asset) 
whenever there is a significant change in lease term, lease payments or if the lease contract is modified and the lease 
modification is not accounted for as a separate lease.

The right-of-use assets comprise the initial  measurement of the corresponding lease liability and  lease payments made  
at  or  before  the  commencement  date,  less  any    lease  incentives  received    and    any    initial  direct  costs.  They  are 
subsequently measured at cost less accumulated depreciation and impairment losses.

The right-of-use assets are presented within  property,  plant  and  equipment. Right-of-use assets are depreciated over 
the shorter period of lease term and useful life of the underlying asset:

Right-of-use asset (building)

Right-of-use asset (equipment)

six to nine years

one to two years

•

•

50

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Intangible assets

h)
Intangible assets acquired outside a business combination are initially recorded at cost, using the Cost accumulation 
model. Under this model, the asset is initially recognized, at the date of acquisition, at the cost paid. Variable payments 
are  not  included  in  the  carrying  amount  of  the  asset  at  acquisition,  and  no  liability  is  recognized  for  the  contingent 
consideration until the related uncertainty is substantially resolved. Subsequent payments made are capitalized as part 
of the cost of the asset if they are paid as a consequence of the utility of the asset. This is a change in accounting policy 
for the year ended December 31, 2023 as described in Note 4. 

Intangible Assets that have been acquired through a business combination are initially recorded at fair value. The fair 
value  of any contingent consideration is regularly reviewed  based on the probability of achieving contractual milestones. 
Refer to the  policy on business combinations above for more information.

Where the consideration paid or payable is in shares, the cost is measured in accordance with IFRS 2 (Share Based 
Payments).

Intangible assets that are not yet available for use  are reviewed for impairment at each  reporting  date by allocating 
the assets to the cash-generating units to which they relate. The estimated useful life is the lower of the legal duration  
and economic useful life. The estimated useful lives  of intangible assets are reviewed at least  annually.

Intangible assets are amortized from the date they are available for commercial use. The only intangible asset currently 
amortized is the UCB/Amgen License, which is amortized using the straight-line method over its useful economic life 
(see Note 13).

An intangible asset is derecognized on disposal, or when no future economic benefits are expected from use or disposal. 
Gains or losses arising from derecognition of an intangible asset, measured as the difference between  the net disposal 
proceeds and  the carrying amount of the asset, are recognized in profit or loss when the asset is derecognized.

Financial instruments

i)
Financial assets and  liabilities are recognized in the consolidated balance sheet  only when the Company becomes 
party to the contractual provisions of the instrument.

Financial assets
On initial  recognition, a financial asset is classified into one of three primary measurement categories:

•

•

•

Amortized cost;

Fair value  through other comprehensive income  (“FVOCI”); or

Fair value  through profit or loss  (“FVTPL”).

The initial  classification into a primary  measurement category depends on the nature  and purpose  of the financial 
asset.

Interest income,  impairment losses or gains from reversal of impairment, are recognized directly in the consolidated 
statement of comprehensive income. Changes in the fair value of financial assets measured through profit or loss are 
recognized within the consolidated statement of comprehensive (loss)/income upon each measurement date. Financial 
assets  measured  at  amortized  cost  are  recognized  in  the  consolidated  balance  sheet  at  the  gross  cost  net  of 
accumulated amortization. For financial assets measured at FVOCI, the difference between cumulative fair value gains 
or losses and the  cumulative amounts recognized  in the consolidated statement of comprehensive (loss)/income is 
recognized in other comprehensive income until derecognition, when the amounts in other comprehensive income are 
reclassified to the consolidated statement of comprehensive (loss)/income.

Classification as debt  or equity
Debt and equity instruments are classified as either financial liabilities or as equity in accordance with the substance of  
the  contractual arrangements and  the  definitions of  a financial liability and  an  equity instrument.

Embedded derivatives
An embedded derivative is a component of a hybrid contract that also  includes a non-derivative host with the effect  that 
some    of  the  cash  flows    of  the  combined  instrument  vary  in  a  way  similar  to  a  stand-alone  derivative.  Derivatives 
embedded in hybrid contracts with hosts that are not financial assets within the scope of IFRS  9 (e.g.  financial liabilities) 
are treated as separate derivatives when they meet the definition of a derivative, their risks and characteristics are not 
closely related to those of the host contracts and the host contracts are not measured at FVTPL.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Convertible loan notes
Convertible  loan  notes  are  regarded  as  compound  instruments  consisting  of  a  liability  component  and  an  equity 
component.  At  the  date  of  issue,  the  fair  value  of  the  liability  component  is  estimated  using  a  discount  rate  for  an 
equivalent liability without the conversion feature. This amount is recorded as a liability on an amortized cost  basis using 
the effective interest  method  until extinguished upon conversion or at the instrument’s maturity date.  The difference 
between  the proceeds from the issue of the convertible loan note and the fair value  assigned to the liability component 
is included in equity  and  not subsequently remeasured. Upon conversion, the amount initially recognized in “Other 
capital reserves” will be transferred to “Share premium.”

Financial liabilities
All financial liabilities are measured subsequently at amortized cost using the effective interest method  or at FVTPL.

Borrowings  (including  interest-bearing  loans)  are  initially  recognized  at  fair  value,    net  of  transaction  costs  incurred.  
Borrowings are subsequently measured at amortized cost.  Any difference between  the proceeds (net of transaction 
costs) and the redemption amount is recognized in profit or loss  over the period of the borrowings using the effective 
interest  method.  Under  the  effective  interest  method,  amortization  is  included  as  a  finance  cost  in  the  consolidated 
statement of comprehensive (loss)/income.

Non-substantial  modifications  to  financial  liabilities  are  measured  at  amortized  cost  with  the  associated  gain  or  loss  
recognized  in  the  consolidated  statement  of  comprehensive  (loss)/income.  The  gain  or  loss    is  computed  as  the 
difference between  the original contractual cash flows  and  the modified cash flows, discounted at the original effective 
interest rate. For substantial modifications, the existing financial liability is derecognized and a new financial liability is 
established.

Borrowings  are  derecognized  from    the  balance  sheet    when    the  obligation  specified  in  the  contract  is  discharged, 
cancelled or expired.

The warrant  instruments are  recorded  at  fair  value,  with  changes in the fair  value  recognized in the consolidated 
statement of comprehensive (loss)/income, where the terms of the warrant instruments allow for cashless exercise.

Fair value measurement

j)
Fair value  is the price that would be received  to sell  an asset or paid  to transfer a liability in an orderly transaction 
between market participants at the measurement date. The fair value measurement is based on the presumption that 
the transaction to sell the asset or transfer the liability takes place either:

•

•

In the principal market for the asset or liability; or

In the absence of a principal market, in the most  advantageous market  for the asset or liability. The principal or 
the most advantageous market must be accessible by the Company.

The fair value  of an asset or a liability is measured using the assumptions that market participants would use when 
pricing the asset or liability, assuming that market participants act in their economic best interest.

The Company uses valuation techniques that are appropriate in the circumstances and for which sufficient data  are 
available  to  measure  fair  value,    maximizing  the  use  of  relevant    observable  inputs  and  minimizing  the  use  of 
unobservable inputs.

All  assets  and  liabilities  for  which  fair  value  is  measured  or  disclosed  in  the  consolidated  financial  statements  are 
categorized within the fair value  hierarchy, described as follows,  based on the lowest level input that is significant to 
the fair value  measurement as a whole:

Level 1 — quoted (unadjusted) market prices  in active markets for identical assets or liabilities.

Level  2 — valuation techniques for which  the lowest  level  input  that is significant to the fair value 
measurement is directly or indirectly observable.

Level  3 — valuation techniques for which  the lowest  level  input  that is significant to the fair value 
measurement is unobservable.

•

•

•

52

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

For assets and liabilities that are recognized in the consolidated financial statements on a recurring  basis, the Company 
determines whether transfers have  occurred  between  levels in the hierarchy by reassessing categorization (based on 
the lowest level input that is significant to the fair value  measurement as a whole) at the end of each  reporting period.

Impairment of non-financial assets

k)
Further disclosures relating to impairment of non-financial assets are also provided in the following notes:

•

•

•

Disclosures for significant assumptions

Property, plant and equipment

Note 3

Note 12

 Intangible assets not yet available for use

Notes 13 and 14

At each reporting date, the Company assesses whether there is any indication that an asset may be impaired. If any 
such indication exists, or when annual impairment testing for an asset is required, the Company estimates the asset’s 
recoverable amount. An asset’s recoverable amount is the higher of an asset’s or cash-generating unit’s fair value  less 
costs of disposal and  its value  in use.  The recoverable amount is determined for an individual asset, unless the asset 
does not generate cash inflows that are largely independent of those from other assets or groups of assets. When the 
carrying amount of an asset or cash-generating unit exceeds its recoverable amount, the asset is considered impaired 
and is written down to its recoverable amount.

In  assessing  value    in  use,  the  estimated  future  cash  flows    are  discounted  to  their  present    value    using  a  pre-tax 
discount rate that reflects current market  assessments of the time value  of money  and  the risks specific to the asset. 
In determining fair value  less costs of disposal, recent market transactions are taken into account. If no such transactions 
can  be identified, an appropriate valuation model  is used. These calculations are corroborated by valuation multiples, 
quoted share  prices  for publicly traded companies or other available fair value  indicators.

Impairment losses are recognized in the consolidated statement of comprehensive (loss)/income in expense categories 
consistent with the function of the impaired asset.

An assessment is made  at each  reporting date to determine whether there is an indication that previously recognized 
impairment losses no longer  exist or have  decreased. If such indication exists,  the Company estimates the asset’s or 
cash-generating unit’s recoverable amount. A previously recognized impairment loss is reversed only if there has been 
a change in the assumptions used to determine the asset’s recoverable amount since the last impairment loss  was 
recognized. The reversal is limited  so that the carrying amount of the asset does not exceed its recoverable amount, 
nor exceed the carrying amount that would have been determined, net of depreciation, had no impairment loss  been 
recognized for the asset in prior years. Such reversal is recognized in the consolidated statement of comprehensive 
(loss)/income. 

Cash and short-term deposits

l)
Cash and short-term deposits in the balance sheet comprise cash at banks and  on hand  along with short-term deposits 
with an original maturity of three months or less from the date of deposit,  which  are subject to an insignificant risk of 
changes in value.

m) Provisions
Provisions  are  recognized  when  the  Company  has    a  present  obligation  (legal  or  constructive)  as  a  result  of  a  past  
event, it is probable that an outflow of resources embodying economic benefits will be required to settle the obligation 
and a reliable estimate can be made of the amount of the obligation. When the Company expects some  or all  of  a 
provision to be  reimbursed,  for example, under  an  insurance contract,  the reimbursement is recognized as a separate 
asset,  but  only  when  the  reimbursement  is  virtually  certain.  The  expense  relating  to  a  provision  is  presented  in  the 
consolidated statement of comprehensive (loss)/income net of any reimbursement.

If the effect  of the time value of money is material, provisions are discounted using a current pre-tax rate that reflects, 
when appropriate, the risks  specific to the liability. When discounting is used,  the increase in the provision due to the 
passage of time is recognized as a finance cost.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Share-based payments

n)
Employees  (including  executives)  and  non-executive  directors  of  the  Company  receive  remuneration  in  the  form    of  
share-based payments, whereby  employees and  non-executive directors  render  services as consideration for equity 
instruments (equity settled transactions).

Incentives in the form of shares are provided to employees and non-executive directors under various plans (see Note 
25).

In accordance with IFRS 2 Share-based Payments (“IFRS  2”), charges for these  incentives are expensed through the 
consolidated statement of comprehensive (loss)/income using the accelerated graded-vesting attribution method over 
their  vesting  period,  based  on  the  Company’s  estimate  of  shares  that  will  eventually  vest.  The  total  amount  to  be 
expensed is determined by reference to the fair value  of the options or awards at the date they were granted.

Equity-settled share-based payment transactions with parties other than  employees are measured at the fair value  of 
the goods or services received,  except where that fair value  cannot be estimated reliably,  in which case they are 
measured at the fair value  of the equity instruments granted, measured at the date the entity obtains the goods or the 
counterparty renders the service.

In accordance with IFRS 2, the cancellation of share options is accounted for as an acceleration of the vesting period 
and  therefore  any  amount  unrecognized  that  would  otherwise  have  been  charged  in  future  accounting  periods    is 
recognized immediately. When options are forfeited, the accounting expense for any  unvested awards is reversed.

Costs of issuing capital

o)
Incremental costs incurred  and  directly  attributable to the offering of equity  securities are deducted from the related 
proceeds of the offering. The net amount is recorded as share  premium in the period when such shares are issued. 
Where such expenses are incurred prior to the offering they are recorded in prepayments until the offering completes. 
Other costs incurred in such offerings are expensed as incurred and included in general and administrative expenses.

Employee Benefit Trust

p)
The Company operates an Employee Benefit Trust (“EBT”), the Mereo BioPharma Group plc Employee Benefit Trust.

The EBT holds ADSs to satisfy the exercise of options under the Company’s share-based incentive schemes (see Note 
25). The EBT is a Jersey-based trust which was initially funded by a loan from the Company, which it utilized to purchase 
shares in sufficient quantity to fulfill  the envisaged awards. The Company will issue ordinary shares to a custodian for 
conversion by a depositary bank to ADSs and delivery to the EBT. These ordinary shares will be presented as employee 
benefit trust shares on the consolidated balance sheet at their nominal value.

Shares held by the EBT are included in the consolidated balance sheet as a reduction in equity.

Pension contribution costs

q)
Payments  to  defined  contribution  retirement  benefit    plans  are  recognized  as  an  expense  when  employees  have 
rendered service entitling them to the contributions.

Significant judgments, estimates and assumptions

3.
The preparation of these consolidated financial statements requires the management of the Company to make estimates 
and judgments that affect the reported amounts of assets, liabilities, revenues and expenses. The Company bases its 
estimates and judgments on historical experience and on various other assumptions that it considers to be reasonable. 
Actual results may differ from these estimates under different assumptions or conditions.

Judgments

Change in accounting policy

During the year, the Company voluntarily changed its accounting policy for determining how the cost of an intangible 
asset acquired outside a business combination should be determined where the acquirer may be required to make future 
contingent payments. This change required the Company to make judgments about whether the new accounting policy 
would provide reliable and more relevant information to users of the accounts. Details of this judgment and the impact 
on the financial statements in the current and prior periods are provided in Note 4.

54

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Revenue and cost of revenue 

Judgment  is  required  to  determine  the  appropriate  accounting  for  the  $9  million  (£7.1  million)  milestone  payment  
received under the license and collaboration agreements with Ultragenyx Pharmaceutical, Inc. (“Ultragenyx”) and the 
$1.0 million (£0.8 million) upfront payment received under the license agreement with ReproNovo SA ("ReproNovo"). 

Management has determined that the upfront proceeds from both agreements represent proceeds from the Company’s 
ordinary business activities and, therefore, represent revenue within the scope of IFRS 15, Revenue from Contracts with 
Customers. 

Management  has  also  made  judgments  related  to  the  determination  whether  the  performance  obligation  has  been 
satisfied  on  how  much  of  each  receipt  should  be  recognized  as  revenue  in  the  year  based  on  what  performance 
obligations  existed  in  the  agreements  and  the  extent  to  which  they  were  satisfied  during  the  year.  Management 
concluded that it was appropriate to recognize the full amount of both payments in the year These judgments, and the 
reasons for Management's conclusions, are explained in more detail in Note 5.

Estimates and assumptions

Recoverable amounts of intangible assets

Acquired  development  programs  not  yet  available  for  use  are  assessed  annually  for  impairment.  This  involves 
comparing the carrying value of each asset to its recoverable amount. Any excess of the asset’s carrying value over its 
recoverable amount is recognized as an impairment in the consolidated statement of comprehensive (loss)/income. The 
calculation  of  each  asset's  recoverable  amount  involves  making  a  number  of  significant  estimates  and  assumptions 
about the cash flows to be generated by the asset including the likelihood of successful product approval, the costs of 
attaining  approval,  the  estimated  useful  life  of  intangible  assets  following  commercialization  and  the  subsequent 
profitability of the product once approved. further information on the key inputs, valuation techniques and the sensitivity 
of the balance to the key assumptions is provided in Note 14.

4.

Changes in accounting policies

Voluntary change in accounting policy

a)
Effective January 1, 2024, the Company began complying with and reporting under the U.S. Securities and Exchange 
Commission  rules  and  Nasdaq  listing  requirements  applicable  to  U.S.  domestic  filers,  including  preparing  financial 
statements in compliance with accounting principles generally accepted in the United States of America (“U.S. GAAP”). 
In connection with preparing these financial statements for the first time, the Company reviewed all of its accounting 
policies and noted that there is no IFRS standard that states how the cost of an intangible asset acquired outside a 
business combination should be determined where the acquirer may be required to make future contingent payments 
(“Variable Consideration”). Entities are therefore required to follow IAS 8, ‘Accounting policies, changes in accounting 
estimates and errors’ (“IAS 8"), to develop an appropriate policy for such items and there is diversity in practice.

The Company historically recorded a liability for Variable Consideration to be paid in cash equal to the present value of 
the probability-weighted future cash flows, with changes in this amount related to the probability or timing of those cash 
flows recognized as a revision to the cost of the related intangible asset. Variable Consideration to be paid in equity 
were recorded at fair value within the share based payment reserve accordance with IFRS 2.

The Company has concluded that a more relevant and reliable view of its financial position and performance would be 
provided if Variable Consideration was instead recognized using the cost accumulation model as described in Note 2 h) 
above. The Company believes this revised policy is preferable as it better reflects the way the liability will be discharged, 
removes considerable estimation uncertainty, and more closely aligns the Company with industry practice. 

The Company has therefore made a voluntary change in accounting policy. This involved de-recognizing a portion of 
the alvelestat intangible asset together with a corresponding reduction of the liability for deferred cash consideration  and 
the  share  based  payment  reserve  that  reflected  the  deferred  cash  and  deferred  equity  consideration.  Accumulated 
losses  were  also  reduced  to  reflect  the  cumulative  movements  in  the  liability  that  had  been  recognized  in  the 
consolidated statement of comprehensive (loss)/income. Had the accounting policy not been changed, a liability of £4.6 
million would have been recorded on the balance sheet at December 31, 2023 related to  probable near-term milestone 
payments. See Note 24 for detail of the total potential commitments in relation to alvelestat. 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Each of the affected financial statement line items for the prior periods are shown in the tables below: 

Consolidated Balance sheet (extract)

31-Dec-22

Increase/ decrease

Intangible assets

Provisions (Non-current)
Net assets

Other capital reserves
Accumulated losses
Total equity

£'000s
24,116

4,822
61,868

132,680
(331,164)
61,868

£'000
(3,960)

(4,634)
674

(1,332)
2,006
674

Consolidated Balance sheet (extract)

1-Jan-22

Increase/ decrease

Intangible assets

Provisions (current)
Provisions (Non-current)
Net assets

Other capital reserves
Accumulated losses
Total equity

Consolidated Statement of Comprehensive 
(Loss)/Income

Finance costs
Net foreign exchange (loss)/gain
Loss before tax

Loss for the year attributable to equity holders 
of the parent

Total comprehensive loss for the year, 
attributable to equity holders of the parent

£'000s
24,564

2,803
1,320
88,002

129,835
(296,968)
88,002

2022

£'000s

(3,361)
1,525
(36,093)

(34,196)

(36,024)

£'000
(4,408)

(2,803)
(1,320)
(285)

(1,332)
1,047
(285)

Increase/ 
decrease

£'000

451
508
959

959

959

31-Dec-22
(Restated)
£'000
20,156

188
62,542

131,348
(329,158)
62,542

1-Jan-22
(Restated)
£'000
20,156

-
-
87,717

128,503
(295,921)
87,717

2022
(Restated)
£'000

(2,910)
2,033
(35,134)

(33,237)

(35,065)

There was no impact on Net cash flows used in operating activities, nor any other caption in the Consolidated Statement 
of Cash Flows or basic or diluted loss per share in any period presented. 

New standards, interpretations and amendments adopted from January 1, 2023

b)
In the current year, the Company has applied the below amendments to IFRS issued by the IASB that are effective for 
an  annual  period  that  begins  on  or  after  January  1,  2023.  Their  adoption  has  not  had  any  material  impact  on  the 
disclosures or on the amounts reported in these consolidated financial statements:

IFRS 17 – Insurance Contracts

Amendments to IAS 1 and IFRS Practice Statement 2 – Disclosure of accounting policies

Amendments to IAS 8 – Definition of accounting estimates

Amendments  to  IAS  12  –  Deferred  tax  related  to  assets  and  liabilities  arising  from  a  single  transaction  and 
international tax reform - Pillar Two model rules

•

•

•

•

56

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

New standards, interpretations and amendments not yet effective

c)
At the date of authorization of these consolidated financial statements, the Company has not applied the following new 
and revised IFRS that have been issued but are not yet effective, and in relation to those effective from January 1, 2025, 
had not yet been endorsed by the UK Endorsement Board.

Effective January 1, 2024

•

•

•

•

Amendments to IFRS 16 – Lease liability in a sale-and-leaseback

Amendments to IAS 1 – Classification of liabilities as current or non-current

Amendments to IAS 1 – Non-current liabilities with covenants

Amendments to IAS 7 and IFRS 7 – Supplier finance arrangements

Effective January 1, 2025

•

Amendment to IAS 21 – Lack of exchangeability

The Company does not expect the adoption of these IFRS amendments will have a material impact on the Company in 
the current or future reporting periods and on foreseeable future transactions.

5.

Group information

Information about subsidiaries
The consolidated financial statements of the Company include:

Name

Mereo BioPharma 1 Limited
Mereo BioPharma 2 Limited
Mereo BioPharma 3 Limited
Mereo BioPharma 4 Limited
Mereo BioPharma Ireland Limited
Mereo BioPharma 5, Inc.
Navi Subsidiary, Inc.
Mereo US Holdings Inc.
Mereo BioPharma Group plc
Employee Benefit Trust

Principal activities

Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Holding Company

Employee share scheme

% Equity         

% Equity         

Country of
incorporation

interest 
December 31,
2023

interest 
December 31,
2022

UK
UK
UK
UK
Ireland
US
US
US

Jersey

100
100
100
100
100
100
100
100

—

100
100
100
100
100
100
100
100

—

The  registered  office  of  Mereo  BioPharma  1  Limited,  Mereo  BioPharma  2  Limited,  Mereo  BioPharma  3  Limited  and 
Mereo BioPharma 4 Limited is located at Fourth Floor, 1 Cavendish Place, London W1G 0QF. The registered office of 
Mereo BioPharma Ireland Limited is 6 Lapp's Quay, Cork, T12 TA48, Republic of Ireland.

Mereo  US  Holdings  Inc.  was  incorporated  on  December  3,  2018  for  the  sole  purpose  of  effecting  the  business 
combination with Mereo BioPharma 5, Inc. (formerly OncoMed Pharmaceuticals, Inc.) on April 23, 2019. The registered 
office of Mereo US Holdings Inc., Mereo BioPharma 5, Inc. and its wholly owned subsidiary, Navi Subsidiary, Inc., is 
251 Little Falls Drive, City of Wilmington, County of New Castle, Delaware 19808, US.

6.

Revenue and Cost of Revenue

Ultragenyx Partnership

On January 25, 2021, the Company's license and collaboration agreement with Ultragenyx for the development and 
commercialization of setrusumab for OI became effective. Under the terms of the agreement, the Company received an 
upfront  payment  of  $50.0  million  (£36.5  million)  and  was  eligible  to  receive  up  to  $254  million  (£200  million)  in 
development, regulatory and commercial milestones and tiered double digit percentage royalties on net sales outside 
of  Europe  and  pay  a  fixed  double  digit  percentage  royalty  to  Ultragenyx  on  net  sales  in  Europe  .  The  license  and 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

collaboration agreement grants Ultragenyx an exclusive license to develop and commercialize setrusumab in the US 
and rest of the world, excluding Europe where the Company retains commercial rights. 

Two distinct performance obligations were identified as part of the license and collaboration agreement: (i) a promise to 
grant  the  license  to  develop  and  commercialize  setrusumab,  and  (ii)  provision  of  subsequent  clinical  supply  of 
setrusumab.

In the year ended December 31, 2023, the Company recognized milestone proceeds of $9.0 million (£7.1 million) as 
revenue  under  the  license  and  collaboration  agreement  with  Ultragenyx  for  setrusumab  following  achievement  of  a 
development milestone. The milestone payments constitute a change in transaction price for the Ultragenyx agreement, 
to which revenue was first recorded in the year ended December 31, 2021. Pursuant to the terms of the agreement, the 
Company  is  entitled  to  receive  milestone  payments  from  Ultragenyx  upon  the  achievement  of  certain  development, 
regulatory and sales based milestones. The variable consideration relating to future milestones and sales royalties are 
recognized  in  the  statement  of  comprehensive  income  when  achievement  of  the  milestones  are  probable  or  the 
underlying commercial sales are made, in the event regulatory approval is achieved. No revenues were recognized in 
respect of this agreement in the year ended December 31, 2022. proceeds were received in July 2023 and was indicative 
of  meeting  the  requirements  of  performance  obligation  (i)  above.  No  revenue  was  recognized  in  respect  of  this 
agreement in the year ended December 31, 2022. 

As  a  consequence  of  the  milestone  received  by  the  Company    under  the  license  and  collaboration  agreement  with 
Ultragenyx  and  in  accordance  with  terms  of  the  2015  asset  purchase  with  Novartis  which  requires  payment  of  a 
percentage of the proceeds received, the Company also recognized cost of revenue of £1.9 million in the year ended 
December 31, 2023. 

In 2021, the Company received a  $50.0 million (£36.5 million) upfront payment from Ultragenyx which triggered a £9.5 
million obligation to Novartis under our 2015 agreement with them. An amount of  £2.4 million was deferred from this 
obligation to reflect future costs that were expected to be incurred. Accordingly, the Company recognized cost of revenue 
of £9.5 million to reflect both the £7.2 million payment made to Novartis and the recognition of a liability within current 
other liabilities for this deferral. This liability was subsequently reduced through a credit to cost of revenue as the costs 
were incurred. Cost of revenue for 2022 was a credit of £0.9 million. 

ReproNovo Partnership 

On December 13, 2023, the Company and ReproNovo SA. (“ReproNovo”) announced a global licensing agreement for 
the development and commercialization of leflutrozole. Under the terms of the global licensing agreement, ReproNovo 
will receive an exclusive worldwide license to develop and commercialize leflutrozole. The Company received an upfront 
payment  of  $1.0  million  (£0.8  million)  in  December  2023.  ReproNovo  will  be  responsible  for  all  future  research, 
development  and  commercialization  of  leflutrozole.  Additionally,  the  Company  will  be  eligible  to  receive  up  to  $64.3 
million (£50.5 million) in future clinical, regulatory and commercial milestones, tiered royalties ranging from the low-to-
mid-single  digits  on  global  annual  net  sales  of  leflutrozole.  A  single  performance  obligation  was  identified  in  this 
agreement which is the promise to grant the license to develop and commercialize leflutrozole. As the upfront payment 
is  fixed  and  non-refundable,  and  therefore  does  not  represent  variable  consideration,  the  performance  obligation  is 
satisfied and revenue of $1.0 million (£0.8 million) was recognized at the point in time that ReproNovo gained the right 
to use the license. The additional potential future milestone and royalty payments represent variable consideration that 
will be recognized when achievement is determined to be highly probable of not reversing.

As a consequence of the milestone proceeds paid to the Company under the license and collaboration agreement with 
ReproNovo, and in accordance with the terms of the 2015 asset purchase agreement with Novartis, the Company is 
also obligated to pay a proportion of cash milestone payments received. The Company therefore accrued for a payment 
to  Novartis  of  $0.1  million  (£0.1  million)  at  December  31,  2023.  No  revenues  were  recognized  in  respect  of  this 
agreement in the year ended December 31, 2022.

The Company's revenue is attributed to the operations of the Company in the U.K.

58

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Operating loss

7.
Operating loss is stated after charging:

Fees payable to the Company’s Auditors for the audit of the
consolidated financial statements - current auditor
Fees payable to the Company’s Auditors for the audit of the
consolidated financial statements - prior auditor
Fees payable to the Company’s Auditors for other services:
Audit of subsidiary financial statements - current auditor
Fees payable to the Company’s Auditors for other services:
Audit of subsidiary financial statements - prior auditor
Audit related assurance services - current auditor
Audit related assurance services - prior auditor
Other assurance services - current auditor
Depreciation of right-of-use assets
Depreciation (excluding right-of-use assets)
Amortization of intangible assets

Year ended December 31,
2022
2023
£'000s
£'000s

414

162

54

—
377
170
2
399
137
310

Employees

8.
The average monthly  number of persons employed by the Company during the year was:

By activity:
Administrative
Research and development

Total

Year ended December 31,
2022
2023
£’000s
£’000s

18
16

34

—

371

—

49
—
59
—
583
144
—

29
20

49

Total compensation costs for persons employed by the Company (including Directors) during the year was:

Included in research and development expenses:
Salaries
Social security costs
Pension contributions
Share-based payment expenses
Included in administrative expenses:
Salaries
Social security costs
Pension contributions
Share-based payment expenses

Year ended December 31,
2022
2023
£’000s
£’000s

3,393
580
101
731

3,614
458
65
3,249

4,590
456
78
1,083

4,478
606
124
2,779

Total

12,191

14,194

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Total compensation costs for Directors during the year was:

Salaries and fees
Benefits in kind
Pension contributions
Share-based payment expenses
Bonus

Total

Year ended December 31,
2022
2023
£’000s
£’000s

497
16
44
1,765
200

2,522

534
9
42
1,812
226

2,623

During  2023,  one  Director  was  a  member    of  a  defined  contribution  pension  scheme  (2022:  one).  Further  details 
concerning the remuneration of key management personnel is included in Note 26. In respect of directors'  remuneration, 
amounts are included in the detailed disclosures in the audited section of the Directors' Remuneration report on page 
26 , which are ascribed as forming part of these financial statements.

9.

Finance income, finance costs, changes in the fair value of financial instruments and other income and 
expenses

Finance income

Interest income on short-term deposits
Gain from modification of private placement loan notes
Total

Finance costs

Interest on convertible loan notes
Interest on lease liabilities
Discounting of other liabilities
Other
Total

Changes in the fair value  of financial instruments

Changes in the fair value of warrants – private placement
Changes in the fair value of warrants – bank loan
Total

Year ended December 31,
2022
2023
£'000s
£'000s

1,628
82
1,710

696
—
696

Year ended December 31,
2022
2023
£'000s
£'000s

(1,340)
(146)
(74)
(82)
(1,642)

(2,660)
(209)
—
(41)
(2,910)

Year ended December 31,
2022
2023
£'000s
£'000s

402
(195)
207

7,593
212
7,805

Other income and expenses
In  February  2022,  the  Company  received  a  milestone  payment  of  $2.0  million  (£1.5  million)  under  the  Navi  License 
Agreement  with  OncXerna.  An  associated  payment  was    made    to  the  former  shareholders  of  Mereo  BioPharma  5 

60

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

(formerly OncoMed). under the Contingent Value Rights Agreement (“CVR”) of a total of $0.9 million (£0.7 million), after 
deductions of costs, charges and expenditures, which resulted  in other income, net of £0.8 million.

10. Taxation

UK corporation tax R&D credit
Tax credit
Total

Year ended December 31,
2022
2023
£'000s
£'000s

1,036
429
1,465

1,296
601
1,897

U.K. income tax
The  Company  is  entitled    to  claim  tax  credits  in  the  United  Kingdom  under  the  U.K.  R&D  small  or  medium-  sized 
enterprise (“SME”) scheme, which provides additional taxation relief for qualifying expenditure on R&D activities, and  
includes an option to surrender a portion of tax losses arising from qualifying activities in return for a cash payment from 
HM Revenue & Customs (“HMRC”). In addition, the U.K. government is currently consulting on the potential replacement 
of the SME Program and RDEC Program with a single program, operating similarly to the RDEC Program, which may, 
inter alia, change the present treatment of sub-contracted R&D work and introduce different thresholds and caps on 
expenditure and relief. If enacted, the new program would be expected to have effect for expenditure incurred from April 
2024  onwards,  and  could  have  a  material  impact  on  the  quantum  of  R&D  relief  that  we  are  eligible  to  claim.  This 
announcement  also  saw  the  introduction  of  a  higher  rate  of  relief  for  loss-making  R&D-intensive  small  and  medium 
enterprises, the SME Intensive Scheme.

Companies claiming under the existing SME Intensive Scheme tax relief will be eligible for a higher payable credit rate 
if they meet the definition for R&D intensity. We will assess if we can claim under the new loss-making R&D-intensive 
SME Intensive Scheme for the accounting period ending December 31, 2024 and future periods, which will provide 
benefits consistent with those claimed under the current SME Programs.

U.S. income tax
During  the  year-ended  December  31,  2022,  the  Company  received  £0.8  million  related  to  Alternative  Minimum  Tax 
(“AMT”) credits, previously recognized as other taxes recoverable within the consolidated balance sheet. The Company 
generates R&D tax credits for U.S. federal and state  purposes. In respect  of these  R&D tax credits,  no deferred tax 
assets have been recognized in any years presented. As of December 31, 2023, the Company had an uncertain tax 
position of £2.3 million, representing approximately 20% of these historic R&D tax losses claimed.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Reconciliation of effective tax rate

Loss before income tax
Tax on profit at standard U.K rate of 23.52% (19%)
Expenses not deductible for income  tax purposes (permanent differences)
Income  not taxable
Temporary timing differences
R&D relief uplift
Tax rate changes
Losses (unrecognized)
Foreign  tax
Differences in overseas tax rates
Derecognition of deferred tax
Effects of carryback loss  relief
Adjustments in respect of prior years
Other
Tax credit/(charge) for the year

Deferred tax
The analysis of unrecognized deferred tax is set out below:

Year ended December 31,
2022
(Restated*)
£'000s

2023
£'000s

(34,647)
8,149
(518)
—
—
247
(1)
(6,203)
(35)
(173)
—
—
538
(539)
1,465

(35,134)
6,675
(783)
12
—
558
—
(4,810)
422
323
—
(649)
612
(463)
1,897

Year ended December 31,
2022
(Restated*)
£'000s

2023
£'000s

Losses
Loan relationships
U.S tax credits
R&D capitalization
Fixed assets
Share  options
Other
Temporary differences
Deferred tax asset (unrecognized)

51,817
443
11,715
3,568
14
1,039
19
10
68,625

The movement of recognized deferred tax is set out below:

Tax losses
£'000s
(60)
At January 1, 2023 (Restated*)
34
Recognized in income
(26)
Net deferred tax asset/(liability)
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

Intangible 
assets and 
right-of-use 
asset
£'000s
60
(34)
26

47,321
443
12,206
3,001
—
434
—
51
63,456

Total
£'000s
—
—
—

A deferred tax asset on losses has  been recognized up to the level of the deferred tax liability, resulting in a net deferred 
tax liability of £nil.

The remaining deferred  tax assets, as set out in the table  above, have not been  recognized as there is uncertainty 
regarding when suitable future profits against which  to offset the accumulated tax losses will arise.

62

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

U.K. deferred tax
The deferred tax assets have  not been recognized as there is uncertainty regarding when suitable future taxable profits 
against which to offset the accumulated tax losses will arise. There is no expiration date for the accumulated tax losses.

The standard rate of corporation tax applied to the reported profit/(loss) before tax is 23.52% (2022: 19%). The Finance 
Act 2021, which was substantively enacted on May 24, 2021, included provisions to increase the standard rate of U.K. 
corporation tax from 19% to 25%, effective from April 1, 2023. The standard rate of corporation tax 23.52% is the U.K. 
corporation tax rate of 19% from January 1, 2023 through April 1, 2023, and U.K. corporation tax rate of 25% for the 
remainder of 2023. U.K. deferred tax assets and liabilities have been measured at a rate of 25%.

At December 31, 2023, the Company had U.K. tax losses to be carried forward of approximately £51.7 million.

U.S.  deferred tax
U.S. deferred tax assets and liabilities are calculated at a blended rate of approximately 21%.

For  Mereo  BioPharma  5  (formerly  OncoMed),  with  respect  to  accumulated  tax  losses  carried  forward  prior  to  its 
acquisition by the Company, there is a change of control restriction which will limit the amount available in any one year.

At December 31, 2023, the Company had  U.S. federal tax losses to be carried forward of approximately £52.0 million, 
of  which  £14.3  million  can  be  carried  forward  indefinitely  and  £37.7  million  which  will  begin  to  expire  in  2024.  At 
December 31, 2023, the Company had U.S. state tax losses to be carried forward of approximately £0.1 million which 
begin to expire in 2027.

11. Loss per share

Basic loss per share is calculated by dividing the loss attributable for the year to ordinary equity holders of the Company 
by the weighted average number of ordinary shares outstanding during the year. Diluted loss per share is based on 
dividing the loss attributable for the year, adjusted for the effect of diluted ordinary shares, by ordinary share equivalents, 
which includes the weighted average number of ordinary shares outstanding and the effect of dilutive ordinary share 
equivalents.

Numerator – Basic earnings per share (£’000s):
Loss attributable to equity holders of the parent

Denominator – Basic earnings per share:
Weighted average number of ordinary shares
Loss per share  – basic (£)

Numerator – Diluted earnings per share  (£’000s):
Loss attributable to equity holders of the parent
Effect of dilutive ordinary shares
Numerator – Diluted earnings per share

Year ended December 31,
2022
2023
Restated*

(33,182)

(33,237)

659,453,921
(0.05)

603,196,403
(0.06)

(33,182)
—
(33,182)

(33,237)
—
(33,237)

Denominator – Diluted earnings per share:
Number of ordinary shares used for basic earnings per share
Weighted average effect of dilutive ordinary shares
Weighted average number of diluted ordinary shares outstanding
Loss per share – diluted (£)
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

659,453,921
—
659,453,921
(0.05)

603,196,403
—
603,196,403
(0.06)

For  the  years  ended  December 31,  2023  and  2022,  share  options,  restricted  stock  units,  performance  stock  units, 
convertible  loan  notes  and  warrants  were  anti-dilutive  as  they  would  have  decreased  the  loss  per  share  and  were 
excluded from the calculation of diluted loss per share. Therefore, the weighted average shares outstanding used to 
calculate both the basic and diluted loss per share was the same. 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Stock options to purchase ordinary shares
Restricted stock units
Performance stock units
Convertible loan notes (as converted to ordinary shares)
Convertible loan notes - private placement (as converted to ordinary shares)
Warrants to purchase ordinary shares (as converted to ordinary shares)

12. Property, plant and equipment

Year ended December 31,
2022
2023
38,864,740
54,751,240
—
2,446,125
—
6,690,750
17,010,137
15,657,825
41,048,784
—
147,431,351
2,487,816

Cost
At January 1, 2023
Additions
Disposals
Currency translation effects
At December 31, 2023
Accumulated depreciation
At January 1, 2023
Disposals
Depreciation for the year
At December 31, 2023
Net book value
At December 31, 2022
At December 31, 2023

Cost
At January 1, 2022
Additions
Disposals
Currency translation effects
At December 31, 2022
Accumulated depreciation
At January 1, 2022
Disposals
Depreciation for the year
At December 31, 2022
Net book value
At December 31, 2021
At December 31, 2022

Right-of-use
asset
(buildings)
£'000s

Leasehold
improve-
ments
£'000s

Office
equipment
£'000s

IT
equipment
£'000s

2,465
—
—
—
2,465

(1,088)
—
(399)
(1,487)

1,377
978

557
—
—
—
557

(219)
—
(95)
(314)

338
243

164
—
—
—
164

(76)
—
(21)
(97)

88
67

173
—
—
—
173

(145)
—
(21)
(166)

28
7

Right-of-
use
asset
(buildings)
£'000s

2,903
—
(451)
13
2,465

(1,025)
451
(514)
(1,088)

1,878
1,377

Right-of-

asset
(equipment)
£'000s

use Leasehold
improve-

IT
Office
ments equipment equipment
£'000s
£'000s
£'000s

295
—
(300)
5
—

(231)
300
(69)
—

64
—

557
—
—
—
557

(124)
—
(95)
(219)

433
338

173
7
(16)
—
164

(69)
16
(23)
(76)

104
88

180
3
(10)
—
173

(129)
10
(26)
(145)

51
28

Total
£'000s

3,359
—
—
—
3,359

(1,528)
—
(536)
(2,064)

1,831
1,295

Total
£'000s

4,108
10
(777)
18
3,359

(1,578)
777
727
(1,528)

2,530
1,831

In August 2022, the Company’s lease for office space in Redwood City, California expired, and certain equipment was 
disposed. 

64

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The Company leases office space and equipment for use in administrative and research and development activities. In 
the  year-ended  December 31,  2023,  the  Company  made  lease  payments  of  £0.6  million  (2022:  £0.9  million).  The 
maturity of lease liabilities as of December 31, 2023 are as follows:

Within 1 
year 
£'000s

Between 
1 and 3 
years 
£'000s

Between 
3 and 5 
years 
£'000s

Over 5 
years 
£'000s

Total 
£'000s

Maturity of lease liabilities

512

711

—

—

1,223

The maturity of lease liabilities as of December 31, 2022 are as follows:

Within 1 
year 
£'000s

Between 
1 and 3 
years 
£'000s

Between 
3 and 5 
years 
£'000s

Over 5 
years 
£'000s

Total 
£'000s

Maturity of lease liabilities

466

1,072

150

—

1,688

Further details on the movements within lease liability are included in Note 22.

13.

Intangible assets

Cost
At January 1, 2022 (restated*)
At December 31, 2022 (restated*)
Additions
Disposals
At December 31, 2023

Accumulated amortization
At January 1, 2022
At December 31, 2022
Amortization charge in the year
At December 31, 2023

Net book value
At December 31, 2022 (restated*)
At December 31, 2023

Acquired 
development 
programs
£'000s

20,156
20,156
1,166
(9,886)
11,436

—
—
(310)
(310)

24,116
11,126

*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

The  Company’s  strategy  is  to  acquire  and  develop  clinical-stage  development  programs  for  the  treatment  of  rare 
diseases.

An intangible asset of £1.2 million was recognized for the UCB/Amgen License in the year ended December 31, 2023 
reflecting  payments  under  the  agreement  that  are  not  contingent.  A  corresponding  liability  of  £1.2 million  was  also 
recognized.  The  license  is  amortized  on  a  straight-line  basis  over  its  useful  economic  life.  During  the  year  ended 
December 31, 2023, amortization expense of £0.3 million (2022: £nil) has been recorded within administrative expenses 
in the consolidated statement of comprehensive (loss)/income. 

On December 13, 2023, the Company and ReproNovo announced a global licensing agreement for the development 
and commercialization of leflutrozole. Under the terms of the global licensing agreement, ReproNovo will receive an 
exclusive  worldwide  license  to  develop  and  commercialize  leflutrozole.  As  a  result  of  the  agreement,  the  Company 
derecognized  the  £9.9 million  intangible  asset  related  to  leflutrozole,  which  was  recorded  as  cost  of  revenue  in  the 
consolidated statement of comprehensive (loss)/income.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

With the exception of the UCB/Amgen License which is amortized, the intangible assets remain under development and 
no amortization charge has been recognized.

14.

Impairment testing of acquired development programs not yet available for use

Acquired development programs not yet available for use are assessed annually for impairment. The carrying amount 
of acquired development programs is as follows:

December 31,

2023
£’000s

2022
Restated*
£’000s

BPS-804/UX143 (setrusumab)
MPH-966 (alvelestat)
BGS-649 (leflutrozole)
BCT-197 (acumapimod)

3,015
3,800
—
4,311

Total
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

11,126

2,159
3,800
9,886
4,311

20,156

The carrying amount of setrusumab intangible asset includes the UCB/Amgen License as described in Note 13.  

The  Company  considers  the  future  development  costs,  the  probability  of  successfully  progressing  each  program  to 
product  approval  and  the  likely  commercial  returns  after  product  approval,  among  other  factors,  when  reviewing  for 
indicators of impairment. The results of this testing did not indicate any impairment of the acquired products’ rights for 
the year ended December 31, 2023. Management believes that the likelihood of a materially different outcome  using 
different reasonably possible  assumptions for setrusumab and alvelestat is remote given the substantial headroom on 
these assets.

The acquired development programs are assets which are not used in commercialized products. These assets have not 
yet begun to be amortized but have been tested for impairment by assessing their value in use. Value in use calculations 
for each program are utilized to calculate the recoverable amount. The calculations use post-tax cash flow projections 
covering  the  period  through  product  development  to  commercial  sales  up  to  the  later  of  loss  of  patent  protection  or 
market exclusivity, which extend beyond five years from the balance sheet date.  Approved  products are assumed to 
be  out-licensed  such  that  the  Company  receives  upfront  payments,  milestone  receipts  and  royalties  on  commercial 
sales; therefore, the Company does not incur any costs of commercialization after out-licensing except when such terms 
are agreed.

Key assumptions for the value in use calculations are described as follows:

Development costs to obtain regulatory approval – costs are estimated net of any contributions expected from 
collaborative  arrangements  with  future  partners.  Management  have  developed  cost  estimates  based  on  their 
previous experience and in conjunction with the expertise of their clinical development partners;

Launch dates of products – these reflect management’s expected date of launch for products based on the timeline 
of development programs required to obtain regulatory approval. The assumptions are based on management’s 
and clinical development partners’ prior experience;

Probability  of  successful  development  –  management  estimates  probabilities  of  success  for  each  phase  of 
development based on industry averages and knowledge of specific programs;

Out-licensing signature fees, milestones and royalty rates on sales – management estimates these amounts based 
on  prior  experience  and  access  to  values  from  similar  transactions  in  the  industry,  which  are  collated  and 
accessible from specialist third-party sources;

Sales projections – these are based on management’s internal projections using external market data and market 
research commissioned by the Company;

•

•

•

•

•

66

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

•

•

•

Profit margins and other operational expenses – these are based on the Company’s internal projections of current 
product  manufacturing  costings,  with  input  from  manufacturing  partners  where  applicable,  and  estimates  of 
operating costs based on management’s prior industry experience;

Cash flow projections – for all assets, cash flows are assessed over an industry-standard asset life of 20 years; 
and

Discount rates – the discount rate is estimated on a post-tax basis reflecting the estimated cost of capital of the 
Company and is applied consistently across each of the acquired development programs. The cost of capital was 
determined to be 15.0% (2022: 15.0%).

Where  an  out-licensing  agreement  has  been  reached  with  a  third  party,  known  and  observable  inputs  replace 
management assumptions if available.

At this stage of product development, the key sensitivity for all development programs is the probability of successful 
completion of clinical trials in order to obtain regulatory approval necessary for commercial sales. 

15. Other receivables

Lease deposits
Insurance claim receivable
VAT recoverable
Other
Total

16. Cash and short-term deposits

Cash
Short-term deposits
Total

December 31,

2023
£'000s

2022
£'000s

482
1,532
471
124
2,609

293
—
362
107
762

December 31,

2023
£’000s

2022
£’000s

2,741
42,361
45,102

5,230
51,104
56,334

Short-term deposits are available immediately or within 90 days at inception and earn interest at the respective short- 
term deposit rates.

17. Trade and other payables

Trade payables
Social security and other taxes
Other payables
Total

December 31,

2023
£'000s

2022
£'000s

1,842
220
22
2,084

2,886
167
25
3,078

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Trade and other payables are non-interest bearing and have an average term of one month.

18. Provisions

December 31,

2023
£'000s

2022
(Restated*)
£'000s

Social security contribution on share options
Restructuring
Total
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

196
—
196

9
179
188

Social security 
contribution on 
vested share 
options £'000s

Restructuring 
£'000s

At January 1, 2022
Arising during the year, net
Increase in provisions due to the unwinding of the time value of money
Increase due to changes in foreign exchange rates
Decrease  due to a change in estimates relating to timelines and probabilities of 
contractual milestones being achieved (revision to intangible asset, see Note 
13)
At December 31, 2022
Arising/(released) during the year, net
Utilized during the year, net
Increase in provisions due to the unwinding of the time value of money
Decrease  due to changes in foreign exchange rates
Decrease  due to a change in estimates relating to timeline and probabilities of 
contractual milestones being achieved (revision to intangible asset, see Note 
13)
At December 31, 2023

—
9
—
—

—
9
187
—
—
—

—
196

—
179
—
—

—
179
—
(179)
—
—

—
—

The provision for social security contributions on share options is calculated based on the number of vested options 
outstanding at the balance sheet date. The timing of option exercises for vested options is at the discretion of the grantee. 
Cash outflows related to the provision would occur in the same period that an option is exercised. As the Company does 
not have an unconditional right to defer settlement of the liability, the provision has been classified as current. As the 
timing of cash outflows is dependent on the period in which employees exercise vested options, there is a degree of 
uncertainty as to when actual cash outflows will occur. The provision is based on the estimated taxable gain arising on 
exercise of the share options, using the best estimate of the market price at the balance sheet date.

In October 2022, the Company announced an updated operating plan, including a targeted reduction  in the employee 
base of up to 40% and a significant reduction in other costs. In connection with the implementation of the operating plan, 
restructuring costs primarily relating to employee severance and other termination benefits of £0.2 million were paid 
during the year and as of December 31, 2022, the remaining provision of £0.2 million was paid in 2023. Actual and 
expected timings of cash outflows were based on the details of the targeted reduction, with key assumptions consisting 
of estimated percentage of the reduction of the employee base.

68

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

19. Warrant liability

At January 1
Fair value changes during the year
At December 31

Current
Non-current
Total

December 31,

2023
£'000s

2022
£'000s

531
(207)
324

8,336
(7,805)
531

December 31,

2023
£'000s

2022
£'000s

—
324
324

402
129
531

The change in fair value of the warrant liability represents an unrealized gain in the years ended December 31, 2023 
and 2022.

Warrants – private placement
On June 3, 2020, the Company completed a £56 million private placement transaction which involved the issuance of  
ordinary  shares,  convertible  loan  notes  and  conditional  warrants  to  subscribe  for  161,048,366  ordinary  shares  (the 
“Warrants”) at a price of £0.348 per ordinary share.

The ordinary shares, the convertible loan notes and the Warrants were recognized as separate financial instruments. 
The warrants are classified as liabilities as the Company does not have an unconditional right to avoid redeeming the 
instruments for cash.  The fair value  of the warrants at inception was £4.1 million. The Warrants allowed for the exercise 
on a cash or cashless basis at the discretion of the warrant holder. 

As the Warrants expired on June 30, 2023, the fair value of the warrant liability was £nil as of December 31, 2023 (£0.4 
million  as  of  December 31,  2022).  The  decrease  in  the  fair  value  of  £0.4  million  was  recognized  as  a  gain  in  the 
consolidated statement of comprehensive (loss)/income. During the year-ended December 31, 2023, no warrants were 
exercised (2022: nil). 

Warrants – bank loan
As of December 31, 2023 and 2022, the former lenders of the Company have warrants outstanding to purchase a total 
of  1,243,908  ordinary  shares  at  an  exercise  price  of  £2.95  per  share  exercisable  until  August  2027  and  a  total  of 
1,243,908 ordinary shares at an exercise price of $0.4144 per share exercisable until October 2028. The warrants can 
be  exercised  on  a  cash  or  cashless  basis  at  the  discretion  of  the  warrant  holder;  therefore  the  number  of  shares 
purchased might vary if the cashless alternative is taken.

At December 31, 2023, the fair value of these warrants was £0.3 million (2022: £0.1 million). The increase in the fair 
value of £0.2 million was recognized as a loss in the consolidated statement of comprehensive (loss)/income. During 
the year ended December 31, 2023, no warrants were exercised (2022: nil). 

Total outstanding warrants
At  December 31,  2023,  a  total  of  2,487,816  liability-classified  warrants  are  outstanding  (2022:  147,431,351).  The 
warrants outstanding are equivalent to 0.4% of the issued ordinary share capital of the Company (2022: 24%).

The following table lists the weighted average inputs to the models used for the fair value of warrants:

Expected volatility (%)
Risk-free interest rate (%)
Expected life of warrants (years)
Market price of ADS ($)
Model used

December 31,

2023

2022

95
3.99
0.5
0.75
Black-Scholes Black-Scholes

102
3.36
5.2
2.31

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

20. Convertible loan notes

Novartis Loan Note
Loan Notes – private placement
Total
Current
Non-current

December 31,

2023
£'000s

2022
£'000s

3,916
—
3,916
—
3,916

4,449
6,636
11,085
11,085
—

Novartis Loan Note
On February 10, 2020, the Company entered into a convertible equity financing with Novartis Pharma (AG) (“Novartis”) 
under which Novartis purchased a £3.8 million convertible loan note (the “Novartis Loan Note”).

The Novartis Loan Note is convertible at a fixed price of £0.265 per ordinary share and originally bore an interest rate 
of 6% per annum with a maturity date of February 2023. Effective February 10, 2023, the maturity date of the Novartis 
Loan Note was extended to February 10, 2025 and the interest rate amended to 9%. The conversion feature was also 
extended to February 10, 2025 on the same terms. Interest accrued to the amendment date of £0.7 million and was paid 
in  cash.  In  addition,  warrants  to  purchase  2,000,000  ordinary  shares  were  issued  as  additional  consideration  for 
amending the terms of the convertible loan (see Note 21).

The amendments to the Novartis Loan Note have been treated as the extinguishment of the original instrument and the 
issuance of a new instrument. On the extinguishment date, the carrying value of the liability component of the original 
instrument of £3.8 million was  derecognized. At the same time, a new liability of £3.5 million was recognized which 
represents the fair value of the liability component of the new Novartis Loan Notes, net of fees and £0.3 million was 
recorded in equity to reflect the warrants and the conversion option embedded in the new Novartis Loan Notes.

Loan Notes – private placement
Loan  Notes  in  an  aggregate  principal  amount  of  £40.5  million  were  issued  on  June  3,  2020  as  part  of  the  private 
placement  transaction  (the  "Private  Placement  Loan  Notes")  and  became  convertible  upon  the  passing  of  the 
Resolutions. The Private Placement Loan Notes were classified as a financial liability on  initial  recognition. Non-closely 
related embedded derivatives relating to the conversion feature, a term-extension and change of control features were 
bifurcated and accounted for at FVTPL, with the debt host contract being measured at amortized cost.

The Private Placement Loan Notes bore interest at a rate of 6% per annum and had an initial maturity date of June 30, 
2023. The Private Placement Loan Notes were convertible into ordinary shares at the discretion of the holder at a fixed 
price of £0.174 per ordinary share and, if not converted by the initial maturity date, could have been extended for an 
additional seven years, but would have ceased to bear interest from any extension date. The Private Placement Loan 
Notes were initially recognized at their fair value of £38.6 million (debt host instrument in the amount of £26.7 million 
and the embedded derivative in the amount of £11.9 million, before transaction costs).

In 2020, between initial recognition and the passing of certain resolutions at the Company's General Meeting in 2020 , 
changes  in  the  fair  value  of  the  embedded  derivative  totaling  £63.2  million  were  recognized  as  an  expense  in  the 
consolidated statement of comprehensive (loss)/income.

The Private Placement Loan Notes were not convertible until these resolutions were passed. Following the passing of 
the resolutions, Private Placement Loan Notes in an aggregate principal amount of £21.8 million (together with accrued 
interest) were automatically converted into 125,061,475 ordinary shares. Accordingly, a reduction in interest bearing 
loans of £13.3 million together with the derecognition of the embedded derivative relating to the conversion feature of 
£41.6 million was recognized; no gain or loss was recognized on conversion. The remaining portion of the embedded 
derivative relating to the conversion feature attributable to the Private Placement Loan Notes outstanding of £33.5 million 
was  reclassified  to  equity  to  reflect  the  effective  change  in  the  terms  of  the  feature  following  the  passing  of  the 
Resolutions.

During the year ended December 31, 2022, the Company issued and allotted 40,020,280 ordinary shares at a price of 
£0.174  per share on conversion of the Private Placement Loan Notes. 

On May 31, 2023, the maturity date of the Private Placement Loan Notes was extended to August 3, 2023, with all other 
terms  remaining  unchanged.  The  maturity  date  extension  was treated  as  a  modification  with  a  modification  gain 
of £0.1 million recognized within finance income (see Note 3).

70

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

During the year ended December 31,2023, the Company issued and allotted 27,420,095 ordinary shares at a price of 
£0.174 per share on conversion of the Private Placement Loan Notes. On the revised maturity date on August 3, 2023, 
the  Company  paid  £2.6 million  to  fully  settle  the  outstanding  principal  and  accrued  interest  balance  on  the  Private 
Placement Loan Notes.

The movements in the carrying value of the liability component of the Loan Notes is included in the table below. Refer 
to Note 21 for details of Loan Notes converted  to equity.

January 1
Interest charge
Converted to equity
Redeemed
Modification gain
Capitalization of fees
December 31

21.

Issued capital and reserves

At January 1, 2022
Issued during the year
At December 31, 2022
Issued during the year
At December 31, 2023

December 31,

2023
£'000s

2022
£'000s

6,636
826
(4,805)
(2,564)
(82)
(11)
(0)

Ordinary 
shares 
Number

Ordinary 
share capital 
£'000s

584,908,239
40,020,280
624,928,519
76,288,570
701,217,089

1,755
120
1,875
229
2,104

10,613
1,981
(5,958)
—
—
—
6,636

Share 
premium 
£'000s

247,460
6,843
254,303
13,467
267,770

Since  January  1,  2022,  the  following  alterations  to  the  Company's  share  capital  have  been  made.  For  each  share 
issuance, ordinary shares of £0.003 in nominal value in the capital of the Company were issued.

•

•

•

•

During the year ended December 31, 2022, the Company issued and allotted 40,020,280 ordinary shares of £0.003 
in nominal value  in the capital of the Company at an exercise price of £0.174 per share on non-cash conversion 
of Loan Notes.

During the year ended December 31, 2023, the Company issued and allotted 501,380 ordinary shares upon the 
vesting of equity awards. 

During  the  year  ended  December  31,  2023,  the  Company  issued  and  allotted 27,420,095 ordinary  shares  of 
£0.003 in nominal value in the capital of the Company, at an exercise price of £0.174 per ordinary share on non-
cash conversion of Private Placement Loan Notes.

During  the  year  ended  December  31,  2023,  the  Company  issued  and  allotted 48,367,095 ordinary  shares  of 
£0.003 in nominal value in the capital of the Company for aggregate gross proceeds of $12.0 million (£9.3 million) 
through an “at-the-market” offering pursuant to an Open Market Sale Agreement with Jefferies LLC. 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Other capital reserves

Equity 
component 
of 
convertible 
loan notes 
£'000s

Share- 
based 
payments 
£'000s

Other 
warrants 
issued 
£'000s

Merger 
reserve 
£'000s

Other 
reserves 
£'000s

44

32,843

40,818

33,104

21,694

At January 1, 2022 (restated*)
Share-based payments expense during the 
year
Share options exercised
Issuance of warrants
Convertible loan notes
At December 31, 2022 (restated*)
Share-based payments expense during the 
3,991
year
(84)
Share options exercised
—
Issuance of warrants
—
Convertible loan notes
At December 31, 2023
29,381
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

3,862
(82)
—
—
25,474

—
—
—
(1,005)
31,838

—
—
—
374
32,212

—
—
—
—
40,818

—
—
—
—
40,818

—
—
41
—
155

—
—
70
—
114

—
—
—
—
33,104

—
—
—
—
33,104

Total 
£'000s

128,503

3,862
(82)
70
(1,005)
131,348

3,991
(84)
41
374
135,670

Share-based payments
The Company has one principal share-based incentive scheme under which options at market value to subscribe for 
the  Company’s  shares,  restricted  stock  units  ("RSUs")  and  performance  share  units  ("PSUs")  have  been  granted  to 
certain executives, non-executive directors (“NEDs”) and employees, including key management personnel, as part of 
their remuneration.

The share-based payment reserve is used to recognize (i) the value of equity settled share-based payments provided 
to employees, including key management personnel, as part of their remuneration and (ii) deferred equity consideration. 
Refer to Note 25 for further details.

Equity component of convertible loan instrument
The  convertible  loan  notes  issued  to  Novartis  are  a  compound  instrument  consisting  of  a  liability  and  an  equity 
component. The value of the equity component (cost of the conversion option) as at December 31, 2023 is £1.4 million 
(December 31, 2022: £1.1 million).

On June 30, 2020, the Private Placement Loan Notes in an aggregate principal amount of £21.8 million (together with 
accrued  interest)  were  automatically  converted    into  125,061,475  ordinary  shares.  This    resulted    in  £33.5    million 
recognized  in other reserves in equity as a difference between  the share  capital and  share premium recognized on 
conversion and the carrying value of the embedded derivative financial liability extinguished (see Note 20).

Other warrants issued

On October 8, 2018, the Group entered into a funding agreement with The Alpha-1 Project (“TAP”), which provided total 
payments of $0.4 million (£0.3 million), of which the final installment of $0.1million (less than £0.1 million) was received 
in May 2023. In exchange for funding, the Company issued warrants allowing TAP to subscribe for ordinary shares in 
the company. In 2023, the Company issued 408,730 warrants over ordinary shares and received funding of £0.1 million, 
of which  less than  £0.1 million  was  allocated to the equity  component. In 2022, the Company issued 1,101,683 
warrants over ordinary shares and received funding of £0.2 million, of which  less than  £0.1 million  was  allocated to 
the  equity    component.  The  total  value    of  the  equity    component  (consideration  received  for  the  warrants)  as  at 
December 31, 2023 is £0.2 million (2022: £0.1 million).

Under the agreement, TAP is potentially entitled to receive a payment equivalent to amounts received by Mereo (up to 
a  maximum  of  $400,000)  conditional  on  and  within  thirty  days  of  the  first  regulatory  approval  for  MPH-966.  The 
agreement is accounted for as a compound instrument that includes both debt and equity components. For each tranche 
of funding received, the consideration was allocated by calculating the fair value of the liability component and allocating 
the residual amount to the warrants . The amount allocated to the liability component is accreted back to the face value 

72

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

over the period to the earliest reasonable repayments date using the effective interest method. The amount allocated to 
the warrants was recognized in equity and is not subsequently remeasured.

Merger reserve
The consideration paid to acquire Mereo  BioPharma 5, Inc. was 24,783,320 ordinary shares with an acquisition date 
fair value of £40.9 million, based on the Company’s quoted share  price. The nominal value of the issued capital was 
£0.1 million with the excess, £40.8 million, classified within other capital reserves as a ‘Merger reserve’.

Other reserves
On June 30, 2020, the Company issued and allotted 125,061,475 ordinary shares of £0.003 in nominal value in the 
capital of the Company at a price of £0.174  per share  to investors following the partial conversion of the Loan  Notes. 
The  legal  proceeds  were  £21.8  million.  This  resulted  in  £33.1  million  recognized  in  other  reserves  as  a  difference 
between the carrying value of the financial liability extinguished and the legal proceeds.

Other reserves and accumulated losses

Year ended December 31,
2022
(Restated*)
£'000s

2023
£'000s

Other reserves
Accumulated losses
*See Note 4 for details regarding the restatement as a result of a voluntary change in accounting policy.

7,401
(362,340)

7,401
(329,158)

Other reserves represent a capital reduction undertaken in 2016 which created a reserve of £7.0 million. On June 3, 
2020, the Company issued and  allotted  89,144,630 ordinary  shares to investors. The difference between  the gross 
proceeds, £15.5 million, and the fair value of the consideration of the ordinary shares, £13.4 million, of £2.1 million, was 
recognized as a reduction to other reserves. During the year  ended December 31, 2021, 15,414,626 private placement 
warrants were exercised, resulting in a £2.4 million reduction in the warrant liability which was recognized as an addition 
to “Other reserves.” There have been no further amounts recognized in other reserves in 2023 or 2022.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

22. Changes in liabilities arising from financing activities

Carrying value at January 1, 2022
Financing cash flows
Non-cash changes
Converted during the year
Interest expense
Issuance of warrants
Changes in fair value
Changes in foreign exchange
Carrying value at December 31, 2022
Financing cash flows
Non-cash changes
Converted during the year
Interest expense
Issuance of warrants
Capitalization of fees
Modification gain
Changes in fair value
Changes in foreign exchange
Carrying value at December 31, 2023

Lease
liability

Novartis
loan
Note

Warrant
liability

Loan
notes –
private
placement

Other

Total

2,376
(937)

—
209
—
—
40
1,688
(611)

—
146
—
—
—
—
—
1,223

3,771
—

—
678
—
—
—
4,449
(711)

—
514
(336)
—
—
—
—
3,916

8,336
—

—
—
—
(7,805)
—
531
—

—
—
—
—
—
(207)
—
324

10,613
—

(5,958)
1,981
—
—
—
6,636
(2,564)

(4,805)
826
—
(11)
(82)
—
—
—

80
153

—
19
(70)
—
—
182
79

—
—
(40)
—
—
—
—
221

25,176
(784)

(5,958)
2,887
(70)
(7,805)
40
13,486
(3,807)

(4,805)
1,486
(376)
(11)
(82)
(207)
—
5,684

23. Financial and capital risk management and fair value measurement
Capital risk management
The  Company’s  objectives  when  managing  capital  are  to  safeguard  the  ability  to  continue  as  a  going  concern  and  
ensure  that sufficient capital is in place to fund the Company’s R&D activities and operations. The Company’s principal 
methods of adjusting the capital available are through issuing new shares, licensing and/or collaboration agreements or 
arranging  suitable  debt  financing.  The  Company’s  share    capital  and  share  premium  are  disclosed  in  Note  21.  The 
Company’s convertible loans are disclosed in Note 20. The Company monitors the availability of capital with regards to 
its committed and forecasted future expenditure on an ongoing basis.

The Company has an Employee Benefit Trust which holds ADSs to satisfy exercises of options under the Company’s 
share option schemes (see Note 25).

Financial risk management objectives and policies
The  Company  seeks  to  maintain  a  balance  between  equity  capital  and  convertible  debt  to  provide  sufficient  cash 
resources to execute the business plan. In addition, the Company maintains a balance between cash held on deposit 
and  short-term  investments  in  pound  sterling  and  other  currencies  to  reduce  its  exposure  to  foreign    exchange 
fluctuations in respect of its planned expenditure.

Company’s principal financial instruments comprise warrants, convertible loan notes and trade payables which arise 
directly from its operations. The Company has various financial assets, including receivables and cash and short-term 
deposits.

Interest rate risk
The Company’s policy in relation to interest rate risk is to monitor short and medium-term interest rates and to place 
cash on deposit for periods that optimize the amount of interest earned while maintaining access to sufficient funds to 
meet the cost of is operating activities and future research and development activities.

74

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The  Company’s  interest  payable  on  convertible  loan  notes  is  fixed.  Consequently,  there  is  no  material  exposure  to 
interest rate risk in respect of interest payable.

Credit risk
The  Company  is  dependent  on  a  number  of  third  parties  for  the  delivery  of  its  programs  and,  where  required,  pays 
upfront deposits and fees in advance of the delivery of services. The Company considers all of its material counterparties 
to be creditworthy and the credit risk for each of its major counterparties to be low, but continues to assess credit  risk 
as part of its management of these  third-party relationships. Financial instruments that subject the Company to credit 
risk consists primarily of cash and cash equivalents. The Company places cash and cash equivalents with established 
financial institutions with strong credit ratings The Company’s maximum exposure to credit risk for the components of 
the balance sheet at December 31, 2023 are the carrying amounts.

Liquidity risk
The Company’s policy is to maintain adequate cash reserves at highly rated banks and financial institutions and also 
seeks  to  invest  in  short-term  deposits  to  achieve  a  competitive  rate  of  return.  The  Company’s  liquid  resources  are 
invested with regard to the timing of payments to be made in the ordinary course of business, while monitoring its funding 
requirements through  preparation of short-term, mid-term and long-term forecasts.

The table below summarizes the maturity profile of the Company’s financial liabilities based on contractual undiscounted 
payments at December 31, 2023:

Leases
Trade and other payables
Accruals
Other liabilities

Within 1 
year
£’000s

611
2,084
4,292
560

Between
1 and 3 
years
£’000s

Between
3 and 5 
years
£’000s

764
—
—
599

—
—
—
—

Over 5 
years
£’000s

—
—
—
—

Total
£’000s

1,375
2,084
4,292
1,159

The table below summarizes the maturity profile of the Company's financial liabilities based on contractual undiscounted 
payments at December 31, 2022:

Within 1 
year
£’000s

Between
1 and 3 
years
£’000s

Between
3 and 5 
years
£’000s

Leases
Trade and other payables
Accruals
Other liabilities
The Company does not face a significant liquidity risk with regards to its lease liabilities.

1,222
—
—
—

611
3,078
4,491
515

152
—
—
—

Over 5 
years
£’000s

—
—
—
—

Total
£’000s

1,985
3,078
4,491
515

The Company may incur potential payments upon  achievement of clinical, regulatory and commercial milestones, as 
applicable, or royalty payments that may be required to be made under license agreements the Company entered into 
with various entities pursuant to which the Company has in-licensed certain intellectual property, including license and 
asset purchase agreements with Novartis, AstraZeneca, and UCB/Amgen. Due to the uncertainty of the achievement 
and timing of the events requiring payment under these agreements, the amounts to be paid are contingent at this time 
and no such amounts are included herein. 

The  contingent  amounts  included  in  the  2015  asset  purchase  with  Novartis  comprise  amounts  equal  to  ascending 
specified percentages of tiered annual worldwide net sales (beginning at high single digits and reaching into double 
digits  at  higher  sales)  of  products  that  include  the  assets  acquired  under  the  agreement.  Additionally,  the  Company 
agreed that in the event it transfers, licenses, assigns or leases all or substantially all of its assets, it will pay Novartis a 
percentage of the proceeds of such transaction. The payment of a percentage of proceeds is not payable with respect 
to  any  transaction  involving  equity  interests  of  Mereo  BioPharma  Group  plc,  a  merger  or  consolidation  of  Mereo 
BioPharma Group plc, or a sale of any assets of Mereo BioPharma Group plc.

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The contingent amounts included in the license agreement with AstraZeneca consist of up to $115.5 million and the 
issuance of additional shares to AstraZeneca for licensed products containing alvelestat. In addition, the Company has 
agreed to make payments to AstraZeneca based on specified commercial milestones of the product. The Company has 
also agreed to pay a specified percentage of sub-licensing revenue to AstraZeneca and to make royalty payments to 
AstraZeneca equal to ascending specified percentages of tiered annual worldwide net sales by the Company of licensed 
products (subject to certain reductions), ranging from the high single digits to low double digits.

Foreign currency and market risk
Foreign currency risk arises from R&D activities, commercial transactions and recognized assets and liabilities in foreign 
currencies, with the principal currency exposure being fluctuations in pound sterling, U.S. dollars and Euros.

The functional currency of the Company and all subsidiaries is pound sterling, except for Mereo BioPharma 5 (formerly 
OncoMed). whose functional currency is U.S. dollars. The Company incurs expenditures in foreign currencies and is 
exposed to the risks of foreign exchange rate movements, with the impact recognized in the consolidated statement of 
comprehensive income/(loss).

Funding secured in 2023, 2021 and 2020 was principally in U.S dollars and, although the Company currently has no 
revenue from product sales, proceeds received from upfront milestones under its licensing and collaboration agreements 
are denominated in U.S. dollars, while the majority of operating costs are denominated in pound sterling, U.S. dollars 
and Euros.

The  Company  seeks  to  minimize  this  exposure  by  passively  maintaining  foreign  currency  cash  balances  at  levels 
appropriate  to  meet  foreseeable  foreign  currency  expenditures.  The  Company  does  not  hedge  potential  future  cash 
flows or income.

The table below shows analysis of the pound sterling equivalent of year-end cash and short-term deposits balances by 
currency:

Pound  sterling
U.S. dollars
Euro
Swiss francs
Total

December 31,

2023
£’000s

2022
£’000s

27,346
17,732
20
4
45,102

52,812
2,484
1,029
9
56,334

The table below shows those transactional exposures that give rise to net currency gains and losses recognized in the 
consolidated  statement  of  comprehensive  income/(loss).  Such  exposures  comprise  the  net  monetary  assets  and 
monetary liabilities of the Company that are not denominated in the functional currency  of the relevant  subsidiary. As 
at December 31, these exposures were as follows:

Net foreign currency assets/(liabilities)
U.S. dollars
Euro
Swiss francs
Total

December 31,

2023
£’000s

2022
£’000s

16,914
(257)
(12)
16,645

872
768
(179)
1,461

The most significant currencies in which the Company transacts, other than  pound  sterling, are the U.S. dollar and the 
Euro. The Company also transacts in other currencies as necessary.

76

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

The following table illustrates the sensitivity to a 10% weakening or strengthening, which the Company determined was 
an  appropriate  reasonably  possible  movement,  in  the  year-end  rate  in  the  U.S.  dollar  and  the  Euro  against  pound 
sterling:

December 31, 2023

Loss before tax
Equity

December 31, 2022

Loss before tax
Equity

Financial instruments by category

Financial assets
Cash and short-term deposits
Other receivables
Total financial assets
Financial liabilities
Provisions
Other liabilities
Convertible loan notes
Warrant liability
Trade and other payables
Accruals
Lease liability
Total financial liabilities

U.S. dollar
£’000s

Euro
£’000s

(1,538)
(1,538)

U.S. dollar
£’000s

Euro
£’000s

(79)
(79)

23
23

(70)
(70)

Fair value through
profit or loss
December 31,

2023
£’000s

2022
Restated*
£’000s

Amortized cost
December 31,

2023
£’000s

2022
£’000s

—
—
—

—
—
—
324
—
—
—
324

—
—
—

—
—
—
531
—
—
—
531

45,102
606
45,708

196
611
—
—
1,864
4,292
1,223
8,186

56,334
400
56,734

187
—
11,085
—
2,911
4,491
1,688
20,362

The carrying values of financial assets and financial liabilities recorded at amortized cost in the consolidated financial 
statements are approximately equal to their fair values.

Fair value hierarchy

Liabilities measured at fair value

Warrant liability (Note 19)

Date of 
valuation
December 31, 
2023

Quoted 
prices
in active
markets
(Level 1)

Significant
Significant
observable unobservable
inputs
(Level 3)

inputs
(Level 2)

Total

£’000s

£’000s

£’000s

£’000s

324

—

324

—

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Liabilities measured at fair value

Warrant liability (Note 19)

Date of 
valuation
December 31, 
2022

Quoted 
prices
in active
markets
(Level 1)

Significant
Significant
observable unobservable
inputs
(Level 3)

inputs
(Level 2)

Total

£’000s

£’000s

£’000s

£’000s

531

—

129

402

There were no transfers between Level 1 and Level 2 during the years ended December 31, 2023 and 2022.

Management assessed that the fair values of cash and short-term deposits, other receivables, trade payables and 
other current liabilities approximate their carrying amounts largely due to the short-term maturities of these 
instruments.

The following table presents the changes in Level 3 items for the years ended December 31, 2023 and December 31, 
2022.except for the CVR liability, which was £nil in all periods presented.

January 1, 2022
Change in fair value
December 31, 2022
Change in fair value
December 31, 2023
Warrant liabilities 

Warrant
liability
£’000s

7,995
(7,593)
402
(402)
—

The  fair  value  of  the  warrant  liability  is  estimated  using  a  Black-Scholes  model,  taking  into  account  appropriate 
amendments  to  inputs  in  respect  of  volatility,  remaining  expected  life  of  the  warrants  and  rates  of  interest  at  each 
reporting date.

CVR liability

The fair value of the CVR liability is estimated by discounting the expected  future cash flows under the agreement. At 
December 31, 2023, the Company estimates the fair value of the CVR liability to be nil (2022: nil). CVR payments of 
£0.7 million in 2022 and £0.4 million in 2020 were made relating to the Navi milestones received from OncXerna. The 
fair value is based on a risk adjusted, probability-based scenario. Under this approach the likelihood of future payments 
being  made  to  the  former  shareholders  of  Mereo  BioPharma  5  (formerly  OncoMed)  under  the  CVR  arrangement  is 
considered. The estimate will not change over time as the agreement expires on April 23, 2024.

The significant unobservable inputs used in the fair value  measurements categorized within Level 3 of the fair value 
hierarchy, together with a quantitative sensitivity analysis as at December 31, 2023 and 2022 are as follows:

Valuation 
technique

Discounted 
cash flow

Significant 
unobservable 
inputs

Input range 
(weighted 
average)

Ongoing 
uncertainty in 
the clinical 
development 
of the Navi 
product

Sensitivity of the input to 
fair value

Total potential future payments 
relating to the contingent 
consideration liability on a 
gross, undiscounted basis are 
approximately $80 million

CVR liability

78

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Regulatory 
approval and 
commercial-
ization risks

Warrant liability related to the 
private placement

Black-Scholes 
model

Expected
volatility

2023: n/a

2022: 95.5%

Sensitivity of the input to fair 
value is primarily driven by 
uncertainty in the clinical 
development of the Navi 
product. Future potential 
payments under the CVR 
arrangement are contingent on 
i) future development 
milestones and ii) future sales 
of the Navi product, following 
regulatory approval and 
commercialization. In January 
2020, the Company entered 
into the license agreement as 
detailed in Note 13. Although 
pursuant to the license 
agreement the Company is 
entitled to additional payments 
of up to $302 million, the CVR 
arrangement is near expiry, 
and therefore the probability in 
respect of any milestone and 
royalty payments under the 
license agreement is assumed 
to be zero.

The warrants expired during 
2023, therefore the value was 
£nil.
Volatility was estimated by 
reference to the 0.4 years 
historical volatility of the 
historical share price of the 
Company, matching the 
maturity of the instrument.  If 
the volatility is decreased to 
91.8% based on 3-month 
historical volatility, the carrying 
value of the warrants as of 
December 31, 2022 would 
decrease to £0.3 million.

24. Commitments and contingencies
Each  of  Mereo  BioPharma  1  Limited,  Mereo  BioPharma  2  Limited  and  Mereo  BioPharma  3  Limited  (together,  the 
“Subsidiaries”) issued to Novartis loan notes (which were assigned by Novartis to the Company in exchange for ordinary 
shares  pursuant  to  the  Subscription  Agreement)  and  each  of  the  Subsidiaries  agreed  to  make  future  payments  to 
Novartis comprising amounts equal to ascending specified percentages of tiered annual worldwide net sales (beginning 
at  high  single  digits  and  reaching  into  double  digits  at  higher  sales)  by  such  Subsidiary  of  products  that  include  the 
assets  acquired.  The  levels  of  ascending  percentages  of  tiered  annual  worldwide  net  sales  are  the  same  for  each 
Subsidiary under the respective Purchase Agreements. In accordance with the accounting polices described in Note 2, 
no liability is recognized within the consolidated balance sheet related to potential future payments to Novartis. If any 
amounts become due in the future, they will be recognized as a liability within the consolidated balance sheet. 

Each  Subsidiary  further  agreed  that  in  the  event  it  transfers,  licenses,  assigns  or  leases  all  or  substantially  all  of  its 
assets, it will pay Novartis a percentage of the proceeds of such transaction. The Company will retain the majority of the 
proceeds from such a transaction. Such percentage is the same for each Subsidiary under the respective Purchase 
Agreements. The payment of a percentage of proceeds is not payable with respect to any transaction involving equity 

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

interests of Mereo BioPharma Group plc, a merger or consolidation of Mereo BioPharma Group plc, or a sale of any 
assets of Mereo BioPharma Group plc.

In October 2017, the Company’s wholly owned subsidiary Mereo BioPharma 4 Limited entered into an exclusive license 
and option agreement (“the License Agreement”), to obtain from AstraZeneca an exclusive worldwide, sub-licensable 
license under AstraZeneca’s intellectual property rights relating to alvelestat, with an option to acquire such intellectual 
property rights following commencement of a pivotal trial and payment of related milestone payments (“the Option”), 
together with the acquisition of certain related assets. Upon entering into the License Agreement, the Company made a 
payment of $3.0 million and issued 490,798 ordinary shares to AstraZeneca, for an aggregate upfront payment equal to 
$5.0  million.  In  connection  with  certain  development  and  regulatory  milestones,  the  Company  has  agreed  to  make 
payments of up to $115.5 million in the aggregate and issue additional shares to AstraZeneca for licensed products 
containing  alvelestat.  In  addition,  the  Company  has  agreed  to  make  payments  to  AstraZeneca  based  on  specified 
commercial milestones of the product. The Company has also agreed to pay a specified percentage of sub-licensing 
revenue to AstraZeneca and to make royalty payments to AstraZeneca equal to ascending specified percentages of 
tiered annual worldwide net sales by the Company of licensed products (subject to certain reductions), ranging from the 
high single digits to low double digits. Royalties will be payable on a licensed-product-by-licensed-product and country-
by-country basis until the later of ten years after the first commercial sale  of such licensed product in such country and 
expiration of the last patent covering such licensed product in such country that would be sufficient to prevent generic 
entry.  The  Company  has  agreed  to  use  commercially  reasonable  efforts  to  develop  and  commercialize  at  least  one 
licensed product.

The License Agreement will expire on the expiry of the last-to-expire royalty term with respect to all licensed products. 
Upon the expiration of the royalty term for a licensed product in a particular country, the licenses to the Company for 
such product in such country will become fully paid and irrevocable. Prior to exercise of the Option, if at all, the Company 
may terminate the License Agreement upon prior written notice. Either party may terminate the agreement upon prior 
written notice for the other party’s material breach  that remains uncured for a specified period of time or insolvency.

The Company enters into contracts in the normal course of business with contract research organizations (“CROs”), 
contract  manufacturing  organizations  (“CMOs”)  and  other  third  parties  to  assist  in  the  performance  of  research  and 
development  activities  and  other  services  and  products  for  operating  purposes.  The  contracts  with  CROs  generally 
provide for termination on notice, and therefore, are cancellable contracts and not included herein. The Company has 
manufacturing commitments with CMOs of £3.3 million as of December 31, 2023 (2022:  £0.9 million).

25. Share-based payments

The Company makes share based compensation awards through two currently active approved plans, although fully 
vested awards made under previous plans are still outstanding. Share-based compensation expense arises solely in 
respect of awards made under these two active plans as follows:

2019 Equity Incentive Plan
2019 NED Equity Incentive Plan
Total

Year ended December 31,

2023
£’000s

2022
£’000s

3,295
696
3,991

3,149
713
3,862

The majority of awards that were exercised in 2023 and 2022 were net share settled such that the Company withheld 
shares with a value equivalent to the exercise price and the employees’ obligation for the applicable income and other 
employment taxes, and remitted these amounts to the appropriate tax authorities. The remaining shares delivered upon 
exercise by employees were satisfied by delivering shares from the Employee Benefit Trust. Shares delivered upon 
exercises by non-executive directors were satisfied by issuing new shares.

2019 Equity Incentive Plan (“EIP”)

The 2019 EIP was adopted on April 4, 2019, and subsequently amended on February 3, 2020 and January 15, 2021. 
The EIP authorizes the grant of a variety of types of share awards over the Company’s ADSs to executives and 
employees. The Company has chosen to award the following instruments under the EIP:

Market Value Options (“Options”) 
Options permit the recipient to purchase ADSs at an exercise price equal to the market price of the underlying ADSs 

80

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

on the date of grant. Options issued under the EIP have a contractual term of 10 years and vest over four years, with 
one-fourth of the award vesting on the first anniversary of the grant date and the remainder vesting in equal monthly 
installments over the three-year thereafter. No performance conditions apply to such Options.

A summary of the Company’s Options activity and related information under the EIP for 2023 and 2022 is as follows. 
All outstanding Options are expected to vest:

At January 1
Granted
Forfeited
Expired
Exercised
At December 31
Exercisable at December 31

2023

2022

Number of 
options
(ADSs)

Weighted 
Average 
Exercise Price 
($)

Number of 
options
(ADSs)

Weighted 
Average 
Exercise Price 
($)

6,857,861
4,874,300
(1,324,809)
(751,672)
(60,519)
9,595,161
3,425,209

2.15
1.03
1.42
2.82
1.57
1.63
2.27

3,943,702
4,126,400
(1,164,197)
(48,044)
—
6,857,861
2,082,027

2.88
1.38
1.83
3.97
—
2.15
2.95

Options outstanding as of December 31, 2023 had an exercise price of between $0.51 and $5.40 per ADS.

At December 31, 2023, the weighted average contractual life of options outstanding was 8.1 years (2022: 7.9 years) 
and for vested options was 7.1 years (2022: 6.2 years).

The fair value of each option is estimated on the date of grant using the Black-Scholes option pricing model based on 
the following weighted average assumptions:

Market price of ADSs ($)
Risk-free interest rate (%)
Expected life (years)
Expected volatility (%)
Expected dividends

2023

2022

1.03
3.48
10
98
—

1.38
1.83
10
96
—

The expected volatility assumption is calculated by reference to the historical volatility of an appropriate peer group of 
companies for a period equal to the expected term of the Option. The grant date fair value is recognized over the 
requisite service period using the accelerated graded-vesting attribution method.

Restricted Stock Units (“RSUs”)
RSUs were first awarded in 2023 and each RSU entitles the holder a conditional right to receive an ADS at no cost 
upon the completion of the applicable vesting period. RSUs granted under the EIP vest over three years with one-third 
of the awards vesting on the first anniversary of the grant date and the remainder vesting in four equal six-monthly 
installments thereafter. Upon vesting of the RSUs, the Company issues the requisite ADSs, a portion of which are sold 
to satisfy the resulting withholding tax obligations, and the remaining ADSs are delivered to the holder. RSUs have a 
maximum contractual life of 3.0 years.

A summary of the Company’s RSU activity and related information under the EIP for 2023 is as follows. As at 
December 31, 2023 no RSUs were vested but all outstanding RSUs are expected to vest:

At January 1, 2023
Granted
Cancelled
At December 31, 2023

Number of RSUs
(ADSs)

Weighted Average 
Grant Date Fair 
Value ($)

—
679,225
(190,000)
489,225

—
1.03
1.01
1.03

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

At December 31, 2023, the weighted average remaining period of RSUs outstanding was 2.1 years.

The fair value of each RSU was calculated by reference to the value of the shares awarded. The grant date fair value 
is recognized over the vesting period using the accelerated graded-vesting attribution method.

Performance Share Units (PSUs)
PSUs were first awarded in 2023 and each PSU entitles the holder a conditional right to receive an ADS at no cost 
upon satisfaction of four escalating ADS price performance targets over a two year performance period following the 
date of grant. A summary of the Company’s PSU activity and related information under the EIP for 2023 is as follows. 
At December 31, 2023 no PSUs were vested.

At January 1, 2023
Granted
Cancelled
At December 31, 2023

Number of PSUs
(ADSs)

Weighted Average 
Grant Date Fair 
Value ($)

—
1,543,150
(205,000)
1,338,150

—
0.61
0.61
0.61

At December 31, 2023, the weighted average contractual life of PSUs outstanding was 1.1 years. These awards were 
valued using a Monte Carlo model with the following key inputs:

Market price of ADSs ($)
Risk-free interest rate (%)
Expected life (years)
Expected volatility (%)
Expected dividends

2023

1.01
4.14
1
106
—

The grant date fair value is recognized over the expected life using the straight-line attribution method.

2019 Non-Executive Director Equity Incentive Plan (“NED EIP”)

The 2019 NED EIP was adopted on April 4, 2019, and subsequently amended on February 3, 2020 and January 15, 
2021. The NED EIP authorizes the grant of a variety of types of share awards over the Company’s ADSs to non-
executive directors. The Company has chosen to award the following instruments under the EIP:

Options 
Options permit the recipient to purchase ADSs at an exercise price equal to the closing price of the Company’s ADSs 
on the previous trading day. Options issued under the NED EIP have a contractual term of 10 years and vest monthly 
over one year. There are no performance conditions. A summary of the Company’s Option activity and related 
information under the NED EIP for 2023 and 2022 is as follows, all outstanding Options are expected to vest:

2023

2022

Number of 
options
(ADSs)

Weighted 
Average 
Exercise Price 
($)

Number of 
options
(ADSs)

Weighted 
Average 
Exercise Price 
($)

915,087
440,000
—
1,355,087
1,281,751

2.00
0.94
—
1.66
1.70

421,791
535,488
(42,192)
915,087
832,584

2.90
1.22
1.01
2.00
2.09

At January 1
Granted
Cancelled
At December 31
Exercisable at December 31

82

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Options outstanding as of December 31, 2023 had an exercise price of between $0.51 and $5.40 per ADS.

At December 31, 2023, the weighted average contractual life of options outstanding was 8.0 years (2022: 8.5 years) 
and for vested Options was 7.9 years (2022: 8.4 years).

The fair value of each option is estimated on the date of grant using the Black-Scholes option pricing model based on 
the following weighted average assumptions:

2023

2022

1.22
Market price of ADSs ($)
1.96
Risk-free interest rate (%)
10
Expected life (years)
96
Expected volatility (%)
Expected dividends
—
The Expected volatility assumption is calculated by reference to the historical volatility of an appropriate peer group of 
companies for a period equal to the expected term of the Option. The grant date fair value is recognized over the 
vesting period using the accelerated graded-vesting attribution method.

0.94
3.36
10
98
—

Deferred Restricted Stock Units (“DRSUs”)
DRSUs were granted to NEDs who elected to receive them instead of annual cash compensation for the year. Each 
DRSU entitles the holder to receive an ADS at no cost upon the completion of the vesting period. DRSUs granted 
under the NED EIP vest in equal monthly installments over the plan year. Upon vesting, DRSUs may not be exercised 
until 180 days after separation of service but have no specified contractual term. 

A summary of the Company’s DRSU activity and related information under the EIP for 2023 and 2022 is as follows. At 
December 31, 2023 all DRSUs are expected to vest:

At January 1, 2022
Granted
At December 31, 2022
Granted
Issued
At December 31, 2023
Issuable

Number of DRSUs
(ADSs)

—
348,044
348,044
482,214
(100,276)
729,982
689,837

The fair value of each DRSU was calculated by reference to the value of the shares awarded. The grant date fair 
value is recognized over the vesting period using the straight-line method.

Previous Share Option Plans

Mereo previously granted options to employees under two separate plans, the Mereo BioPharma Group Limited Share 
Option Plan (the “2015 Plan”) and the Mereo Share Option Plan (the “Share Option Plan”). No awards have been 
granted under either of these plans since 2017 and following the introduction of the EIP and the NED EIP, no further 
awards are envisaged.

All awards made under these plans became fully vested, with all compensation cost fully recognized, before  
December 31, 2021. A summary of the awards still outstanding under the plans is as follows:

At January 1, 2021
Expired
At December 31, 2022
Expired
At December 31, 2023

Number of options
(ADSs)

Weighted Average 
Exercise Price ($)

1,924,331
(240,776)
1,683,555
(111,197)
1,572,358

10.45
16.31
9.63
15.94
9.22

MEREO BIOPHARMA GROUP PLC
NOTES TO THE CONSOLIDATED FINANCIAL STATEMENTS

Options outstanding as of December 31, 2023 had an exercise price of between $8.63 and $21.75 per ADS.

At December 31, 2023, the weighted average contractual life of options outstanding and vested was 1.8 years (2022: 
2.4 years).

26. Related party disclosures
Compensation of key management personnel of the Company
The remuneration of key management personnel of the Company is set out below in aggregate:

Short-term benefits
Post-employment benefits
Share-based payment charge
Total

Year ended December 31,
2022
2023
£’000s
£’000s

3,033
118
1,958
5,109

3,699
158
3,043
6,900

The amounts disclosed in the table above are the amounts recognized as an expense during each reporting period for 
individuals who were deemed to be  key management personnel for the period they were deemed to be key management 
personnel.

During 2023, key management personnel included the executive director (the Chief Executive Officer), non-executive 
directors, the Chief Financial Officer, the General Counsel, the Chief Business Officer, Chief Scientific Officer, the Chief 
Patient Access and Commercial Planning, the Senior Vice President Clinical Development, and Senior Vice President 
and Therapeutic Head.

As of December 31, 2023, the key management personnel of the Company consisted of the executive director (the Chief 
Executive Officer), non-executive directors, the Chief Financial Officer, the General Counsel, the Chief Scientific Officer, 
and the Chief Patient Access and Commercial Planning.

Employee Benefit Trust
In 2016 the Company set up an Employee Benefit Trust (“EBT”). The EBT holds ADSs' to satisfy the exercise of options 
under the Company’s share-based incentive schemes (see Note 25).

No funding was loaned to the EBT by the Company during the year ended December 31, 2023 or 2022. During the 
years ended December 31, 2023 and 2022, no ordinary shares were purchased by the EBT. A total of 15,926  ADSs 
held by the EBT were used in the year-ended December 31, 2023 to satisfy the exercise of options under the Company’s 
share-based  incentive  schemes  (2022:  15,645).  As  of  December 31,  2023,  the  EBT  holds  184,680  ADSs  (2022: 
200,606) along with  £17,241 in cash (2022: £17,741).

84

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: COMPANY BALANCE SHEET

Assets
Non-current assets
Property, plant and equipment
Investments

Current assets
Prepayments
Other receivables
Cash and short-term deposits

Current liabilities
Trade and other payables
Current tax liabilities
Intercompany payable
Accruals
Lease liability
Provisions
Convertible loan notes
Warrant liability
Other liabilities

Net current liabilities
Total assets less current liabilities
Non-current liabilities
Convertible loan notes
Warrant liability
Lease liability
Provisions
Other liabilities

Net assets
Equity
Share capital
Share premium
Other capital reserves
Other reserves
Employee Benefit  Trust shares
Accumulated losses
Total equity shareholders’ funds

Notes

6
4

5

8
7
9

7
9

10
10
10
10
12

As at December 31,

2023
£'000s

1,294
164,856
166,150

1,169
2,296
44,969
48,434

1,567
—
10,736
3,097
512
182
—
—
19
16,113
32,321
198,471

3,916
324
711
—
221
5,172
193,299

2022
£'000s

1,823
172,369
174,192

2,092
656
56,098
58,846

2,696
418
16,441
2,465
466
9
11,085
402
—
33,982
24,864
199,056

—
129
1,222
—
182
1,533
197,523

2,104
267,770
137,001
7,401
(974)
(220,003)
193,299

1,875
254,303
132,680
7,401
(1,058)
(197,678)
197,523

The accompanying notes form an integral part of these financial statements.

The Company has  taken advantage of the exemption permitted by Section 408 of the Companies Act 2006 not to present an income statement for 
the year. The Company’s loss for the financial year ended December 31, 2023 was £22.3 million (2022: loss of £38.0 million).

The financial statements on page 85  to 86 were approved by the Board of Directors on April 24, 2024 and signed on its behalf by:

Dr. Denise Scots-Knight
Director
April 25, 2024
Company number:  09481161 (England and Wales)

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: COMPANY STATEMENT OF CHANGES IN EQUITY

At December 31, 2021

Loss for the year
Share-based payments
Exercise of share options
Convertible loan notes
Issuance of warrants

At December 31, 2022

Loss for the year
Share-based payments
Vesting of deferred restricted stock units
Exercise of share options
Issuance of ordinary shares
Convertible loan notes
Issuance of warrants

Issued 
capital
£'000s

Share 
premium
£'000s

Other 
capital 
reserves
£'000s

Employee 
Benefit 
Trust
£'000s

Other 
reserves
£'000s

Accum- 
ulated 
losses
£'000s

Total 
equity
£'000s

1,755

247,460

129,835

(1,140)

7,401

(159,708)

225,603

—
—
—
120
—

—
—
—
6,843
—

—
3,862
(82)
(1,005)
70

—
—
82
—
—

—
—
—
—
—

(37,970)
—
—
—
—

(37,970)
3,862
—
5,958
70

1,875

254,303

132,680

(1,058)

7,401

(197,678)

197,523

—
—
2
—
145
82
—

—
—
—
—
8,778
4,689
—

—
3,991
—
(84)
—
373
41

—
—
—
84
—
—
—

—
—
—
—
—
—
—

(22,325)
—
—
—
—
—
—

(22,325)
3,991
2
—
8,923
5,144
41

At December 31, 2023

2,104

267,770

137,001

(974)

7,401

(220,003)

193,299

The accompanying notes form an integral part of these financial statements.

86

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: NOTES TO THE COMPANY FINANCIAL STATEMENTS

1. Material accounting policies
1.1 Basis of preparation
These financial statements were prepared in accordance with Financial Reporting Standard 101 Reduced Disclosure 
Framework (FRS 101) and the Companies Act 2006.

In  preparing  these  financial  statements,  the  Company  applies  the  recognition,  measurement  and  disclosure 
requirements  of  International  Financial  Reporting  Standards  but  makes  amendments  where  necessary  in  order  to 
comply with the Companies Act 2006 and set out below where FRS 101 disclosure exemptions has been taken.

Under Section 408(4) of the Companies Act 2006, the Company is exempt from the requirement to present its own profit 
and loss account.

In  these  financial  statements,  the  Company  has  applied  the  exemptions  available  under  FRS  101  in  respect  of  the 
following disclosures:

•

•

•

•

•

•

Presentation of a cash flow statement and related notes;

Comparative period reconciliations for share capital, tangible fixed assets and intangible assets;

Transactions with wholly owned subsidiaries;

The effects of new but not yet effective IFRSs;

The compensation of key management personnel; and

Required disclosures relating to capital management.

As  the  consolidated  financial  statements  of  Mereo  BioPharma  Group  plc  include  the  equivalent  disclosures,  the 
Company has also taken the exemptions under FRS 101 available in respect of the following disclosures:

•

•

•

•

IFRS 2 (Share-Based Payments) in respect of Group-settled share-based payments;

Certain disclosures required by IAS 36 (Impairment of Assets);

Certain disclosures required by IFRS 13 (Fair Value Measurement);

Certain disclosures required by IFRS 7 (Financial Instruments Disclosures).

The  Company  proposes  to  continue  to  adopt  the  reduced  disclosure  framework  of  FRS  101  in  its  next  financial 
statements.

The financial information is presented in pound sterling and all amounts disclosed in the financial statements and notes 
have been rounded off to the nearest thousand currency units, unless otherwise stated.

1.2 Changes of accounting policies
New standards, interpretations and amendments effective from January 1, 2023.

There were a number of narrow scope amendments to existing standards which were effective from January 1, 2023. 
None of these had a material impact on the Company.

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: NOTES TO THE COMPANY FINANCIAL STATEMENTS

1.3 Summary of material accounting policies
The  Company’s  accounting  policies  are  consistent  with  those  described  in  the  consolidated  financial  statements  of 
Mereo BioPharma Group plc, within Note 2 of the consolidated financial statements. Below are accounting policies which 
are specific to the Company.

a) Investment in subsidiaries
Investments in subsidiary undertakings are stated at cost less any provision for impairment. Amounts capitalized as 
investments  in  subsidiary  undertaking  are  reviewed  for  impairment  at  each  year  end  in  accordance  with  IAS  36 
(Impairment of Assets).

2. Significant accounting judgments, estimates and assumptions
The preparation of the Company financial statements requires the management of the Company to make estimates and 
judgments  that  affect  the  reported  amounts  of  assets,  liabilities,  revenues  and  expenses.  The  Company  bases  its 
estimates and judgments on historical experience and on various other assumptions that it considers to be reasonable. 
Actual results may differ from these estimates under different assumptions or conditions.

Impairment of investments in subsidiaries
The Group’s investment in subsidiaries is correlated to the clinical assets which are recorded as intangible assets in the 
consolidated financial statements as the subsidiaries hold the rights to the respective clinical assets.

An  assessment  was  made  in  respect  of  indicators  of  impairment  in  the  carrying  value  of  the  Group’s  investment  in 
subsidiaries as at December 31, 2023. If such an indication exists, the recoverable amount of the asset, being the higher 
of the asset’s fair value less costs to sell and value in use, is compared to the asset’s carrying value. Any excess of the 
asset’s carrying value over its recoverable amount is expensed to the income statement. The assessment of intangible 
assets involves a number of significant judgments regarding the likelihood of successful product approval, the costs of 
reaching  approval,  the  estimated  useful  life  of  intangible  assets  following  commercialization  and  the  subsequent 
commercial profitability of the product once approved.

As described in note 13 of the consolidated financial statements, in December 2023 the Group derecognized the £9.9 
million  intangible  asset  related  to  leflutrozole.  The  derecognition  of  this  intangible  asset  served  as  an  indicator  of 
impairment. Upon review of the recoverable amount of the investment in subsidiary associated with leflutrozole, it was 
determined  that  the  carrying  amount  was  greater  that  the  recoverable  amount  and  as  such  an  impairment  loss  was 
recorded. The investment is fully written off (see Note 4). 

3. Loss for the year
The  Company’s  loss  for  the  year  was  £22.3  million  (2022:  loss  of  £38.0  million),  which  has  been  included  in  the 
Company’s profit and loss account.

The auditor’s remuneration for audit and other services is disclosed in Note 6 of the consolidated financial statements.

The average number of employees employed by the Company (including Executive Directors) in the year was 27 (2022: 
35). The average number of employees during the year by activity was 17 administrative employees (2022: 23) and 10 
research and development employees (2022: 12). Total compensation costs for persons employed by the Company 
(including Executive Directors) during the year was £6.5 million (2022: £6.3 million), comprised of salaries of £2.8 million 
(2022: £3.3 million), social security costs of £0.5 million (2022: £0.5 million), pension contributions of £0.1 million (2022: 
£0.1 million) and share-based payments expenses of £3.1 million (2022: £2.4 million). Further information about share-
based  payment  transactions  is  provided  in  Note  25  of  the  consolidated  financial  statements.  In  respect  of  directors’ 
remuneration, amounts are included in the detailed disclosures in the audited section of the Directors’ Remuneration 
Report on page 28, which are ascribed as forming part of these financial statements.

88

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: NOTES TO THE COMPANY FINANCIAL STATEMENTS

4. Investments

4.1 Investments in subsidiaries

Cost
At January 1, 2022
Additions in the year
At December 31, 2022
Additions in the year
At December 31, 2023
Provision for impairment at January 1, 2022
Charge during the year
At December 31, 2022
Charge during the year
Provision for impairment at December 31, 2023
At December 31, 2023
At December 31, 2022

£'000s
212,545
8,406
220,951
6,772
227,723
20,835
27,747
48,582
14,285
62,867
164,856
172,369

–––––––––
The Company grants rights to its own equity instruments to Group employees who are not employees of the Company. 
For  these  grants,  the  Company  recognizes  in  equity  the  equity-settled  share-based  payment  with  a  corresponding 
increase in the investment in the subsidiary in the separate financial statements.

In the year-ended December 31, 2023, an impairment loss of £14.3 million  was  recorded to fully impair the investment 
in  Mereo  BioPharma  2  Limited    (2022:  £27.7  million).  The  impairment  loss  was  due  to  the  recoverable  value  of 
investments in subsidiaries falling below the carrying amount (held at cost, in accordance with the Company’s accounting 
policies). The recoverable value of the investments were measured based on the value in use, and the discount rate 
used in the calculation of value in use was 15% (2022: 15%). 

4.2 Information about subsidiaries

The following were subsidiary undertakings at the end of the year and have been included in the consolidated

financial statements of the Group:

Name
Mereo BioPharma 1 Limited
Mereo BioPharma 2 Limited
Mereo BioPharma 3 Limited
Mereo BioPharma 4 Limited
Mereo BioPharma Ireland Limited
Mereo BioPharma 5, Inc
Navi Subsidiary, Inc.
Mereo US Holdings Inc.

Employee Benefit Trust

*Indirect holdings

Principal activities
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Pharmaceutical R&D
Holding Company
Employee share 
scheme

% equity 

interest           

Country of 
incorporation
U.K.
U.K.
U.K.
U.K.
Ireland
U.S.
U.S.
U.S.

December 31, 
2022
100
100
100
100
100
100*
100*
100

% equity 
interest  
December 31, 
2021
100
100
100
100
100
100*
100*
100

Jersey

—

—

The  registered  office  of  Mereo  BioPharma  1  Limited,  Mereo  BioPharma  2  Limited,  Mereo  BioPharma  3  Limited  and  
Mereo BioPharma 4 Limited  is located at Fourth  Floor, 1 Cavendish Place, London  W1G 0QF. The registered office  
of Mereo BioPharma Ireland  Limited  is 6 Lapp's Quay, Cork, T12 TA48, Republic of Ireland.

Mereo  US  Holdings  Inc.  was  incorporated  on  December  3,  2018  for  the  sole  purpose  of  effecting  the  business 
combination with Mereo BioPharma 5, Inc. (formerly OncoMed Pharmaceuticals, Inc.) on April 23, 2019. The registered 

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: NOTES TO THE COMPANY FINANCIAL STATEMENTS

office  of Mereo US Holdings Inc., Mereo BioPharma 5, Inc. and its wholly owned subsidiary, Navi Subsidiary, Inc., is 
251 Little Falls Drive, City of Wilmington, County of New Castle, Delaware 19808, US.

A capital contribution of £6.8 million (2022: £8.4 million)  by Mereo BioPharma Group plc to its subsidiaries was recorded 
in  the  year  ended  December 31,  2023  for  the  granting  of  employees’  share  options  for  services  rendered  by  the 
employees to the subsidiaries and the conversion of intercompany balances at original cost.

As at December 31, 2023, total capital contributions of £179.4 million (2022: £172.6 million) by Mereo BioPharma Group 
plc to its subsidiaries has  been recorded.

Intercompany payable

5.
As at December 31, 2023, amounts owed by the Company to Group undertakings is £10.7 million (2022: £16.4 million). 
These amounts are repayable on demand and bear an interest rate between 0% and 5.30%.

6.

Property, plant and equipment

As at December 31, 2023, the net book value of right-of-use assets is £1.0 million which relates to a building.

Cost
At January 1, 2023
Additions
Disposals
Currency translation effects

At December 31, 2023

Accumulated Depreciation
At January 1, 2023
Disposals
Depreciation for the year

At December 31, 2023

Net book value
At December 31, 2022

At December 31, 2023

Right-of-
use asset
(building)
£'000s

2,464
—
—
—

2,464

(1,088)
—
(399)

(1,487)

1,376

977

Leasehold

IT
improvements equipment equipment
£'000s

£'000s

£'000s

Office

557
—
—
—

557

(219)
—
(96)

(315)

338

242

148
—
—
—

148

(59)
—
(22)

(81)

89

67

Total
£'000s

3,306
—
—
—

3,306

137
—
—
—

137

(117)
—
(12)

(1,483)
—
(529)

(129)

(2,012)

20

8

1,823

1,294

The Group’s lease liability resides in the Company. Details  on the lease liability of the Company,  including maturity 
analysis, are provided in Note 12 of the consolidated financial statements.

7. Convertible loan notes
The Group’s interest-bearing loans and borrowings all reside in the Company. Details on the convertible loan notes of 
the Company are provided in Note 20 of the consolidated financial statements.

90

MEREO BIOPHARMA GROUP PLC
FINANCIAL STATEMENTS: NOTES TO THE COMPANY FINANCIAL STATEMENTS

8. Provisions

At beginning of year
Arising during the year
Released
At ending of the year
Current
Non-current

Year ended
December 31,

2023
£’000s

2022
£’000s

9
173
—
182
182
—

—
9
—
9
9
—

The provision for social security contributions on share options is calculated based on the number of options outstanding 
at the reporting date that are expected to be exercised. The provision is based on the estimated gain arising on exercise 
of the share options, using the best estimate of the market price at the balance sheet date.

9. Warrant liability
The Group’s warrant liability resides in the Company. Details on the warrant liability of the Company are provided in 
Note 19 of the consolidated financial statements.

10. Share capital, share premium and other reserves
The Group’s share capital all resides in the Company. Details on the share capital of the Company are provided in Note 
21 of the consolidated financial statements.

11. Share-based payments
The charge for share-based payments arises across the following schemes:

2019 Equity Incentive Plan
2019 NED Equity Incentive Plan

Year ended December 31,

2023
£'000s

2022
£'000s

1,779
881
2,660

1,681
713
2,394

Details on the share-based payments of the Company, including deferred equity consideration, are provided in Note 25 
of the consolidated financial statements.

12. Related party disclosures
Details on related parties are provided in Note 26 of the consolidated financial statements.

 
92