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ProQR Therapeutics N.V.

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FY2023 Annual Report · ProQR Therapeutics N.V.
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PROQR THERAPEUTICS ANNUAL REPORT 2023 

PAGE 1 / 101 

Table of Contents 

Table of Contents 

Table of Contents _____________________________________________________ 1 

Message to Shareholders _____________________________________________ 2 

Key Figures ____________________________________________________________ 4 

Management Board ___________________________________________________ 5 

Supervisory Board  ____________________________________________________ 6 

Management Board Report ___________________________________________ 9 

Supervisory Board Report ___________________________________________  21 

Corporate Governance ______________________________________________  25 

Risk Management ___________________________________________________  37 

Financial Statements 2023 __________________________________________  39 

 
 
 
 
PAGE 2 / 101 

Message to Shareholders 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Message to Shareholders 

Over the past year, ProQR made important progress advancing our Axiomer™ RNA editing 

technology platform and announced our first pipeline programs.  

Our proprietary platform enables selective base editing in RNA, offering potential 

treatments for previously untreatable diseases. ProQR invented the use of endogenous 

ADAR in RNA editing with editing oligonucleotides (“EONs") in 2014 and has since advanced 

the science and established a leading intellectual property estate. As we move forward, 

given the broad potential applicability of this technology, we plan to not only further build 

our own wholly owned pipeline, but to also selectively enter strategic partnerships. This 

dual pillar strategic approach will enable our technology to be leveraged to its fullest 

potential for the development of medicines targeting diseases outside of our primary focus.  

In line with this strategy, in December 2023, we completed the divestment of late-stage 

ophthalmic assets, sepofarsen and ultevursen, to Laboratoires Théa (“Théa”). Importantly, 

Théa will continue the development of these potentially transformational therapies for 

patients, as ProQR continues to focus exclusively on advancing our Axiomer RNA editing 

platform.  

In March 2023, we hosted a virtual R&D event announcing our initial pipeline programs 

focused on diseases that originate in the liver. During the event, we unveiled AX-0810 for 

Cholestatic diseases and AX-1412 for Cardiovascular disease, targeting NTCP and B4GALT1 

respectively. These initial pipeline programs share several key characteristics including a 

deep rooting in human genetics, the potential to have a major impact in indications with 

high unmet medical need, the ability to leverage the existing proven delivery technology to 

the liver, the opportunity to monitor early biomarkers to establish target engagement in 

Phase I trials for human proof of concept, and the availability of well-defined clinical 

endpoints.  

Following our expanded partnership with Eli Lilly (“Lilly”) that we announced in late 2022, we 

continue to execute and build on the successes achieved during the first two years of the 

collaboration. The continued success of our collaboration with Lilly is a testament to the 

strength of Axiomer and our leadership in ADAR-mediated RNA editing.  

We will continue to opportunistically enter into additional strategic partnerships with other 

parties, as we announced in January 2024 with the Rett Syndrome Research Trust (“RSRT”), a 

leading patient advocacy group championing a cure for Rett syndrome. Our collaboration 

with the RSRT focuses on the design and development of editing oligonucleotides (“EONs”) 

using ProQR’s Axiomer technology platform targeting the transcription factor MECP2 and 

correcting mutations of interest. This partnership expands the broad applicability of our 

 
 
PAGE 3 / 101 

Message to Shareholders 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Axiomer RNA editing technology to Rett syndrome, a rare neurodevelopment disorder with 

significant unmet medical need. 

Throughout the last year, ProQR further strengthened our leading global IP estate for 

ADAR-mediated RNA editing including as announced in November 2023 a new patent from 

the United States Patent and Trademark Office, which expanded our broad protection of 

RNA editing using oligonucleotides to recruit endogenous ADAR. ProQR’s leading 

intellectual property portfolio protects our Axiomer ADAR-mediated RNA editing platform 

technology and more fundamentally the use of an oligonucleotide to recruit endogenous 

deaminating enzymes in the cell. Separately, we also had multiple successful defenses 

against oppositions, including in Europe and Japan. ProQR has extensive patent protection 

related to its RNA editing platform, Axiomer, including more than 13 published patent 

families, which currently comprise a total of 27 patents. We also have several unpublished 

patent applications and continuously invest in expanding our IP estate around ADAR-

mediated RNA editing. 

As we progress in 2024, we’re well positioned to continue to execute on our strategic 

priorities with a strong cash position, which provides us with a runway to mid-2026. In 

January, we presented new in vivo data for our proprietary Axiomer RNA editing technology 

platform at the Deaminet 2024 meeting, demonstrating robust editing of ACTB in the liver 

of non-human primates, as well as functional protein data with the liver target ANGPTL3 in 

mice. We look forward to presenting additional platform data, as well as the first preclinical 

data for our pipeline programs including in vitro and in vivo data for AX-0810 for Cholestatic 

diseases targeting NTCP and AX-1412 for Cardiovascular disease targeting B4GALT1. As 

part of our dual-pronged strategy, ProQR will also continue to execute on our partnership 

with Lilly, potentially generating revenue from key milestones as early as 2024 and examine 

opportunities for expansions, as well as the potential for new partnerships.  

In closing, I want to offer a special thanks to our employees, our scientific collaborators, and 

our shareholders for their support. We remain unwavering in our belief in the promise of 

RNA therapies and will continue to work to make a meaningful impact in the lives of 

patients. 

Daniel A. de Boer 

Founder and CEO, ProQR Therapeutics 

 
 
 
 
 
 
PAGE 4 / 101 

Key Figures 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Key Figures 

Result from continued operations (in € 1,000) 

Net revenue 

Other income 

Research and development costs 

General and administrative costs 

Operating result 

Net result 

Balance sheet information (in € 1,000) 

Non-current assets 

Current assets 

Total assets 

Total equity 

Non-current liabilities 

Current liabilities 

Cash flows (in € 1,000) 

Net cash generated by / (used in) operating activities 

Net cash generated by / (used in) investing activities 

Net cash used in financing activities 

Ratio’s  

Current ratio 

Solvency (%) 

Figures per share 

Weighted average number of shares outstanding 

Basic and diluted earnings per share (in €) 

Cash flow per share (in €) 

Employees 

Average number of staff for the period 

2023 

2022 

6,514 

3,011 

(25,148) 

(16,236) 

(31,859) 

(27,735) 

16,897 

120,986 

137,883 

41,390 

62,290 

34,203 

21,548 

4,278 

(2,275) 

3.5 

30.0% 

3,594 

765 

(50,867) 

(18,651) 

(65,159) 

(64,204) 

16,861 

154,460 

171,321 

66,681 

83,652 

20,988 

(68,508) 

(702) 

(30,890) 

7.4 

38.9% 

81,011,438 

71,641,305 

(0.35) 

0.29 

(0.90) 

(1.40) 

144 

163 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 5 / 101 

Management Board 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Management Board 

We have a two-tier board structure consisting of our Management Board (raad van bestuur) and a separate 

Supervisory Board (raad van commissarissen). The Management Board operates under the chairmanship of 

the Chief Executive Officer and shares responsibility for the deployment of ProQR’s strategy and policies, and 

the achievement of its objectives and results.  

Under Dutch Law, the Management Board has ultimate responsibility for the management and external 

reporting of the Company and is answerable to shareholders at the General Meeting of Shareholders. 

Pursuant to the two-tier corporate structure, the Management Board is accountable for its performance to a 

separate and independent Supervisory Board. 

The following table sets out information with respect to our Management Board members, their age, and 

their position at the Company as of the date of this annual report. 

Name 

Gender 

Date of Birth 

Position 

Date of  
Appointment 

Term 
expires 

Daniel de Boer 

René Beukema 

Male 

Male 

April 12, 1983 

March 26, 1964 

Chief Executive Officer 

February 21, 2012 

Chief Corporate Development 
Officer and General Counsel 

June 30, 2022 

2026 

2026 

The following sets forth biographical information regarding our Management Board members. 

Daniel de Boer is our Founder and Chief Executive Officer since our incorporation in 2012. Mr. de Boer is a 

serial entrepreneur and passionate advocate for rare disease patients. After one of his children was 

diagnosed with a rare disease, he started ProQR to develop RNA therapies for rare diseases. Before founding 

ProQR, Mr. de Boer was founder and Chief Executive Officer of several technology companies. He is also 

strategic advisor at Hybridize Therapeutics, Meatable, Algramo, Xinvento, Avanzanite, BioColl Labs and a 

member of the advisory board at the Termeer Foundation. In 2018 Mr. de Boer was named "Emerging 

Entrepreneur of the Year" by EY. In 2019 Mr. de Boer was selected for the Young Global Leader program at 

the World Economic Forum.  

René Beukema rejoined ProQR in 2022 having previously served as the Company's Chief Corporate 

Development Officer and General Counsel from 2013 to 2018. Mr. Beukema is a seasoned M&A and equity 

capital markets executive and an experienced corporate lawyer. From 2019 until June 2022 Mr. Beukema held 

the Position of Chief Corporate Development Officer & General Counsel at Frame Therapeutics, a neoantigen 

immune-oncology biotechnology company. He was instrumental in financing Frame Therapeutics and selling 

it to CureVac, a Nasdaq Listed biotechnology company. From 2021 to 2024 Mr. Beukema was a Board 

Member of Fibriant BV, a biotechnology company focused on the development of technology and products 

based on recombinant human fibrinogen and thrombin. Prior to his initial tenure at the Company, he served 

as General Counsel and Corporate Secretary of Crucell for twelve years, following his positions as Senior 

Legal Counsel at GE Capital / TIP Europe and Legal Counsel at TNT Express Worldwide. Mr. Beukema was also 

a venture partner of Aescap Venture, a life sciences venture capital firm from 2011 to 2012 and is co-founder 

of myTomorrows, a Dutch life sciences company. He holds a post-doctoral degree in corporate law from the 

University of Nijmegen in co-operation with the Dutch Association of In-house Counsel (Nederlands 

Genootschap van Bedrijfsjuristen) and a master's degree in Dutch law from the University of Amsterdam. 

 
 
 
 
 
 
 
 
 
 
 
PAGE 6 / 101 

Supervisory Board 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Supervisory Board 

The Supervisory Board oversees the policies of the Management Board and the general course of affairs of 

ProQR and advises the Management Board thereon. The Supervisory Board, in the two-tier corporate 

structure under Dutch law, is a separate and independent corporate body. 

The following table sets forth information with respect to each of our Supervisory Board members and their 

respective dates of birth. The terms of office of all our Supervisory Board members expire according to a 

rotation schedule drawn up by our Supervisory Board. All of our Supervisory Board members are 

independent under applicable NASDAQ standards and under the Dutch Corporate Governance Code 

(“DCGC”) with the exception of Theresa Heggie, who was prior to her appointment on the Supervisory Board 

in 2023 employed by ProQR as Chief Commercial Officer and Chief Operations Officer. 

Name 

Gender  Nationality 

Date of Birth 

Position 

Date of Appointment  Term expires 

Dinko Valerio 

  Male 

Alison F. Lawton 

Female 

NL 

US 

August 3, 1956  Chairman 

January 1, 2014 

September 26, 1961  Member 

September 17, 2014 

Theresa Heggie 

Female 

GB / US 

November 17, 1960  Member 

James Shannon 

Bart Filius 

Male 

Male 

Begoña Carreño 

Female 

GB 

NL 

ES 

June 5, 1956  Member 

July 5, 1970  Member 

December 13, 1971  Member 

May 18, 2023 

June 21, 2016 

May 21, 2019 

May 18, 2023 

2024 

2026 

2027 

2024 

2027 

2027 

The following sets forth biographical information regarding our Supervisory Board members.  

Dinko Valerio is one of our founders and currently serves as the chairman of our supervisory board which he 

joined in 2014. As a scientist and an experienced biotech entrepreneur Mr. Valerio is founder and former CEO 

of Crucell N.V., and one of the founders of its spinout, Galapagos Genomics. He was founder and former 

general partner of Aescap Venture, a life sciences venture capital firm and co-founder and current board 

member of Leyden Laboratories. In 1992 Mr. Valerio was appointed professor of gene therapy at the 

University of Leiden, where he also received his Ph.D. with honors. 

Alison F. Lawton has served on our supervisory board since 2014. Ms. Lawton is an executive leader with more 

than 35 years of experience in biopharma. Most recently, she served as President and CEO of Kaleido 

Biosciences, Inc. Ms. Lawton previously served as Chief Operating Officer of Aura Biosciences, OvaScience 

and X4 Pharmaceuticals. She worked at various positions of increasing responsibility at Genzyme, and 

subsequently at Sanofi-Aventis, including as head of Genzyme Biosurgery and Global Market Access. Ms. 

Lawton currently serves on the board of directors of public pharmaceutical companies X4 Pharmaceuticals, 

and Dianthus Therapeutics, and the private companies AgBiome, SwanBio and BlueRock Therapeutics. She 

previously served on the boards of Verastem, CoLucid until its acquisition by Eli Lilly and Cubist 

Pharmaceuticals until its acquisition by Merck & Co. She is past President and Chair of the Board of 

Regulatory Affairs Professional Society and past FDA Advisory Committee member for Cell and Gene Therapy 

Committee. She earned her BSc in Pharmacology, with honors, from King’s College London. 

Theresa Heggie was reappointed to ProQR’s Supervisory Board in 2023. Previously, Ms. Heggie served as the 

Chief Operating Officer at ProQR, after originally joining the Management Team in 2021 as the Chief 

Commercial Officer. Prior to ProQR, she served as Chief Executive Officer of Freeline Therapeutics. She had 

senior commercial and operating roles at Alnylam Pharmaceuticals as Senior Vice President, Head of CEMEA 

and Shire where she built the EMEA rare disease business. Earlier in her career, Ms. Heggie held increasingly 

 
 
 
 
 
 
 
 
 
 
 
 
PROQR THERAPEUTICS ANNUAL REPORT 2023 

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Supervisory Board 

senior positions in the commercial organizations at Janssen Pharmaceuticals and Baxter Healthcare. She 

currently serves on the Board of BioCryst and previously served on the ProQR Supervisory Board from 2019-

2021. She earned her BSc from Cornell University. 

James Shannon has served on our supervisory board since June 2016 and has been Chair of our Scientific 

Advisory Board since 2020. Mr. Shannon has had an extensive career in drug development and pharma. From 

2012 until his retirement in 2015, he was Chief Medical Officer at GlaxoSmithKline. Prior to that he was Global 

Head of Pharma Development at Novartis and Senior Vice-President, Clinical Development at Sterling 

Winthrop Pharmaceuticals. He has previously held board positions at companies including Biotie, Circassia, 

Crucell, Endocyte and Cerimon Pharmaceuticals. Mr. Shannon currently is Chairman of the Board at 

Mannkind Corp and Kyowa Kirin NA and holds board positions at Horizon Pharma, myTomorrows and 

Leyden Labs. He received his undergraduate and postgraduate degrees at Queen’s University of Belfast and 

is a member of the Royal College of Physicians. 

Bart Filius has served on our supervisory board since 2019. He is the former President and Chief Operating 

Officer of Galapagos, a position he held from 2021 to June 2023. He joined Galapagos in 2014 as Chief 

Financial Officer and added the role of Chief Operating Officer in 2017. Prior to joining Galapagos, Mr. Filius 

held a variety of executive positions at Sanofi, where he was Vice President, Chief Financial Officer Europe, 

Country manager for The Netherlands and Vice President for Mergers & Acquisitions. Prior to joining Sanofi, 

Mr. Filius was a strategy consultant at Arthur D. Little. Mr. Filius has an MBA degree from INSEAD and a 

bachelor’s degree in business from Nyenrode University. 

Begoña Carreño, PhD joined the ProQR Supervisory Board in 2023. Dr. Carreño is currently the Chief Business 

Development Officer at Vectura Fertin Pharma in Switzerland. Prior to this, she spent 18 years at Novartis 

Pharma AG in the Corporate BD&L group, her last role being World Wide BD&L Head in the Ophthalmology 

Franchise, based in Basel, Switzerland. Dr. Carreño has over 20 years Pharmaceutical Development 

experience. She is a seasoned & energetic BD&L professional that has led the BD&L efforts at Novartis across 

5 different therapeutic franchises in the last 15 years. She has proven track record in licensing deals, M&A as 

well as developing collaborations within cross functional, multi-cultural, matrix environment at global, 

regional and country level. Before joining Novartis, she was the Head of External Pharmaceutical projects at 

Almirall (Barcelona, Spain). Dr. Carreño holds a PhD in Drug Delivery from the London School of Pharmacy 

(UK) and a BSc in Biochemistry from Keele University (UK).  

Additionally, John Maraganore, PhD joined as a strategic advisor to our Supervisory Board in March 2022. He 

served as the founding CEO and a Director of Alnylam from 2002 to 2021, where he built the company from 

early platform research on RNA interference through global approval and commercialization of the first four 

RNAi therapeutic medicines, ONPATTRO®, GIVLAARI®, OXLUMO®, and Leqvio®. At Alnylam, he also led the 

company’s value creation strategy, building $25B in market capitalization, and forming over 20 major 

pharmaceutical alliances. He continues to serve on the Alnylam Scientific Advisory Board. Prior to Alnylam, he 

served as an officer and a member of the management team for Millennium Pharmaceuticals, Inc., where he 

was responsible for the company’s product franchises in oncology, and cardiovascular, inflammatory, and 

metabolic diseases, in addition to leadership of M&A, strategy, and biotherapeutics functions. Before 

Millennium, he served as Director of Molecular Biology and Director of Market and Business Development at 

Biogen, Inc. where he invented and led the discovery and development of ANGIOMAX® (bivalirudin) for 

injection. Previously, he was a scientist at ZymoGenetics, Inc. and the Upjohn Company. Mr. Maraganore 

received his M.S. and Ph.D. in biochemistry and molecular biology at the University of Chicago. He is currently 

a Venture Partner at ARCH Venture Partners, a Venture Advisor at Atlas Ventures, and an Executive Partner at 

RTW Investments. He is also Chair of the Board of Directors of Hemab Therapeutics and a member of the 

Board of Directors of Agios Pharmaceuticals, Beam Therapeutics, Kymera Therapeutics, and the 

Biotechnology Industry Organization, where he was Chair from 2017-2019. In addition, he serves on the 

 
 
 
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Supervisory Board 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Board of the Termeer Foundation, as Chair of the n-Lorem Foundation Advisory Council, on the Advisory 

Board of Ariadne Labs, and as a strategic advisor to several innovative companies. 

 
 
PAGE 9 / 101 

Management Board Report 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Management Board Report 

The Company 

ProQR Therapeutics N.V., or “ProQR” or the “Company”, is a biotechnology company dedicated to changing 

lives by developing RNA therapies for severe rare and common diseases. We focus on advancing our 

proprietary Axiomer RNA-editing platform technology. 

ProQR was founded in 2012 by Daniel de Boer, Gerard Platenburg, the late Henri Termeer and Dinko Valerio. 

Since September 18, 2014, our ordinary shares have been listed on Nasdaq. They are currently trading on 

Nasdaq Capital Market under the ticker symbol “PRQR”. As of December 31, 2023, we had raised € 435 million 

in gross proceeds from our public offerings of shares and private placements of equity securities. In addition, 

we have received grants, loans and other funding from patient organizations and government institutions 

supporting our programs, including from Foundation Fighting Blindness and the Dutch government under 

the innovation credit program. 

Our legal name is ProQR Therapeutics N.V. and we were incorporated in the Netherlands, on February 21, 

2012. We reorganized from a private company with limited liability to a public company with limited liability 

on September 23, 2014. Our company has its statutory seat in Leiden, the Netherlands. The address of its 

headquarters and registered office is Zernikedreef 9, 2333 CK Leiden, the Netherlands, telephone number 

+31 88 166 7000. Our US office is located at 245 Main Street, Cambridge, MA 02142, USA. The name and 

address of our agent for service in the United States is Andrew Morris, 245 Main Street, Cambridge, MA 

02142, USA.  

We use various trademarks and tradenames, including without limitation “ProQR”, “Axiomer”, “Trident” and 

our corporate logo, that we use in connection with the operation of our business. Other trademarks or trade 

names of third parties referred to or incorporated by reference in this Annual Report are the property of their 

respective owners. Solely for convenience, the trademarks and trade names in this Annual Report may be 

referred to without the ®, ™ or SM symbols, but such references should not be construed as any indicator 

that their respective owners will not assert, to the fullest extent permissible under applicable law, their rights 

thereto. We do not intend to use or display other companies’ trademarks and trade names to imply a 

relationship with, or endorsement or sponsorship of us, any other companies. 

Operations 

We are a biotechnology company dedicated to the creation of transformative RNA therapies to improve the 

lives of patients and families affected by diseases with high unmet medical need. To achieve this, we are 

advancing our proprietary Axiomer RNA-editing platform technology. Our product candidates are designed to 

engage Adenosine Deaminase Acting on RNA (“ADAR”) to conduct targeted RNA editing which we believe have 

the potential to become a new class of innovative medicines with applicability to a broad range of therapeutic 

areas. Using our deep RNA expertise and our strong intellectual property position, we are advancing a 

platform to develop these RNA editing therapeutics, which we call “Editing Oligonucleotides”, or EONs, for a 

variety of human diseases. 

Axiomer uses EONs to mediate single nucleotide changes to RNA in a highly specific and targeted way using 

molecular machinery that is present in human cells called ADAR. Axiomer EONs are designed to recruit and 

direct endogenously expressed ADARs to change an Adenosine (A) to an Inosine (I) in the RNA – an Inosine is 

translated as a Guanosine (G). This approach can be used to correct an RNA with a disease-causing mutation 

back to a normal (wild type) RNA, modulate protein expression, or alter a protein so that it will have a new 

function that helps prevent or treat disease. 

 
 
 
PAGE 10 / 101 

Management Board Report 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Since discovering the Axiomer RNA editing technology in 2014, we have established a leading intellectual 

property estate in the ADAR editing space, defined the design ground rules, and optimized chemistries for 

therapeutic use.  

Our research and development strategy focuses on the use of our Axiomer platform to develop novel RNA 

editing therapeutics to address diseases with high unmet medical need. We are initially focused on diseases 

originating in the liver and in the central nervous system (“CNS”) where research into human genetics has 

shown us that changing the RNA or correcting pathogenic mutations via A-to-I editing may lead to a benefit 

for patients. We prioritize areas with well-established biomarkers for the assessment of early clinical activity 

and to establish proof of target engagement, established clinically relevant endpoints, and the ability to 

leverage existing proven delivery technology. We are advancing AX-0810 for cholestatic diseases targeting Na-

taurocholate cotransporting polypeptide, or NTCP, and AX-1412 for cardiovascular disease (“CVDs”) targeting 

Beta-1,4-galactosyltransferase 1, or B4GALT1, as our initial pipeline programs. In 2024, we announced a new 

research partnership with the Rett Syndrome Research Trust (“RSRT”) focused on utilizing Axiomer to develop 

EONs targeting an underlying genetic variant that causes Rett syndrome, a rare neurodevelopment disorder, 

which is included on our pipeline as AX-2402. 

In addition to advancing our wholly-owned pipeline programs, we entered into a global licensing and 

research collaboration with Eli Lilly and Company in September 2021 where our Axiomer RNA editing 

platform is being used to progress new drug targets for disorders toward clinical development and 

commercialization. Initially focused on five targets, the partnership was expanded to ten targets in December 

2022, with an option for further expansion to fifteen targets. 

We believe the platform has significant potential to yield many additional therapeutic candidates. Thus, we 

continuously evaluate further opportunities for beneficial collaborations or strategic partnerships to 

efficiently advance product candidates with the goal of bringing medicines to patients. 

We have other earlier stage RNA editing platform technologies, including our Trident platform. Our Trident 

RNA pseudouridylation platform is designed to enable the suppression of nonsense mutations and 

premature stop codons (“PTC”) that cause 11% of all human genetic diseases. Since all premature stop 

codons contain uridine, pseudouridylation of that uridine converts those nonsense codons into sense 

 
 
 
PAGE 11 / 101 

Management Board Report 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

codons. The Trident technology harnesses the endogenously expressed pseudouridylation machinery with 

guide RNAs to, amongst other potential functions, inhibit nonsense messenger RNA (“mRNA”)-mediated 

decay (“NMD”) in a sequence-specific manner and promote PTC readthrough. The Trident technology has the 

potential to be applied in genetic diseases caused by PTCs. 

Both the Axiomer and Trident platforms are novel, proprietary RNA editing technologies invented at ProQR or 

with our academic collaborators. We have built a broad intellectual property estate around these 

technologies and together with the leading academic experts in the RNA field, we continue to advance these 

technologies. RNA editing for therapeutic applications. 

RNA antisense oligonucleotides (“AONs”) have been used as therapeutics for the last few decades. ProQR 

scientists have invented entirely new ways of using the proven modality of oligonucleotides to recruit a novel 

mechanism of action. 

RNAs are produced in a process called transcription, where genetic information in DNA is copied into RNA. 

The information in RNA then serves as a blueprint to produce a protein via a process called translation. 

Before translation occurs, RNA can be processed in several ways. One way is RNA editing, which involves 

changing specific nucleotides, or letters, in the RNA code. RNA editing is a naturally occurring process that 

helps ensure that produced proteins function normally. It can also create slightly differently functioning 

proteins.  

One common type of RNA editing is A-to-I editing, where Adenosines (abbreviated as “A”), are changed into 

Inosines (abbreviated as I), as shown in Figure 1. Nucleotides pair together to create double stranded 

structures within the RNA. Double stranded RNA structures are found and bound to by ADAR, which is 

naturally present in the cells. ADAR then can edit As into Is, which is read by a ribosome as a G, or guanosine. 

This process is called “A to I” editing, which functionally enables changing an A into a G. In 2014, scientists at 

ProQR invented Axiomer, which was conceived based on the idea of recruiting endogenous ADAR in humans 

to make single A to I changes in RNA in a highly specific and targeted manner, using EONs as shown in Figure 

1b. 

Figure 1a (left): RNA editing is a naturally occurring process whereby ADARs perform A to I editing.  

Figure 1b (right): ProQR’s Axiomer RNA editing technology platform uses EONs to recruit and direct 

endogenously expressed ADARs to edit an A to an I in the RNA, which is then translated as a G, 

allowing highly specific editing. 

 
 
 
 
PAGE 12 / 101 

Management Board Report 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

There are over 16 million known locations in the RNA where ADARs perform A to I editing throughout the 

body, which we believe represents a powerful potential therapeutic mechanism for multiple disease areas. 

Axiomer could potentially yield a new class of medicines for both rare and prevalent diseases with unmet 

need. 

Our Strategy 

We are advancing Axiomer as a platform to develop a new class of innovative medicines based on ADAR RNA 

editing, which we believe has the potential to treat a broad range of diseases that currently lack adequate 

treatment options. Our novel and proprietary RNA editing platform technologies, known as Axiomer and 

Trident, are new ways to use oligonucleotides to edit single nucleotides in the RNA. We believe the Axiomer 

technology may be applicable to thousands of disease-causing mutations by correcting RNA in genetic 

diseases. Beyond mutation correction, Axiomer also has the potential to address unmet medical needs in 

common conditions, by modulating protein expression or altering a protein so that it will have a new function 

to help prevent or treat diseases. We intend to continue to optimize our platform as we advance to clinical 

stage and beyond. Key elements of our strategy include: 

• 

Pipeline: We intend to use these platforms to develop novel therapies initially for targets related to liver- 

and CNS-originating diseases, and beyond. With our Axiomer RNA-editing technology platform, we are 

advancing AX-0810 for Cholestatic Diseases targeting NTCP and AX-1412 for CVDs targeting B4GALT1 as 

our initial pipeline programs. In January 2024, we announced a partnership with the RSRT in which we 

will develop EONs targeting an underlying genetic variant that causes Rett syndrome, a rare 

neurodevelopment disorder, which is included on our pipeline as AX-2402. 

• 

Partnerships: We continue to validate and create value for these platforms by selectively pursuing 

additional licensing, partnering, and other strategic relationships outside of our core focus area, such as 

our partnership with Lilly, and the RSRT. 

We seek to maximize the value of our pipeline by retaining development and commercialization rights to 

those product candidates, indications and geographies that we believe we can independently develop, seek 

approval for, and commercialize on our own. Beyond this, for other product candidates, such as those for 

more prevalent indications, and other geographies, we plan to selectively and opportunistically seek potential 

partnerships following early-stage clinical proof of concept. 

Our Novel Axiomer RNA Editing Technology Platform 

Antisense oligonucleotides, or AONs, have been used as therapeutics for decades. Our Axiomer RNA editing 

technology is based on oligonucleotides that are called editing oligonucleotides, or EONs, designed to recruit 

endogenous ADAR enzymes to make single adenosine-to-inosine (A-to-I) changes in the RNA in a highly 

specific and targeted manner. This technology could correct thousands of G-to-A mutations in the human 

population that cause diseases. In vitro and in vivo work indicates that the EONs are generally applicable for 

the correction of RNA G-to-A mutations. The technology is also designed to modulate protein expression or 

alter proteins to provide a new function to help prevent or treat disease. With this applicability, we believe 

Axiomer has the potential to address hundreds of genetic and non-genetic diseases. 

Across a range of targets, we have shown both in vitro and in vivo platform proof-of-concept for our Axiomer 

RNA editing technology platform, in cell models, organoids, and animal models, including relevant higher 

order species.   

 
 
 
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Management Board Report 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Our Axiomer platform has demonstrated proof of concept across multiple models, as shown in Figure 2a and 

2b reporting up to 70% editing of ACTB in the liver of non-human primates (“NHPs”) and mice and 50% editing 

in the nervous system. 

Figure 2a: Robust editing with Axiomer editing oligonucleotides reported in the nervous system across 

different models and targets in vivo including non-human primates. 

Figure 2b: Up to 70% editing of ACTB in the liver of non-human primates (NHPs) and mice. 

Additionally, across EONs, preliminary nonclinical safety assessment showed a similar safety profile 
compared to other single-stranded RNA oligonucleotides. 

If translated in human testing, we believe the editing activity and safety profile supports the potential of our 

technology and plan to advance product candidates based on our Axiomer platform to clinical stage. 

 
 
 
 
 
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Our Pipeline Programs 

We are advancing Axiomer as a platform to develop a new class of innovative medicines based on RNA 

editing. Our initial pipeline targets focus on liver-originating and CNS diseases share several key 

characteristics, including:  

• 

• 

• 

• 

• 

Population with unmet need 

Target with deep roots in human genetics 

Preclinical models with strong translatability into the clinic 

Validated biomarkers to assess target engagement and the ability to have early insight into safety 

Established disease-specific clinical endpoints 

Our initial pipeline programs include AX-0810 for Cholestatic Diseases targeting NTCP and AX-1412 for CVDs 

targeting B4GALT1. During 2024, we plan to present non-clinical proof-of-concept data for these programs 

and anticipate providing an update on translational data to enable submission of Clinical Trial Application 

(“CTA”). We expect to advance these programs to clinical trials in late 2024 / early 2025. 

In January 2024, we announced a partnership with the RSRT in which we will develop EONs targeting an 

underlying genetic variant that causes Rett syndrome, a rare neurodevelopment disorder, which is included 

on our pipeline as AX-2402. 

AX-0810 for Cholestatic Diseases targeting NTCP 

Cholestatic Diseases overview 

Cholestatic diseases are caused by a toxic buildup of bile acids in the liver due to bile duct dysfunction, which 

causes liver cell damage. The consequences of these disorders can be devastating and significantly impact a 

person's quality of life, including pruritus, dry skin, fatigue, pain, weight loss, and many others. Without 

treatment, the damage progresses through various stages, from fibrosis to cirrhosis, ultimately leading to 

liver failure and an increased risk of liver cancer. Liver transplants are often necessary for primary sclerosing 

cholangitis (“PSC”) and biliary atresia (“BA”), two forms of cholestatic diseases with high unmet medical needs. 

PSC is a condition that causes inflammation and is typically diagnosed in people aged 30 to 40, more 

commonly affecting men (66%). It is estimated that 80,000 people in North America and Europe have PSC, 

with a prevalence of 1 to 9 individuals per 100,000. This condition causes fibrosis and sclerosis of bile ducts, 

leading to a toxic buildup of bile acids in the liver. 

BA is a pediatric condition that affects newborns, resulting from the absence or defect of bile ducts. This 

condition causes harmful bile acids to accumulate in the liver, leading to rapid progression to cirrhosis early 

in life. It is estimated that 20,000 individuals in North America and Europe have BA, with a prevalence of 1 in 

10,000 to 15,000 births in the western world. 

Limitations of the Current Treatment Landscape 

Currently, there are no approved drugs for treating PSC and BA. For PSC, liver transplantation is the only 

treatment option with evidence to extend survival. However, PSC can return in 20 to 40% of patients who 

undergo liver transplantation, and the median survival without a transplant is only 21 years. Surgery in the 

first weeks of life for BA is the gold standard treatment. However, most patients who receive this surgery will 

still require a liver transplant early in life.  

AX-0810 for Cholestatic Diseases targeting NTCP 

The liver cells mainly obtain bile acids from the enterohepatic reuptake cycle. The process is primarily carried 

out by a transporter called Na-taurocholate transporting polypeptide (“NTCP, SLC10A1”), which takes bile 

 
 
 
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acids from the portal circulation to the liver. Studies show that inhibiting NTCP can improve liver function by 

reducing the levels of toxic bile acids, improving liver damage markers (fibrosis, cholangiocyte proliferation, 

Alkaline phosphatase or ALP, alanine transaminase or ALT), and lowering inflammation biomarkers 

(“cytokines”). 

AX-0810, our Axiomer-targeted RNA editing oligonucleotide, aims to reduce the reuptake of bile acids in the 

liver by inhibiting NTCP function. Variants in NTCP that change its capacity to recycle bile acid into the liver 

naturally occur in some people without causing any symptoms associated with cholestasis. This finding 

suggests that our approach is safe and may reduce the accumulation of toxic bile acids in the liver. Moreover, 

such variants in NTCP also promote the elimination of bile acids from the body by increasing their excretion 

in the feces and urine, a process called sulfation of bile acids, which enhances their solubility and reduces 

their absorption in the intestines. Based on its mechanism of action, we believe AX-0810 may have the 

potential to modify the course of cholestatic diseases, delay or prevent complications such as cirrhosis and 

liver failure, and alleviate associated symptoms. 

AX-1412 for Cardiovascular Disease targeting B4GALT1 

Cardiovascular disease overview 

Cardiovascular diseases (“CVDs”) are a group of health conditions that affect the heart and blood vessels, 

such as atherosclerosis which can lead to severe problems like heart attacks, heart failure, and stroke. The 

World Health Organization (“WHO”) has identified unhealthy diet, physical inactivity, tobacco use, and 

excessive alcohol consumption as major behavioral risk factors for heart disease and stroke, increasing 

intermediate risk factors including but not limited to high blood pressure, cholesterol, glucose levels, and 

obesity. 

CVDs are the leading cause of disability and death globally, becoming a significant health issue worldwide. 

Approximately 18 million people die from CVDs each year, making up 32% of all global deaths, according to a 

report by the World Health Organization in 2021. In the United States, the American Heart Association 

estimates that by 2035, more than 130 million adults will have some form of CVD.  

Current Treatment Landscape and Limitations 

CVD treatment involves taking medications to lower cholesterol and blood pressure levels. The most common 

drugs are statins, ezetimibe, and PCSK9 inhibitors. These medications are primarily used to lower LDL 

cholesterol levels. Other treatments, such as ANGPTL3 inhibitors, decrease the residual risk of heart disease 

in patients with high LDL cholesterol levels. However, even with these therapies, less than 35% of Americans 

with high LDL cholesterol levels reach their target levels recommended by guidelines. CVD events still occur 

even when LDL cholesterol levels meet clinical goals. Many patients also struggle to continue taking their 

medications long-term, with less than 50% of patients taking their LDL-lowering medicines 2 years after a CVD 

event. Additionally, 5 to 10% of patients cannot tolerate high doses of statins, primarily due to muscle aches. 

AX-1412 for Cardiovascular Disease targeting B4GALT1 

AX-1412 represents a potential targeted approach to RNA editing of B4GALT1 that leads to a promising 

strategy for protecting against CVDs by simultaneously lowering levels of LDL-c and fibrinogen. Recent gene-

based analysis has shown that rare protective variants changing protein activity and predicted deleterious 

missense variants in B4GALT1 are associated with a decreased risk of coronary artery disease. Additionally, a 

particular missense variant (p.Asn352Ser) in the beta-1,4-galactosyltransferase 1 B4GALT1 gene is prevalent 

in the Amish population and associated with lower levels of LDL-c and cardiovascular disease. 

The beneficial effects of these genetic variations are due to the hypo-galactosylation of apolipoprotein B100 

and fibrinogen, which are known to be independent drivers of an increased risk of CVDs, as well as 

 
 
 
 
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immunoglobulin G and transferrin. However, it's important to note that studies have shown that B4GALT1 

knockdown can lead to semi-lethality and severe developmental abnormalities in mice models and therefore 

we believe B4GALT1 inhibition is not a feasible therapeutic approach for this purpose. 

Although there are several approaches to lowering the risks of CVDs, including reducing LDL-c and ApoB 

levels, reducing fibrinogen levels may offer additional benefits to patients with unmet medical needs in this 

large population. Fibrinogen reduction can be used either as a stand-alone therapy or an adjunct therapy to 

other treatments. 

We are developing Axiomer targeted RNA EON AX-1412 to address CVD by editing B4GALT1. RNA editing to a 

protective variant of B4GALT1 can have positive effect on CVDs risk factors by leading to hypo-galactosylation 

of apolipoprotein B100 and fibrinogen. Based on its mechanism of action, we believe that AX-1412 is a novel 

and unique approach to address CVD by lowering LDL-C and fibrinogen levels ultimately leading to a reduced 

residual risk in CVDs.  

We intend to advance AX-1412 targeting B4GALT1 to early clinical proof of concept stage, then would seek to 

partner this program. 

Our Earlier-Stage/Discovery Programs  

In January 2024, we announced a partnership with the RSRT that will focus on the design and development of 

EONs using our Axiomer technology platform targeting the transcription factor MECP2 and correcting 

mutations of interest. AX-2402 is our program focusing on Rett syndrome, which is a progressive 

neurodevelopmental disorder caused by genetic mutations in the Methyl CpG binding protein 2 (“MECP2”) 

and diagnosed primarily in females. It is characterized by apparently normal psychomotor development 

during the first six to 18 months after birth, followed by a period of developmental stagnation, then a 

regression in language and motor skills, followed by long-term relative stability. During the phase of 

regression, affected patients develop repetitive, stereotypic hand movements that replace purposeful hand 

use. Additional symptoms include gait ataxia and apraxia, seizures, tremors, episodic apnea and/or 

hyperpnea, gastrointestinal issues, scoliosis and musculoskeletal problems, anxiety and sleep issues and 

bruxism.  

In addition to AX-2402 for Rett syndrome, we have multiple other early-stage research programs ongoing that 

target additional diseases with our Axiomer EON approach, including AX-1005 for undisclosed targets in CVD, 

AX-2911 for nonalcoholic steatohepatitis (“NASH”), AX-0601 for obesity and Type 2 diabetes, AX-9115 for rare 

metabolic condition, as well as multiple other targets in our discovery pipeline. 

Our Partnership Strategy 

Our business strategy is to develop and ultimately commercialize a broad pipeline of RNA therapies based on 

our Axiomer RNA editing platform technology. We are initially focused on developing an internal pipeline 

based on liver-originating diseases, including Cholestatic Diseases and CVD, among others. We believe there 

is broad applicability of the platform beyond liver and as part of the strategy to advance Axiomer, we have 

entered into, and expect to enter into additional collaboration and licencing agreements as a means of 

obtaining funding and capabilities to advance programs based on Axiomer. 

A global licensing and research collaboration with Eli Lilly and Company focuses on the discovery, 

development, and commercialization of potential new medicines for genetic disorders using our Axiomer 

RNA editing technology with a focus on CNS and peripheral nervous system (“PNS”). The partnership, formed 

in 2021, initially focused on up to five targets. In December 2022, the partnership was expanded to up to ten 

targets, with an option for an additional five targets. Under the terms of the agreements, we received $125 

million upfront from Lilly and would be paid an additional $50 million if Lilly exercises the option for five 

 
 
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additional targets. We are also eligible to receive up to approximately $3.75 billion in milestones, as well as 

royalties on potential product sales.  

In January 2024, we announced a collaboration with the RSRT, as described above. RSRT awarded ProQR 

approximately $1 million as a research grant for the initial phase of the project, which will encompass editing 

oligonucleotide design and optimization, including evaluation in in vivo models for editing efficacy and MECP2 

protein recovery. It is the intent of the partnership to be continued by an expanded co-funding arrangement 

following the initial discovery work. The co-funding of the next phase of the collaboration would enable 

clinical development of an Axiomer-based therapeutic for Rett syndrome MECP2. 

We believe the platform holds significant further potential for strategic transactions. 

Ophthalmology Assets 

In August 2022, we made the decision to exclusively focus our strategy on the advancement of our Axiomer 

RNA editing technology and to partner our ophthalmology programs. In December 2023, we announced that 

we had completed a transaction divesting the late stage ophthalmic assets sepofarsen and ultevursen to 

Laboratoires Théa (“Théa”) who will continue the development of these therapies for patients with LCA10 and 

Usher Syndrome. Under the terms of the agreement, ProQR received an initial payment of € 8 million and 

may be eligible for up to € 165 million in further development, regulatory, and commercial earn-out 

payments upon related achieved milestones, as well as double-digit royalties based on commercial sales in 

the United States and EU. 

Competition 

The pharmaceutical industry is highly competitive and subject to rapid and significant technological change. 

Our potential competitors include large pharmaceutical, biotechnology, specialty pharmaceutical, and generic 

drug companies, academic institutions, government agencies and research institutions. Key competitive 

factors affecting the commercial success of our product candidates are likely to be efficacy, safety and 

tolerability profile, delivery, reliability, convenience of dosing, patient recruitment for clinical studies, price 

and reimbursement. Many of our existing or potential competitors have substantially greater financial, 

technical, and human resources than we do and significantly greater experience in the discovery and 

development of product candidates, obtaining U.S. Food and Drug Administration (“FDA”), European 

Medicines Agency (“EMA”) and other regulatory approvals of products and the commercialization of those 

products. Mergers and acquisitions in the pharmaceutical and biotechnology industries may result in even 

more resources being concentrated among a small number of our competitors. Accordingly, our competitors 

may be more successful than we may be in obtaining FDA or EMA approval for therapies and achieving 

widespread market acceptance. Our competitors’ products may be more effective, or more effectively 

marketed and sold, than any product we may commercialize and may render our therapies obsolete or non-

competitive before we can recover development and commercialization expenses. 

Our competitors are working on similar technologies in the field of RNA editing, but also in the field of gene 

editing and gene therapy as well as other types of therapies, such as small molecules, protein replacement or 

antibodies. 

Main financial developments 

Financial position 

In 2023, our operating costs decreased compared to last year while our current ratio and solvency also 

decreased. At December 31, 2023, ProQR’s cash and cash equivalents amounted to € 118,925,000 compared 

to € 94,775,000 at December 31, 2022. Net cash generated by operating activities amounted to € 21,548,000 

in the year ended December 31, 2023, whereas net cash used in operating activities amounted to 

 
 
 
 
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€ 68,508,000 in the year ended December 31, 2022. The Company experienced a net positive cash flow from 

operating activities in 2023 mainly because of the receipt of the Lilly up-front payment of € 56,412,000 in 

February 2023. In addition, total operating costs decreased by € 28,134,000 in 2023 compared to 2022, which 

had a further positive impact on net cash generated by operating activities.  

Total equity decreased from € 66,681,000 to € 41,390,000 in the year ended December 31, 2023. At December 

31, 2023, we had borrowings of € 4,292,000, which consisted of a loan from a government body. Based on the 

current state of affairs and existing funding, taking into account our current cash position and projected cash 

flows, it is justified that the financial statements are prepared on a going concern basis.  

Income statement 

We have generated losses since our inception in February 2012. For the years ended December 31, 2023 and 

2022, we incurred net losses of € 27,735,000 and € 64,204,000, respectively. At December 31, 2023, we had an 

accumulated deficit of € 400,850,000. We expect to continue incurring losses for the foreseeable future as we 

invest in our Axiomer and Trident platforms and continue our (pre-)clinical studies of our product candidates.  

In 2023 we realized revenue from our license and research collaboration agreement with Lilly amounting to 

€ 6,514,000 (2022: € 3,237,000). The increase in Lilly revenue is due to new projects under the Lilly 

collaboration that were started in 2023. In 2023 we realized no revenue from our license and research 

collaboration agreement with Yarrow (2022: € 357,000). The decrease in Yarrow revenue is due to the 

termination of the Yarrow collaboration in the second quarter of 2022. 

In 2023, other income consisted primarily of the net proceeds from the Company’s divestment of its late-

stage ophthalmic intellectual property assets, sepofarsen and ultevursen, to Théa. No such income was 

recognized in 2022. In 2022, other income included grant income from the Foundation Fighting Blindness 

(“FFB”) for the purpose of developing ultevursen. FFB grant income amounted to € 594,000 in 2022 while no 

such income was recognized in 2023. 

Research and development costs amounted to € 25,148,000 for the year ended December 31, 2023 

compared to € 50,867,000 for the year ended December 31, 2022. These costs were primarily related to the 

development of our Axiomer platform, including costs incurred under the Lilly collaboration in 2023 and 

2022. In 2022, the Company also incurred costs related to the sepofarsen and ultevursen clinical trials and 

the wind-down of those ophthalmology programs. Our research and development expenses are highly 

dependent on the development phases of our product candidates. Research and development expenses are 

expected to increase as we continue our joint research projects with Lilly and our investments in the Axiomer 

and Trident platforms, while progressing our internal pipeline targets towards clinical development. 

The decrease in research and development costs in the year ended December 31, 2023 compared to the year 

ended December 31, 2022 includes the effects of: 

• 

• 

• 

• 

Lower costs of contract research organizations (“CROs”) for the Phase 2/3 clinical trials for ultevursen. 

The trials were wound down in the second half of 2022 and wind-down costs were recognized in 2022. 

The Company incurred very limited further wind-down costs in 2023; 

Lower employee benefits (excluding share-based compensation) in 2023 compared to 2022, resulting 

from the effects of a reorganization in 2022, partly offset by a company-wide inflationary correction on 

salaries; 

Advisory costs relating to the Phase 2/3 clinical trials for ultevursen that we incurred in 2022 but not in 

2023; 

The above effects are partly offset by increased expenses related to the development of our Axiomer 

platform in 2023. 

 
 
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General and administrative costs amount to € 16,236,000 for the year ended December 31, 2023 and 

€ 18,651,000 for the year ended December 31, 2022. The decrease in general and administrative costs in the 

year ended December 31, 2023 compared to the year ended December 31, 2022 includes the effects of: 

• 

• 

Lower employee benefits (excluding share-based compensation) resulting from the effects of a 

reorganization in 2022, partly offset by a company-wide inflationary correction on salaries; 

The above effect is partly offset by increased share-based compensation, reflecting the higher value of 

grants of share options to general and administrative staff. 

Outlook 

We expect to continue to spend substantial amounts of cash to conduct further research and development 

and (pre-)clinical testing of our pipeline targets and to seek regulatory approvals for any current and future 

product candidates. Based on our current operating plans, we believe that our existing cash and cash 

equivalents will be sufficient to fund our anticipated level of operations into mid-2026. Given the 

development stage of the Company, we do not anticipate revenues from product sales in the foreseeable 

future. 

Risks of fraud and non-compliance with laws and regulations 

We are exposed to the risk of employee fraud or other misconduct. Misconduct by employees could include 

intentional failures to comply with FDA or EMA regulations or similar regulations of other foreign regulatory 

authorities, to provide accurate information to the FDA, the EMA or other foreign regulatory authorities, to 

comply with certain manufacturing standards, to comply with U.S. federal and state healthcare fraud and 

abuse laws and regulations and similar laws and regulations established and enforced by comparable foreign 

regulatory authorities, to report financial information or data accurately or to disclose unauthorized activities 

to us. In particular, sales, marketing and business arrangements in the healthcare industry are subject to 

extensive laws and regulations intended to prevent fraud, kickbacks, self-dealing and other abusive practices. 

These laws and regulations may restrict or prohibit a wide range of pricing, discounting, marketing and 

promotion, sales commission, customer incentive programs and other business arrangements. Employee 

misconduct could also involve the improper use of information obtained in the course of clinical trials, which 

could result in regulatory sanctions and serious harm to our reputation. We have adopted and implemented 

a Code of Business Conduct and Ethics, but it is not always possible to identify and deter employee 

misconduct, and the precautions we take to detect and prevent this activity, such as employee training on 

enforcement of the Code of Business Conduct and Ethics, may not be effective in controlling unknown or 

unmanaged risks or losses or in protecting us from governmental investigations or other actions or lawsuits 

stemming from a failure to be in compliance with such laws or regulations. If any such actions are instituted 

against us, and we are not successful in defending ourselves or asserting our rights, those actions and any 

imposition of significant fines or other sanctions could have a significant impact on our business and results 

of operations. 

We monitor and assess applicable Dutch and U.S. federal and state corporate governance codes, rules, and 

regulations. We apply the 2022 Dutch Corporate Governance Code (the “Code”). We also are required to 

comply with all applicable U.S. securities laws and regulations, including the rules and regulations 

promulgated by the U.S. Securities and Exchange Commission (“SEC”) pursuant to the U.S. Exchange Act of 

1934 and the U.S. Sarbanes-Oxley Act of 2002, as well as the U.S. Nasdaq Capital Market (“Nasdaq”) listing 

rules. 

 
 
 
 
 
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Our corporate governance structure is based on the requirements of the Dutch Civil Code, the company’s 

Articles of Association and the rules and regulations applicable to companies listed on the Nasdaq. These 

procedures include a risk management and control system, as well as a system of assurance of compliance 

with laws and regulations. 

Leiden, March 13, 2024   

On behalf of the Management Board, 

Daniel de Boer 

CEO 

 
 
 
 
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Supervisory Board Report 

ProQR Therapeutics has chosen a so-called two-tier system for its governance structure. In such a structure, 

the Supervisory Board supervises and advises the Management Board in performing their management tasks 

and setting the strategy of the Company. The Supervisory Board as well as its individual members act in the 

interests of the Company. 

During the 2023 financial year, the Supervisory Board and its sub-committees held frequent and productive 

interactions with the Management Board. Where required by ProQR’s articles of association, shareholder 

approvals or Dutch law, Management Board decision making was approved or endorsed by the Supervisory 

Board and matters of both short-term as well as long-term strategic importance were discussed in a 

constructive and transparent manner. Below is a more specific description of the Supervisory Board’s 

activities during 2023 and other relevant information on its functioning. 

Activities of the Supervisory Board 

The Supervisory Board and the Management Board held six meetings in 2023. During these meetings, the 

Boards discussed, amongst other matters, the advancement of the Company’s proprietary Axiomer RNA-

editing platform technology, including our initial pipeline targets for internal development, ProQR’s 

collaboration with Eli Lilly, the Company’s patent protection related to Axiomer, the strategic divestment of 

our late-stage ophthalmic assets to Laboratoires Théa, as well as the Company’s strategy and funding. The 

meetings were well attended with an average attendance rate of more than 98%. In addition, there were 

various informal meetings between the Supervisory Board and the Management Board during the course of 

2023. Furthermore, the committees reported back on their activities to the full Supervisory Board on a 

regular basis. 

Committees of the Supervisory Board 

During 2023, the Supervisory Board had an audit committee, a compensation, nominating and corporate 

governance committee and a research and development committee, each of which has an adopted charter.  

Compensation, Nominating and Corporate Governance Committee 

The compensation, nominating and corporate governance committee (or, the “compensation committee”) 

met five times in 2023. The meetings had an attendance rate of 100%. 

Compensation matters 

Attraction and retention of world class talent is a prerequisite for the success of ProQR and competitive 

compensation plays a vital role in our ability to achieve this. The compensation committee elected to offer 

compensation for all employees, including the Management Board, in the form of a fixed annual salary 

combined with variable, performance related, short- and long-term incentive elements. The compensation 

policy is designed based on the following principles: 

• 

Three compensation pillars consisting of: 

• 

• 

• 

Annual base salary; 

Short Term Incentive (annual cash bonus); and 

Long Term Incentive (share-based compensation plan). 

• 

Flexibility: The compensation policy should provide flexibility to allow the Supervisory Board, acting on 

the recommendation of the compensation committee, to reward the Management Board in a fair and 

equitable manner; 

 
 
 
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• 

• 

• 

• 

• 

• 

The compensation policy should drive the right kind of management behavior, discourage unjustified 

risk taking and minimize any gaming opportunity; 

The compensation policy should pay for performance, considering not only the measurable financial 

performance of / or milestones achieved by the Company, but also, where appropriate, the efforts 

made by the Management Board, individually and as a group, in managing the Company. For the 

variable components, the compensation committee performs an analysis of the possible outcomes 

under different scenarios; 

Design of the compensation policy shall be based on current legislation applicable in the Netherlands; 

The compensation policy shall foster alignment of interests with shareholders;  

The pension of the Management Board shall be based on the defined contribution system; and 

Pay differentials and position within the Company are considered and evaluated regularly.  

Compensation report 2023 

In line with the practice of regularly reviewing the Compensation Policy, the Compensation Committee 

evaluated and reviewed the Compensation Policy in 2023. Based on the outcomes of the review no changes 

were made to the Compensation Policy for the Management Board. 

The following summarizes the decisions made with respect to the Management Board’s 2023 compensation:    

Annual Base Salary 

The compensation committee reviewed the annual base salary of the Management Board taking into 

consideration the compensation reference group as contained in the compensation policy. Based on this 

review the annual base salary level for 2023 has been set at € 485,000 for the CEO, Daniel de Boer and at 

€ 380,000 for the Chief Corporate Development Officer and General Counsel, René Beukema.  

Short Term Incentive  

The compensation committee reviewed the performance of the Company during 2023 in comparison to the 

objectives and reviewed the achievements of the Management Board versus the corporate goals. Based on 

the recommendation of the compensation committee, the Supervisory Board decided in late 2023 that the 

Company has achieved 125% of the objectives that had been set to determine the bonus awards for the year 

2023. For 2023 the individual bonus amounted to € 643,000 for Mr. de Boer and € 481,000 for Mr. Beukema. 

Mr. de Boer’s and Mr. Beukema’s bonuses were paid in cash partly in the fourth quarter of 2023 and partly in 

the first quarter of 2024. 

Long Term Incentive 

Based on the recommendation of the compensation committee, the Supervisory Board decided to grant 

stock options to Mr. de Boer and Mr. Beukema. Based on this decision, in 2023 stock options with an average 

exercise price of $ 3.41 have been granted to Mr. de Boer with respect to 442,182 shares. Stock options with 

an exercise price of $ 3.41 have been granted to Mr. Beukema with respect to 132,123 shares. 

Pensions 

The pension contributions for Mr. de Boer and Mr. Beukema paid during 2023 amount to € 27,000 and 

€23,000, respectively. 

Internal pay ratio 

The internal pay ratio between the average pay of our employees and our Management Board is calculated 

based on the average remuneration based on short term and long-term incentives. The pay ratio is 16:1 for 

2023 (2022: 9:1). 

 
 
 
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Supervisory Board remuneration 

For 2023, members of our Supervisory Board received board fees of € 34,000 per year and the chairperson 

received a fee of € 63,000 per year. In addition, audit committee members received a fee of € 7,000 and the 

audit committee chairperson received a fee of € 15,000 per year; compensation committee members 

received a fee of € 5,500 and the chairperson of this committee received a fee of € 12,000 per year, and 

research and development committee members received a fee of € 5,500 and the chairperson of the 

research and development committee received a fee of € 12,000 per year. Further, Supervisory Board 

members were granted options, as set out in Note 27 to the financial statements. 

Nominating and Corporate Governance Matters 

With respect to nominating and corporate governance matters, the compensation committee assists our 

Supervisory Board in selecting individuals qualified to become our Supervisory Board members and 

Management Board members, in determining the composition of the Management Board, Supervisory Board 

and its committees and our officers in developing and recommending a set of corporate governance 

guidelines applicable to ProQR. In furtherance of this, the compensation committee is responsible for 

recommending to the Supervisory Board persons to be nominated for election or re-election to the 

Supervisory Board and the Management Board at any meeting of the shareholders; overseeing the 

Supervisory Board’s annual review of its own performance and the performance of its committees; and 

considering, preparing and recommending to the Supervisory Board a set of corporate governance 

guidelines. 

Research and Development Committee 

The research and development committee met four times in 2023. The meetings had an attendance rate of 

100%. The research and development committee assists the Supervisory Board in overseeing our product 

pipeline and research and development strategy. The research and development committee is responsible 

for, among other things, reviewing ProQR’s research and development strategy, including the long-term 

strategy goals and objectives; reviewing and assessing quality of the research and development programs; 

reviewing the progress of the product pipeline, including a review and analysis of the progress and results of 

pre-clinical studies and clinical trials; reviewing and advising the Management Board about strategic 

opportunities to enhance innovation and development; reviewing and assessing scientific activities critical to 

the success of ProQR’s research and development strategy; and organizing and chairing meetings with 

ProQR’s scientific advisory board for supporting its review and assessment ProQR’s research and 

development strategy. 

Audit Committee 

The audit committee met four times in 2023. The meetings had an attendance rate of 92%. The main topics 

that were addressed include the quarterly results, financial risk management, compliance (including SOx), the 

audit plan, audit updates and audit report of the current external auditor, cash management, tax and 

corporate governance. 

The audit committee also reviewed ProQR’s annual financial statements, including non-financial information, 

prior to publication thereof. The financial statements for 2023 have been audited and provided with an 

unqualified opinion by our external auditor, KPMG Accountants N.V. (“KPMG”), and were extensively 

discussed with the auditors in the meetings of the Supervisory Board, Audit Committee and Management 

Board on March 12, 2024. The Supervisory Board is of the opinion that the 2023 Financial Statements meet all 

the applicable requirements and recommends that the Annual General Meeting of Shareholders adopt the 

financial statements and the appropriation of net result proposed by the Management Board. 

 
 
 
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The Company’s external auditor attended all audit committee meetings. The audit committee evaluates the 

performance of KPMG as independent external auditor annually. Due to the limited size of the Company, it 

was concluded that there was currently no need to appoint an internal auditor.  

The Supervisory Board is responsible for the quality of its own performance and it discusses, once a year on 

its own, without the Management Board present, both its own functioning and that of the individual 

members, and the functioning of the Management Board. The Supervisory Board discussed its functioning 

and competencies and concluded that its functioning and competencies are appropriate for the current 

phase of the company. The Supervisory Board continues to assess its composition and functioning on an 

ongoing basis with the aim to ensure and maintain the requisite expertise, experience and diversity. The 

performance and composition of the Management Board were also found to be adequate. We feel the 

additional efforts of all staff at ProQR form a strong foundation for the success and growth of the Company 

and all milestones reached this past year. Therefore, we would like to express our thanks to the Management 

Board, senior management and all other employees for their contribution and performance during the year. 

We thank our shareholders for their continued support. 

Leiden, March 13, 2024 

On behalf of the Supervisory Board, 

Dinko Valerio 

Chairman 

 
 
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Corporate Governance 

ProQR values the importance of complying with Corporate Governance regulations. At the same time, the 

Board of Directors is of the opinion that certain deviations from the provisions of the Dutch Corporate 

Governance Code 2022 (“DCGC” or “the Code”) are justified, in view of our activities, our size and the specific 

circumstances in which we operate. In such cases, which are mentioned in this corporate governance 

statement, we apply the “comply or explain” principle.  

Deviations from certain aspects of the Code, when deemed necessary in the interests of the Company, will be 

disclosed in the Annual Report. Most deviations are justified due to our Company being listed in the United 

States with most of our investors being outside of the Netherlands, as well as to the international business 

focus of our Company. As a Company listed on NASDAQ, we comply with NASDAQ’s corporate governance 

listing standards, except for instances where we follow our home country’s corporate governance practices in 

lieu of certain NASDAQ’s standards as explained below, as NASDAQ investors are more familiar with 

NASDAQ’s rules than with the Code. 

In this report, the Company addresses its overall corporate governance structure and states to what extent 

and how it applies the principles and best practice provisions of the Code. This report also includes the 

information which the Company is required to disclose pursuant to the Dutch governmental decree on Article 

10 Takeover Directive and the governmental decree on Corporate Governance.  

Substantial changes in the Company’s corporate governance structure and in the Company’s compliance with 

the DCGC, if any, will be submitted to the General Meeting of Shareholders for discussion under a separate 

agenda item. The Supervisory Board and the Management Board, which are responsible for the corporate 

governance structure of the Company, are of the opinion that the principles and best practice provisions of 

the DCGC that are addressed to the Management Board and the Supervisory Board, are interpreted and 

implemented in line with the best practices followed by the Company, are being applied.  

The full text of the DCGC can be found at the website of the Monitoring Commission Corporate Governance 

Code (www.mccg.nl) and for an overview of our conformity with the Code the following documents are 

available at our website (www.ProQR.com): audit committee charter, compensation committee charter, 

nominating and corporate governance committee charter and our code of business conduct and ethics. 

Management Board 

ProQR is dedicated to improve the lives of patients and their loved ones through the development of RNA 

therapies for severe genetic rare diseases. The expectations and interests of our stakeholders is a key 

reference point in establishing our sustainable long term strategy. 

The Management Board’s role is to develop sustainable long term value creation by means of a strategy to 

pursue the sustainable long term success of ProQR, as further set out in the Message to Shareholders section. 

The strategy contains multiple elements linked to the Corporate Governance Code:  

 
 
 
 
 
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• 

• 

• 

• 

• 

• 

• 

• 

• 

Implementation and feasibility; 

Business model applied by the company; 

Opportunities and risks; 

Operational and financial objectives; 

Interest of shareholders; 

Impact in the field of sustainability, including the effects on people and the environment; 

Paying a fair share of tax in the countries in which ProQR operates; 

Impact of new technologies and changing business models; 

Any other relevant aspects such as charity and patient organizations. 

The Management Board executes the strategy by assuming the authority and responsibilities assigned to it by 

Dutch corporate law and by combining expertise and experience with entrepreneurial leadership. The 

Management Board operates under the supervision of the Supervisory Board. The Management Board is 

required to:  

• 

• 

• 

Keep the Supervisory Board informed in a timely manner in order to allow the Supervisory Board to 

carry out its responsibilities;  

Consult with the Supervisory Board on important matters; and  

Submit important decisions to the Supervisory Board for its approval.  

Our Management Board may perform all acts necessary or useful for achieving our corporate purposes, 

other than those acts that are prohibited by law or by our articles of association. The Management Board as a 

whole and any Management Board member individually, are authorized to represent us in dealings with third 

parties.  

Under our articles of association, the number of Management Board members is determined by the 

Supervisory Board, and the Management Board must consist of at least one member. The Supervisory Board 

elects a Chief Executive Officer (“CEO”) from among the members of the Management Board.  

Members of the Management Board are appointed by the general meeting of shareholders upon a binding 

nomination of the Supervisory Board. Our general meeting of shareholders may at all times deprive such a 

nomination of its binding character by a resolution passed by at least two-thirds of the votes cast 

representing more than 50% of our issued share capital, following which our Supervisory Board shall draw up 

a new binding nomination.  

Our Management Board rules provide that, unless the resolution appointing a Management Board member 

provides otherwise, members of our Management Board will serve for a maximum term of four years. Our 

articles of association provide that the Management Board members must retire periodically in accordance 

with a rotation schedule adopted by the Management Board. A Management Board member who retires in 

accordance with the rotation schedule may be reappointed immediately for a term of not more than four 

years at a time.  

Our Management Board currently consists of the CEO, Daniel de Boer, and the Chief Corporate Development 

Officer and General Counsel, René Beukema. The Management Board is supported by senior management 

consisting of the Chief Scientific Officer, the Chief Financial Officer, and the Chief People and Operations 

Officer. The Supervisory Board monitors the composition of the Management Board and senior management 

team on an ongoing basis to ensure the requisite expertise, experience and diversity is maintained. 

 
 
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Supervisory Board  

Our Supervisory Board is responsible for the supervision of the activities of our Management Board and our 

Company’s general affairs and business. Our Supervisory Board may, also on its own initiative, provide the 

Management Board with advice and may request any information from the Management Board that it deems 

appropriate. In performing its duties, the Supervisory Board is required to act in the interests of our Company 

(including its stakeholders) and its associated business as a whole. The members of the Supervisory Board 

are not authorized to represent us in dealings with third parties.  

Pursuant to Dutch law, members of the Supervisory Board must be natural persons. Under our articles of 

association, the number of Supervisory Board members is determined by our Supervisory Board itself, 

provided there will be at least three Supervisory Board members. Our articles of association provide that 

members of the Supervisory Board are appointed by the general meeting of shareholders upon a binding 

nomination by the Supervisory Board. Our general meeting of shareholders may at all times deprive such a 

nomination of its binding character by a resolution passed by at least two-thirds of the votes cast 

representing more than 50% of our issued share capital, following which our Supervisory Board shall draw up 

a new binding nomination.  

Our Supervisory Board rules provide that members of our Supervisory Board will serve for a maximum 

duration of three terms of four years. Our articles of association provide that the Supervisory Board 

members must retire periodically in accordance with a rotation schedule adopted by the Supervisory Board. 

A Supervisory Board member who retires in accordance with the rotation schedule can be reappointed 

immediately. The Supervisory Board appoints a chairman from among its members.  

With the exception of Theresa Heggie, each member of our Supervisory Board has been and remains fully 

independent within the meaning of Nasdaq Rule 5605(a)(2) and best practice provision 2.1.8 of the DCGC. Ms. 

Heggie was, prior to her appointment on the Supervisory Board in 2023, employed by ProQR as Chief 

Commercial Officer and Chief Operations Officer. Having been employed by the company within three years 

prior to her appointment on the Supervisory Board, Ms. Heggie does not qualify as independent within the 

meaning of Nasdaq Rule 5605(a)(2) and best practice provision 2.1.8 of the Code. We believe her membership 

of the Supervisory Board is justified by her specific knowledge of and experience with our business and 

company. Moreover, we do comply with best practice provision 2.1.7 of the DCGC, as only one out of 6 

supervisory board members is not independent under best practice provision 2.1.8 of the Code and they are 

so under different criteria of said provision 2.1.8.  

Under our articles of association, the general meeting of shareholders may suspend or remove Supervisory 

Board members at any time. A resolution of our general meeting of shareholders to suspend or remove a 

Supervisory Board member may be passed by a simple majority of the votes cast, provided that the 

resolution is based on a proposal by our Supervisory Board. In the absence of a proposal by our Supervisory 

Board, a resolution of our general meeting of shareholders to suspend or remove a Supervisory Board 

member shall require a majority of at least two-thirds of the votes cast representing more than 50% of our 

issued share capital.  

In a meeting of the Supervisory Board, each Supervisory Board member is entitled to cast one vote. A 

Supervisory Board member may grant a written proxy to another Supervisory Board member to represent 

him/her at a meeting of the Supervisory Board. All resolutions by our Supervisory Board are adopted by a 

simple majority of the votes cast unless our Supervisory Board rules provide otherwise. In case of a tie in any 

vote of the Supervisory Board, the chairman of the Supervisory Board shall have the casting vote. Our 

Supervisory Board may also adopt resolutions outside a meeting, provided that such resolutions are adopted 

in writing, all Supervisory Board members are familiar with the resolution to be passed and provided that no 

Supervisory Board member objects to such decision-making process. 

 
 
 
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A succession plan for Supervisory Board members is in place that is aimed at retaining the balance in the 

requisite expertise, experience and diversity. 

Committees of the Supervisory Board  

In 2023, the Supervisory Board had an audit committee, a compensation, nominating and corporate 

governance committee and a research and development committee. We adopted a charter for each of these 

committees.  

Audit Committee  

Our audit committee consists of Bart Filius (chairman), Alison F. Lawton and Begoña Carreño (replacing 

Antoine Papiernik per the AGM of 2023). 

Each member satisfies the independence requirements of the NASDAQ listing standards / Rule 10A-3(b)(1) 

under the Exchange Act, and each member meets the criteria for independence set forth in best practice 

2.1.8 of the DCGC. Bart Filius qualifies as an “audit committee financial expert,” as defined by the SEC in 

Item 16A: “Audit Committee Financial Expert” and as determined by our Supervisory Board. The audit 

committee oversees our accounting and financial reporting processes and the audits of our financial 

statements. The audit committee is responsible for, among other things:  

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

the operation of the internal risk management and control systems, including supervision of the 

enforcement of relevant primary and secondary legislation, and supervising the operation of codes of 

conduct; 

the provision of financial information by the Company (choice of accounting policies, application and 

assessment of the effects of new rules, information about the handling of estimated items in the 

financial statements, forecasts, work of internal and external auditors, etc.); 

compliance with recommendations and observations of internal and external auditors; 

the policy of the company on tax planning; 

relations with the external auditors, including, in particular, appointment of the external auditors, their 

independence, remuneration and any non-audit services for the Company; 

the financing of the Company; 

the applications of information and communication technology, including risks relating to cyber 

security; 

annually reviewing the need for an internal audit function: the Supervisory Board has decided not to 

create an internal audit function for the time being, since the current scope of the business does not 

justify such a full-time role. The Supervisory Board has delegated an active role to its Audit Committee in 

the design, implementation and monitoring of internal risk management and control system to manage 

the significant risks to which the Company is exposed; 

reviewing and approving all proposed related party transactions; 

discussing the annual audited statutory financial statements with the Management Board; and 

annually reviewing and reassessing the adequacy of our audit committee charter 

Compensation, Nominating and Corporate Governance Committee  

Our compensation, nominating and corporate governance committee consists of Theresa Heggie (chairman), 

Dinko Valerio and James Shannon. With the exception of Theresa Heggie, each member satisfies the 

independence requirements of the NASDAQ listing standards. In addition, with the exception of Theresa 

Heggie each member meets the criteria for independence set forth in best practice provision 2.1.8 of the 

DCGC. With respect to compensation matters, the compensation, nominating and corporate governance 

committee assists our supervisory board in reviewing and approving or recommending our compensation 

structure, including all forms of compensation relating to our supervisory board members, our Management 

Board members and our officers. Members of our Management Board may not be present at any 

 
 
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compensation, nominating and corporate governance committee meeting while their compensation is 

deliberated. With respect to nominating and corporate governance matters, the compensation, nominating 

and corporate governance committee assists our Supervisory Board in selecting individuals qualified to be 

nominated as Supervisory Board members and Management Board members, in determining the 

composition of the Management Board, Supervisory Board and its committees and our officers and in 

developing, recommending and keeping up to date the corporate governance guidelines as adopted by the 

Management Board and the Supervisory Board. Subject to and in accordance with the terms of the 

compensation policies in place from time to time and as approved by our general meeting of shareholders, 

as required by Dutch law, the compensation, nominating and corporate governance committee is responsible 

for, among other things:  

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

reviewing and making recommendations to the supervisory board with respect to compensation of our 

Management Board and Supervisory Board members; 

reviewing and approving the compensation, including equity compensation, change-of-control benefits 

and severance arrangements, of our officers (not part of our Management Board or Supervisory Board) 

as it deems appropriate; 

overseeing the evaluation of our Management Board members and our officers; 

reviewing periodically and making recommendations to our Supervisory Board with respect to any 

incentive compensation and equity plans, programs or similar arrangements; 

exercising the rights of our Supervisory Board under any equity plans, except for the right to amend any 

such plans unless otherwise expressly authorized to do so; 

attending to such other matters as are specifically delegated to our compensation committee by our 

Supervisory Board from time to time; 

approving the compensation package for the officers;  

periodically reviewing, in consultation with our CEO, our Management Board and our officers succession 

planning; 

recommending to the Supervisory Board persons to be nominated for election or re-election to the 

Supervisory Board and the Management Board at any meeting of the shareholders; 

overseeing the Supervisory Board’s annual review of its own performance and the performance of its 

committees; and 

considering, preparing and recommending to the Supervisory Board on the corporate governance 

guidelines. 

Our Supervisory Board may also delegate certain tasks and powers under our share-based compensation 

plan to the compensation, nominating and corporate governance committee.  

Research and Development Committee 

Our research & development committee consists of James Shannon (chairman), Dinko Valerio and Alison F. 

Lawton. Each member satisfies the independence requirements of the NASDAQ listing standards. In addition, 

each member meets the criteria for independence set forth in best practice provision 2.1.8 of the DCGC. The 

research & development committee assists the supervisory board in overseeing our product pipeline and 

research and development strategy. The research & development committee is responsible for, among other 

things: 

• 

• 

• 

reviewing the Company’s research and development strategy, including the long-term strategy goals 

and objectives; 

reviewing and assessing quality of the research and development programs; 

reviewing the progress of the platform development, product pipeline, including a review and analysis 

of the progress and results of pre-clinical studies and clinical trials (if and when applicable); 

 
 
 
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PROQR THERAPEUTICS ANNUAL REPORT 2023 

• 

• 

• 

reviewing and advising the management board about strategic opportunities to enhance innovation and 

development; 

reviewing and assessing scientific activities critical to the success of the Company’s research and 

development strategy; and 

organizing and chairing meetings with the Company’s scientific advisory board for supporting its review 

and assessment the company’s research and development strategy. 

Insurance and Indemnification of Management Board and Supervisory Board Members  

Under Dutch law, Management Board members, Supervisory Board members and certain other 

representatives may be held liable for damages in the event of improper or negligent performance of their 

duties. They may be held jointly and severally liable for damages to the Company for infringement of the 

articles of association or of certain provisions of the Dutch Civil Code. They may also be liable towards third 

parties for infringement of certain provisions of the Dutch Civil Code. In certain circumstances they may also 

incur additional specific civil and criminal liabilities.  

Our articles of association provide that we will indemnify our Management Board members, Supervisory 

Board members, former Management Board members and former Supervisory Board members (each an 

“Indemnified Person”) against (i) any financial losses or damages incurred by such Indemnified Person and 

(ii) any expense reasonably paid or incurred by such Indemnified Person in connection with any threatened, 

pending or completed suit, claim, action or legal proceedings, whether civil, criminal, administrative or 

investigative and whether formal or informal, in which he or she becomes involved, to the extent this relates 

to his or her position with the Company, in each case to the fullest extent permitted by applicable law. No 

indemnification shall be given to an Indemnified Person (a) if a Dutch court has established, without 

possibility for appeal, that the acts or omissions of such Indemnified Person that led to the financial losses, 

damages, suit, claim, action or legal proceedings result from either an improper performance of his duties as 

an officer of the Company or an unlawful or illegal act and (b) to the extent that his or her financial losses, 

damages and expenses are covered by an insurance and the insurer has settled these financial losses, 

damages and expenses (or has indicated that it would do so). Our Supervisory Board may stipulate additional 

terms, conditions and restrictions in relation to such indemnification.  

Composition of the boards and diversity 

Our Supervisory Board has three male members and three female members. Our Management Board and 

the senior management team are jointly comprised of five people, one female and four male members. We 

support diversity of i.a. gender, cultural background and age in our Company. ProQR maintains a culture that 

reflects that ProQR is a multicultural company representing employees from over twenty countries. The 

culture is represented by the commitment to conducting our business ethically and to observing applicable 

laws, rules and regulations. In this context the Code of Conduct and Whistleblowing policy are implemented 

and strongly anchored in the organization. Effectiveness of the Code of Conduct is monitored periodically. 

Our current Management Board and Supervisory Board members were selected based on the required 

profile and talent and abilities of the members without positive or negative bias on gender, culture or age. In 

the future, this will continue to be our basis for selection of new Board members or employees. 

General Meeting of Shareholders 

General meetings of shareholders can be held in Leiden, Amsterdam, Rotterdam, Schiphol Airport 

(municipality Haarlemmermeer), The Hague, Oegstgeest, Leidschendam, Katwijk, Noordwijk or Wassenaar, 

the Netherlands. All shareholders and others entitled to attend general meetings of shareholders are 

authorized to attend the general meeting of shareholders, to address the meeting and, in so far as they have 

such right, to vote, either in person or by proxy.  

 
 
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Annually, at least one general meeting of shareholders shall be held, within six months after the end of our 

financial year. A general meeting of shareholders shall also be held within three months after our 

Management Board has considered it to be likely that the Company’s equity has decreased to an amount 

equal to or lower than half of its paid up and called up capital. If the Management Board and Supervisory 

Board have failed to ensure that such general meetings of shareholders as referred to in the preceding 

sentences are held in a timely fashion, each shareholder and other person entitled to attend shareholders’ 

meetings may be authorized by the Dutch court to convene the general meeting of shareholders. 

Our Management Board and our Supervisory Board may convene additional extraordinary general meetings 

of shareholders whenever they so decide. Pursuant to Dutch law, one or more shareholders and/or others 

entitled to attend general meetings of shareholders, alone or jointly representing at least ten percent of our 

issued share capital may on their application, be authorized by the Dutch court to convene a general meeting 

of shareholders. The Dutch court will disallow the application if it does not appear to it that the applicants 

have previously requested that the Management Board or Supervisory Board convenes a shareholders’ 

meeting and neither the Management Board nor the Supervisory Board has taken the necessary steps so that 

the shareholders’ meeting could be held within six weeks after the request.  

General meetings of shareholders are convened by a notice which includes an agenda stating the items to be 

discussed. For the annual general meeting of shareholders the agenda will include, among other things, the 

adoption of our annual accounts, the appropriation of our profits or losses, discharge of the members of the 

Management Board for their management, discharge of the members of the Supervisory Board for their 

supervision on the management and proposals relating to the composition and filling of any vacancies of the 

Management Board or Supervisory Board. In addition, the agenda for a general meeting of shareholders 

includes such items as have been included therein by our Management Board or our Supervisory Board. 

Pursuant to Dutch law, one or more shareholders and/or others entitled to attend general meetings of 

shareholders, alone or jointly representing at least 3% of the issued share capital have the right to request 

the inclusion of additional items on the agenda of shareholders’ meetings. Such requests must be made in 

writing, substantiated, or by a proposal for a resolution and received by us no later than the sixtieth day 

before the day the relevant general meeting is held. No resolutions will be adopted on items other than those 

which have been included in the agenda.  

We will give notice of each general meeting of shareholders by publication on our website and, to the extent 

required by applicable law, in a Dutch daily newspaper with national distribution, and in any other manner 

that we may be required to follow in order to comply with Dutch law, applicable stock exchange and SEC 

requirements. We will observe the statutory minimum convening notice period for a general meeting of 

shareholders.  

Pursuant to our articles of association, our Management Board may determine a registration date 

(“registratiedatum”) of 28 calendar days prior to a general meeting of shareholders to establish which 

shareholders and others with meeting rights are entitled to attend and, if applicable, vote in the general 

meeting of shareholders. The registration date, if any, and the manner in which shareholders can register and 

exercise their rights will be set out in the convocation notice of the general meeting. Our articles of 

association provide that a shareholder must notify the Company in writing of his or her identity and his or her 

intention to attend (or be represented at) the general meeting of shareholders, such notice to be received by 

us ultimately on the seventh day prior to the general meeting. If this requirement is not complied with or if 

upon direction of the Company to that effect no proper identification is provided by any person wishing to 

enter the general meeting of shareholders, the chairman of the general meeting of shareholders may, in his 

or her sole discretion, refuse entry to the shareholder or his or her proxy holder.  

 
 
 
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Pursuant to our articles of association, our general meeting of shareholders is chaired by the chairman of our 

Supervisory Board. If the chairman of our Supervisory Board is absent and has not charged another person 

to chair the meeting in his place, the Supervisory Board members present at the meeting shall appoint one of 

them to be chairman. If no Supervisory Board members are present at the general meeting of shareholders, 

the general meeting of shareholders will be chaired by our CEO or, if our CEO is absent, another Managing 

Board member present at the meeting and, if none of them is present, the general meeting shall appoint its 

own chairman. The person who should chair the meeting may appoint another person in his stead.  

The chairman of the general meeting may decide at his discretion to admit other persons to the meeting. The 

chairman of the general meeting shall appoint another person present at the shareholders’ meeting to act as 

secretary and to minute the proceedings at the meeting. The chairman of the general meeting may instruct a 

civil law notary to draw up a notarial report of the proceedings at the Company’s expense, in which case no 

minutes need to be taken. The chairman of the general meeting is authorized to eject any person from the 

general meeting of shareholders if the chairman considers that person to disrupt the orderly proceedings. 

The general meeting of shareholders shall be conducted in the English language. 

Voting Rights and Quorum Requirements  

In accordance with Dutch law and our articles of association, each issued ordinary share and preferred share 

confers the right on the holder thereof to cast one vote at the general meeting of shareholders. The voting 

rights attached to any shares held by us or our direct or indirect subsidiaries are suspended as long as they 

are held in treasury. Dutch law does not permit cumulative voting for the election of Management Board 

members or Supervisory Board members.  

Voting rights may be exercised by shareholders or by a duly appointed proxy holder (the written proxy being 

acceptable to the chairman of the general meeting of shareholders) of a shareholder, which proxy holder 

need not be a shareholder. Our articles of association do not limit the number of shares that may be voted by 

a single shareholder.  

Under our articles of association, blank votes, abstentions and invalid votes shall not be counted as votes 

cast. Further, shares in respect of which a blank or invalid vote has been cast and shares in respect of which 

the person with meeting rights who is present or represented at the meeting has abstained from voting are 

counted when determining the part of the issued share capital that is present or represented at a general 

meeting of shareholders. The chairman of the general meeting shall determine the manner of voting and 

whether voting may take place by acclamation.  

In accordance with Dutch law and generally accepted business practices, our articles of association do not 

provide quorum requirements generally applicable to general meetings of shareholders. To this extent, our 

practice varies from the requirement of NASDAQ Listing Rule 5620(c), which requires an issuer to provide in 

its bylaws for a generally applicable quorum, and that such quorum may not be less than one-third of the 

outstanding voting shares.  

Resolutions of the general meeting of shareholders are adopted by a simple majority of votes cast without 

quorum requirement, except where Dutch law or our articles of association provide for a special majority 

and/or quorum in relation to specified resolutions.  

Anti-takeover provisions 

We have adopted several provisions that may have the effect of making a takeover of our Company more 

difficult or less attractive, including: 

 
 
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• 

granting a perpetual and repeatedly exercisable call option to a protection foundation, which confers 

upon the protection foundation the right to acquire, under certain conditions, the number of preferred 

shares in the capital of the Company. The issuance of such preferred shares will occur upon the 

• 

• 

• 

protection foundation’s exercise of the call option and will not require shareholder consent; 

the staggered four-year terms of our Supervisory Board members, as a result of which only 

approximately one-fourth of our Supervisory Board members will be subject to election in any one year; 

a provision that our Management Board members and Supervisory Board members may only be 

appointed upon a binding nomination by our Supervisory Board, which can be set aside by a two-thirds 

majority of our shareholders representing more than half of our issued share capital;  

a provision that our Management Board members and Supervisory Board members may only be 

removed by our general meeting of shareholders by a two-thirds majority of votes cast representing 

more than 50% of our issued share capital (unless the removal was proposed by the Supervisory Board); 

and  

• 

a requirement that certain matters, including an amendment of our articles of association, may only be 

brought to our shareholders for a vote upon a proposal by our Management Board that has been 

approved by our Supervisory Board.  

Deviations from the Dutch Corporate Governance Code 

The Code contains a “comply-or-explain” principle, offering the possibility to deviate from the Code as long as 

any such deviations are explained. We acknowledge the importance of good corporate governance. However, 

at this stage, we do not comply with all the provisions of the DCGC for specific reasons. The main deviations 

from best practice provisions are listed below. 

• 

• 

Best practice provision 1.1.5 stipulates that a policy for dialogue with the relevant stakeholders on the 

sustainability aspects of the strategy should be drawn up. The Company has not formulated such policy 

as it believes this is already covered by our regular process for public disclosure of information. 

Pursuant to the best practice provisions 3.1.2.vi and 3.1.2.vii of the DCGC, options granted to our 

Management Board members should not be exercisable during the first three years after the date of 

grant; shares granted to our Management Board members for no financial consideration should be 

retained by them for a period of at least five years or until they cease to hold office, whichever is the 

shorter period; and the number of options and/or shares granted to our management Board members 

should be dependent on the achievement of pre-determined performance criteria. We do not intend to 

comply with all of the above requirements as we believe it is in the best interest of the company to 

attract and retain highly skilled Management Board members on conditions based on market 

competitiveness.  

• 

Pursuant to best practice provision 3.2.3 the remuneration of the Management Board in the event of 

dismissal may not exceed one year’s salary. The management services agreements with our 

Management Board members provide for a lump-sum equal to 24 months of the individual’s monthly 

gross fixed salary in case of dismissal following a change of control. Based on the risk profile of the 

Company and to be able to attract highly skilled management, we believe this period to be appropriate. 

• 

Best practice provision 3.3.2 prohibits the granting of shares or rights to shares to members of the 

Supervisory Board as compensation. It is common practice for companies listed on the NASDAQ Capital 

Market to grant shares to the members of the Supervisory Board as compensation, in order to align the 

interests of the members of the Supervisory Board with our interests and those of our shareholders, 

and we have granted and expect to grant options to acquire ordinary shares to some of our Supervisory 

Board members.  

• 

Pursuant to best practice provision 3.3.3, any shares held by Supervisory Board members are long-term 

investments. We do not request our Supervisory Board members to comply with this provision. We 

believe it is in the best interest of the Company not to apply this provision in order to be able to attract 

and retain highly skilled Supervisory Board members on internationally competitive terms. 

 
 
 
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• 

• 

Best practice provision 4.2.2 stipulates that an outline policy on bilateral contacts with the shareholders 

shall be formulated and published on the Company’s website. The Company has not formulated such 

policy as it believes this is already covered by our regular process for public disclosure of information. 

Best practice provision 4.2.3 stipulates that meetings with analysts, presentations to analysts, 

presentations to investors and institutional investors and press conferences must be announced in 

advance on the Company’s website and by means of press releases. Provision must be made for all 

shareholders to follow these meetings and presentations in real time, for example by means of 

webcasting or telephone. After the meetings, the presentations must be posted on the Company’s 

website. We believe that enabling shareholders to follow in real time all the meetings with analysts, 

presentations to analysts and presentations to investors, would create an excessive burden on our 

resources and therefore, we do not intend to comply with all of the above requirements. 

• 

Best practice provision 4.3.3 provides that the general meeting of shareholders may pass a resolution to 

cancel the binding nature of a nomination for the appointment of a member of the Management Board 

or of the Supervisory Board or a resolution to dismiss such member by an absolute majority of the 

votes cast. It may be provided that such majority should represent a given proportion of the issued 

capital, but this proportion may not exceed one third. In addition, best practice 4.3.3 provides that if 

such proportion of the share capital is not represented at the meeting, but an absolute majority of the 

votes cast is in favor of a resolution to cancel the binding nature of the nomination, a new general 

meeting of shareholders will be convened where the resolution may be adopted by absolute majority, 

regardless of the proportion of the share capital represented at the meeting. Our articles of association 

provide that these resolutions can only be adopted with at least a 2/3 majority which must represent 

more than 50% of our issued capital, and that no such second meeting will be convened, because we 

believe that the decision to overrule a nomination by the Management Board or the Supervisory Board 

for the appointment or dismissal of a member of our Management Board or of our Supervisory Board 

must be widely supported by our shareholders.  

Summary of significant corporate governance differences from NASDAQ Listing Standards 

Our ordinary shares are listed on NASDAQ. The Sarbanes-Oxley Act of 2002, as well as related rules 

subsequently implemented by the SEC, requires foreign private issuers, including our Company, to comply 

with various corporate governance practices. As a foreign private issuer, subject to certain exceptions, the 

NASDAQ listing standards permit a foreign private issuer to follow its home country practice in lieu of the 

NASDAQ listing standards. Our corporate governance practices differ in certain aspects from those that U.S. 

companies must adopt in order to maintain a NASDAQ listing. The home country practices followed by our 

Company in lieu of NASDAQ rules are described below:  

•  We do not intend to follow NASDAQ’s quorum requirements applicable to meetings of shareholders. In 

accordance with Dutch law and generally accepted business practice, our articles of association do not 

provide quorum requirements generally applicable to general meetings of shareholders.  

•  We do not intend to follow NASDAQ’s requirements regarding the provision of proxy statements for 

general meetings of shareholders. Dutch law does not have a regulatory regime for the solicitation of 

proxies and the solicitation of proxies is not a generally accepted business practice in the Netherlands. 

We do intend to provide shareholders with an agenda and other relevant documents for the general 

meeting of shareholders and shareholders will be entitled to give proxies and voting instructions to us 

and/or third parties. 

•  We do not intend to follow NASDAQ’s requirements regarding the independence of all members of the 

compensation, nominating and corporate governance committee. Dutch law and the DCGC do not 

require that the compensation, nominating and corporate governance committee be composed entirely 

of independent directors and only requires a mere majority. In accordance with Dutch law and the 

DCGC, our compensation, nominating and corporate governance committee consists of a majority of 

members who qualify as independent under applicable NASDAQ standards and under the DCGC.  

 
 
PAGE 35 / 101 

Corporate Governance 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

•  We do not intend to follow NASDAQ’s requirements regarding NASDAQ Listing Rule 5605(b)(2), which 

mandates that independent directors must meet at regularly scheduled executive sessions where only 

independent directors are present. In accordance with Dutch law and the DCGC, our directors may 

choose to meet in executive sessions at their discretion. 

We intend to take all actions necessary for us to maintain compliance as a foreign private issuer under the 

applicable corporate governance requirements of the Sarbanes-Oxley Act of 2002, the rules adopted by the 

SEC and NASDAQ’s listing standards. 

Controls and procedures 

In accordance with the Dutch Corporate Governance Code, we have assessed the design and operational 

effectiveness of our Risk & Control framework. Based on the activities performed during 2023, and in 

accordance with provision 1.4.3, the Management Board considers that: 

• 

• 

• 

• 

this report provides sufficient insights into any failings in the effectiveness of the internal risk 

management and control systems; 

the aforementioned systems provide reasonable assurance that the financial reporting does not contain 

any material inaccuracies; 

based on the current state of affairs, it is justified that the financial reporting is prepared on a going 

concern basis; and 

the report states those material risks and uncertainties that are relevant to the expectation of the 

company’s continuity for the period of twelve months after the preparation of this report. 

In accordance with the Dutch Financial Supervision Act, section 5.25c, the Management Board declares that, 

to the best of its knowledge: 

• 

• 

the financial statements for 2023 provide, in accordance with IFRS as endorsed by the EU, a true and fair 

view of the consolidated assets, liabilities and financial position as at December 31, 2023, and of the 

2023 consolidated income statement of ProQR Therapeutics N.V.;  

the annual report provides a true and fair view of the situation as at December 31, 2023, and the state 

of affairs during the financial year 2023, together with a description of the principal risks faced by the 

Company.  

Diversity 

We value diversity as a way of recognizing and valuing the differences between individuals to come to the 

most efficient and effective way to achieve our strategic objectives. For our Supervisory Board members, this 

means that when making recommendations to the general meeting for the (re-)appointment of Supervisory 

Board members, the Supervisory Board will aim for a diverse composition in terms of such factors as gender 

and age, in accordance with our diversity policy as may be in force from time to time. Under Dutch law 

reporting rules, we will be required to address diversity of our Supervisory Board members in our Annual 

Report or in the report of the Supervisory Board (bestuursverslag): (i) composition of the Supervisory Board 

by gender; (ii) objectives of the diversity policy; (iii) description of how the diversity policy is being 

implemented and the results thereof and (iv) if there is no diversity policy, this should be explained. 

Our policy is that we will balance our board of directors in terms of gender, age, background and nationality 

as much as reasonably possible while still having our board composed of the best possible candidates 

overall. Moreover, we strongly embrace the notion that diversity as a concept is not limited to the mere 

parameters of e.g. gender and age and therefore we embrace a holistic perspective on diversity, to include 

any kind of identity characteristic of an individual, including -but not limited to- sexual orientation, sexual 

expression, gender expression and identity, disabilities, religious background, ethnicity, and disabilities. It has 

 
 
 
PAGE 36 / 101 

Corporate Governance 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

been and will remain our priority to have the best available specialists on our board of directors, irrespective 

of e.g. age, background, nationality, ethnicity and gender, who make a balanced panel of directors able to 

advise and guide ProQR to further growth and success for all its stakeholders. This means we require a 

number of specialties and character traits to be present. Taking into account the aforementioned and the 

specialist nature of our business, we will actively seek to further improve diversity on our board if and when 

proposing new appointments of directors, whilst acknowledging that diversity in all aspects are important, 

but not the only factors relevant for the ultimate decision to select a board member. We are proud to have an 

equal gender balance in our board of directors.  

 
 
 
PROQR THERAPEUTICS ANNUAL REPORT 2023 

PAGE 37 / 101 

Risk Management 

Risk Management 

Our business is subject to numerous risks and uncertainties. In the table below, we focus on the key risks and 

uncertainties the Company currently faces. For the avoidance of doubt, this does not mean that the risks 

which were previously signaled and not described here are no longer relevant. For a complete understanding 

of the risks that we face you should also read the full list of risks and uncertainties as disclosed in item 3.D 

Risk Factors of the annual report on Form 20-F. Some of these risks and uncertainties are outside the control 

of the Company, others may be influenced or mitigated. In 2015, we have implemented a Risk & Control 

framework, based on the COSO 2013 internal control framework, for enhancing our control environment as 

well as compliance with the U.S. SEC’s Sarbanes Oxley (SOx) Act of 2002, which we are required to do as a 

company listed on the NASDAQ. As part of the SOx implementation program, our Risk & Control framework 

was further enhanced in 2023, focusing on business process, IT and entity level controls. Improvement of our 

Risk & Control framework is an ongoing effort of the Company. 

We have defined our risk tolerance on a number of internal and external factors including: 

• 

• 

• 

• 

• 

• 

• 

Financial strength in the long run; 

Liquidity in the short run;  

Business performance measures;  

Scientific risks and opportunities;  

Compliance with relevant rules and regulations;  

Turnover of staff; 

Reputation.  

The identification and analysis of risks is an ongoing process that is naturally a critical component of internal 

control. On the basis of these factors and ProQR’s risk tolerance, improvement of our Risk & Control 

framework and monitoring of the risks is an ongoing effort of the Company. 

Our main risks are those that threaten the achievement of the Company’s corporate objectives, including 

compliance. If any of these risks actually occurs, our business, prospects, operating results and financial 

condition could suffer materially. These risks include, but are not limited to, the following:  

Expected impact upon 
materialization 

We may never succeed in 
developing a marketable product, 
and as a consequence we may not 
become profitable and the value 
of our ordinary shares would 
decline. 

Risk mitigating actions 

The Company reviews and 
monitors the activities of 
our research on RNA editing 
closely at each stage in the 
process. 

Risk related to 

Risk area 

Our therapeutic 
candidates are 
based on a novel 
mechanism of 
action, which 
makes it difficult 
to develop a 
marketable 
product 

Although we have discovered 
and are developing our novel 
Axiomer and Trident RNA 
editing platforms and will 
focus our resources 
exclusively on these RNA 
editing platforms as 
announced during our 
strategy update in August 
2022, there can be no 
assurance that we will be able 
to leverage our technology to 
create viable product 
candidates to advance into 
the clinic, or develop those 
candidates to submit for 
regulatory approval. 

 
 
 
 
 
 
 
PAGE 38 / 101 

Risk Management 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Risk related to 

Risk area 

Capital Needs and 
Financial Position 

The Company depends 
largely on equity financing, 
third party collaboration 
agreements and government 
subsidies.  

Dependence on 
Third Parties 

Intellectual 
Property 

The Company relies upon 
third-party contractors and 
service providers for the 
execution of several aspects 
of its preclinical and clinical 
development programs, 
which include CRO’s, third 
party manufacturers and 
other service providers. 

The Company has entered 
into a partnership with Eli Lilly 
and Company (Lilly) pursuant 
to which Lilly is to further 
develop and commercialize 
select targets compounds or 
products based on the 
Company’s platform. 

The Company is highly 
dependent on its portfolio of 
patents and other intellectual 
property, proprietary 
information and knowhow 
and its ability to protect and 
enforce these assets.  

The Company is subject to 
the risk of infringing third 
party intellectual property 
rights. 

Expected impact upon 
materialization 

Risk-mitigating actions 

Volatility of the Company’s share 
price, failure to deliver under 
collaboration agreements and/or 
the reevaluation or withdrawal of 
government subsidies may have a 
negative impact on the Company's 
ability to obtain future financing, 
and with that continue research 
and development activities. 

The ability of third-party 
financing is dependent on 
external factors and is 
therefore not entirely in the 
Company’s control. The 
Company monitors the 
market conditions for 
opportunities to add 
additional capital. 

Failure of third parties to provide 
services of a suitable quality and 
within acceptable timeframes may 
cause delay or failure of the 
Company's development 
programs. 

If Lilly decides to not further 
pursue the development and 
commercialization of the products 
subject of the collaboration for any 
reason, the Company will miss out 
on significant revenue streams. 

Inadequate intellectual property 
protection or enforcement may 
impede the Company’s ability to 
compete effectively. If the 
Company is not able to protect its 
trade secrets, know-how or other 
proprietary information, the value 
of its technology could be 
significantly diminished. 
Intellectual property rights 
conflicts may result in costly 
litigation and could result in the 
Company having to pay 
substantial damages or limit the 
Company’s ability to 
commercialize its product 
candidates. 

The Company reviews and 
monitors the activities of 
the third parties. These 
include setting contractual 
deliverables, quality 
assurance audits and 
performance reports, 
among other activities. 

Development of own 
product pipeline and 
securing partnerships with 
multiple partners. 

The Company files and 
prosecutes patent 
applications to protect its 
technologies to the best of 
its knowledge and with 
assistance from internal and 
external counsel. Prior to 
disclosing any confidential 
information to third parties, 
the Company maintains 
strict confidentiality 
standards and agreements 
for collaborating parties.  

In addition to the above key risks, the Company’s activities expose it to a variety of financial risks: market risk 

(including currency risk, interest rate risk and price risk), credit risk and liquidity risk. Unfavorable exchange 

rate developments and interest rates may impact the financial income of the Company. The Company has a 

cash management policy in place to minimize potential adverse effects resulting from unpredictability of 

financial markets on the Company’s financial performance. For additional details on the Company’s financial 

risk management, reference is made to Note 5 to the consolidated financial statements.  

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 39 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Financial Statements 2023 

Consolidated statement of financial position at December 31, 2023 

Note 

2023 

€ 1,000 

2022 (revised) 

€ 1,000 

ASSETS 

Non-current assets 

Property, plant and equipment 

Investments in financial assets 

Current assets 

Other taxes 

Prepayments and other receivables 

Cash and cash equivalents 

TOTAL ASSETS 

EQUITY 

Share capital 

Share premium 

Reserves 

Accumulated deficit 

Equity attributable to owners of the Company 

Non-controlling interests 

TOTAL EQUITY 

LIABILITIES 

Non-current liabilities 

Borrowings 

Lease liabilities 

Deferred income 

Current liabilities 

Borrowings 

Lease liabilities 

Derivative financial instruments 

Trade payables 

Social securities and other taxes 

Deferred income 

Other current liabilities 

TOTAL LIABILITIES 

TOTAL EQUITY AND LIABILITIES 

7 

9 

10 

11 

12 

13 

14 

25 

15 

14 

25 

14 

15 

16 

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

* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43. 

16,897 

— 

16,897 

 523 

 1,538 

 118,925 

 120,986 

 137,883 

 3,370 

 412,894 

 25,976 

 (400,850) 

 41,390 

 — 

 41,390 

 4,292 

 13,828 

 44,170 

 62,290 

 — 

 1,614 

 311 

 1,541 

 1,659 

 20,569 

 8,509 

 34,203 

 96,493 

 137,883 

16,240 

621 

16,861 

607 

59,078 

94,775 

154,460 

171,321 

3,370 

412,540 

30,264 

 (379,109)* 

 67,065 

 (384) 

 66,681 

4,271 

13,813 

 65,568* 

 83,652 

2,500 

1,387 

1,263 

392 

1,118 

5,641* 

8,687 

 20,988 

 104,640 

 171,321 

 
 
 
 
 
 
 
 
 
 
 
  
  
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 40 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Consolidated statement of profit or loss and comprehensive income for the 
year ended December 31, 2023 

Revenue 

Other income 

Research and development costs 

General and administrative costs 

Total operating costs 

Operating result 

Financial income 

Financial expense 

Results related to financial liabilities measured at FVTPL 

Results related to derecognition of financial liabilities 

Results related to associates 

Gain on disposal of subsidiary 

Result before corporate income taxes 

Corporate income taxes 

Result for the year 

Other comprehensive income 
(attributable to equity holders of the Company) 

Items that will never be reclassified to profit or loss 

Fair value loss on investment in financial asset designated as at 
FVTOCI 

Items that are or may be reclassified to profit or loss 

Note 

2023 

2022 (revised) 

€ 1,000 

€ 1,000 

17 

18 

19 

21 

21 

22 

14 

8 

14 

23 

6,514 

3,011 

 (25,148) 

 (16,236) 

 (41,384) 

(31,859) 

 2,593 

 (1,458) 

953 

1,866 

— 

92 

(27,813) 

78 

(27,735) 

3,594* 

765 

(50,867) 

(18,651) 

(69,518) 

(65,159) 

4,863* 

(5,127) 

2,713 

(1,390) 

(8) 

— 

(64,108) 

(96) 

(64,204) 

(621) 

— 

Foreign operations – foreign currency translation differences 

(395) 

782 

Total comprehensive loss for the year 

(28,751) 

(63,422) 

Result attributable to 

Owners of the Company 

Non-controlling interests 

 (28,119) 

 384 

 (27,735) 

(64,424) 

220 

(64,204) 

Share information 

24 

Weighted average number of shares outstanding1 

81,011,438 

71,641,305 

Earnings per share attributable to the equity holders  
of the Company (expressed in Euro per share) 

Basic earnings per share1 

Diluted earnings per share1 

The accompanying notes form an integral part of these financial statements.  
* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43. 

(0.35) 

(0.35) 

(0.90) 

(0.90) 

1 Basic and diluted earnings are equal due to the anti-dilutive nature of the options outstanding since the Company is loss-
making.  

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
PAGE 41 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Consolidated statement of changes in equity for the year ended December 31, 2023 

Attributable to owners of the Company 

Share 
Capital 

Share 
Premium 

Equity settled 
employee 
Benefit 
reserve 

Option 
premium on 
convertible 
loan 

Translation 
Reserve 

Accumulated 
Deficit 

Total 

Non- 
controlling 
Interests 

Total 
Equity 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

Balance at January 1, 2022 (revised) 

2,995 

398,309 

28,443 

1,426 

430 

(316,889)* 

114,714 

(604) 

114,110 

Result for the year 

Other comprehensive income 

Recognition of share-based payments 

Issue of ordinary shares 

Equity component of convertible loan 

Share options lapsed 

Share options exercised 

— 

— 

— 

375 

— 

— 

— 

— 

— 

— 

14,197 

— 

— 

34 

— 

— 

2,869 

— 

— 

(1,817) 

(443) 

Balance at December 31, 2022 
(revised) 

3,370 

412,540 

29,052 

Result for the year 

Other comprehensive loss 

Recognition of share-based payments 

Share options lapsed 

Share options exercised 

— 

— 

— 

— 

— 

— 

— 

— 

— 

354 

— 

— 

3,106 

 (6,280) 

 (719) 

Balance at December 31, 2023 

3,370 

412,894 

25,159 

— 

— 

— 

— 

(1,426) 

— 

— 

— 

— 

— 

— 

— 

— 

— 

The accompanying notes form an integral part of these financial statements. Specific reference is made to note 13. 

* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43.

— 

782 

— 

— 

— 

— 

— 

(64,424)* 

(64,424) 

220 

(64,204) 

— 

— 

— 

(56) 

1,817 

443 

782 

2,869 

14,572 

(1,482) 

— 

34 

— 

— 

— 

— 

— 

— 

782 

2,869 

14,572 

(1,482) 

-- 

34 

1,212 

(379,109) 

67,065 

(384) 

66,681 

 (28,119) 

 (28,119) 

384 

 (27,735) 

— 

(395) 

— 

— 

— 

 (621) 

 — 

 6,280 

 719 

 (1,016) 

 3,106 

 — 

 354 

817 

(400,850) 

41,390 

— 

— 

— 

— 

— 

 (1,016) 

 3,106 

 — 

 354 

41,390 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
PAGE 42 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Consolidated statement of cash flows for the year ended December 31, 2023 

Cash flow from operating activities 

Result for the year 

Adjustments for: 

— Other income 

— Depreciation 

— Results related to associates 

— Results on derecognition of subsidiary 

— Share-based compensation 

— Financial income and expense 

— Results related to financial liabilities measured at FVTPL 

— Results related to derecognition of financial liabilities 

— Income tax expenses 

Changes in working capital 

Cash generated by / (used in) operations 

Corporate income tax received / (paid) 

Interest received 

Interest paid 

Note 

2023 

2022 (revised) 

€ 1,000 

€ 1,000 

(27,735) 

(64,204) 

18 

7   

8 

13 

21 

22 

14 

23 

(3,011) 

2,513 

— 

(131) 

3,106 

(1,135) 

(953) 

(1,866) 

(78) 

48,956 

19,666 

78 

2,593 

(789) 

— 

2,521 

8 

— 

2,869 

264* 

(2,713) 

1,390 

96 

(4,991)* 

(64,760) 

(96) 

106 

(3,758) 

Net cash generated by / (used in) operating activities 

21,548 

(68,508) 

Cash flow from investing activities 

Purchases of property, plant and equipment 

Disposals of property, plant and equipment 

Proceeds from sale of intellectual property 

Transaction costs on sale of intellectual property 

(1,371) 

60 

7,940 

(2,351) 

(708) 

6 

— 

— 

Net cash generated by / (used in) investing activities 

4,278 

(702) 

Cash flow from financing activities 

Proceeds from issuance of shares, net of transaction costs 

Proceeds from exercise of share options 

Proceeds from borrowings 

Repayment of (convertible) loans 

Repayment of lease liability 

Net cash generated by financing activities 

Net increase/(decrease) in cash and cash equivalents 

Currency effect cash and cash equivalents 

Cash and cash equivalents at the beginning of the year 

Cash and cash equivalents at the end of the year 

13 

14 

14 

25 

12 

12 

— 

354 

— 

(1,008) 

(1,621) 

14,122 

34 

— 

(43,372) 

(1,674) 

(2,275) 

(30,890) 

23,551 

(100,100) 

599 

94,775 

118,925 

7,351 

187,524 

94,775 

The accompanying notes form an integral part of these financial statements. 
* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43. 

 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
PAGE 43 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Notes to the consolidated financial statements for the year ended December 
31, 2023 

1. General Information  

ProQR Therapeutics N.V., or “ProQR” or the “Company”, is a biotechnology company domiciled in the 

Netherlands that primarily focuses on the discovery and development of novel therapeutic medicines.  

Since September 18, 2014, the Company’s ordinary shares are listed on Nasdaq. They are currently trading at 

Nasdaq Capital Market under ticker symbol PRQR. 

The Company was incorporated in the Netherlands, on February 21, 2012 (Chamber of Commerce no. 

54600790) and was reorganized from a private company with limited liability to a public company with limited 

liability on September 23, 2014. The Company has its statutory seat in Leiden, the Netherlands and is 

registered in the Trade Register at the Chamber of Commerce under number 54600790. The address of its 

headquarters and registered office is Zernikedreef 9, 2333 CK Leiden, the Netherlands. 

At December 31, 2023, ProQR Therapeutics N.V. is the ultimate parent company of the following entities: 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

• 

ProQR Therapeutics Holding B.V. (the Netherlands, 100%); 

ProQR Therapeutics I B.V. (the Netherlands, 100%); 

ProQR Therapeutics II B.V. (the Netherlands, 100%); 

ProQR Therapeutics III B.V. (the Netherlands, 100%); 

ProQR Therapeutics IV B.V. (the Netherlands, 100%); 

ProQR Therapeutics V B.V. (the Netherlands, 100%); 

ProQR Therapeutics VI B.V. (the Netherlands, 100%); 

ProQR Therapeutics VII B.V. (the Netherlands, 100%); 

ProQR Therapeutics VIII B.V. (the Netherlands, 100%); 

ProQR Therapeutics IX B.V. (the Netherlands, 100%); 

ProQR Therapeutics I Inc. (United States, 100%); 

ProQR Therapeutics N.V. is also statutory director of Stichting Bewaarneming Aandelen ProQR (“ESOP 

Foundation”) and has full control over this entity. 

As used in these consolidated financial statements, unless the context indicates otherwise, all references to 

“ProQR”, the “Company” or the “Group” refer to ProQR Therapeutics N.V. including its subsidiaries and the 

ESOP Foundation. 

Revision of comparative figures 

In the Company’s application of IAS 21 The Effects of Changes in Foreign Exchange Rates, certain deferred 

income positions were incorrectly treated as monetary items in 2021 and 2022. To correct for the effects of 

this error, which is immaterial for all affected prior periods, the comparative figures for the year ended 

December 31, 2022 have been revised as follows:  

• 

• 

In the Consolidated statement of financial position as at December 31, 2022, equity attributable to 

owners of the Company increased by € 1,568,000 while total deferred income decreased by € 1,568,000.  

In the Consolidated statement of profit or loss and other comprehensive income (“OCI”) for the year 

ended December 31, 2022, revenue decreased by € 443,000 and financial income increased by 

€ 1,130,000. Net loss for the year ended December 31, 2022 decreased by € 687,000. 

 
 
 
 
PAGE 44 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

• 

• 

• 

• 

• 

• 

In the Consolidated statement of changes in equity, accumulated deficit at January 1, 2022 decreased by 

€ 881,000. 

In the Consolidated statement of cash flows for the year ended December 31, 2022, in addition to the 

above revisions in result for the year and net financial income and expense, changes in working capital 

decreased by € 443,000. Net cash used in operating was not affected by the revision. 

In disclosure note 5 Financial Risk Management to the Consolidated financial statements, under item (a) 

market risk, our net position of assets and liabilities denominated in U.S. dollars increased by 

€ 72,777,000 at December 31, 2022. 

In the Company balance sheet, in the comparative figures as at December 31, 2022, the accumulated 

deficit decreased by € 881,000 and the unappropriated loss decreased by € 687,000, while provisions 

decreased by € 1,568,000.  

In the Company income statement, in the comparative figures for the year ended December 31, 2022, 

the share in the loss of participating interests after taxation decreased by € 687,000. 

In disclosure note 36 Shareholder’s equity to the Company financial statements, the unappropriated loss 

as at January 1, 2022 decreased by € 881,000. 

2. Basis of preparation 

(a) Statement of compliance  
These consolidated financial statements have been prepared in accordance with IFRS accounting standards 

as endorsed by the European Union (“EU-IFRS”).  

With reference to the income statement of the Company, use has been made of the exemption pursuant to 

Section 402 of Book 2 of the Netherlands Civil Code. 

These financial statements were authorized for issue by the Company’s Management Board and its Senior 

Management on March 13, 2024.  

(b) Basis of measurement  
The financial statements have been prepared on the historical cost basis except for financial instruments and 

share-based payment obligations which have been based on fair value. Historical cost is generally based on 

the fair value of the consideration given in exchange for assets.  

(c) Functional and presentation currency 
These consolidated financial statements are presented in Euro, which is the Company’s functional currency. 

All amounts have been rounded to the nearest thousand, unless otherwise indicated. 

(d) Going Concern  
The management board of ProQR has, upon preparing and finalizing the 2023 financial statements, assessed 

the Company’s ability to fund its operations for a period of at least one year after the date of signing these 

financial statements. Management has not identified significant going concern risks. 

The financial statements of the Company have been prepared on the basis of the going concern assumption 

based on its existing funding, taking into account the Company’s current cash position and the projected cash 

flows based on the activities under execution on the basis of ProQR’s business plan and budget. 

(e) Use of critical estimates and judgements  
In preparing these consolidated financial statements, management has made judgements, estimates and 

assumptions that affect the application of accounting policies and the reported amounts of assets, liabilities, 

income and expenses. Actual results may differ from these estimates. 

 
 
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Estimates and underlying assumptions are reviewed on an ongoing basis. Revisions to accounting estimates 

are recognized in the period in which the estimate is revised if the revision affects only that period or in the 

period of the revision and future periods if the revision affects both current and future periods. 

Information about assumptions and estimation uncertainties that may have a significant risk of resulting in a 

material adjustment is included below: 

(i) Revenue recognition for the Eli Lilly research and collaboration agreement 

a. Identification of the performance obligation 

Note 17 to the financial statements describes the Company’s original research and collaboration agreement 

with Eli Lilly and Company, and the amended and restated research and collaboration agreement 

(collectively, the “Collaboration agreement”). Under the Collaboration agreement, ProQR provides Eli Lilly with 

a license (with a right to sub-license) to exploit compounds resulting from the collaboration. A significant 

amount of judgement is required to determine whether the license is distinct from the other promises in the 

contract. The license was concluded not to be distinct from the other promises in the contract based on the 

following considerations: 

• 

• 

the license has no stand-alone value to Eli Lilly without the Company being involved in the research and 

development collaboration, and; 

there are significant interdependencies between the license and the research and development services 

to be provided by the Company. 

b. Determining the timing of satisfaction of performance obligations 

Under the Collaboration agreement, the Company recognizes revenue over time, using an input method that 

estimates the satisfaction of the performance obligation as the percentage of labor hours incurred compared 

to the total estimated labor hours required to complete the promised services. As our estimate of the total 

labor hours required is dependent on the evolution of the research and development activities, it may be 

subject to change. If the progression and/or outcome of certain research and development activities would 

be different from the assumptions that were made during the preparation of these financial statements, this 

could lead to material adjustments to the total estimated labor hours, which might result in a reallocation of 

revenue between current and future periods. Our total deferred revenue balance related to this Eli Lilly 

performance obligation amounts to € 64,739,000 at December 31, 2023 (2022: € 71,209,000). 

c. Determining the transaction price 

The Company applied judgement to determine whether the equity investments made by Eli Lilly in ProQR are 

part of the transaction price for the Collaboration agreement. The Company concluded that the differences 

between the prices that Eli Lilly paid for the shares and the ProQR stock closing prices on the days of entering 

into the equity investment agreements arose because of the Company’s existing obligations to deliver 

research and development services to Eli Lilly under the terms of the Collaboration agreement. Therefore, the 

above differences between the closing share prices on the agreement effective dates and the equity 

investment prices paid by Lilly are considered to be part of the transaction price of the contract and are 

initially allocated to deferred revenue.  

The contract also includes variable consideration, but no variable consideration was included in the 

transaction price, as it is not 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. 

 
 
 
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(ii) Research and development expenditures  

Research expenditures are reflected in the income statement. Development expenses are currently also 

reflected in the income statement because the criteria for capitalization are not met. At each balance sheet 

date, the Company estimates the level of service performed by the vendors and the associated costs incurred 

for the services performed. 

Although we do not expect the estimates to be materially different from amounts actually incurred, the 

understanding of the status and timing of services performed relative to the actual status and timing of 

services performed may vary and could result in reporting amounts that are too high or too low in any 

particular period.  

(f) Changes in accounting policies  
The following standards, amendments to standards and interpretations became effective for annual 

reporting periods beginning on or after January 1, 2023: 

• 

• 

• 

• 

• 

IFRS 17 Insurance contracts: This standard is aimed at reporting entities who are insurers. 

IAS 12 Income taxes: Amendments clarifying how companies account for deferred tax on transactions 

such as leases and decommissioning obligations. 

IAS 8: Accounting policies, changes in accounting estimates and errors: Amendments enabling entities 

to distinguish between accounting policies and accounting estimates. 

IAS 1 Presentation of financial statements: Amendments clarifying which accounting policies and 

accounting estimates preparers need to disclose. 

IFRS 16 Leases: Amendments relating to sale and leaseback transactions. 

In Note 23. Income taxes, we disclosed the impact of the amendments to IAS 12. None of the other new 

standards, amendments to standards and interpretations had a material impact on our financial statements. 

No changes in accounting policies occurred in 2023. 

3. Significant Accounting Policies  

The Company has consistently applied the following accounting policies to all periods presented in these 

consolidated financial statements. 

(a) Basis of consolidation 
(i) Subsidiaries 

Subsidiaries are entities controlled by the Company. The Company controls an entity when it has power over 

the entity, 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. The Company reassesses whether or not it 

controls an entity if facts and circumstances indicate that there are changes to one or more of these 

elements. The financial statements of subsidiaries are included in the consolidated financial statements from 

the date on which control commences until the date on which control ceases. 

(ii) Non-controlling interests (“NCI”) 

NCI are measured at their proportionate share of the acquiree's identifiable net assets at the acquisition 

date. Changes in the Company's interest in a subsidiary that do not result in a loss of control are accounted 

for as equity transactions. 

 
 
 
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(iii) Loss of control 

When the Company loses control over a subsidiary, it derecognizes the assets and liabilities of the subsidiary, 

and any non-controlling interests and other components of equity. Any resulting gain or loss is recognized in 

profit or loss. Any interest retained in the former subsidiary is measured at fair value when control is lost.  

(iv) Transactions eliminated on consolidation 

Intra-group balances and transactions, and any unrealized income and expenses arising from intra-group 

transactions, are eliminated. Unrealized gains arising from transactions with equity-accounted investees are 

eliminated against the investment to the extent of the Company’s interest in the investee. Unrealized losses 

are eliminated in the same way as unrealized gains, but only to the extent that there is no evidence of 

impairment. 

(v) Associates 

Associates are entities over which the Company has significant influence. Significant influence is the power to 

participate in the financial and operating policy decisions of the investee but is not control or joint control 

over those policies.  

Investments in associates are accounted for in the consolidated financial statements using the equity method 

of accounting. Equity accounting involves recording the investment in associates initially at cost, and 

recognizing the Company’s share of the post-acquisition results of associates in the consolidated income 

statement and the Company’s share of post-acquisition other comprehensive income in consolidated other 

comprehensive income. The cumulative post-acquisition movements are adjusted against the carrying 

amount of the investments in associates in the consolidated statement of financial position. 

When the Company’s share of losses in an associate equals or exceeds its interest in the associate, the 

Company does not recognize further losses unless it has incurred or guaranteed obligations in respect of the 

associate. 

(b) Classes of financial instruments  
Financial instruments are both primary financial instruments, such as receivables and payables, and financial 

derivatives. For the Company’s primary financial instruments, reference is made to the treatment per the 

corresponding balance sheet item. 

Financial derivatives are valued at fair value. Upon first recognition, financial derivatives are recognized at fair 

value and then revalued as at balance sheet date. Changes in the fair value of derivatives are generally 

recognized in profit or loss. If the Company is involved with hybrid contracts, the Company applies the 

following with regard to the embedded derivatives in the hybrid contract. Embedded derivatives are 

separated from the host contract and accounted for separately if the host contract is not a financial asset and 

the following criteria are met: 

• 

• 

• 

the economic characteristics and risk of the embedded derivative are not closely related to the 

economic characteristics and risks of the host contract; 

a separate instrument with the same terms as the embedded derivative would meet the definition of a 

derivate; and 

the hybrid contract is not measured at fair value with changes in fair value recognized in profit or loss.  

If an embedded derivative is separated from the hybrid contract, the host contract is accounted for in 

accordance with the determined policies for such a contract. The embedded derivative is accounted for in 

accordance with the Company’s principles for the applicable derivatives.   

 
 
 
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(c) Foreign currencies  
(i) Foreign currency transactions 

Foreign currency transactions are translated into the functional currency using the exchange rates prevailing 

at the dates of the transactions. 

Monetary assets and liabilities denominated in foreign currencies are translated into the functional currency 

at the exchange rate at the reporting date. Non-monetary assets and liabilities denominated in foreign 

currencies that are measured at fair value are translated into the functional currency at the exchange rate 

when the fair value was determined. Foreign currency differences are generally recognized in profit or loss. 

Non-monetary items that are measured based on historical cost in a foreign currency are translated at the 

exchange rate prevailing at the date of the transaction. 

(ii) Foreign operations 

The assets and liabilities of foreign operations are translated into euro at exchange rates at the reporting 

date. The income and expenses of foreign operations are translated into euros at the exchange rates at the 

dates of the transactions. Foreign currency differences are recognized in OCI and accumulated in the 

translation reserve, except to the extent that the translation difference is allocated to NCI. 

(d) Revenue 
Revenues to date have consisted principally of non-refundable upfront fees and research and development 

service fees in connection with collaboration and license agreements. The Company recognizes revenue 

when its customers obtain control of promised goods or services, in an amount that reflects the 

consideration that the Company expects to receive in exchange for those goods and services. Revenue is 

recognized for agreements that are in scope of IFRS 15 Revenue from contracts with customers, based on the 

following five steps: 

(i) Identify the contract 

The Company entered into collaboration and license agreements in which the Company licenses its 

intellectual property and/or provides research and development services. These arrangements include 

upfront payments, milestone payments based on clinical and regulatory criteria, research and development 

service fees and future sales-based milestones and sales-based royalties. In some cases, concurrently with 

the collaboration and license agreements, the Company enters into share purchase agreements with the 

customer. If this is the case, the Company analyzes whether the criteria to combine contracts, as set out by 

IFRS 15, are met. 

(ii) Identify performance obligations 

Contracts with customers can have one or more distinct performance obligations under IFRS 15. Identifying 

the performance obligations is based on an assessment of whether the promises in an agreement are 

capable of being distinct and are distinct from the other promises to transfer goods and/or services in the 

context of the contract. The Company assessed that there is one performance obligation in our material 

ongoing collaboration and license agreements, for the transfer of a license combined with performance of 

research and development services. 

This is because the Company considers the two obligations cannot be distinct in the context of the contract as 

the licenses have no stand-alone value without the Company being involved in the research and development 

collaboration and that there is interdependence between the license and the research and development 

services to be provided. 

 
 
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(iii) Determine the transaction price 

Our research and collaboration agreements include non-refundable upfront payments; equity components; 

milestone payments, the receipt of which is dependent upon the achievement of certain clinical, regulatory or 

commercial milestones; royalties on sales and research and development service fees. 

a.  Non-refundable upfront payments or license fees 

If the license to the Company’s intellectual property is determined to be distinct from the other performance 

obligations identified in the arrangement, the Company recognizes revenue from non-refundable upfront 

fees allocated to this license at the point in time the license is transferred to the customer and the customer 

has the right to use the license. 

For all our material ongoing research and collaboration agreements, the Company considers the 

performance obligations related to the transfer of the license as not distinct from the other promises to 

transfer goods and/or services; the Company uses judgement to assess the nature of the combined 

performance obligation to determine whether the combined performance obligation is satisfied over time or 

at a point in time. If over time, revenue is then recognized based on a pattern that best reflects the transfer of 

control of the service to the customer. 

b.  Milestone payments other than sales-based milestones 

A milestone payment, being a variable consideration, is only included in the transaction price to the extent it 

is highly probable that a significant reversal in the amount of cumulative revenue recognition will not occur 

when the uncertainty associated with the variable consideration is subsequently resolved. The Company 

estimates the amount to be included in the transaction price upon achievement of the milestone event. The 

transaction price is then allocated to each performance obligation on a stand-alone selling price basis, for 

which the Company recognizes revenue as or when the performance obligations under the contract are 

satisfied. At the end of each reporting period, the Company re-evaluates the probability of achievement of 

such milestones and any related constraint, 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 

earnings in the period of adjustment. 

c.  Research and development service fees 

Our collaboration and license agreements may include reimbursement for research and development 

services. R&D services are performed and satisfied over time because the customer simultaneously receives 

and consumes the benefits provided by us. Revenue associated with such R&D service fees is then recognized 

based on a pattern that best reflects the transfer of control of the service to the customer. 

d.  Sales based milestone payments and royalties 

Our material collaboration and license agreements include sales-based royalties, including commercial 

milestone payments based on the level of sales. The Company concluded that the licenses are not the 

predominant items to which the royalties and commercial milestone payments relate. Related revenue will be 

recognized as the subsequent underlying sales occur. 

(iv) Allocate the transaction price 

An entity shall allocate the transaction price to each performance obligation identified in a contract on a 

relative stand-alone selling price basis. As our collaboration and license agreements only contain one single 

performance obligation, the transaction price is entirely allocated to this single performance obligation. 

 
 
 
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(v) Recognize revenue 

Revenue is recognized when the customer obtains control of the goods and/or services as provided in the 

research and collaboration agreements. Control can be transferred over time or at a point in time, which 

results in the recognition of revenue either over time or at a point in time. 

Our research and collaboration agreements only contain one performance obligation, for which the 

Company’s performance creates and subsequently enhances assets (e.g. exploitable compounds) that the 

customers control as the assets are created and/or enhanced. As such, the Company recognizes revenue 

over time. 

The recognition of revenue over time is based on a pattern that best reflects the satisfaction of the related 

performance obligation, applying the input method. The input method estimates the satisfaction of the 

performance obligation as the percentage of labor hours incurred compared to the total estimated labor 

hours required to complete the promised services. 

(e) Other income  
Other income includes amounts earned from third parties and are recognized when earned in accordance 

with the substance and under the terms of the related agreements and when it is probable that the economic 

benefits associated with the transaction will flow to the Company and the amount of the income can be 

measured reliably. The grants are recognized in other income on a systematic basis over the period the 

Company recognizes as expenses the related costs for which the grants are expected to compensate. 

(f) Government grants — WBSO  
The WBSO (“afdrachtvermindering speur- en ontwikkelingswerk”) is a Dutch fiscal facility that provides 

subsidies to companies, knowledge centers and self-employed people who perform research and 

development activities (as defined in the “WBSO Act”). Under this Act, a contribution is paid towards the labor 

costs of employees directly involved in research and development. The contribution is in the form of a 

reduction of payroll taxes and social security contributions recognized on a net basis within the labor costs. 

This reduction of payroll taxes and social security contributions is classified under research and 

developments costs. 

(Government) Grant income is not recognized until there is reasonable assurance that the Company will 

comply with the conditions attached to them. (Government) Grants are recognized in profit or loss on a 

systematic basis over the period the Company recognizes as expenses the related costs for which the grants 

are intended to compensate. 

(g) Employee benefits  
(i) Short-term employee benefits 

Short-term employee benefits are expensed as the related service is provided. A liability is recognized for the 

amount expected to be paid if the Company has a present legal or constructive obligation to pay this amount 

as a result of past service provided by the employee and the obligation can be estimated reliably. 

(ii) Share-based payment transactions  

The grant-date fair value of equity-settled share-based payment awards granted to employees is generally 

recognized as an expense, with a corresponding increase in equity, over the vesting period of the awards. The 

amount recognized as an expense is adjusted to reflect the number of awards for which the related service 

and non-market performance conditions are expected to be met, such that the amount ultimately recognized 

is based on the number of awards that meet the related service conditions at the vesting date. For share-

based payment awards with non-vesting conditions, the grant-date fair value of the share-based payment is 

 
 
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measured to reflect such conditions and there is no true-up for differences between expected and actual 

outcomes. 

(iii) Pension obligations  

The Company operates defined contribution pension plans for all employees funded through payments to 

insurance companies. The Company has no legal or constructive obligation to pay further contributions once 

the contributions have been paid. The contributions are recognized as employee benefit expense when 

employees have rendered the service entitling them to the contributions. Prepaid contributions are 

recognized as an asset to the extent that a cash refund or a reduction in the future payments is available.  

(h) Taxation  
Income tax expense represents the sum of the tax currently payable and deferred tax. It is recognized in 

profit or loss except to the extent that it relates to a business combination, or items recognized directly in 

equity or in OCI. 

(i) Current tax  

The tax currently payable is based on taxable profit for the year. Taxable profit differs from profit as reported 

in the income statement because of items of income or expense that are taxable or deductible in other years 

and items that are never taxable or deductible. The Company’s liability for current tax is calculated using tax 

rates that have been enacted or substantively enacted by the end of the reporting period. 

(ii) Deferred tax  

Deferred tax is recognized on differences between the carrying amounts of assets and liabilities in the 

financial statements and the corresponding tax bases used in the computation of taxable profit. 

The carrying amount of deferred 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 profits will be available to allow all or part of the 

asset to be recovered. Since the Company does not expect to be profitable in the foreseeable future, its 

deferred tax assets are valued at nil. 

Deferred tax assets and liabilities are measured at the tax rates that are expected to apply in the period in 

which the liability is settled or the asset realized, based on tax rates (and tax laws) that have been enacted or 

substantively enacted by the end of the reporting period. The measurement of deferred tax liabilities and 

assets reflects the tax consequences that would follow from the manner in which the Company expects, at 

the end of the reporting period, to recover or settle the carrying amount of its assets and liabilities. 

Deferred tax assets and liabilities are offset when there is a legally enforceable right to offset 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.  

(i) Property, plant and equipment 
(i) Recognition and measurement 

Items of property, plant and equipment are measured at cost less accumulated depreciation and any 

accumulated impairment losses. If significant parts of an item of property, plant and equipment have 

different useful lives, then they are accounted for as separate items (major components) of property, plant 

and equipment. Any gain or loss on disposal of an item of property, plant and equipment is recognized in 

profit or loss. 

 
 
 
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(ii) Depreciation 

Depreciation is calculated to write off the cost of items of property, plant and equipment less their estimated 

residual values using the straight-line method over their estimated useful lives and is recognized in profit or 

loss. Right-of-use assets are depreciated over the shorter of the lease term and their useful lives unless it is 

reasonably certain that the Company will obtain ownership by the end of the lease term. 

The estimated useful lives of property, plant and equipment for current and comparative periods are as 

follows: 

• 

• 

• 

Buildings and leasehold improvements:  

5 - 10 years; 

Laboratory equipment:  

Other:  

5 years; 

3 - 5 years. 

Depreciation methods, useful lives and residual values are reviewed at each reporting date and adjusted if 

appropriate. 

(j) Intangible assets 
Expenditure on research activities is recognized as an expense in the period in which it is incurred. An 

internally-generated intangible asset arising from development (or from the development phase of an 

internal project) is recognized if, and only if, all of the following have been demonstrated: 

• 

• 

• 

• 

• 

• 

• 

the technical feasibility of completing the intangible asset so that it will be available for use or sale; 

the intention to complete the intangible asset and use or sell it; 

the ability to use or sell the intangible asset; 

how the intangible asset will generate probable future economic benefits; 

the availability of adequate technical, financial and other resources to complete the development and to 

use 

or sell the intangible asset; and 

the ability to measure reliably the expenditure attributable to the intangible asset during its 

development. 

The amount initially recognized for internally-generated intangible assets is the sum of the expenditure 

incurred from the date when the intangible asset first meets the recognition criteria listed above. Where no 

internally generated intangible asset can be recognized, development expenditures are recognized in the 

consolidated statements of profit and loss and other comprehensive income in the period in which they are 

incurred. 

Due to uncertainties inherent to the development and registration with the relevant healthcare authorities of 

its products, the Company estimates that the conditions for capitalization are not met until the regulatory 

procedures required by such healthcare authorities have been finalized. The Company currently does not 

own products that have been approved by the relevant healthcare authorities and this has resulted in all 

development costs being recognized as an expense in the period in which they are incurred.  

(k) Impairment of assets  
At the end of each reporting period, the Company reviews the carrying amounts of its non-current assets, 

including right-of-use assets, to determine whether there is any indication that those assets have suffered an 

impairment loss. If any such indication exists, the recoverable amount of the asset is estimated in order to 

determine the extent of the impairment loss (if any). Where it is not possible to estimate the recoverable 

amount of an individual asset, the Company estimates the recoverable amount of the cash-generating unit to 

which the asset belongs. Where a reasonable and consistent basis of allocation can be identified, corporate 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
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assets are also allocated to individual cash-generating units, or otherwise they are allocated to the smallest 

group of cash-generating units for which a reasonable and consistent allocation basis can be identified. 

The recoverable amount is the higher of fair value less costs of disposal and value in use. 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 for which 

the estimates of future cash flows have not been adjusted. 

If the recoverable amount of an asset (or cash-generating unit) is estimated to be less than its carrying 

amount, the carrying amount of the asset (or cash-generating unit) is reduced to its recoverable amount. An 

impairment loss is recognized immediately in profit or loss. 

Where an impairment loss subsequently reverses, the carrying amount of the asset (or cash-generating unit) 

is increased to the revised estimate of its recoverable amount, but so that the increased carrying amount 

does not exceed the carrying amount that would have been determined had no impairment loss been 

recognized for the asset (or cash-generating unit) in prior years. A reversal of an impairment loss is 

recognized immediately in profit or loss, unless the relevant asset is carried at a revalued amount, in which 

case the reversal of the impairment loss is treated as a revaluation increase.  

(l) Financial assets  
All financial assets are recognized and derecognized on the trade date where the purchase or sale of a 

financial asset is under a contract whose terms require delivery of the financial asset within the timeframe 

established by the market concerned, and are initially measured at fair value and subsequently measured at 

amortized cost or fair value on the basis of the entity’s business model for managing the financial assets and 

the contractual cash flow characteristics of the financial assets. 

Specifically:  

• 

• 

debt instruments that are held within a business model whose objective is to collect the contractual 

cash flows, and that have contractual cash flows that are solely payments of principal and interest on 

the principal amount outstanding, are measured subsequently at amortized cost, and 

all other debt investments and equity investments are measured subsequently at fair value through 

profit or loss (“FVTPL”). 

The Company applies the IFRS 9 simplified approach to measuring expected credit losses which uses a 

lifetime expected loss allowance for all trade receivables. To measure the expected credit losses, trade 

receivables have been grouped based on shared credit risk characteristics and the days past due. Trade 

receivables are written off when there is no reasonable expectation of recovery. Indicators that there is no 

reasonable expectation of recovery include, amongst others, the failure of a debtor to engage in a repayment 

plan with the group, and a failure to make contractual payments for a period of greater than 120 days past 

due. Impairment losses on trade receivables and contract assets are presented as net impairment losses 

within operating profit. Subsequent recoveries of amounts previously written off are credited against the 

same line item. 

The Company derecognizes a financial asset when the contractual rights to the cash flows from the asset 

expire, or the Company transfers the right to receive the contractual cash flows on the financial asset in a 

transaction in which substantially all the risks and rewards of ownership of the financial asset are transferred. 

 
 
 
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(m) Cash and cash equivalents  
Cash and cash equivalents include cash on hand and all highly liquid investments with original maturities of 

three months or less that are readily convertible to a known amount of cash and bear an insignificant risk of 

change in value.  

(n) Financial liabilities and equity instruments  
Debt and equity instruments are classified as either financial liabilities or as equity in accordance with the 

substance of the contractual arrangement.  

(i) Equity instruments  

An equity instrument is any contract that evidences a residual interest in the assets of an entity after 

deducting all of its liabilities. Equity instruments issued by the Company are recognized at the proceeds 

received, net of direct issue costs.  

(ii) Compound financial instruments 

Compound financial instruments issued by the Company comprise convertible notes denominated in euro 

that can be converted to share capital at the option of the holder, when the number of shares to be issued is 

fixed and does not vary with changes in fair value.  

The component parts of convertible loan notes issued by the Group are classified separately as financial 

liabilities and equity in accordance with the substance of the contractual arrangements and the definitions of 

a financial liability and an equity instrument. A conversion option that will be settled by the exchange of a 

fixed amount of cash or another financial asset for a fixed number of the Company’s own equity instruments 

is an equity instrument. At the date of issue, the fair value of the liability component is estimated using the 

prevailing market interest rate for a similar non-convertible instrument. 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 conversion option classified as equity is determined by deducting the amount of the liability component 

from the fair value of the compound instrument as a whole. This is recognized and included in equity, net of 

income tax effects, and is not subsequently remeasured. In addition, the conversion option classified as 

equity will remain in equity until the conversion option is exercised, in which case, the balance recognized in 

equity will be transferred to share premium. Where the conversion option remains unexercised at the 

maturity date of the convertible loan note, the balance recognized in equity will be transferred to 

accumulated losses. No gain or loss is recognized in profit or loss upon conversion or expiration of the 

conversion option. 

Transaction costs that relate to the issue of the convertible loan notes are allocated to the liability and equity 

components in proportion to the allocation of the gross proceeds. Transaction costs relating to the equity 

component are recognized directly in equity. Transaction costs relating to the liability component are 

included in the carrying amount of the liability component and are amortized over the lives of the convertible 

loan notes using the effective interest method. 

Interest related to the financial liability is recognized in profit or loss. 

(iii) Financial liabilities at fair value through profit or loss 

Financial liabilities held for trading are classified as at fair value through profit or loss (“FVTPL”). A financial 

liability is classified as held for trading if it is a derivative (except for a derivative that is a financial guarantee 

contract or a designated and effective hedging instrument). 

 
 
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Financial liabilities at FVTPL are measured at fair value, with any gains or losses arising on changes in fair 

value recognized in profit or loss. The net gain or loss recognized is included in the ‘results related to financial 

liabilities measured at fair value through profit or loss’ line item in profit or loss. 

Fair value is determined in the manner described in note 5. 

(iv) Other financial liabilities  

Other financial liabilities, including borrowings, are initially measured at fair value, net of transaction costs 

incurred, and are subsequently measured at amortized cost using the effective interest method, with interest 

expense recognized on an effective yield basis. 

The effective interest method is a method of calculating the amortized cost of a financial liability and of 

allocating interest expense over the relevant period. The effective interest rate is the rate that exactly 

discounts estimated future cash payments through the expected life of the financial liability, or, where 

appropriate, a shorter period. 

Borrowings and other financial liabilities are classified as ‘non-current liabilities,’ other than liabilities with 

maturities up to one year, which are classified as “current liabilities”. 

The Company derecognizes financial liabilities when the liability is discharged, cancelled or expired. For all 

financial liabilities, the fair value approximates its carrying amount.  

(v) Offsetting  

Financial assets and financial liabilities are offset and the net amount presented in the statement of financial 

position when, and only when, the Company currently has a legally enforceable right to set off the amounts 

and it intends either to settle them on a net basis or to realize the asset and settle the liability simultaneously. 

(o) Leases 
The Company assesses whether a contract is or contains a lease when it obtains the right to control the use 

of an identified asset for a period of time, in exchange for consideration. The Company recognizes a right-of-

use asset and a corresponding lease liability with respect to all lease arrangements in which it is the lessee, 

except for short-term leases (defined as leases with a lease term of 12 months or less) and leases of low value 

assets (such as tablets and personal computers, small items of office furniture and telephones). For these 

leases, the Company recognizes the lease payments in operating costs on a straight-line basis over the term 

of the lease unless another systematic basis is more representative of the time pattern in which economic 

benefits from the leased assets are consumed. 

The lease liability is initially measured at the present value of the lease payments that are not paid at the 

commencement date, discounted by using the interest rate implicit in the lease. When the interest rate 

implicit in the lease cannot be readily determined, the Company uses its incremental borrowing rate. 

Lease payments included in the measurement of the lease liability comprise:  

• 

• 

• 

• 

Fixed lease payments (including in-substance fixed payments), less any lease incentives receivable;  

Variable lease payments that depend on an index or rate, initially measured using the index or rate at 

the commencement date;  

The amount expected to be payable by the Company under residual value guarantees;  

The exercise price of purchase options, if the Company is reasonably certain to exercise the options; 

and  

 
 
 
PAGE 56 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

• 

Payments of penalties for terminating the lease, if the lease term reflects the exercise of an option to 

terminate the lease.  

The lease liability is presented as a separate line in the consolidated statement of financial position. In the 

cash flow statement, repayments of the principal portion of the lease liability are included in financing 

activities. Payments relating to the interest component of the lease liability are included in operating 

activities. Short-term lease payments and payments for leases of low-value assets are included in operating 

activities. 

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:  

• 

• 

The lease term has changed or there is a significant event or change in circumstances resulting in a 

change in the assessment of exercise of a purchase option, in which case the lease liability is 

remeasured by discounting the revised lease payments using a revised discount rate.  

The lease payments change due to changes in an index or rate or a change in expected payment under 

a guaranteed residual value, in which cases the lease liability is remeasured by discounting the revised 

lease payments using an unchanged discount rate (unless the lease payments change is due to a 

change in a floating interest rate, in which case a revised discount rate is used).  

• 

A lease contract is modified and the lease modification is not accounted for as a separate lease, in which 

case the lease liability is remeasured based on the lease term of the modified lease by discounting the 

revised lease payments using a revised discount rate at the effective date of the modification.  

The right-of-use asset comprises the initial measurement of the corresponding lease liability, lease payments 

made at or before the commencement day, less any lease incentives received and any initial direct costs. It is 

subsequently measured at cost less accumulated depreciation and impairment losses.  

Whenever the Company incurs an obligation for costs to dismantle and remove a leased asset, restore the 

site on which it is located or restore the underlying asset to the condition required by the terms and 

conditions of the lease, a provision is recognized and measured under IAS 37. To the extent that the costs 

relate to a right-of-use asset, the costs are included in the related right-of-use asset, unless those costs are 

incurred to produce inventories. 

Right-of-use assets are depreciated over the shorter period of lease term and useful life of the underlying 

asset. If a lease transfers ownership of the underlying asset or the cost of the right-of-use asset reflects that 

the Company expects to exercise a purchase option, the related right-of-use asset is depreciated over the 

useful life of the underlying asset. The depreciation starts at the commencement date of the lease.  

The right-of-use asset is presented under Property, Plant and Equipment in the consolidated statement of 

financial position, in the category Buildings and leasehold improvements.  

As a practical expedient, IFRS 16 permits a lessee not to separate non-lease components, and instead account 

for any lease and associated non-lease components as a single arrangement. The Company has used this 

practical expedient. 

 
 
PAGE 57 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

(p) Non-current assets held for sale 
Non-current assets (and disposal groups) classified as held for sale are measured at the lower of carrying 

amount and fair value less costs to sell. 

Non-current assets and disposal groups are classified as held for sale if their carrying amount will be 

recovered through a sale transaction rather than through continuing use. This condition is regarded as met 

only when the sale is highly probable and the asset (or disposal group) is available for immediate sale in its 

present condition. Management must be committed to the sale which should be expected to qualify for 

recognition as a completed sale within one year from the date of classification. 

When the Company is committed to a sale plan involving loss of control of a subsidiary, all of the assets and 

liabilities of that subsidiary are classified as held for sale when the criteria described above are met, 

regardless of whether the Company will retain a non-controlling interest in its former subsidiary after the 

sale. When the Company is committed to a sale plan involving disposal of an investment in an associate or, a 

portion of an investment in an associate, the investment, or the portion of the investment in the associate, 

that will be disposed of is classified as held for sale when the criteria described above are met. The Company 

then ceases to apply the equity method in relation to the portion that is classified as held for sale. Any 

retained portion of an investment in an associate that has not been classified as held for sale continues to be 

accounted for using the equity method. 

4. New standards and interpretations not yet adopted 

A number of new standards, amendments to standards and interpretations are effective for annual periods 

beginning after January 1, 2024 and have not been applied in preparing these consolidated financial 

statements. There are no standards that are not yet effective and that would be expected to have a material 

impact on the Company in the current or future reporting periods and on foreseeable future transactions. 

The Company does not plan to adopt these standards early. 

5. Financial Risk Management  

5.1. Financial risk factors 
The Company’s activities expose it to a variety of financial risks: market risk (including currency risk, interest 

rate risk and price risk), credit risk and liquidity risk. The Company’s overall financial risk management seeks 

to minimize potential adverse effects resulting from unpredictability of financial markets on the Company’s 

financial performance. 

Financial risk management is carried out by the finance department. The finance department identifies and 

evaluates financial risks and proposes mitigating actions if deemed appropriate.  

(a) Market risk  

Market risk is the risk that changes in market prices – such as foreign exchange rates, interest rates and 

equity prices – will affect the Company’s income or the value of its holdings of financial instruments. The 

objective of market risk management is to manage and control market risk exposures within acceptable 

parameters, while optimizing the return. 

Foreign exchange risk 

Foreign exchange risk arises from future commercial transactions and recognized assets and liabilities in 

foreign currencies, primarily with respect to the U.S. dollar. The Company has an exposure associated with 

the time delay between entering into a contract, budget or forecast and the realization thereof. The Company 

operates a foreign exchange policy to manage the foreign exchange risk against the functional currency 

based on the Company’s cash balances and the projected future spend per major currency. 

 
 
 
 
PAGE 58 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

At year-end, a substantial amount of our cash balances are denominated in U.S. Dollars. This amount reflects 

our current expectation of future expenditure in U.S. dollars. 

At December 31, 2023 our net position of financial instruments denominated in U.S. dollars was a net liability 

of € 726,000 (2022: net asset of € 78,630,000). Foreign currency denominated receivables and trade payables 

are short term in nature (generally 30 to 45 days). As a result, the foreign exchange results recognized in 2023 

and 2022 are mainly caused by the cash balance denominated in U.S. dollars. 

A reasonably possible weakening of the U.S. dollar by 10% against the functional currency of the Company at 

December 31, 2023 would have decreased our net loss by € 73,000 (2022: increased by € 7,863,000). A 10% 

strengthening of the U.S. dollar against the functional currency of the Company would have an equal but 

opposite effect on our net loss. The analysis assumes that all other variables, in particular interest rates, 

remain constant. 

Price risk 

The market prices for the production of preclinical and clinical materials and services as well as external 

contracted research may vary over time. Currently, the commercial prices of any of the Company’s future 

product candidates is uncertain. When development products near the regulatory approval date or potential 

regulatory approval date, the uncertainty of potential sales prices decreases. The Company is not exposed to 

commodity price risk. 

Furthermore, the Company does not hold investments designated for sale and is therefore not exposed to 

equity securities price risk.  

Cash flow and fair value Interest rate risk  

The Company’s interest rate risk arises from current accounts and deposits and the sensitivity analysis below 

has been determined based on the exposure to interest rates on these short-term maturity primary financial 

instruments.  

A 10 percent increase or decrease on actual interest rate is used when reporting interest rate risk internally to 

key management personnel and represents management’s assessment of the reasonably possible change in 

interest rates. 

As of December 31, 2023, if interest rates had been 10 percent higher, then pre-tax earnings for the year 

would have been € 259,000 higher, while if interest rates had been 10 percent lower, then pre-tax earnings 

for the year would have been € 259,000 lower. 

The Company’s exposure to interest rate risks on loans and leases is limited due to the use of fixed interest 

rates. The Company has a loan with a fixed interest rate, totaling € 4,292,000 at December 31, 2023 (2022: 

several loans with fixed interest rates totaling € 6,771,000). Details on the interest rates and maturities of 

these loans are provided in Note 14.  

(b) Credit risk  

Credit risk represents the risk of financial loss caused by default of the counterparty. The Company has no 

large receivables balances with external parties outside of cash and cash equivalents. Our cash management 

policy is focused on preserving capital, providing liquidity for operations and optimizing yield while accepting 

limited risk (Short-term credit ratings must be rated A 1/P 1/F1 at a minimum by at least one of the Nationally 

Recognized Statistical Rating Organizations (“NRSROs”) specifically Moody’s, Standard & Poor’s or Fitch. Long-

term credit rating must be rated A2 or A at a minimum by at least one NRSRO). As of December 31, 2023, the 

Company is in compliance with its cash management policy. 

 
 
PAGE 59 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

At December 31, 2023 and December 31, 2022, all of our cash and cash equivalents were held at four large 

institutions, Rabobank, ABN Amro, BNP Paribas and Wells Fargo. All institutions are highly rated (Moody’s 

long-term debt ratings of Aa2, Aa3, Aa2 and Aa2 for Rabobank, ABN Amro, BNP Paribas and Wells Fargo 

respectively) with sufficient capital adequacy and liquidity metrics. 

There are no financial assets past due date or impaired. No credit limits were exceeded during the reporting 

period. 

(c) Liquidity risk  

Liquidity risk represents the risk that an entity will encounter difficulty in meeting obligations associated with 

its financial liabilities. Prudent liquidity risk management implies ensuring sufficient availability of cash 

resources for funding of operations and planning to raise cash if and when needed, either through issue of 

shares or through credit facilities. Management monitors rolling forecasts of the Company’s liquidity reserve 

on the basis of expected cash flow. 

The table below analyzes ProQR’s undiscounted liabilities into relevant maturity groupings based on the 

remaining period at year-end until the contractual maturity date:  

dsssds  

At December 31, 2023 

Borrowings  

Lease liabilities 

Trade payables and other payables   

At December 31, 2022 

Borrowings  

Lease liabilities 

Trade payables and other payables   

Less than  
1 year 

Between  
1 and 2 years 

Between  
2 and 5 years 

€ 1,000 

€ 1,000 

€ 1,000 

 — 

 2,288 

 11,709 

 13,997 

 4,583 

 2,496 

 — 

 7,079 

 — 

 7,487 

 — 

 7,487 

Less than  
1 year 

Between  
1 and 2 years 

Between  
2 and 5 years 

€ 1,000 

€ 1,000 

€ 1,000 

 2,500 

 2,053 

 10,197 

 14,750 

 2,455 

 2,212 

 — 

4,667  

 2,644 

 6,637 

 — 

9,281  

Over 
5 years 

€ 1,000 

 — 

 6,240 

 — 

 6,240 

Over 
5 years 

€ 1,000 

— 

 7,743 

 — 

7,743  

Our future capital requirements and the period for which our existing resources will support our operations 

may vary significantly from what we expect. Our monthly spending levels will vary based on new and ongoing 

development and corporate activities. Because the length of time and activities associated with successful 

development of our product candidates is highly uncertain, we are unable to estimate the actual funds we 

will require for development of our product candidates. 

5.2. Capital risk management 
The Company’s objectives when managing capital are to safeguard the Company’s ability to continue as a 

going concern in order to provide returns for shareholders, benefits for other stakeholders and to maintain 

an optimal capital structure to reduce the cost of capital. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 60 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

In order to maintain or adjust the capital structure, the Company may adjust the amount of dividends paid to 

shareholders (although at this time the Company does not have retained earnings and is therefore currently 

unable to pay dividends), return capital to shareholders, issue new shares or sell assets to reduce debt. 

The total amount of equity as recorded on the balance sheet is managed as capital by the Company. 

5.3. Fair value measurement 
For financial instruments that are measured on the balance sheet at fair value, IFRS 13 requires disclosure of 

fair value measurements by level of the following fair value measurement hierarchy: 

• 

• 

• 

quoted prices (unadjusted) in active markets for identical assets or liabilities (level 1); 

inputs other than quoted prices included within level 1 that are observable for the asset or liability, 

either directly (that is, as prices) or indirectly (that is, derived from prices) (level 2); and 

inputs for the asset or liability that are not based on observable market data (that is, unobservable 

inputs) (level 3). 

Fair value of financial assets and liabilities that are measured at fair value on a recurring basis 

Some of the Company’s financial assets and liabilities are measured at fair value at the end of each reporting 

period. The following table gives information about how the fair values of these financial assets and liabilities 

are determined (in particular, the valuation technique and inputs used). 

 
 
 
 
PAGE 61 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Financial 
assets and 
liabilities 

Investment in 
Phoenicis 
Therapeutics, 
Inc. 

Valuation technique and key inputs 

Market comparison technique: The valuation model is 
based on market multiples derived from quoted prices 
of companies comparable to the investee, adjusted for 
the effect of the non-marketability of the equity 
securities, and the result of the investee. The estimate 
is adjusted for the net debt of the investee. 

Significant 
unobservable 
inputs 

Adjusted 
market multiple 

Relationship and 
sensitivity of significant 
unobservable inputs to 
fair value 

The estimated fair value 
would increase (decrease) if 
the adjusted market 
multiple were higher 
(lower). 

Investment in 
Yarrow 
Biotechnology, 
Inc. 

Market comparison technique: The valuation model is 
based on market multiples derived from quoted prices 
of companies comparable to the investee, adjusted for 
the effect of the non-marketability of the equity 
securities, and the result of the investee. The estimate 
is adjusted for the net debt of the investee. 

Adjusted 
market multiple 

The estimated fair value 
would increase (decrease) if 
the adjusted market 
multiple were higher 
(lower). 

Warrants  

Black-Scholes model. The following variables were 
taken into consideration: current underlying price of 
the Company's shares, options strike price, expected 
life, historical volatility of ProQR share returns over a 
period equal to the expected life, risk-free rate: based 
on the US Treasury yield curve rates per the valuation 
date (interpolated) for the expected life. 

None 

Not applicable 

The investments in Phoenicis Therapeutics, Inc and Yarrow Biotechnology, Inc are measured using valuation 

methods based on so-called Level 3 inputs. Level 3 inputs are unobservable inputs. Changing one or more of 

the unobservable inputs to reflect reasonably possible alternative assumptions would not significantly 

change the fair value determined for Phoenicis Therapeutics, Inc and Yarrow Biotechnology, Inc. 

Warrants are measured using valuation methods based on so-called Level 2 inputs. Level 2 inputs are inputs 

other than quoted prices that are observable for the liability, either directly or indirectly. 

The carrying amount of all financial assets and financial liabilities is a reasonable approximation of the fair 

value and therefore information about the fair values of each class has not been disclosed. 

Share options and restricted stock units (“RSUs”) granted to employees and consultants are measured at the 

fair value of the equity instruments granted. The fair value of options is determined through the use of an 

option-pricing model considering, among others, the following variables:  

• 

• 

• 

• 

• 

• 

the exercise price of the option;  

the expected life of the option;  

the current value of the underlying shares;  

the expected volatility of the share price;  

the dividends expected on the shares; and  

the risk-free interest rate for the life of the option. 

6. Segment Information  

The Company operates in one reportable segment, which comprises the discovery and development of 

innovative, RNA based therapeutics. The management board is identified as the chief operating decision 

maker. The management board reviews the operating results regularly to make decisions about resources 

and to assess overall performance. 

 
 
 
 
PAGE 62 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Revenues are generated from external customers whose main registered offices are all geographically 

located in the United States. Substantially all non-current assets of the Company are located in the 

Netherlands. The amounts provided to the management board with respect to total assets and liabilities are 

measured in a manner consistent with that of the financial statements. 

7. Property, Plant and Equipment 

dsssds  

Balance at January 1, 2022 

Cost   

Accumulated depreciation 

Carrying amount 

Additions 

Depreciation 

Effect of lease modification (note 25) 

Transfer 

Disposals 

Movement for the period 

Balance at December 31, 2022 

Cost   

Accumulated depreciation 

Carrying amount 

Additions 

Depreciation 

Effect of lease modification (note 25) 

Transfer 

Disposals - cost 

Accumulated depreciation on disposals 

Movement for the period 

Balance at December 31, 2023 

Cost   

Accumulated depreciation 

Carrying amount 

Buildings and 
Leasehold 
 improvements 

Laboratory 
 equipment 

Other 

Total 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

 22,231 

 (6,217) 

 16,014 

 62 

 (1,852) 

 592 

 (22) 

 — 

 (1,220) 

 22,863 

 (8,069) 

 14,794 

 30 

 (1,951) 

 1,859 

 23 

 — 

 — 

 (39) 

 24,775 

 (10,020) 

 14,755 

 4,245 

 (2,813) 

 1,432 

 643 

 (660) 

 — 

 30 

 (6) 

 7 

 4,912 

 (3,473) 

 1,439 

 1,278 

 (546) 

 — 

 (30) 

 (252) 

 192 

 642 

 5,908 

 (3,827) 

 2,081 

 1,344 

 (1,323) 

 21 

 3 

 (9) 

 — 

 (8) 

 — 

 27,820 

 (10,353) 

 17,467 

 708 

 (2,521) 

 592 

 — 

 (6) 

 (14) 

 (1,227) 

 1,339  

 (1,332) 

 7  

 63 

 (16) 

 — 

 7 

 — 

 — 

 54 

 1,409 

 (1,348) 

 61 

 29,114 

 (12,874) 

 16,240 

 1,371 

 (2,513) 

 1,859 

 — 

 (252) 

 192 

 657 

 32,092 

 (15,195) 

 16,897 

The depreciation charge for 2023 is included in research and development costs for an amount of € 1,994,000 

(2022: € 2,088,000) and in general and administrative costs for an amount of € 519,000 (2022: € 433,000). 

Buildings and leasehold improvements include a right-of-use asset relating to the lease of our Leiden office 

and laboratory space, with a carrying amount of € 14,524,000 at December 31, 2023 (2022: € 14,484,000). 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
   
 
 
 
 
  
 
 
 
 
 
 
 
   
   
   
   
 
PAGE 63 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

8. Investments in Associates 

In May 2021, the Company obtained an 8% share in the common stock of Yarrow Biotechnology, Inc. 

(“Yarrow”). ProQR’s share in Yarrow subsequently changed to 5.1%. Although ProQR only owns 5.1% of 

Yarrow’s shares, the Company had significant influence over Yarrow by virtue of its right to appoint one of 

Yarrow’s three board members, as well as its participation in Yarrow’s policy-making process, amongst other 

factors. As such, our interest in Yarrow was initially recognized as an investment in associate. 

In October 2023, Gerard Platenburg, Chief Scientific Officer at ProQR, ended his term on Yarrow’s board of 

directors. From that moment onwards, ProQR no longer had significant influence over Yarrow. Yarrow was 

therefore derecognized as an associate and was accounted for as a financial asset, as disclosed in Note 9. 

As the carrying amount of our investment in Yarrow was € nil at December 31, 2022, ProQR did not recognize 

any further share of Yarrow’s loss from continuing operations for the period from January through October 

2023. The results related to associates amounting to € 8,000 for 2022 consisted of ProQR's share in the loss 

of Yarrow.  

dsssds  

Balance at January 1, 2022 

Share of loss from continuing operations 

Balance at December 31, 2022 

Derecognition of investment in associate (Yarrow Biotechnology, Inc.) 

Balance at December 31, 2023 

9. Investments in Financial Assets 

Yarrow Biotechnology, Inc. 

Investment in 
associate 

€ 1,000 

8 

(8) 

— 

— 

— 

As disclosed in Note 8, Gerard Platenburg, Chief Scientific Officer at ProQR, ended his term on Yarrow’s board 

of directors in October 2023. From then on, ProQR no longer had significant influence over Yarrow. Yarrow 

was therefore derecognized as an associate and was accounted for as a financial asset and measured at fair 

value.  

ProQR holds a 5.1% interest in Yarrow. The Company elected to recognize subsequent changes in the fair 

value of its investment in Yarrow in Other Comprehensive Income. In October 2023, ProQR initially 

recognized its investment in the Yarrow financial asset at € nil. As at December 31, 2023, the fair value of the 

Yarrow financial asset amounted to € nil. 

Phoenicis Therapeutics, Inc. 

In May 2019, the Company acquired a non-controlling interest in Wings Therapeutics Inc. (“Wings”) as part of 

the strategic spin out of its Dystrophic Epidermolysis Bullosa (“DEB”) activities. In January 2021, Wings merged 

into Phoenicis Therapeutics Inc. (“Phoenicis”) by means of a non-cash transaction. Consequently, Wings 

ceased to exist, and the related investment was derecognized. In 2021, a gain on disposal of associate was 

recognized amounting to € 514,000, which consisted of the € 621,000 fair value of Phoenicis equity 

instruments received by the Company, partly off-set by the derecognition of the carrying value of the 

Company’s investment in Wings of € 107,000.  

 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 64 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

ProQR holds a 3.9% interest in Phoenicis. ProQR does not have significant influence in Phoenicis. The 

Company elected to recognize subsequent changes in the fair value of its investment in Phoenicis in Other 

Comprehensive Income. In September 2023, the investment was remeasured to nil, and ProQR recognized a 

fair value loss of € 621,000 in other comprehensive income. As at December 31, 2023, the fair value of the 

Phoenicis financial asset amounted to € nil (2022: € 621,000). 

10. Other Taxes 

dsssds  

Value added tax 

All receivables are considered short-term and due within one year.  

11. Prepayments and Other Receivables  

dsssds  

Prepayments 

Eli Lilly up-front receivable 

Other receivables 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

523 

523 

607 

607 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

 793 

 — 

 745 

 1,538 

 2,449 

 56,254 

 375 

 59,078 

All receivables are considered short-term and due within one year. At December 31, 2023 and 2022, 

prepayments consisted principally of payments made by the Company for services not yet provided by 

vendors. At December 31, 2023 and 2022, other receivables consisted principally of deposits. Note 17 

Revenue describes the transaction related to the Eli Lilly up-front receivable. 

12. Cash and Cash Equivalents  

dsssds  

Cash at banks 

Deposits 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

 59,775 

 59,150 

 118,925 

 94,775 

— 

 94,775 

The cash at banks is at full disposal of the Company. Deposits are fixed for at most 3 month periods at a time. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
13. Shareholders’ Equity  

(a) Share capital  

dsssds  

Balance at January 1 

Issued for cash 

Issued for services 

Exercise of share options / vesting of RSUs 

Treasury shares issued (transferred) 

Balance at December 31 

PAGE 65 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Number of ordinary shares 

2023 

2022 

 84,246,967 

 74,865,381 

 — 

 — 

 9,381,586 

 — 

 537,513 

 144,688 

 (536,096) 

 (144,688) 

 84,248,384 

 84,246,967 

The authorized share capital of the Company amounting to € 13,600,000 consists of 170,000,000 ordinary 

shares and 170,000,000 preference shares with a par value of € 0.04 per share. At December 31, 2023, 

84,248,384 ordinary shares were issued. 81,354,592 ordinary shares were fully paid, and 2,893,792 ordinary 

shares were held by the Company as treasury shares (2022: 3,429,888). 

In April 2021, the Company consummated an underwritten public offering of 15,923,077 ordinary shares at 

an issue price of $ 6.50 per share. The gross proceeds from this offering amounted to € 88,115,000 while the 

transaction costs amounted to € 5,499,000, resulting in net proceeds of € 82,616,000. 

In September 2021, the Company issued 3,989,976 shares to Eli Lilly and Company (“Lilly”) pursuant to the 

licensing and research collaboration between the Company and Lilly, resulting in gross proceeds of € 

25,270,000, with no significant transaction costs. This amount excludes a premium paid by Lilly that is 

considered to be part of the transaction price of the Collaboration agreement (refer to Note 17). 

In November, 2021, the Company filed a shelf registration statement, which permitted: (a) the offering, 

issuance and sale by the Company of up to a maximum aggregate offering price of $ 300,000,000 of its 

ordinary shares, warrants and/or units; and (b) as part of the $ 300,000,000, the offering, issuance and sale by 

us of up to a maximum aggregate offering price of $ 75,000,000 of its ordinary shares that may be issued and 

sold under a sales agreement with Cantor Fitzgerald & Co in one or more at-the-market offerings. In 2021 and 

2022, no shares were issued pursuant to this ATM facility. 

In December 2022, the Company issued 9,381,586 shares to Lilly pursuant to the amended and restated 

licensing and research collaboration between the Company and Lilly, resulting in gross proceeds of € 

14,122,000, with no significant transaction costs. 

(b) Equity settled employee benefit reserve  
The costs of share options and RSUs for employees, members of the Supervisory Board and members of the 

Management Board are recognized in the income statement, together with a corresponding increase in 

equity during the vesting period, taking into account (deferral of) corporate income taxes. The accumulated 

expense of share-based compensation recognized in the income statement is shown separately in the equity 

category ‘equity settled employee benefit reserve’ in the ‘statement of changes in equity’. On September 25, 

2017, we established a Dutch foundation named Stichting Bewaarneming Aandelen ProQR for holding shares 

in trust for employees, members of the Management Board and members of the Supervisory Board of the 

Company and its group companies who from time to time could exercise options under the Company’s equity 

incentive plans. 

 
 
 
 
 
 
 
 
 
 
 
PAGE 66 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

(c) Translation reserve 
The translation reserve comprises all foreign currency differences arising from the translation of the financial 

statements of foreign operations.  

(d) Share options and restricted stock units 
The Company operates an equity-settled share-based compensation plan which was introduced in 2013. 

Options and RSUs may be granted to employees, members of the Supervisory Board, members of the 

Management Board and consultants. The compensation expenses included in operating costs for this plan 

were € 3,106,000 in 2023 (2022: € 2,869,000), of which € 2,629,000 (2022: € 1,982,000) was recorded in 

general and administrative costs and € 477,000 (2022: € 887,000) was recorded in research and development 

costs based on employee allocation. 

Options granted under this stock option plan are exercisable once vested. Any vesting schedule may be 

attached to the granted options and RSUs. Typical vesting periods are: 

• 

• 

Four years, with 25% vesting after every year. 

Four years, in thirteen tranches where the first tranche vests at the first anniversary of the grant date, 

and the remaining options vest in twelve equal tranches of 6.25% each subsequent quarter until the 

fourth anniversary of the grant date. 

• 

Two years, with 25% vesting after every six months.  

The options expire ten years after date of grant. Options granted under the stock option plan are granted at 

exercise prices which equal either the face value or the fair value of the ordinary shares of the Company at 

the date of the grant. The fair value of the options is estimated at the date of grant using the Black-Scholes 

option-pricing model, with on average the following assumptions:  

dsssds  

Risk-free interest rate 

Expected dividend yield 

Expected volatility 

Expected life in years 

Options  
granted in 2023 

Options  
granted in 2022 

 3.960% 

 0% 

 105.6% 

 5 years 

 2.570% 

 0% 

 101.0% 

 5 years 

The resulting weighted average grant date fair value of the options amounted to € 2.14 in 2023 (2022: € 0.67). 

The stock options granted have a 10-year life following the grant date and are assumed to be exercised five 

years from date of grant for all awards. 

The fair value of RSUs is determined at the grant date by using the Company’s share price at the grant date. 

The resulting weighted average grant date fair value of the RSUs amounted to € 2.76 in 2023 (2022: € 1.06).  

Movements in the number of options outstanding and their related weighted average exercise prices are as 

follows:  

 
 
 
 
 
 
 
 
 
 
 
 
PAGE 67 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

dsssds  

2023 

2022 

Balance at January 1 

Granted 

Forfeited 

Exercised 

Expired 

Balance at December 31 

Number of 
 options 

Average  
exercise price 

Number of 
 options 

Average  
exercise price 

 11,279,210 

 1,793,449 

 (276,272) 

 (337,746) 

 (1,272,401) 

 11,186,240 

€ 3.66 

€ 2.76 

€ 4.62 

€ 1.07 

€ 7.80 

€ 3.10 

 7,643,143 

 5,230,405 

 (1,177,622) 

 (1,590) 

 (415,126) 

 11,279,210 

€ 6.13 

€ 0.89 

€ 5.84 

€ 2.72 

€ 7.94 

€ 3.66 

Exercisable at December 31 

6,679,018 

   5,235,914 

The options outstanding at December 31, 2023 had an exercise price in the range of € 0.60 to € 19.80 (2022: 

€ 0.62 to € 20.51) and a weighted-average contractual life of 6.8 years (2022: 7.0 years). The weighted-average 

share price at the date of exercise for share options exercised in 2023 was € 1.45 (2022: € 5.26). 

Movements in the number of RSUs outstanding are as follows: 

dsssds  

Balance at January 1 

Granted 

Forfeited 

Released 

Balance at December 31 

Number of 
RSUs in 2023 

Number of 
RSUs in 2022 

 370,962 

 52,319 

 (66,881) 

 (190,094) 

 166,306 

 536,118 

 353,116 

 (371,102) 

 (147,170) 

 370,962 

Please refer to note 27 for the share-based compensation granted to key management personnel. 

14. Borrowings  

dsssds  

Innovation credit 

Accrued interest on innovation credit 

Convertible loans 

Accrued interest on convertible loans 

Total borrowings 

Current portion 

Non-current borrowings 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

 2,899 

 1,393 

 — 

 — 

 4,292 

 — 

 4,292 

 3,907 

 1,035 

 1,369 

 460 

 6,771 

 (2,500) 

 4,271 

Innovation credit (“Innovatiekrediet”)  

On December 10, 2018 ProQR was awarded an Innovation credit for the sepofarsen program. Amounts were 

drawn under this facility from 2018 through 2022. The credit of € 3,907,000 was used to conduct the Phase 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 68 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

2/3 clinical study and efforts to obtain regulatory and ethical market approval (New Drug Applications 

(“NDA”)/ Marketing Authorization Applications (“MAA”)) of sepofarsen for LCA10. In the fourth quarter of 2023, 

ProQR made a partial repayment of the principal, amounting to € 1,008,000. The remaining amount payable 

of € 2,899,000 is recognized under non-current borrowings at December 31, 2023.  

In December 2023, ProQR received a conditional waiver of the € 4,292,000 remaining balance of the 

Innovation credit including accrued interest. Consequently, the repayment of the total loan of € 4,292,000, 

including interest, will be waived if conditions are met, which will be reviewed annually.  

The amounts receivable relating to development & regulatory milestone payments under the Amended and 

Restated Asset Purchase Agreement with Laboratoires Théa S.A.S. (“Théa”) are subject to a right of pledge for 

the benefit of the Rijksdienst voor Ondernemend Nederland (“RVO”). 

Convertible loans: Pontifax and Kreos 

In July 2020, the Company entered into a convertible debt financing agreement with Pontifax Medison Debt 

Financing. Under the agreement, the Company had access to up to $ 30 million in convertible debt financing 

in three tranches of $ 10 million each that would mature over a 54-month period and had an interest-only 

period of 24 months. One tranche of $ 10 million (€ 8.4 million) was drawn down over the course of the 

agreement.  

A second close of the convertible debt financing agreement was completed in August 2020 with Kreos Capital. 

Under the second agreement, the Company had access to up to € 15 million in convertible debt financing in 

three tranches of € 5 million each that would mature over a 54-month period and had an interest-only period 

of 24 months. One tranche of € 5 million was drawn down over the course of the agreement.  

In connection with the loan agreement, the Company issued to Pontifax and Kreos warrants to purchase up 

to an aggregate of 302,676 shares of its common stock at a fixed exercise price.   

On December 29, 2021, the Company amended its convertible debt financing agreement with the Lenders. 

Under the amended agreement the Company drew down an additional $ 30 million (€ 26.5 million) that 

would mature over a 54-month period and had an interest-only period of 33 months. The amendment 

replaced the two undrawn tranches under the original convertible debt financing agreements.  

In connection with the amended loan agreement, the Company issued to the Lenders warrants to purchase 

up to an aggregate of 376,952 shares of its common stock at a fixed exercise price. 

The convertible loans from Pontifax and Kreos bore an interest of 8.2% per annum.  

In September 2022, ProQR extinguished its debt with Pontifax and Kreos by repaying all outstanding principal 

amounts. In addition, an early repayment penalty was incurred. The financial liability relating to Pontifax’ 

conversion options was derecognized from derivative financial instruments. The option premium on 

convertible loans relating to Kreos’ conversion options was derecognized from equity. The results related to 

the derecognition of these financial liabilities are disclosed in the table further below in this note.  

Pontifax’ and Kreos’ warrants remain in place until their five-year economic life expires. These warrants are 

accounted for as embedded derivatives and were recognized separately from the host contract as derivative 

financial liabilities at fair value through profit or loss. 

 
 
 
PAGE 69 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Convertible loans: Amylon 

Convertible loans amounting to € 2.3 million were issued to Amylon Therapeutics B.V. in 2018 and 2019 and 

were interest-bearing at an average rate of 8% per annum. In 2022 and 2023, Amylon entered into waiver 

agreements with its lenders. Such lenders’ loan agreements with Amylon are severed and any claims to 

repayment of any outstanding debt and accumulated interest are renounced. The total amount of convertible 

loans and accumulated interest waived under these agreements in 2023 is € 1,866,000 (2022: € 1,144,000). 

The resulting gains are recognized as a gain on derecognition of financial liabilities. 

In the third quarter of 2023, Amylon was legally dissolved. The effect of the resulting derecognition of 

Amylon’s remaining assets and liabilities is included in profit and loss as ‘result on derecognition of 

subsidiary’. 

The results related to the derecognition of financial liabilities, as described above, are as follows: 

dsssds  

Gain on waiver of Amylon convertible loans 

Loss on extinguishment of Pontifax and Kreos convertible loans 

2023 

€ 1,000 

 1,866 

 - 

 1,866 

2022 

€ 1,000 

 1,144 

 (2,534) 

 (1,390) 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 70 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Reconciliation of movements of liabilities to cash flows arising from financing activities: 

dsssds  

Balance at January 1, 2022 

Changes from financing cash flows 

    Repayment of convertible loans 

    Repayment of lease liability 

The effect of changes in foreign exchange rates 

Other changes 

    Interest expense 

    Interest paid 

    Transaction costs 

    Repayments allocated to option premium on convertible loans 
(equity) 

    Repayments recognized as result on derecognition of financial 
liabilities  

    Effect of waived loan agreements 

    Effect of lease amendments 

Balance at January 1, 2023 

Changes from financing cash flows 

    Repayments 

The effect of changes in foreign exchange rates 

Other changes 

    Interest expense 

    Interest paid 

    Effect of waived loan agreements 

    Effect of lease amendments 

Innovation 
credit 

Convertible 
loans 

Lease 
liabilities 

€ 1,000 

 4,552 

€ 1,000 

39,538 

€ 1,000 

  16,282 

 — 

— 

 — 

 391 

 — 

 — 

 — 

 — 

 — 

 — 

 (43,372) 

 — 

— 

(1,674) 

 — 

 — 

 — 

 — 

 — 

 — 

 1,771 

 3,537 

 (2,612) 

 94 

 1,482 

 2,534 

 (1,144) 

 — 

 592 

 4,943 

 1,828 

 15,200 

 (1,008) 

 — 

 357 

 — 

 — 

 — 

 — 

 — 

 38 

 — 

 (1,621) 

 — 

 — 

 — 

 (1,866) 

 — 

 1,863 

Balance at December 31, 2023 

 4,292 

 — 

 15,442 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 71 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

15. Deferred Income 

The following table summarizes details of deferred income at December 31, 2023 and December 31, 2022. 

The nature of the deferred income relating to Eli Lilly is described in Note 17. 

dsssds  

Eli Lilly up-front payment and premium on equity consideration 

Total deferred income 

Current portion 

Total non-current deferred income 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

 64,739 

 64,739 

 (20,569) 

 44,170 

 71,209 

71,209 

 (5,641) 

 65,568 

The current portion of deferred income reflects the estimated value of the Company’s work under the Lilly 

collaboration that is expected to be performed within one year after the balance sheet date.  

The table below analyzes ProQR’s undiscounted deferred income into relevant maturity groupings based on 

the remaining period at year-end until the contractual maturity date: 

At December 31, 2022 

Deferred income 

Total 

At December 31, 2023 

Deferred income 

Total 

Less than  
1 year 

Between  
1 and 2 years 

Between  
2 and 5 years 

€ 1,000 

€ 1,000 

€ 1,000 

Over 
5 years 

€ 1,000 

 20,569 

 20,569 

 27,950 

 27,950 

 16,220 

 16,220 

 5,641 

 5,641 

 17,817 

 17,817 

 47,751 

 47,751 

 — 

  — 

 — 

  — 

16. Other Current Liabilities  

At December 31, 2023, other current liabilities amount to € 8,509,000 (December 31, 2022: € 8,687,000). At 

December 31, 2023 and December 31, 2022, other current liabilities consisted principally of accruals for 

services provided by vendors not yet billed, payroll related accruals and other miscellaneous liabilities. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
   
   
 
PAGE 72 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

17. Revenue  

The following table summarizes details of revenue recognized in the years ended December 31, 2023 and 

2022 by collaboration agreement and by category of revenue: upfront payments, other research and 

development service fees and equity consideration. 

dsssds  

Up-front payments 

Eli Lilly 

Yarrow 

Other R&D services 

Eli Lilly 

Yarrow 

Equity consideration 

Eli Lilly 

Yarrow 

2023 

€ 1,000 

2022 

€ 1,000 

 5,996 

 — 

 — 

 — 

 518 

 — 

 6,514 

 2,646 

 191 

 270 

 118 

 321 

 48 

 3,594 

The table below summarizes the changes in current and non-current deferred revenue for the years ended 

December 31, 2023 and 2022. 

dsssds  

Balance on January 1, 2022 

Received or receivable 

   Upfront payment 

   Other R&D services 

   Equity consideration 

Revenue recognition 

   Upfront payment 

   Other R&D services 

   Equity consideration 

Foreign currency translation effects 

Balance on December 31, 2022 

Received or receivable 

   Upfront payment 

   Equity consideration 

Revenue recognition 

   Upfront payment 

   Equity consideration 

Foreign currency translation effects 

Balance on December 31, 2023 

Eli Lilly 

€ 1,000 

 18,262 

 56,412 

 273 

 (451) 

 (2,646) 

 (270) 

 (321) 

 (50) 

 71,209 

 — 

 — 

 (5,996) 

 (518) 

 44 

 64,739 

Yarrow 

€ 1,000 

 73 

 — 

 256 

 — 

 (191) 

 (118) 

 (48) 

 28 

 — 

 — 

 — 

 — 

 — 

 — 

 — 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 73 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Eli Lilly collaboration 
In September 2021, the Company entered into a global licensing and research collaboration with Lilly focused 

on the discovery, development, and commercialization of potential new medicines for genetic disorders in 

the liver and nervous system. ProQR and Lilly will use ProQR’s proprietary Axiomer RNA editing platform to 

progress new drug targets toward clinical development and commercialization. 

Under the terms of the agreement, ProQR received an upfront payment and equity consideration, and is 

eligible to receive milestone payments and royalties on the net sales of any resulting products. In September 

2021, the Company issued 3,989,976 shares to Lilly, resulting in gross proceeds of $ 30,000,000 

(€ 25,270,000). These shares were issued at a premium of $ 2,429,000 (€ 2,047,000), which was determined to 

be part of the transaction price and as such was initially recognized as deferred revenue. An up-front 

payment of $ 20,000,000 (€ 16,849,000) was received in October 2021. 

With regard to its original collaboration with Lilly, the Company concluded as follows: 

• 

• 

There is one performance obligation under IFRS 15, which is the transfer of a license combined with the 

performance of research and development activities. The Company concluded that the license is not 

capable of being distinct and is not distinct in the context of the contract. 

The transaction price of this agreement currently only includes fixed components, consisting of an up-

front fee and an equity component. The agreement also contains variable components, but those are 

not yet included in the transaction price. Milestone payments will only be included 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 milestones is subsequently resolved. Sales-based 

milestones and sales-based royalties will be included as the underlying sales occur. 

• 

The Company recognizes revenue over time, using an input method that estimates the satisfaction of 

the performance obligation as the percentage of labor hours incurred compared to the total estimated 

labor hours required to complete the promised services. 

In December 2022, the Company and Lilly amended their research and collaboration agreement described 

above, which expanded the collaboration. Under the amended and restated research and collaboration 

agreement, Lilly will gain access to additional targets in the central nervous system and peripheral nervous 

system with ProQR’s Axiomer platform.  

As described under Note 13, pursuant to the amended and restated agreement, the Company issued 

9,381,586 shares to Lilly in December 2022, resulting in gross proceeds of $ 15,000,000 (€ 14,122,000). These 

shares were issued at a discount of $ 480,000 (€ 451,000), which is accounted for as a reduction of the 

transaction price. In February 2023, ProQR also received an upfront payment of $ 60,000,000 (€ 56,412,000). 

Lilly has the ability to exercise an option to further expand the partnership for a consideration of 

$ 50,000,000.  

With regard to the amended and restated research and collaboration agreement with Lilly, the Company 

concluded as follows: 

• 

• 

There is one performance obligation under IFRS 15, which is the transfer of a license combined with the 

performance of research and development activities. The Company concluded that the license is not 

capable of being distinct and is not distinct in the context of the contract. 

The transaction price of this agreement currently only includes fixed components, consisting of an up-

front fee and an equity component (discount). The agreement also contains variable components, but 

those are not yet included in the transaction price. Milestone payments will only be included to the 

extent that it is highly probable that a significant reversal in the amount of cumulative revenue 

 
 
 
 
PAGE 74 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

recognized will not occur when the uncertainty associated with the milestones is subsequently resolved. 

Sales-based milestones and sales-based royalties will be included as the underlying sales occur. 

• 

The Company recognizes revenue over time, using an input method that estimates the satisfaction of 

the performance obligation as the percentage of labor hours incurred compared to the total estimated 

labor hours required to complete the promised services. 

Yarrow Biotechnology collaboration 
In May 2021, the Company entered into an exclusive worldwide license and discovery collaboration for an 

undisclosed target with Yarrow. Under the terms of the agreement, ProQR received an upfront payment, 

equity consideration and reimbursement for ongoing R&D services. ProQR was also eligible to receive 

milestone payments and royalties on the net sales of any resulting products. In May 2021, ProQR received an 

up-front payment of € 419,000 and 8% of the shares of Yarrow’s common stock (see Note 8).  

With regard to its collaboration with Yarrow, the Company concluded as follows: 

• 

• 

There is one performance obligation under IFRS 15, which is the transfer of a license combined with the 

performance of research and development activities. The Company concluded that the license is not 

capable of being distinct and is not distinct in the context of the contract. 

The transaction price of this agreement currently includes both fixed and variable components. The 

fixed part consists of an up-front fee and an equity component. The variable part consists of a cost 

reimbursement for research and development activities. The agreement also contains other variable 

parts, but those are not yet included in the transaction price. Milestone payments will only be included 

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 milestones is subsequently resolved. 

Sales-based milestones and sales-based royalties will be included as the underlying sales occur. 

• 

The Company recognizes revenue over time, using an input method that estimates the satisfaction of 

the performance obligation as the percentage of labor hours incurred compared to the total estimated 

labor hours required to complete the promised services. 

The Yarrow collaboration was terminated in the third quarter of 2022.  

18. Other income  

dsssds  

Net gain on divestment of intellectual property 

Grant income 

Other income 

2023 

€ 1,000 

 2,931 

 75 

 5 

 3,011 

2022 

€ 1,000 

— 

 699 

 66 

 765 

In 2023, ProQR completed the divestment of its late-stage ophthalmic intellectual property assets, sepofarsen 

and ultevursen, to Théa. Under the terms of the agreement, ProQR received an initial payment of € 8,000,000. 

The Company incurred costs directly associated to the transaction amounting to € 5,069,000. The net gain on 

the divestment amounting to € 2,931,000 was recognized in other income. Costs directly associated to the 

transaction include the partial repayment of grant income received from Foundation Fighting Blindness 

(“FFB”) for the development of ultevursen (€ 1,117,000), financial advisory fees (€ 2,715,000), incentive 

payments (€ 913,000), assignment and success fees (€ 260,000), and other costs (€ 64,000). 

 
 
 
 
 
 
 
 
 
 
 
 
PAGE 75 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

On February 9, 2018, the Company entered into a partnership agreement with FFB, under which FFB agreed 

to provide funding of $ 7,500,000 for the preclinical and clinical development of ultevursen for Usher 

syndrome type 2A targeting mutations in exon 13. FFB grant income amounted to € nil in 2023 compared to 

€ 594,000 in 2022. Grant income in 2023 and 2022 further includes income from grants received from various 

institutions.  

19. Operating Costs  

Total operating costs include the following expenses by nature. 

dsssds  

Employee benefits 

External R&D costs 

Laboratory costs and other consumables 

Advisory and legal costs 

Insurance costs 

Depreciation 

Patent and license expenses 

Other 

20. Employee Benefits  

dsssds  

Wages and salaries 

Social security costs 

Pension costs – defined contribution plans 

Equity-settled share based payments 

2023 

€ 1,000 

 20,349 

 4,809 

 3,473 

 4,262 

 1,458 

 2,513 

 303 

 4,217 

2022 

€ 1,000 

 30,286 

 19,824 

 3,111 

 6,766 

 1,895 

 2,521 

 611 

 4,504 

 41,384 

 69,518 

2023 

€ 1,000 

 13,797 

 2,480 

 966 

 3,106 

 20,349 

2022 

€ 1,000 

 23,441 

 2,661 

 1,315 

 2,869 

 30,286 

Average number of employees for the period 

144 

163 

Employees per activity at December 31 (converted to FTE): 

dsssds  

Research and Development 

General and Administrative 

December 31, 
2023 

December 31, 
2022 

 122.4 

 34.2 

 103.5 

 26.7 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 76 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

 156.6 

 130.2 

Of all employees 153.6 FTE are employed in the Netherlands (2022: 112.4 FTE). 

Included in the wages and salaries for 2023 is a credit of € 1,170,000 (2022: € 792,000) with respect to WBSO 

subsidies.  

21. Financial Income and Financial Expense  

dsssds  

Interest income 

Current accounts and deposits 

Interest costs 

Current accounts and deposits 

Lease liability 

Loans and borrowings 

Foreign exchange result 

Net foreign exchange benefit/(loss) 

2023 

€ 1,000 

2022 

€ 1,000 

 2,593 

106 

 (31) 

 (774) 

 (398) 

 (406) 

 (793) 

 (3,928) 

 (255) 

4,757 

1,135 

(264) 

Financial income amounting to € 2,593,000 (2022: € 4,863,000) consists of interest income of € 2,593,000 

(2022: € 106,000) and a net foreign exchange benefit of € 4,757,000 for the year ended December 31, 2022. 

Financial expenses amounting to € 1,458,000 consist of interest costs of € 1,203,000 and net foreign 

exchange costs of € 255,000. Financial expenses amounted to € 5,127,000 in 2022, and wholly consisted of 

interest costs. 

22. Results related to financial liabilities measured at fair value through profit or 
loss 

Results related to financial liabilities measured at fair value through profit or loss represent changes in the 

fair value of derivative financial instruments since their initial recognition. These derivative financial 

instruments consist of conversion options and warrants issued in connection with our convertible loans, 

which are described in Note 14. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
 
   
 
  
 
 
 
 
 
23. Income Taxes  

The calculation of the tax charge is as follows:  

dsssds  

Consolidated result before corporate income taxes 

Exclude: results related to associates 

PAGE 77 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

2023 

€ 1,000 

(27,813) 

— 

2022 

€ 1,000 

 (64,108) 

 (8) 

(27,813) 

 (64,100) 

Income tax provision based on domestic rate (25.8%) 

 7,176 

 16,538 

Tax effect of: 

Different tax rates in foreign jurisdictions 

Non-taxable gains / (Non-deductible expenses)  

Current year losses for which no deferred tax asset was recognized 

Change in unrecognized deductible temporary differences 

True-up for prior year 

Income tax charge 

Effective tax rate 

 (8) 

 (289) 

(6,820) 

(67) 

86 

78 

0% 

 10 

 133 

(16,649) 

  (75) 

 (53) 

 (96) 

0% 

The Company recognizes deferred tax assets arising from unused tax losses, deductible temporary 

differences or tax credits only to the extent that the Company has sufficient taxable temporary differences or 

there is convincing evidence that sufficient taxable profit will be available against which the unused tax losses 

or unused tax credits can be utilized. Management’s judgment is that such convincing evidence is currently 

not sufficiently available and a deferred tax asset is therefore only recognized to the extent that the Company 

has sufficient taxable temporary differences. Consequently, the Company has not recognized a deferred tax 

asset related to operating losses.  

A deferred tax liability amounting to € 3,747,000 (2022: € 3,737,000) arises due to a taxable temporary 

difference associated with the Company’s right-of-use asset for the lease of its Leiden headquarters. A 

deferred tax asset amounting to € 3,984,000 (2022: € 3,922,000) arises due to a deductible temporary 

difference associated with the corresponding lease liability. As these deferred tax positions relate to income 

taxes levied by the same taxation authority (namely that of the Netherlands), and there is a legally 

enforceable right to offset current tax assets against current tax liabilities, and the Company intends to settle 

its current tax assets and liabilities on a net basis, the deferred tax asset associated with the lease liability is 

offset against the deferred tax liability associated with the right-of-use asset. The remaining balance of the 

deferred tax asset is not recognized, as it is Management’s judgment that there is no sufficient convincing 

evidence that sufficient taxable profit will be available against which the unused tax losses or unused tax 

credits can be utilized. 

As per December 31, 2023, the Company has a total amount of € 402.3 million (2022: € 376.9 million) tax loss 

carry-forwards available for offset against future taxable profits, which may be carried forward indefinitely. 

However, the offset of losses will be limited in a given year against the first € 1 million of taxable profit. For 

taxable profit in excess of this amount, losses may only be offset up to 50% of this excess. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 78 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

24. Earnings Per Share  

(a) Basic and diluted earnings per share  
Basic earnings per share are calculated by dividing the result attributable to equity holders of the Company 

by the weighted average number of shares outstanding during the year.  

dsssds  

Result attributable to owners of the Company (€ 1,000) 

Weighted average number of shares  outstanding 

Basic (and diluted) earnings per share (€ per share) 

2023 

2022 

 (28,119) 

 (64,424) 

81,011,438 

 71,641,305 

 (0.35) 

 (0.90) 

(b) Diluted earnings per share  
For the periods included in these financial statements, the share options are not included in the diluted 

earnings per share calculation as the Company was loss-making in all periods. Due to the anti-dilutive nature 

of the outstanding options, basic and diluted earnings per share are equal.  

(c) Dividends per share  
The Company did not declare dividends for any of the years presented in these financial statements.  

25. Leases  

The Company leases office and laboratory facilities of 4,818 square meters at Zernikedreef in Leiden, the 

Netherlands, where our headquarters and our laboratories are located. The current lease agreement for 

these facilities terminates on June 30, 2031. The lease agreement contains no significant dismantling 

requirements.  

The initial 10-year lease agreement for the Leiden office and laboratory facilities was accounted for as of 

commencement date July 1, 2020. This 10-year period was extended by 1 year to an 11-year period in 

December 2020. The lease contract may be extended for subsequent 5-year periods. As the Company is not 

reasonably certain to exercise these extension options, these are not included in the lease term. 

The initially recognized lease liability and the corresponding right-of-use asset for this lease contract, on July 

1, 2020, amounted to € 16,203,000 and € 16,332,000, respectively. A modification to reflect the additional 1 

year lease period resulted in an increase in the carrying amounts of the lease liability and the right-of-use 

asset in 2020 of € 1,260,000.  

Annually in June, the lease price is amended to reflect an indexation. In June 2023, the lease liability was 

remeasured, resulting in an increase in the carrying amounts of the lease liability and the right-of-use asset of 

€ 1,863,000 (2022: € 592,000).  

The following table summarizes the relevant disclosures in relation to our leases in 2023 and 2022: 

 
 
 
 
 
 
 
 
 
 
 
dsssds  

Depreciation charge for right-of-use asset 

Interest expense on lease liability 

Expense relating to short-term leases 

Total cash outflow for leases 

Additions to right-of-use assets during the period 

PAGE 79 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

2023 

€ 1,000 

 1,833 

 774 

 28 

 2,423 

 1,863 

2022 

€ 1,000 

 1,737 

 793 

 94 

 2,701 

 592 

The carrying amount of the right-of-use asset at the end of the reporting period is disclosed in Note 7 

Property, Plant & Equipment. 

A maturity analysis of our lease liability is included in Note 5 Financial Risk Management under (c) Liquidity 

risk. The total undiscounted commitment for lease agreements to which the Company had committed at 

December 31, 2023 amounts to € 18,511,000 (2022: € 18,646,000). This amount does not include potential 

commitments that may arise from contractual extension options, as the Company is not reasonably certain 

that any extension options will be exercised.  

26. Commitments and Contingencies  

(a) Claims  
There are no claims known to management related to the activities of the Company.  

(b) Patent license agreements  
On October 29, 2018, ProQR signed an agreement with Ionis Pharmaceuticals (“Ionis”) to license QR-1123 

(formerly “IONIS-RHO-2.5Rx”), an RNA medicine for autosomal dominant retinitis pigmentosa (“adRP”) caused 

by the P23H mutation in the rhodopsin (“RHO”) gene. Under the terms of the agreement, ProQR was granted 

an exclusive worldwide license to QR-1123 and relevant patents. In 2018, ProQR paid the first installment of 

an upfront payment in ordinary shares in the aggregate amount of $ 2,500,000 at $ 22.23 per share, which 

represents a 20% premium (based on the volume weighted average price of the previous 20 trading days) to 

its common stock, to Ionis upon signing the agreement. In 2019, ProQR paid the second installment of the 

upfront payment in ordinary shares in the aggregate amount of $ 3,501,000, at $ 9.43 per share. This license 

agreement was terminated effective January 2024. 

In April 2014, the Company entered into a Patent License Agreement with Radboud University Medical Center 

(“Radboud”) in the field of antisense oligonucleotide-based therapy for Leber congenital amaurosis (“LCA”). 

Under the terms of this license agreement, the Company has an exclusive, sublicensable, world-wide royalty-

bearing license under certain Radboud patent rights to develop, make, have made, use, sell, offer for sale and 

import certain licensed products of Radboud for use in all prophylactic and therapeutic uses in the field of 

LCA. This license is assigned in full per December 2023 as part of the divestment of the product sepofarsen. 

In June 2015, the Company entered into another license agreement with Radboud. Under the terms of this 

license agreement, the Company has an exclusive, sublicensable, world-wide royalty-bearing license under 

certain Radboud patent rights to develop, make, have made, use, sell, offer for sale and import certain 

licensed products of Radboud for use in all prophylactic and therapeutic uses in the field of Usher syndrome. 

This license was assigned in full per December 2023 as part of the divestment of the product ultevursen. 

In January 2018, the Company entered into a license agreement with Inserm Transfert SA and Assistance-

Publique-Hôpiteaux de Paris. Under the terms of the agreement, the Company has a world-wide, exclusive, 

 
 
 
 
 
 
 
 
 
PAGE 80 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

royalty-bearing license under patent rights belonging to Inserm Transfert SA and other co-owners to develop, 

have developed, make, have made, use, have used and sell, have sold or otherwise distribute certain licensed 

products related to antisense oligonucleotides for treating LCA and method of treatment claims relating to 

modulation of the splicing of the CEP290 gene product. This license agreement is assigned per December 

2023 in connection with the sale of the ophthalmology products, sepofarsen and ultevursen. In consideration 

for the assignment, the Company has agreed to accept certain royalty obligations upon sepofarsen reaching 

certain regulatory milestones and net sales of products sold. 

In January 2017, the Company entered into an agreement with the Leiden University Medical Center (“LUMC”), 

which gives us a world-wide, exclusive, royalty-bearing license in the field of Huntington’s disease, under 

certain patent rights of LUMC regarding antisense oligonucleotide based therapies. This license agreement 

contains certain diligence obligations for the Company coupled to milestone payments and complements the 

Company’s intellectual property relating to the HD program. This license was terminated per July 2023. 

In February 2019, the Company entered into an agreement with the University of Rochester, New York, which 

gives us a world-wide, exclusive, royalty-bearing, sublicensable license in the field of antisense 

oligonucleotides for use in nucleotide specific RNA editing through pseudouridylation, under certain patent 

rights of University of Rochester. This license agreement contains certain diligence obligations for the 

Company coupled to milestone payments and complements the Company’s intellectual property relating to 

the Axiomer/pseudouridylation program. 

In September 2020, the Company entered into an agreement with Vico Therapeutics B.V., which gives us a 

world-wide, exclusive, royalty-bearing, sublicensable license in the field of the prophylactic and therapeutic 

use of antisense oligonucleotide for the treatment of Fuch’s Endothelial Corneal Dystrophy caused by a 

trinucleotide repeat, under certain patent rights of Vico Therapeutics B.V. In partial consideration of the rights 

and licenses granted by the license agreement, the Company is required to make annual maintenance 

payments. Unless terminated earlier in accordance with the terms of the license agreement, the agreement 

will stay in effect until the expiration of all of the licensed patent rights. The license agreement may be 

terminated by either party in the event of an uncured breach by the breaching party. Vico Therapeutics B.V. 

may terminate the license agreement if the Company applies for an order or an order is made declaring the 

Company bankrupt or granting the Company suspension of payments, or a liquidator is appointed for the 

Company, or the Company is dissolved, liquidated, or ceases to carry on all or a substantial part of its 

business or a decision is taken to that effect, or in the event uncured payment defaults. The development of 

this candidate has been suspended per the strategic shift in focus as announced in August 2022. 

(c) Clinical support agreements 
On February 9, 2018, the Company entered into an agreement with FFB, under which FFB has provided 

funding of $ 6.8 million (€ 6.3 million) to advance ultevursen into the clinic.  

Pursuant to the terms of the agreement, we were obligated to make certain repayments to FFB subject to 

development milestones. In December 2023, upon the occurrence of the sale of ultevursen to Théa, these 

payables were settled by means of a lump-sum payment in the amount of € 1.1 million and a percentage of 

earn-out payments for milestones and sales to be received by us from Théa, ranging from 5-10%. 

(d) Research and development commitments  
The Company has research and development commitments, mainly with CRO’s, amounting to € 8,893,000 at 

December 31, 2023 (2022: € 8,030,000). Of these obligations an amount of € 7,162,000 is due in 2024, the 

remainder is due in 2 to 5 years. 

 
 
PAGE 81 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

27. Related-Party Transactions  

Details of transactions between the Company and related parties are disclosed below.  

(a) Compensation of the Supervisory Board  
The remuneration of the Supervisory Board members in 2023 is set out in the table below: 

dsssds  

2023 

Mr. Dinko Valerio 

Mr. Antoine Papiernik* 

Ms. Alison F. Lawton 

Mr. James Shannon 

Mr. Bart Filius 

Ms. Begoña Carreño** 

Ms. Theresa Heggie*** 

Short term 
employee 
benefits 

Post 
employment 
benefits 

Share-based 
payment 

Total 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

 74 

 — 

 50 

 56 

 49 

 50 

 30 

 309 

 — 

 — 

 — 

 — 

 — 

 — 

 — 

 — 

 76 

 — 

 76 

 76 

 78 

 34 

 241 

 581 

 150 

 — 

 126 

 132 

 127 

 84 

 271 

 890 

* Mr. Papiernik stepped down from the supervisory board on May 18, 2023.  

** Ms. Carreño was elected to the supervisory board on May 18, 2023. The remuneration set forth for Ms. 

Carreño in the table above covers the period from May 18, 2023 to December 31, 2023. 

*** Ms. Heggie was elected to the supervisory board on May 18, 2023. The remuneration set forth for Ms. 

Heggie in the table above covers the period from May 18, 2023 to December 31, 2023. Ms. Heggie’s share-

based payments include the effects of options and RSUs that were granted to her before her reappointment 

to the supervisory board on May 18, 2023. 

The remuneration of the Supervisory Board members in 2022 is set out in the table below: 

dsssds  

2022 

Mr. Dinko Valerio   

Mr. Antoine Papiernik 

Ms. Alison F. Lawton 

Mr. James Shannon 

Mr. Bart Filius 

Short term 
employee 
benefits 

Post 
employment 
benefits 

Share-based 
payment 

Total 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

 74 

 — 

 52 

 59 

 49 

 234 

— 

— 

— 

— 

— 

— 

 104 

 — 

 104 

 104 

 104 

 416 

 178 

 — 

 156 

 163 

 153 

 650 

In 2023 and 2022, Mr. Papiernik waived his compensation. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 82 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

As at December 31, 2023:  

•  Mr. Dinko Valerio holds 725,692 ordinary shares in the Company, as well as 192,964 options. These 

options either vest in four annual equal tranches of 25% starting for the first time as of the first 

anniversary of the date of grant, or in thirteen tranches where the first tranche vests at the first 

anniversary of the grant date, and the remaining options vest in twelve equal tranches of 6.25% each 

subsequent quarter until the fourth anniversary of the grant date. In 2023, Mr. Valerio was awarded 

22,608 options to acquire ordinary shares at an exercise price of $ 3.41 per option. In 2022, Mr. Valerio 

was granted 23,931 options to acquire ordinary shares at an exercise price of $ 8.01 per option.  

•  Mr. Antoine Papiernik does not hold any shares or options in the Company. As a managing partner of 

Sofinnova Partners SAS, the management company of Sofinnova Capital VII FCPR, holder of 2,764,194 

ordinary shares, Mr. Papiernik may be deemed to have share voting and investment power with respect 

to such shares. 

•  Ms. Alison F. Lawton holds 205,784 options. These options either vest in four annual equal tranches of 

25% starting for the first time as of the first anniversary of the date of grant, or in thirteen tranches 

where the first tranche vests at the first anniversary of the grant date, and the remaining options vest in 

twelve equal tranches of 6.25% each subsequent quarter until the fourth anniversary of the grant date. 

In 2023, Ms. Lawton was granted 22,608 options to acquire ordinary shares at an exercise price of $ 3.41 

per option. In 2022, Ms. Lawton was granted 23,931 options to acquire ordinary shares at an exercise 

price of $ 8.01 per option. 

•  Mr. James Shannon holds 61,538 ordinary shares in the Company and 202,044 options. These options 

either vest in four annual equal tranches of 25% starting for the first time as of the first anniversary of 

the date of grant, or in thirteen tranches where the first tranche vests at the first anniversary of the 

grant date, and the remaining options vest in twelve equal tranches of 6.25% each subsequent quarter 

until the fourth anniversary of the grant date. In 2023, Mr. Shannon was granted 22,608 options to 

acquire ordinary shares at an exercise price of $ 3.41 per option. In 2022, Mr. Shannon was granted 

23,931 options to acquire ordinary shares at an exercise price of $ 8.01 per option. 

•  Mr. Bart Filius holds 107,148 options. These options either vest in four annual equal tranches of 25% 

starting for the first time as of the first anniversary of the date of grant, or in thirteen tranches where 

the first tranche vests at the first anniversary of the grant date, and the remaining options vest in twelve 

equal tranches of 6.25% each subsequent quarter until the fourth anniversary of the grant date. In 2023, 

Mr. Filius was granted 22,608 options to acquire ordinary shares at an exercise price of $ 3.41 per 

option. In 2022, Mr. Filius was granted 23,931 options to acquire ordinary shares at an exercise price of 

$ 8.01 per option. 

•  Ms. Begoña Carreño holds 26,468 options. These options vest in thirteen tranches where the first 

tranche vests at the first anniversary of the grant date, and the remaining options vest in twelve equal 

tranches of 6.25% each subsequent quarter until the fourth anniversary of the grant date. In 2023, Ms. 

Carreño was granted 22,903 options to acquire ordinary shares at an exercise price of $ 3.41 per option. 

In 2022, Ms. Carreño was granted 3,565 options to acquire ordinary shares at an exercise price of $ 0.95 

per option. 

•  Ms. Theresa Heggie holds 26,499 ordinary shares in the Company and 334,756 options. These options 

either vest in four annual equal tranches of 25% starting for the first time as of the first anniversary of 

the date of grant, or in thirteen tranches where the first tranche vests at the first anniversary of the 

grant date, and the remaining options vest in twelve equal tranches of 6.25% each subsequent quarter 

until the fourth anniversary of the grant date. In 2023, Ms. Heggie was granted 14,418 options to 

acquire ordinary shares at an exercise price of $ 1.74 per option. In 2022, Ms. Heggie was granted 

159,150 options to acquire ordinary shares at an average exercise price of $ 0.84 per option.  

 
 
PAGE 83 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

(b) Compensation of key management  
Our management board is supported by our officers, or senior management. Mr. Daniel de Boer and Mr. 

Rene Beukema are the statutory directors of the Company. The total remuneration of the management 

board and senior management in 2023 amounted to € 5,508,000 with the details set out in the table below.  

dsssds  

2023 

Mr. D.A. de Boer1 

Mr. R.K. Beukema1 

Management Board 

Senior Management 

Short term 
employee 
benefits 

Post 
employment 
benefits 

Share-based 
payment 

Total 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

 1,167 

 892 

 2,059 

 1,145 

 3,204 

 27 

 23 

 50 

 52 

 102 

 1,245 

 395 

 1,640 

 562 

 2,202 

 2,439 

 1,310 

 3,749 

 1,759 

 5,508 

Short term employee benefits include bonuses for Mr. Daniel de Boer of € 643,000 and for Mr. Rene Beukema of 

1  
€ 481,000 based on goals realized in 2023. 

The total remuneration of the management board and senior management in 2022 amounted to € 7,536,000  

with the details set out in the table below:  

dsssds  

2022 

Mr. D.A. de Boer1 

Mr. R.K. Beukema1 

Management Board 

Senior Management 

Short term 
employee 
benefits 

Post 
employment 
benefits 

Share-based 
payment 

Total 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

 1,295 

 284 

 1,579 

 3,980 

 5,559 

 24 

 10 

 34 

 123 

 157 

 1,145 

 169 

 1,314 

 506 

 1,820 

 2,464 

 463 

 2,927 

 4,609 

 7,536 

1  
Short term employee benefits include a bonus for Mr. Daniel de Boer of € 791,000 and for Mr. Rene Beukema of 
€ 84,000 based on goals realized in 2022. The remuneration set forth for Mr. Beukema in the table above covers the period 
from July 1, 2022 to December 31, 2022. 

As at December 31, 2023:  

•  Mr. Daniel de Boer holds 705,309 ordinary shares in the Company as well as 4,011,888 options. These 

options either vest in four annual equal tranches of 25% starting for the first time as of the first 

anniversary of the date of grant, or in thirteen tranches where the first tranche vests at the first 

anniversary of the grant date, and the remaining options vest in twelve equal tranches of 6.25% each 

subsequent quarter until the fourth anniversary of the grant date. In 2023, Mr. de Boer was awarded 

442,182 options at an exercise price of $ 3.41 per option.  In 2022, Mr. de Boer was awarded 1,650,051 

options to acquire ordinary shares at an average exercise price of $ 0.76 per option. These options had 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 84 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

a remaining weighted-average contractual life of 6.7 years as at December 31, 2023. At December 31, 

2023, Mr. de Boer had not exercised any of the options that were awarded to him. 

•  Mr. Rene Beukema holds 460,000 ordinary shares in the Company as well as 1,363,318 options. These 

options either vest in four annual equal tranches of 25% starting for the first time as of the first 

anniversary of the date of grant, or in thirteen tranches where the first tranche vests at the first 

anniversary of the grant date, and the remaining options vest in twelve equal tranches of 6.25% each 

subsequent quarter until the fourth anniversary of the grant date. In 2023, Mr. Beukema was awarded 

132,123 options to acquire ordinary shares at an exercise price of $ 3.41 per option. In 2022, Mr. 

Beukema was awarded 1,000,000 options to acquire ordinary shares at an exercise price of $ 0.66 per 

option. These options had a remaining weighted-average contractual life of 7.6 years as at December 

31, 2023. In 2023 and 2022, Mr. Beukema did not exercise any of the options that were awarded to him. 

ProQR does not grant any loans, advance payments and guarantees to members of the Management and 

Supervisory Board. 

(c) Transactions with Yarrow Biotechnology, Inc.  
As described in Note 8. Investments in Associates, the Company, as of October 2023, no longer has significant 

influence over Yarrow Biotechnology, Inc. Yarrow is therefore, no longer considered a related party as of that 

point onwards. The Company did not have any transactions with Yarrow in the year ended December 31, 

2023. Transactions with Yarrow for the year ended December 31, 2022 are described in Note 17. Revenue.  

28. Subsequent events  

No significant events occurred after the balance sheet date. 

 
 
 
Company balance sheet at December 31, 2023 

PAGE 85 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

(Before appropriation of result) 

dsssds  

ASSETS 

Non-current assets 

Participating interests 

Receivables from group companies 

Other investments in financial assets 

Current assets 

Other taxes 

Prepayments and other receivables 

Cash and cash equivalents 

TOTAL ASSETS 

EQUITY 

Shareholders' equity 

Share capital 

Share premium reserve 

Equity settled employee benefits reserve 

Translation reserve 

Accumulated deficit 

Unappropriated result 

LIABILITIES 

Provisions 

Current liabilities 

Derivative financial instruments at fair value through profit or loss 

Payables to group companies 

Trade payables 

Social securities and other taxes 

Other current liabilities 

TOTAL LIABILITIES 

TOTAL EQUITY AND LIABILITIES 

Note 

December 31, 
2023 

December 31, 
2022 (revised) 

€ 1,000 

€ 1,000 

31 

32 

33 

34 

35 

36 

37 

38 

-- 

52,617 

-- 

52,617 

523 

308 

112,580 

113,411 

-- 

39,020 

621 

39,641 

606 

631 

86,139 

87,376 

166,028 

127,017 

3,370 

412,894 

25,159 

817 

3,370 

412,540 

29,052 

1,212 

(371,192) 

(312,272)* 

(29,658) 

41,390 

(65,298)* 

68,604 

50,648 

41,881* 

311 

72,251 

22 

336 

1,070 

73,990 

1,263 

14,484 

12 

47 

726 

16,532 

124,638 

166,028 

58,413 

127,017 

The accompanying notes are an integral part of these financial statements. 

* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 86 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Company income statement for the year ended December 31, 2023 

dsssds  

Note 

2023 

2022 (revised) 

€ 1,000 

€ 1,000 

Share in results of participating interests, after taxation 

31 

Other result after taxation 

Net result for the year 

(26,418) 

(3,240) 

(59,572)* 

(5,726) 

(29,658) 

(65,298) 

The accompanying notes are an integral part of these financial statements. 

* Includes a retrospective adjustment as explained in Note 1 on pages 42 and 43. 

 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
PAGE 87 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Notes to the Company financial statements for the year ended December 31, 
2023 

29. General 

The company financial statements are part of the 2023 financial statements of ProQR Therapeutics N.V. (the 

‘Company’) and have been prepared in accordance with the legal requirements of Part 9, Book 2 of the 

Netherlands Civil Code. 

With reference to the income statement of the company, use has been made of the exemption pursuant to 

Section 402 of Book 2 of the Netherlands Civil Code. 

For information on risk exposure and risk management, see Note 5 to the consolidated financial statements. 

30. Principles for the measurement of assets and liabilities and the determination 
of the result 

For setting the principles for the recognition and measurement of assets and liabilities and determination of 

the result for its company financial statements, the Company makes use of the option provided in section 

2:362(8) of the Netherlands Civil Code. This means that the principles for the recognition and measurement 

of assets and liabilities and determination of the result (hereinafter referred to as principles for recognition 

and measurement) of the company financial statements of the Company are the same as those applied for 

the consolidated IFRS financial statements. See page 45 for a description of these principles. 

Participating interests in group companies 
Participating interests in group companies are valued using the equity method, applying the IFRS accounting 

policies endorsed by the European Union. Following the adoption of IFRS 9 by the Company, and our 

interpretation of the Dutch Accounting Standard 100.107A, the Company shall, upon identification of a credit 

loss on an intercompany loan and/or receivable, eliminate the carrying amount of the intercompany loan 

and/or receivable for the value of the identified credit loss.  

Result of participating interests 
The share in the result of participating interests consists of the share of the Company in the result of these 

participating interests. Insofar as gains or losses on transactions involving the transfer of assets and liabilities 

between the Company and its participating interests or between participating interests themselves can be 

considered unrealized, they have not been recognised. 

Provisions 
Participating interests with a negative net asset value are valued at nil. This measurement also covers any 

receivables provided to the participating interests that are, in substance, an extension of the net investment. 

In particular, this relates to loans for which settlement is neither planned nor likely to occur in the 

foreseeable future. A share in the profits of the participating interest in subsequent years will only be 

recognised if and to the extent that the cumulative unrecognised share of loss has been absorbed. If the 

Company fully or partially guarantees the debts of the relevant participating interest, or if has the 

constructive obligation to enable the participating interest to pay its debts (for its share therein), then a 

provision is recognised accordingly to the amount of the estimated payments by the Company on behalf of 

the participating interest. 

 
 
 
PAGE 88 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Corporate income taxes 
ProQR Therapeutics N.V. is the head of the Dutch fiscal unity for corporate income taxes. The Company 

recognizes the portion of corporate income tax that it would owe as an independent taxpayer, taking into 

account the allocation of the advantages of the fiscal unity. 

31. Participating interests 

dsssds  

Participating interests  

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

-- 

-- 

-- 

-- 

At December 31, 2023, the Company, having its statutory seat in Leiden, the Netherlands, is the ultimate 

parent company of the following consolidated participating interests: 

Name 

ProQR Therapeutics Holding B.V. 

ProQR Therapeutics I B.V. 

ProQR Therapeutics II B.V. 

ProQR Therapeutics III B.V. 

ProQR Therapeutics IV B.V. 

ProQR Therapeutics V B.V. 

ProQR Therapeutics VI B.V. 

ProQR Therapeutics VII B.V. 

ProQR Therapeutics VIII B.V. 

ProQR Therapeutics IX B.V. 

ProQR Therapeutics I Inc. 

Location 

Share in issued capital 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Leiden, the Netherlands 

Delaware, United States 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

100% 

ProQR Therapeutics Holding B.V. is an intermediate holding company and the only subsidiary owned directly 

by ProQR Therapeutics N.V. 

ProQR Therapeutics N.V. is also statutory director of Stichting Bewaarneming Aandelen ProQR (“ESOP 

Foundation”). For details on accounts receivable from group companies and other receivables, reference is 

made to notes 32 and 34. 

32. Receivables from group companies 

dsssds  

Non-current receivables from group companies 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

52,617 

52,617 

39,020 

39,020 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
33. Other Taxes 

dsssds  

Value added tax 

All receivables are considered short-term and due within one year.  

34. Prepayments and Other Receivables  

dsssds  

Prepayments 

Other receivables 

All receivables are considered short-term and due within one year.  

35. Cash and Cash Equivalents  

dsssds  

Cash at banks 

Deposits 

PAGE 89 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

523 

523 

606 

606 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

63 

245 

308 

577 

54 

631 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

53,430 

59,150 

112,580 

86,139 

-- 

86,139 

The cash at banks is at full disposal of the Company. Deposits are fixed for at most 3 month periods at a time. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
PAGE 90 / 101 

Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

36. Shareholders’ equity 

Share 
Capital 

Share 
Premium 

Equity 
Settled 
Employee 
Benefit 
Reserve 

Option 
premium 
on 
convertible 
loan 

Trans-
lation 
Reserve 

Accumu-
lated 
Deficit 

Unappro
-priated 
result 

Total 
Equity 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

€ 1,000 

2,995 

398,309 

28,443 

1,426 

430 

(253,739) 

(60,737) 

117,127 

Balance at  
January 1, 2022 

Retained result 

Foreign exchange 
differences 

Recognition of share-
based payments 

Issue of ordinary 
shares 

Equity component 
convertible loan 

Share options lapsed 

Share options 
exercised 

Result for the year 

Balance at 
December 31, 2022 

Retained result 

Other comprehensive 
loss 

Recognition of share-
based payments 

Share options lapsed 

Share options 
exercised 

Result for the year 

-- 

-- 

-- 

-- 

-- 

-- 

375 

14,197 

-- 

-- 

-- 

-- 

-- 

-- 

34 

-- 

-- 

-- 

2,869 

-- 

-- 

(1,817) 

(443) 

-- 

3,370 

412,540 

29,052 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

 3,106  

 (6,280) 

 354  

 (719) 

-- 

-- 

Balance at 
December 31, 2023 

3,370 

412,894 

25,159 

-- 

-- 

-- 

-- 

(1,426) 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

(60,737) 

60,737 

-- 

782 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

-- 

(56) 

1,817 

443 

-- 

-- 

-- 

-- 

-- 

-- 

782 

2,869 

14,572 

(1,482) 

-- 

34 

-- 

(65,298) 

(65,298) 

1,212 

(312,272) 

(65,298) 

68,604 

-- 

 (65,298) 

 65,298  

 --    

 (395) 

 (621) 

-- 

 (1,016) 

-- 

-- 

-- 

-- 

-- 

 6,280  

 --    

 --    

 3,106  

 --    

 719  

 --    

 354  

-- 

 (29,658) 

 (29,658) 

817 

(371,192) 

(29,658) 

41,390 

The 2022 result was added to the accumulated deficit in accordance with the resolution of the Annual 

General Meeting of shareholders. At the upcoming Annual General Meeting of shareholders, it will be 

proposed to add the 2023 result to the accumulated deficit. For more details we refer to Note 13 to the 

consolidated financial statements. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
 
 
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Financial Statements 2023 

PROQR THERAPEUTICS ANNUAL REPORT 2023 

Reconciliation of shareholders’ equity and net result per the consolidated financial 
statements with shareholders’ equity and net result per the company financial 
statements 

dsssds  

Shareholders’ equity according to the consolidated balance sheet 

Share in results of participating interests with negative equity for which no 
provision is recognized 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

41,390 

-- 

66,681 

1,923 

Shareholders’ equity according to the company balance sheet 

41,390 

68,604 

dsssds  

Net result according to the consolidated profit and loss account 

Effect of results of participating interests with negative equity for which no 
provision is recognized 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

(27,735) 

(1,923) 

(64,204) 

(1,094) 

Net result according to the company profit and loss account 

(29,658) 

(65,298) 

37. Provisions 

dsssds  

Provision for negative equity group company 

Balance at January 1 

Provisions made during the year 

Balance at December 31 

2023 

€ 1,000 

41,881 

8,767 

50,648 

2022 

€ 1,000 

35,569 

6,312 

41,881 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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38. Payables to group companies 

dsssds  

Payables to group companies 

39. Employee benefits 

December 31, 
2023 

December 31, 
2022 

€ 1,000 

€ 1,000 

72,251 

72,251 

14,484 

14,484 

ProQR Therapeutics N.V. has two employees: Daniel de Boer and Rene Beukema. The disclosure of their 

remuneration is included in Note 27 to the consolidated financial statements.  

40. Commitments and Contingencies  

(a) Claims  
There are no claims known to management related to the activities of the Company.  

(b) Several liability and guarantees 
The Company has issued declarations of joint and several liabilities for debts arising from the actions of 

Dutch consolidated participating interests, as meant in article 2:403 of the Netherlands Civil Code. 

The Company constitutes a tax entity with its Dutch subsidiaries for corporate income tax purposes; the 

standard conditions prescribe that all companies of the tax entity are jointly and severally liable for the 

corporate income tax payable. 

41. Auditor fees 

The fees for services provided by our external auditor, KPMG Accountants N.V. for the years ended December 

31, 2023 and 2022 are specified below for each of the financial years indicated: 

dsssds  

Audit fees 

Audit-related fees 

Tax fees 

All other fees 

2023 

€ 1,000 

2022 

€ 1,000 

588 

-- 

-- 

-- 

588 

512 

32 

-- 

-- 

544 

Audit fees consist of aggregate fees for professional services provided in connection with the annual audit of 

our financial statements. Audit-related fees consist of procedures relating to share offerings, such as comfort 

letters, as well as consents and review of documents filed with the SEC. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Signing of the Annual Report 

Leiden, March 13, 2024, 

D.A. de Boer 

D. Valerio 

R.K. Beukema 

A.F. Lawton 

J.S.S. Shannon 

B. Filius 

T. Heggie  

B. Carreño 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Financial Statements 2023 

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Other information 

Independent auditor’s report  

Reference is made to the independent auditor’s report as included hereinafter. 

Statutory arrangement concerning the appropriation of the result 

In the Company’s articles of association the following has been presented concerning the appropriation of 

result: 

1. 

2. 

The profit is at the free disposal of the General Meeting of Shareholders. 

The Company may only distribute profits to shareholders and other recipients to distributable profits to 

the extent that the equity exceeds the paid up capital plus the reserves required by law. 

3.  Distribution of profits shall take place after adoption of the annual accounts from which it becomes 

clear that distribution is permissible. 

4.  When calculating the distribution of profits shares held by the Company shall be disregarded, unless 

this shares has been encumbered with usufruct or right of pledge or certificates thereof are issued as a 

result of which the entitlement to profits accrue to the usufructuary, pledgee or holder of the 

certificates. 

5. 

Certificates held by the Company or whereon the Company holds limited rights as a result of which the 

Company is entitled to distribution of profits shall also be disregarded when calculating the distribution 

of profits. 

6. 

The Company may make interim distributions, only if the requirements in paragraph 2 are met.  

 
 
 
 
 
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Financial Statements 2023 

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Independent auditor’s report 

To the General Meeting of Shareholders and the Supervisory Board of ProQR Therapeutics N.V. 

REPORT ON THE AUDIT OF THE FINANCIAL STATEMENTS 2023 INCLUDED IN THE ANNUAL 
REPORT 

Our opinion 

In our opinion: 

• 

the accompanying consolidated financial statements give a true and fair view of the financial position of 

ProQR Therapeutics N.V. as at December 31, 2023 and of its result and its cash flows for the year then 

ended, in accordance with IFRS Accounting Standards as endorsed by the European Union (“EU-IFRS”) 

and with Part 9 of Book 2 of the Dutch Civil Code. 

• 

the accompanying company financial statements give a true and fair view of the financial position of 

ProQR Therapeutics N.V. as at December 31, 2023 and of its result for the year then ended, in 

accordance with Part 9 of Book 2 of the Dutch Civil Code. 

What we have audited 

We have audited the financial statements 2023 of ProQR Therapeutics N.V. (the “Company”) based in Leiden, 

the Netherlands. The financial statements comprise the consolidated financial statements and the company 

financial statements. 

The consolidated financial statements comprise:  

1. 

2. 

3. 

  the consolidated statement of financial position as at December 31, 2023; 

the following consolidated statements for 2023: the statements of profit or loss and comprehensive 

income, changes in equity, and cash flows; and 

the notes comprising a summary of the significant accounting policies and other explanatory 

information.  

The company financial statements comprise: 

1. 

2. 

3. 

the company balance sheet as at December 31, 2023; 

the company income statement for the year ended December 31, 2023; and 

the notes comprising a summary of the accounting policies and other explanatory information. 

Basis for our opinion 

We conducted our audit in accordance with Dutch law, including the Dutch Standards on Auditing. Our 

responsibilities under those standards are further described in the ‘Our responsibilities for the audit of the 

financial statements’ section of our report. 

We are independent of ProQR Therapeutics N.V. in accordance with the ‘Wet toezicht 

accountantsorganisaties’ (“Wta, Audit firms supervision act”), the 'Verordening inzake de onafhankelijkheid 

van accountants bij assurance-opdrachten' (“ViO, Code of Ethics for Professional Accountants, a regulation 

with respect to independence”) and other relevant independence regulations in the Netherlands. 

Furthermore, we have complied with the 'Verordening gedrags- en beroepsregels accountants' (“VGBA, Dutch 

Code of Ethics”).  

We designed our audit procedures in the context of our audit of the financial statements as a whole and in 

forming our opinion thereon. The information in respect of going concern, fraud and non-compliance with 

laws and regulations and the key audit matter was addressed in this context, and we do not provide a 

separate opinion or conclusion on these matters. 

 
 
 
 
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We believe the audit evidence we have obtained is sufficient and appropriate to provide a basis for our 

opinion. 

Information in support of our opinion 

Summary 

Materiality  
•  Materiality of EUR 1.2 million 
• 

4% of result before corporate income taxes 

Group audit 
• 
• 

Audit coverage of 100% of result before corporate income taxes  
Audit coverage of 100% of total operating costs  

Risk of material misstatements related to Fraud, NOCLAR and Going Concern 
• 

Fraud & Non-compliance with laws and regulations (Noclar) related risks: presumed risk of fraud 
identified with respect to management override of controls 

• 

Going concern related risks: no significant going concern risks identified 

Key audit matters 
• 

Accounting for research and development costs  

Materiality 

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

at EUR 1.2 million (2022: EUR 2 million). The materiality is determined with reference to result before 

corporate income taxes (4%). We consider the result before corporate income taxes as the most appropriate 

benchmark because this best reflects the nature of the entity being in the pre-clinical phase, including both 

operating costs as well as revenue from collaboration agreements. We have also taken into account 

misstatements and/or possible misstatements that in our opinion are material for the users of the financial 

statements for qualitative reasons. 

We agreed with the Audit Committee of the Supervisory Board that misstatements identified during our audit 

in excess of EUR 55,000 would be reported to them, as well as smaller misstatements that in our view must 

be reported on qualitative grounds. 

Scope of the group audit 

ProQR Therapeutics N.V. is at the head of a group of components. The financial information of this group is 

included in the financial statements of ProQR Therapeutics N.V.  

The financial administration for all group entities is centralized in the Netherlands. Consequently, we have 

centralized our audit approach and we performed the audit procedures ourselves. By performing the 

procedures ourselves, we have been able to obtain sufficient and appropriate audit evidence about the 

group’s financial information to provide an opinion about the financial statements. 

Audit response to the risk of fraud and non-compliance with laws and regulations 

In chapter “Risks of fraud and non-compliance with laws and regulations” of the annual report, the 

Management Board describes its procedures in respect of the risk of fraud and non-compliance with laws 

and regulations.  

 
 
 
 
 
 
 
 
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As part of our audit, we have gained insights into the Company and its business environment and the 

Company’s risk management in relation to fraud and non-compliance. Our procedures included, among other 

things, assessing the Company’s code of conduct, whistleblowing procedures, incidents register and its 

procedures to investigate indications of possible fraud and non-compliance. Furthermore, we performed 

relevant inquiries with the Management Board, Audit Committee of the Supervisory Board and other relevant 

functions, such as Legal Counsel. We have also incorporated elements of unpredictability in our audit, 

including selecting items for control testing outside our customary selection parameters. 

As a result from our risk assessment, we identified the following laws and regulations as those most likely to 

have a material effect on the financial statements in case of non-compliance: 

• 

• 

• 

• 

FDA and EMA regulations 

Anti-corruption laws 

Intellectual property and information protection laws and regulations; and 

U.S. securities laws and regulations 

Further, we assessed the presumed fraud risk on revenue recognition as not significant, because the revenue 

transactions are related to collaboration agreements and are not resulting from commercialization of 

products. As such, the recurring entries related to amortization of deferred upfront payments are limited and 

non-complex.  

Based on the above and on the auditing standards, we identified the following fraud risk that is relevant to 

our audit, and responded as follows: 

Management override of controls (a presumed risk) 

Risk:  

•  Management is in a unique position to manipulate accounting records and prepare fraudulent financial 

statements by overriding controls that otherwise appear to be operating effectively.  

Responses:  

•  We evaluated the design and the implementation and, where considered appropriate, tested the 

operating effectiveness of internal controls that mitigate fraud risks, such as controls related to journal 

entries.  

•  We performed a data analysis of high-risk journal entries and evaluated key estimates and judgments 

for bias by the Company’s management. Where we identified instances of unexpected journal entries or 

other risks through our data analytics, we performed additional audit procedures to address each 

identified risk, including testing of transactions back to source information. 

•  We paid particular attention to unsupported journal entries manipulating the allocation of various costs 

between R&D and general and administrative expenses from the basis that the external users of the 

financial statements focus on its R&D. R&D costs consist principally of the costs associated with 

research and development activities, conducting pre-clinical studies and clinical trials and activities 

related to regulatory filings. 

Our evaluation of procedures performed related to fraud did not result in an additional key audit matter.  

We communicated our risk assessment, audit responses and results to the Management Board and the Audit 

Committee of the Supervisory Board.  

 
 
 
 
 
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Our audit procedures did not reveal indications and/or reasonable suspicion of fraud and non-compliance 

that are considered material to our audit. 

Audit response to going concern – no significant risk identified  

As explained in Note 2(d) of the financial statements, the Management Board has performed its going 

concern assessment and has not identified any going concern risks. To assess the Management Board’s 

assessment, we have performed, inter alia, the following procedures: 

• 

• 

• 

we considered whether the management board’s assessment of the going concern risks includes all 

relevant information of which we are aware as a result of our audit; 

we analyzed the company’s financial and liquidity position as at year-end and compared it to the 

previous financial year as well as expected research and development cash outflows in terms of 

indicators that could identify significant going concern risks; 

we compared the current financial year’s operating loss and the related cash outflows with the expected 

current financial year’s operating loss and cash outflows.  

The outcome of our risk assessment procedures did not give reason to perform additional audit procedures 

on management’s going concern assessment. 

Our key audit matters 

Key audit matters are those matters that, in our professional judgement, were of most significance in our 

audit of the financial statements. We have communicated the key audit matter to the Audit Committee of the 

Supervisory Board. The key audit matter is not a comprehensive reflection of all matters discussed. 

The key audit matter was 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 this matter. 

Accounting for research and development costs 

Description 

Research and development (“R&D”) expenses, amounting to EUR 25.1 million (2022: EUR 50.9 million), relate 

to the development of the RNA editing platforms that form the primary business of the Company. The 

treatment candidates are in the development phase and do not generate revenue from sales. The size of the 

transactions and to a lesser extent the complexity of the recognition and measurement resulted in significant 

audit effort. As such, we have considered the accounting for R&D expenses a key audit matter. 

Our response 

The following are the primary procedures we performed to address this key audit matter: 

•  We evaluated the design and implementation and tested the operating effectiveness of internal controls 

related to the Company’s R&D expense process, including controls over the monthly accrual process. 

Further, we performed test of details by validating R&D expenses to underlying support of the recorded 

expenses and related accruals.  

Among others, we have assessed the accounting for a selection of significant contracts of vendors and 

• 

• 

suppliers. 

Our observation 

Overall, the results of our procedures performed on management’s accounting and disclosure for R&D 

expenses in the financial statements are satisfactory. 

 
 
 
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PROQR THERAPEUTICS ANNUAL REPORT 2023 

REPORT ON THE OTHER INFORMATION INCLUDED IN THE ANNUAL REPORT 
In addition to the financial statements and our auditor’s report thereon, the annual report contains other 

information. 

Based on the following procedures performed, we conclude that the other information: 

• 

• 

is consistent with the financial statements and does not contain material misstatements; and 

contains all the information regarding the management report and other information as required by 

Part 9 of Book 2 of the Dutch Civil Code. 

We have read the other information. Based on our knowledge and understanding obtained through our audit 

of the financial statements or otherwise, we have considered whether the other information contains 

material misstatements.  

By performing these procedures, we comply with the requirements of Part 9 of Book 2 of the Dutch Civil Code 

and the Dutch Standard 720. The scope of the procedures performed is less than the scope of those 

performed in our audit of the financial statements.  

The Management Board is responsible for the preparation of the other information, including the 

information as required by Part 9 of Book 2 of the Dutch Civil Code. 

REPORT ON OTHER LEGAL AND REGULATORY REQUIREMENTS 

Engagement 

We were initially appointed by the General Meeting of Shareholders as auditor of ProQR Therapeutics N.V. on 

June 23, 2020, as of the audit for the year 2021 and have operated as statutory auditor ever since that 

financial year. 

DESCRIPTION OF RESPONSIBILITIES REGARDING THE FINANCIAL STATEMENTS 

Responsibilities of the Management Board and the Supervisory Board for the financial statements 

The Management Board is responsible for the preparation and fair presentation of the financial statements in 

accordance with EU-IFRS and Part 9 of Book 2 of the Dutch Civil Code. Furthermore, the Management Board 

is responsible for such internal control as the Management Board determines is necessary to enable the 

preparation of the financial statements that are free from material misstatement, whether due to fraud or 

error. In that respect the Management Board, under supervision of the Supervisory Board, is responsible for 

the prevention and detection of fraud and non-compliance with laws and regulations, including determining 

measures to resolve the consequences of it and to prevent recurrence. 

As part of the preparation of the financial statements, the Management Board is responsible for assessing 

the company’s ability to continue as a going concern. Based on the financial reporting frameworks 

mentioned, the Management Board should prepare the financial statements using the going concern basis of 

accounting unless the Management Board either intends to liquidate the Company or to cease operations, or 

has no realistic alternative but to do so. The Management Board should disclose events and circumstances 

that may cast significant doubt on the company’s ability to continue as a going concern in the financial 

statements. 

The Supervisory Board is responsible for overseeing the company’s financial reporting process. 

 
 
 
 
 
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PROQR THERAPEUTICS ANNUAL REPORT 2023 

Our responsibilities for the audit of the financial statements 

Our objective is to plan and perform the audit engagement in a manner that allows us to obtain sufficient 

and appropriate audit evidence for our opinion. 

Our audit has been performed with a high, but not absolute, level of assurance, which means we may not 

have detected all material errors and fraud during our audit. 

Misstatements can arise from fraud or errors 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 the 

financial statements. The materiality affects the nature, timing and extent of our audit procedures and the 

evaluation of the effect of identified misstatements on our opinion. 

A further description of our responsibilities for the audit of the financial statements is included in the 

appendix of this auditor’s report. This description forms part of our independent auditor's report. 

Amstelveen, March 13, 2024 

KPMG Accountants N.V. 

B.S. Geerling RA 

Appendix: Description of our responsibilities for the audit of the financial statements 

 
 
 
 
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PROQR THERAPEUTICS ANNUAL REPORT 2023 

APPENDIX 

Description of our responsibilities for the audit of the financial statements 

We have exercised professional judgement and have maintained professional scepticism throughout the 

audit, in accordance with Dutch Standards on Auditing, ethical requirements and independence 

requirements. Our audit included among others: 

• 

identifying and assessing the risks of material misstatement of the financial statements, whether due to 

errors or fraud, designing and performing audit procedures responsive to those risks, and obtaining 

audit evidence that is sufficient and appropriate to provide a basis for our opinion. The risk of not 

detecting a material misstatement resulting from fraud is higher than for one resulting from errors, as 

fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the override of 

internal control; 

• 

• 

• 

• 

• 

obtaining an understanding of internal control relevant to the audit in order to design audit procedures 

that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the 

effectiveness of the Company’s internal control; 

evaluating the appropriateness of accounting policies used and the reasonableness of accounting 

estimates and related disclosures made by the Management Board; 

concluding on the appropriateness of management's use of the going concern basis of accounting and 

based on the audit evidence obtained, whether a material uncertainty exists related to events or 

conditions that may cast significant doubt on the Company's ability to continue as a going concern. If we 

conclude that a material uncertainty exists, we are required to draw attention in our auditor's report to 

the related disclosures in the financial statements or, if such disclosures are inadequate, to modify our 

opinion. Our conclusions are based on the audit evidence obtained up to the date of our auditor's 

report. However, future events or conditions may cause the company to cease to continue as a going 

concern; 

evaluating the overall presentation, structure and content of the financial statements, including the 

disclosures; and 

evaluating whether the financial statements represent the underlying transactions and events in a 

manner that achieves fair presentation. 

We are solely responsible for the opinion and therefore responsible to obtain sufficient appropriate audit 

evidence regarding the financial information of the entities or business activities within the group to express 

an opinion on the financial statements. In this respect we are also responsible for directing, supervising and 

performing the group audit.  

We communicate with those charged with governance regarding, among other matters, the planned scope 

and timing of the audit and significant audit findings, including any significant findings in internal control that 

we identify during our audit.  

We provide the Audit Committee of the Supervisory Board with a statement that we have complied with 

relevant ethical requirements regarding independence, and to communicate with them all relationships and 

other matters that may reasonably be thought to bear on our independence, and where applicable, related 

safeguards. 

From the matters communicated with the Audit Committee of the Supervisory Board, we determine the key 

audit matters: those matters that were of most significance in the audit of the financial statements. We 

describe these matters in our auditor’s report unless law or regulation precludes public disclosure about the 

matter or when, in extremely rare circumstances, not communicating the matter is in the public interest.