Our Leadership Team

Jonny Mason was appointed Chief Executive Officer on 6 November 2025, following a period as Interim CEO since 4 August 2025. Jonny joined Convatec on 31 January 2022 and was appointed CFO from 12 March 2022 when he joined the Board of Directors. Jonny has played an instrumental role in leading the company’s pivot to sustainable and profitable growth and shaping its ongoing strategy.

An engineer and accountant by training, Jonny is a seasoned C-Suite leader with an extensive track record in listed and international businesses and brings diverse strategic enterprise transformation and operational leadership experience, combined with deep financial acumen and strong customer orientation.

A talented people-leader, he has made a significant contribution to Convatec’s turnaround and pivot to sustainable and profitable growth. He has a strong track record in publicly listed and international businesses, particularly those going through transformation, where he has built and led high performing teams, shaped engaging and impactful strategy, and delivered a stronger balance sheet with a sharp focus on cash and cost control.

Prior to joining Convatec, Jonny was Chief Financial Officer of Dixons Carphone Plc, now known as Currys Plc, between 2018-2021. Previous roles include CFO of Halfords Plc from 2015 and he was their interim Chief Executive Officer between September 2017 and January 2018. Jonny has built up a diverse and strong portfolio of experience, including being CFO of Scandi Standard AB, CFO at Odeon and UCI Cinemas and Finance Director of Sainsbury’s Supermarkets. His early career included finance roles with Shell and Hanson Plc.

Fiona Ryder was appointed Chief Financial Officer on 6 November 2025, following a period as Interim CFO since 4 August 2025. Fiona joined on 3 January 2022 as Group Financial Controller, and has played a fundamental role in delivering Convatec’s strategic focus on simplification and productivity, core to its FISBE strategy. Fiona has provided strong leadership for Convatec Tax, Treasury, Indirect Procurement, Finance Transformation and Data and Analytics strategy.

 
A senior finance leader with more than 25 years international and cross sector expertise, Fiona has worked in the US, Singapore and UK. After qualifying as an accountant with KPMG, she spent two decades at BP where she held roles including Chief of Staff to the Chief Financial Officer of their downstream business and spent a decade at the Castrol global lubricants business where she held a variety of commercial finance and performance roles, including as CFO of their Global Marine and Energy Business and CFO of Castrol Asia. Before joining Convatec, she was VP, Financial Accounting, Control and Reporting for all customer and products businesses, including Fuel and Retail, Advanced Mobility, Refining, Castrol and Air BP. She completed PwC’s CFO development programme in 2024.

David joined Convatec in November 2018. He was previously at Johnson and Johnson (J&J) for 26 years, where he held a variety of sales, marketing, strategic and operations roles. In his later roles, David spent 7 years as President of various J&J businesses, including US President for Cardiovascular and Specialty Services and Global President for Biosense Webster.

As President & Chief Operating Officer, Advanced Wound Care at Convatec until transitioning to his new role from 1 October 2025, David has been responsible for transforming our wound care business, with the industry’s most ambitious wound care solutions pipeline, focused on helping improve care for patients around the world. As Chief Commercial Officer, David will work across Convatec businesses to sharpen commercial execution, customer centricity and sharing best practice. He is responsible for Convatec’s Centres of Excellence for Global Marketing & Sales and Strategic Pricing.

David holds a Diploma in Marketing and a BSc in Management Science from the University of Lancaster.

Divakar joined Convatec in January 2020. Prior to joining he was Chief Digital Officer and Vice President for Eli Lilly’s Drug Delivery, Device and Digital Health groups, where he led a global R&D team focused on developing innovative and digitally-enabled devices to improve patient care. Divakar’s career in healthcare spans more than 20 years. During this time, in addition to working in product development, he has built strong expertise in process development. He served as Eli Lilly’s Vice President of Manufacturing Science and Technology, a role in which he oversaw all the company’s process development across its entire product portfolio.

Divakar holds a PhD in Chemical Engineering from Pennsylvania State University and a Bachelor of Technology degree in Chemical Engineering from Anna University in India. He also holds an MBA from Harvard Business School.

Tanja joined Convatec in January 2019 and has spent over 25 years in leadership roles across the medical technology, biopharma and pharmaceutical industry.

At Convatec, Tanja was Vice President, Advanced Wound Care – Europe until 2024, when she took on leadership for Convatec’s next generation adaptive platform, which brought to market our breakthrough nitric oxide wound dressing technology, ConvaNiox^TM, Tanja was promoted to the Convatec Executive Leadership Team as President & Chief Operating Officer, Advanced Wound Care in October 2025. 

Prior to Convatec, she held leadership roles with companies including Sandoz and Novartis, and previously served on the Board of HEXAL AG, a German pharmaceutical company, part of the Sandoz Group.

Tanja has a Bachelor’s degree in in Business Administration and Marketing from the University of Applied Sciences, Wuerzburgand, Germany and has also completed a range of executive education programmes including Harvard Business School’s Business Finance programme.

Bruno joined Convatec in August 2005 and has a diverse range of experience across Sales, Business Development & Global Emerging Markets. He was previously Head of our Latin America business before being promoted to an interim role of President & COO, Global Emerging Markets in September 2021. In May 2022 Bruno took over the position of President & Chief Operating Officer, Ostomy Care. From 2005-08, Bruno worked for Bristol Myers Squibb before its divestiture of Convatec in 2008.

In his former role, Bruno led a diverse team operating across eight countries and drove significant growth and expansion for the sub region. A key area of development has been the launch of seven Convatec Medical Care clinics throughout various countries in Latin America. Bruno was also responsible for achieving ‘Great Place to Work’ recognition for multiple markets within the region, demonstrating the importance of our values as an employer.

Bruno graduated with a Bachelor’s degree in Marketing & Advertising and a Master’s degree in Business Administration from Getúlio Vargas Business School, São Paulo, Brazil.

Mark joined Convatec in 2012 following the acquisition of 180 Medical – a leading home services medical devices company in the United States, offering high-quality catheters and ostomy products.

He has diverse experience across commercial, sales, marketing, customer loyalty programmes and operations. He joined 180 Medical in 2007 and has spent almost two decades in medical devices home services in roles – including as Director of Customer Services and Chief Operating Officer, including responsibility for home services technology – before his most recent role as Chief Commercial Officer, Home Services Group and VP, Head of Global Marketing – Continence Care, before being promoted to the Convatec Executive Leadership Team as President & Chief Operating Officer, Continence Care and Home Services Group in October 2024. Prior to joining Convatec he worked for several years in retail and logistics.

Mark leads a diverse team operating around the world and has driven significant growth within the Continence Care and Home Services Group business unit. A key area of leadership success has been Mark’s role in delivering world class customer Net Promotor Scores for 180 Medical and Amcare, and his leadership in accelerating customer loyalty more broadly across the business while also championing a range of culture and engagement programmes.

Mark completed Harvard Business School’s Advanced Management Programme in 2022 and has a Bachelor’s degree in Finance and Management from Oklahoma Baptist University.

Kjersti joined Convatec in January 2018 as President EMEA, and from February 2020, became President & Chief Operating Officer, Continence Care. In January 2022, she was appointed President & Chief Operating Officer, Infusion Care. Kjersti also has CELT-level responsibility for our Marketing Centre of Excellence.

Prior to Convatec, she was President Europe and the Middle East and President International, at Alere, Inc. Kjersti was a member of the founding team at Axis-Shield, which was acquired by Alere in 2011. Kjersti’s 25 years of experience in the medical technology sector includes over two decades in roles within diabetes care, including General Manager, Operations, Sales, Marketing and R&D positions.

Kjersti holds a Master of Science in Biotechnology from the Norwegian University of Science and Technology.

Anne Belcher joined Convatec on 18 April 2022 as President & Chief Operating Officer, Global Emerging Markets. 

Anne joined the business after 30 years at GlaxoSmithKline (GSK), where she most recently served as Senior Vice President & General Manager, Nordics. She originally joined GSK as a sales representative in New Zealand in 1991.

Anne has extensive experience in diverse market environments, including both mature and emerging markets across Asia Pacific, EMEA and the Americas. Her previous roles at GSK include SVP, Respiratory, Customer Capabilities and Operations, US (2019-2021); VP, General Manager in Australia (2016-2019); VP, Ethics and Compliance across Emerging Markets, Asia Pacific and Japan (2015-2016), General Manager of GSK’s Indonesian business (2011-15).

An outstanding people leader, she has built successful, compliant and effective teams that are results orientated, with a solid sales and commercial focus.

Originally from New Zealand, Anne is a pharmacist. Anne lives with her husband in Singapore.

Walter joined Convatec on 25 April 2022 as Head of Global Manufacturing, before being appointed to lead our Global Operations team in December 2025 on an interim basis.

A seasoned operations leader, bringing over 30 years’ experience in leading large and complex medical device operations to Convatec. Walter joined us from Hill-Rom, a global leader in medical technology, where he was most recently VP, Global Engineering Operations. Prior to Hill-Rom, Walter was VP, Global Manufacturing Operations at Haemonetics and was previously Director of Engineering at Covidien, as well as technical and operations roles at Gillette and P&G.

At Convatec, Walter has played a major role in delivering our global plant network optimisation, automation and standardisation programme, delivering significant efficiency benefits to the company and improvements for customers.

Walter holds a bachelor’s degree in Mechanical Design and Project Management, and an Executive MBA from Northeastern University, Boston. He is a US Army veteran where he served in the US Army 10^th Mountain Division for two years. Walter is based in Boston, US.  

Emma Rose joined Convatec on 8 April 2024. She was previously Chief Human Resources Officer at Travis Perkins plc, the UK’s largest distributor of building materials with more than 20,000 colleagues in the UK and Europe. Prior to this, Emma held senior HR roles at Kerry Foods, InterContinental Hotels Group and Mondelēz International.

She is a seasoned HR leader with over 20 years’ experience and a strong track record for delivering transformational people and culture strategies.

Emma is also a trustee and non-executive director of the Special Olympics Great Britain.

Evy joined Convatec in November 2020 as Chief of Corporate Strategy and Business Development and in April 2021 assumed the roles of General Counsel and Company Secretary. In May 2024, Evy’s role became EVP, Chief Strategy & Business Development Officer. Evy has deep expertise in the MedTech sector, having spent twenty years at Becton, Dickinson and Company prior to joining Convatec.  At BD, she was Senior Vice President of Corporate Development and Strategy and whilst there she helped the company build its capabilities around corporate development & strategy and assisted the global business units in strengthening their strategic focus and pursuing opportunities for partnerships, acquisitions and divestitures. Prior to her role in corporate development at BD, Evy held positions of increasing responsibility in the BD Law Group. She began her career at White & Case in New York.  

Evy holds a Juris Doctor Degree from Harvard Law School and a Bachelor’s with Honors in Political Science from Williams College, Massachusetts, U.S.

James Kerton joined Convatec on 7 May 2024, having previously been VP, Deputy General Counsel at Convatec between 2021-22. He leads Convatec’s global Legal, Intellectual Property, Ethics and Compliance, Data Privacy and Company Secretariat function.

James joined Convatec from Redde Northgate plc, where he was General Counsel and Company Secretary. James brings significant listed company and legal practice experience, having previously held senior legal roles at London Stock Exchange Group plc and Freshfields Bruckhaus Deringer LLP.

James is qualified as a solicitor in England and Wales, is a graduate of BPP Law School and holds an MA in History from the University of Cambridge.

Date of appointment: September 2019

Independent: Yes (on appointment)

Relevant skills and experience: John is a highly experienced Chair and Board member with over 20 years’ service as a board director, having previously been Chair of Rentokil Initial plc and United Utilities Group plc, and a Non‑Executive Director of several FTSE 100 and US companies. John also has an extensive track record of leading and implementing transformation strategy, including as Chief Executive of ICI plc between 2003 and 2008. Prior to that he spent more than two decades at Unilever plc, holding a number of senior management positions. John was awarded a CBE in 2020 for his services to business.

Current external appointments: None.

Date of appointment: March 2022 as Chief Financial Officer (November 2025 as Chief Executive Officer, and August 2025 as Interim Chief Executive Officer)

Relevant skills and experience: Jonny has more than 25 years’ leadership experience and is highly regarded for his contribution to Convatec’s successful transformation and turnaround. Jonny has extensive experience in leading publicly listed and international businesses. He brings diverse strategic enterprise transformation and operational leadership experience, combined with deep financial acumen and strong customer orientation. Before joining Convatec as CFO in 2022, Jonny was CFO of Dixons Carphone PLC (now known as Currys Plc) from 2018 to 2021, CFO of Halfords PLC from 2015 to 2018, CFO of Scandi Standard AB, CFO at Odeon and UCI Cinemas and FD of Sainsbury’s Supermarkets.

Current external appointments: Member of INSEAD Board of Directors.

Date of appointment: August 2017

Relevant skills and experience: Margaret is a chartered accountant with significant financial and executive experience, having been Managing Partner of Deloitte LLP and CFO of BAA plc. Her extensive audit and risk management experience enables Margaret to lead the Audit and Risk Committee in providing robust and constructive challenge to the external auditor and management on accounting, tax, treasury, ESG and risk management issues. Margaret has strong board experience, having previously served as a Non‑Executive Director of Whitbread plc and Standard Chartered plc, and CFO of BAA plc and Trinity Mirror plc (now Reach plc).

Current external appointments: Non‑Executive Director, Chair of the Audit and Risk Committee and member of the Nomination Committee of ITV plc. Non‑Executive Director, and member of the Audit and Compliance Committee and Nominations Committee of International Consolidated Airlines Group, S.A.

Date of appointment: September 2020

Relevant skills and experience: Constantin is an internationally recognised key opinion leader with a track record of translating research into commercial technologies and was awarded an OBE in 2022 for his services to Biomedical Engineering. Constantin has significant experience in drug delivery devices and technologies, previously leading the Oxford Centre for Drug Delivery Devices, a cross‑disciplinary centre working with pharmaceutical and medical device companies and the NHS. Other areas of deep knowledge and experience include antimicrobial technologies and advanced wound care, including as co‑investigator of a national programme on antibacterial technologies beyond antibiotics. Constantin was Founder and Director of OrganOx Limited until it was bought by Terumo Corporation in 2025.

Current external appointments: Director of the Institute of Biomedical Engineering, University of Oxford, Professorial Fellow of Magdalen College, University of Oxford, Founder and Director of OxSonics Limited and OrthoSon Limited, and Trustee of the Oxford Transplant Foundation.

Date of appointment: February 2022

Relevant skills and experience: Kim has extensive healthcare, reimbursement and MedTech experience, specialising in commercial strategy, product innovation, branding, business development and growth. Kim also has deep leadership experience gained through previous roles such as President and CEO of NYSE-listed Sonida Senior Living Corporation, President of GN Hearing North America, President of Resound US, President of Coloplast Chronic Care US, Chief Operating Officer of Senior Home Care and Executive Vice President and Chief Marketing Officer of Gentiva Health Services.

Current external appointments: Chair of Nobi N.V., Non‑Executive Director of Ball Ventures, Mozarc Medical and Geauga Hunger Task Force.

Date of appointment: March 2020

Relevant skills and experience: Brian is a chartered accountant with a strong financial and international business background having previously held the role of CFO of Bunzl plc from 2006 to 2019. Prior to that, Brian held a number of senior finance roles with Bunzl, including divisional Finance Director, Group Treasurer and Head of Internal Audit. He is also an experienced non‑executive director, having held previous roles at United Utilities Group PLC between 2012 and 2021, where he was also Chair of the Audit Committee. Brian has extensive experience in strategic initiatives to deliver growth and sustained shareholder returns.

Current external appointments: Non‑Executive Director and member of the Nominations and Governance Committee and Audit Committee of Ferguson Enterprises Inc. and Non‑Executive Director and Chair of the Audit and Risk Committee of OFI Group Limited.

Date of appointment: July 2020

Relevant skills and experience: Heather has significant international healthcare experience leading fully integrated global businesses. Heather spent 27 years with Abbott Laboratories where she held a number of global senior operational and strategic leadership roles, including Senior Vice President of Abbott Diabetes Care and most recently Executive Vice President of Abbott Nutrition. Heather also has a proven track record of overseeing the development of commercially viable new product pipelines and brand building, as well as international, commercial and operational experience.

Current external appointments: Chair of Assertio Therapeutics, Inc. and SCA Pharmaceuticals, LLC, and Non‑Executive Director of Immatics, Inc. and Pendulum Therapeutics, Inc.

Date of appointment: March 2022

Relevant skills and experience: Sharon brings over 40 years’ of healthcare and executive experience, with a focus on driving quality, efficiency and innovation. She was previously President and Chief Operating Officer of UChicago Medicine. Sharon also brings a wealth of non‑executive director experience, having previously served as a Non‑Executive Director of Aviv REIT and of Vocera Communications. Sharon holds an M.S. in Nursing Administration from the Loyola University of Chicago and a B.S. in Nursing from Northern Illinois University.

Current external appointments: Non‑Executive Director of Adtalem Global Education Inc.