Cellectis Announces the Appointment of Axel-Sven Malkomes & Dr. Donald A Bergstrom, M.D., Ph.D., to its Board of Directors

New York, NY – June 28, 2022 - Cellectis (the “Company”) (Euronext Growth: ALCLS - NASDAQ: CLLS), a clinical-stage biotechnology company using its pioneering gene-editing platform to develop life-saving cell and gene therapies, today announced that during the annual shareholders meeting, Axel-Sven Malkomes and Donald Bergstrom, M.D., Ph.D., have been appointed as Directors of the Company’s Board of Directors, effective immediately.

“We are pleased to continue our work with Dr. Bergstrom and to welcome Mr. Malkomes to the Cellectis Board. They are both seasoned leaders within the healthcare industry, who bring decades of experience in both the healthcare and financial services sectors to Cellectis. We are confident they will provide meaningful and valued perspectives as we continue to progress toward becoming one of the few end-to-end cell and gene therapy companies,” said Dr. André Choulika, Chief Executive Officer.

Donald A Bergstrom, M.D., Ph.D.

As of today, Dr. Bergstrom will serve as Director of Cellectis’ Board. Previously, Donald A Bergstrom, M.D., Ph.D., was appointed as a Board Observer on the Company’s Board of Directors on November 4, 2021.

Dr. Bergstrom currently serves as Executive Vice President, Head of Research and Development at Relay Therapeutics, Inc., a clinical-stage precision medicines company. He brings with him over 15 years of experience in the biopharmaceutical and medical industries.

Prior to his tenure at Relay Therapeutics, Dr. Bergstrom was Chief Medical Officer at Mersana Therapeutics, where he led the advancement of two products based on Mersana’s proprietary antibody-drug conjugate platform through non-clinical development and into Phase 1 clinical trials. Prior to Mersana, he was Global Head of Translational and Experimental Medicine at Sanofi Oncology. At Sanofi, Dr. Bergstrom held roles of increasing responsibility at Merck Research Laboratories, culminating in his role as Oncology Franchise Lead, Experimental Medicine. Dr. Bergstrom holds an M.D. from the University of Washington, Seattle, and a Ph.D. from the Fred Hutchinson Cancer Research Center, where he also completed his post-doctoral training. He was a resident in clinical pathology at the University of Washington.

Axel-Sven Malkomes

Axel-Sven Malkomes served as Chief Financial Officer & Chief Business Officer at Medigene AG, a clinical stage immuno-oncology company focusing on the development of T-cell immunotherapies for the treatment of cancer, until March 31st, 2022. He brings with him over 25 years of experience in the healthcare sector.

Previous to his tenure at Medigene, Mr. Malkomes served as Vice Chairman & Managing Director of the Life Sciences Practice for the British bank Barclays in Europe. Prior to joining Barclays, he was Global Head of Healthcare & Chemicals Investment Banking at the French corporate and investment bank Société Générale.

On the investor side, Mr. Malkomes has accumulated relevant experience during his several years with the UK listed private equity firm 3i plc. as co-head of European Healthcare Investments. Previously, he had leading operational and corporate roles at the German pharmaceutical company Merck KGaA, i.e. as Head of Strategic Planning as well as Head of Mergers & Acquisitions/Business Development, where he significantly participated in the initial set-up and build-out of the company's oncology business.

During his international management career, Mr. Malkomes gained extensive knowledge of the pharmaceutical industry.