February 3, 2026: Monthly Information Regarding the Total Number of Voting Rights and Shares Comprising the Share Capital

Date : February 3, 2026

Monthly Information Regarding the Total Number of Voting Rights and Shares Comprising the Share Capital

Article 223-16 of the General Regulations of the Financial Markets Authority
(AMF – Autorité des Marchés Financiers)

Lyon, France, February 3, 2026 – 6:00 pm CET – MaaT Pharma (EURONEXT: MAAT – the “Company”), a clinical-stage biotechnology company and a leader in the development of Microbiome Ecosystem TherapiesTM (MET) dedicated to enhancing survival for patients with cancer through immune modulation, today published the number of shares comprising the share capital and the total number of voting rights (Article L. 233-8 of the French Commercial Code (Code de commerce) and Article 223-16 of the General Regulations of French Autorité des Marchés Financiers (AMF)) on January 31, 2026.

Listing place: Euronext Paris

ISIN code: FR0012634822

Websitewww.maatpharma.com

DateTotal number of shares comprising the share capitalTotal number of
theoretical voting rights (1)
Total number of effective voting rights (2)
01/31/2618,847,47518,847,47518,833,820

(1) In accordance with Article 223-11 of the AMF General Regulation, this number is calculated on the basis of all shares to which voting rights are attached, including shares whose voting rights have been suspended.
(2) Effective voting rights correspond to the total number of voting rights that may be used at a General Meeting. The total number of effective voting rights is calculated without taking into account the shares with suspended voting rights.

 

About MaaT Pharma
MaaT Pharma is a leading, late-stage clinical company focused on developing innovative gut microbiome-driven therapies to modulate the immune system and enhance cancer patient survival. Supported by a talented team committed to making a difference for patients worldwide, the Company was founded in 2014 and is based in Lyon, France. As a pioneer, MaaT Pharma is leading the way in bringing the first microbiome-driven immunomodulator in oncology. Using its proprietary pooling and co-cultivation technologies, MaaT Pharma develops high diversity, standardized drug candidates, aiming at extending life of cancer patients. MaaT Pharma has been listed on Euronext Paris (ticker: MAAT) since 2021.

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Acting Chief Scientific Officer

Sheri Simmons

Sheri Simmons, Ph.D., is Acting Chief Scientific Officer at MaaT Pharma. Sheri brings extensive experience in biotechnology, particularly in the microbiome field, having held scientific leadership positions at Seres Therapeutics, Johnson & Johnson’s Microbiome Solutions team, and most recently at Seed Health, a leading probiotics company. In her role, she strengthens the Company’s scientific leadership, overseeing preclinical research, AI/data initiatives, and supporting efforts toward the Marketing Authorization Application of Xervyteg® in aGvHD.

Sheri holds a PhD in Biological Oceanography from the Massachusetts Institute of Technology (MIT) and completed an A.B. in Ecology & Evolutionary Biology at Princeton University, graduating summa cum laude and as a Phi Beta Kappa member, receiving one of six awards for the best senior thesis in the sciences. Sheri holds a PhD in Biological Oceanography from the Massachusetts Institute of Technology (MIT) and completed an A.B. in Ecology & Evolutionary Biology at Princeton University, graduating summa cum laude and as a Phi Beta Kappa member, receiving one of six awards for the best senior thesis in the sciences.

CEO and co-founder

Hervé Affagard

Hervé Affagard is the CEO and co-founder of MaaT Pharma. For the past 15 years, Hervé has been an intra/entrepreneur in the healthcare industry, after starting his career in IT in the steel industry. In late 2014, Hervé co-founded the company alongside Dr. Joël Doré, author of nearly 500 publications, and
one of the world’s most cited authors in the microbiome sphere today, after a professional career that spanned multiple industries. Hervé has led MaaT Pharma’s development from its early concept in 2013 and has been at the forefront of the development of the microbiome healthcare ecosystem in France and Europe. In January 2022, Hervé has been elected President of Allliance Promotion Microbiote, an organization founded in 2021 to support the microbiome sector development in France.

Engineer, MBA