May 11, 2026: MaaT Pharma to Hold Annual General Meeting on June 16, 2026

Date : May 11, 2026

MaaT Pharma to Hold Annual General Meeting on June 16, 2026

Lyon, France, May 11, 2026 – 6:00pm 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, informs its shareholders that the Annual General Meeting (ordinary and extraordinary) will be held on June 16, 2026, at 9:30am CET at the Company’s headquarter in France located at 70 avenue Tony Garnier, 69007 Lyon and will also be broadcasted live.

The notice of meeting, serving as convening notice is published in the Bulletin des annonces légales obligatoires on Monday, 11 May 2026 (www.journal-officiel.gouv.fr/pages/balo), in bulletin no. 56 (reference 2601636). It contains the detailed agenda, the draft resolutions and the main terms and conditions of participation and voting at this meeting.

The convening notice will be published in the Journal des annonces légales “Le Tout Lyon” on 27 May 2026. It will also be sent to registered shareholders and made available to institutions holding bearer shares.

The documents and information relating to this General Meeting have been and will be, in accordance with the applicable laws and regulations:

  • posted on MaaT Pharma’s website (www.maatpharma.com/investors) under the section “Investors/General Meetings/2026”;
  • made available to shareholders at the Company’s registered office at 70 avenue Tony Garnier, 69007 Lyon, France;
  • and sent to shareholders by Uptevia – Service Assemblées Générales, 90 – 110 Esplanade du Général de Gaulle – 92931 Paris La Défense Cedex, on receipt of their request.

 

Further information on this General Meeting, and on how shareholders can vote, is available on MaaT Pharma’s website under the Investors section (“Participating in the General Meeting”).
The General Meeting will be broadcast live via a dedicated platform and can be accessed through the link here. A recording of the General Meeting will be made available on the Company’s website within the timeframe required by applicable regulations.

Financial Calendar*

• May 26, 2026: Publication of Q1 2026 revenue and cash position
• June 16, 2026: Annual General Meeting
• September 15, 2026: Publication of H1 2026 results
• November 16, 2026: Publication of Q3 2026 revenue and cash position
(*Indicative calendar that may be subject to change.)

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.

Forward-looking Statements
All statements other than statements of historical fact included in this press release about future events are subject to (i) change without notice and (ii) factors beyond the Company’s control. These statements may include, without limitation, any statements preceded by, followed by, or including words such as “target,” “believe,” “expect,” “aim”, “intend,” “may,” “anticipate,” “estimate,” “plan,” “project,” “will,” “can have,” “likely,” “should,” “would,” “could” and other words and terms of similar meaning or the negative thereof. Forward-looking statements are subject to inherent risks and uncertainties beyond the Company’s control that could cause the Company’s actual results or performance to be materially different from the expected results or performance expressed or implied by such forward-looking statements.

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