Seres Therapeutics
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Seres Therapeutics (MCRB) investor relations material

Seres Therapeutics Status update summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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Status update summary3 Mar, 2026

Leadership and Organizational Updates

  • Richard N. Kender appointed as Executive Chair and Interim CEO, bringing over 35 years of biopharma experience, including senior roles at Merck & Co.

  • Previous co-CEOs continue as Chief Legal Officer and Chief Financial Officer, ensuring leadership continuity.

  • Matthew Henn, Ph.D., becomes President in addition to Chief Scientific Officer; Kelly Brady, M.S., promoted to Chief Operating Officer.

  • Recent management transitions emphasize continuity and expertise in biotherapeutics.

Strategic Focus and Pipeline Developments

  • The organization is leveraging a proven scientific foundation to advance live biotherapeutic drugs for unmet medical needs, focusing on inflammatory and immune diseases, especially IBD and immune checkpoint-related enterocolitis (irEC).

  • SER-155 is being evaluated in a fully enrolled investigator-sponsored trial for irEC, with data expected in Q2 2026.

  • SER-155 is Phase 2 ready for allo-HSCT patients, with preparations complete and pending additional funding.

  • SER-603, a preclinical candidate for IBD, is in IND-enabling activities and positioned as a non-immunosuppressive therapy with significant commercial potential.

  • Development of an oral liquid LBP formulation based on SER-155 strains is progressing, supported by a CARB-X grant.

Financial Position and Operational Updates

  • Cash and cash equivalents stood at $45.8 million as of December 31, 2025, including $12.2 million raised in Q4 2025.

  • Cost reduction measures, including workforce reduction, have been implemented to extend the cash runway.

  • Current cash is expected to fund operations through Q3 2026, with ongoing efforts to secure further funding.

  • Future financial results and business updates will be communicated via press release; earnings calls will be discontinued.

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Q4 202512 Mar, 2026
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Frequently asked questions

Seres Therapeutics, Inc. is a microbiome therapeutics platform company that engages in developing bacterial consortia that are designed to functionally interact with host cells and tissues to treat disease. The company's lead product candidate is the SER-109, an oral microbiome therapeutic candidate which has completed Phase III clinical trial for the treatment of CDI. It also develops SER-155 and SER-287 which are in Phase Ib clinical trial to reduce incidences of gastrointestinal infections and ulcerative colitis; SER-301 that is in Phase Ib clinical trial to treat metastatic melanoma; and SER-262 to treat Clostridioides difficile infection.

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