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Seres Therapeutics Inc Stock Price, News & Analysis

MCRB Nasdaq

Welcome to our dedicated page for Seres Therapeutics news (Ticker: MCRB), a resource for investors and traders seeking the latest updates and insights on Seres Therapeutics stock.

Seres Therapeutics, Inc. (Nasdaq: MCRB) is a clinical-stage live biotherapeutics company that regularly issues news about its microbiome-based drug programs, regulatory interactions, and corporate developments. The company focuses on oral live biotherapeutics for medically vulnerable patient populations, particularly adults undergoing allogeneic hematopoietic stem cell transplant (allo-HSCT) and other high-risk groups.

News about Seres often centers on its lead investigational candidate SER-155, including Phase 1b clinical data showing a significant reduction in bacterial bloodstream infections, systemic antibiotic exposure, and febrile neutropenia in allo-HSCT patients compared with placebo. Updates also cover regulatory designations for SER-155, such as Breakthrough Therapy and Fast Track status, and detailed feedback from the U.S. Food and Drug Administration on the design of a planned Phase 2 study.

Investors and followers of MCRB can expect announcements on clinical trial progress, investigator-sponsored studies in areas like immune checkpoint inhibitor–related enterocolitis, and research presentations at major medical meetings. Seres also issues press releases on mechanistic publications for its live biotherapeutics, including VOWST™, and on data generated from its MbTx® platform that support its broader live biotherapeutic strategy.

In addition to R&D updates, Seres publishes news on cost-reduction actions, cash runway expectations, leadership changes, and efforts to secure capital or partnerships to advance its pipeline. For those tracking MCRB, this news feed provides a centralized view of program milestones, scientific data, regulatory interactions, and corporate actions that shape the company’s live biotherapeutics portfolio.

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Seres Therapeutics has secured a $250 million senior secured debt facility from Oaktree Capital Management, with $110 million received at closing. This financing supports the commercial launch of VOWST™ and advances the company’s pipeline.

The initial $110 million will retire $53 million of existing debt, leaving around $50 million for operations. The loan carries an interest rate of SOFR + 7.875%, capped at 12.875%, maturing in six years with a possible three-year extension.

With VOWST's FDA approval in April 2023, Seres aims to lead in microbiome therapeutics. The partnership with Oaktree is vital for Seres’ growth, addressing significant medical needs.

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Seres Therapeutics announced that the FDA has approved VOWST (fecal microbiota spores, live-brpk), the first orally administered microbiota-based therapeutic for preventing recurrent C. difficile infection (CDI) in adults post-antibacterial treatment. The approval follows the successful Phase 3 ECOSPOR III study, which indicated that 88% of treated patients were recurrence-free at eight weeks. VOWST is expected to be available in June 2023, with a milestone payment of $125 million to Seres from Nestlé Health Science linked to the FDA approval. The joint commercialization effort aims to address a significant unmet medical need as recurrent CDI is a leading cause of hospital-acquired infections. The product does not treat CDI but aims to prevent its recurrence.

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FAQ

What is the current stock price of Seres Therapeutics (MCRB)?

The current stock price of Seres Therapeutics (MCRB) is $8.71 as of April 9, 2026.

What is the market cap of Seres Therapeutics (MCRB)?

The market cap of Seres Therapeutics (MCRB) is approximately 84.0M.