Seres Therapeutics, Inc. · Healthcare
Seres Therapeutics, Inc., a microbiome therapeutics platform company, 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 that has completed Phase III clinical trial for the treatment of clostridium difficile infection (CDI). It is also developing SER-155, a cultivated bacteria microbiome drug, which is Phase Ib clinical trial to reduce incidences of gastrointestinal infections, bloodstream infections, and graft versus host diseases in immunocompromised patients receiving allogeneic hematopoietic stem cell transplantation and solid organ transplants. In addition, the company engages in the development of SER-287 and SER-301 that are in Phase Ib to treat ulcerative colitis; SER-401 for patients with metastatic melanoma; and SER-262 to treat Clostridioides difficile infection. It has license and collaboration agreements with Nestec Ltd. and Memorial Sloan Kettering Cancer Center. The company was formerly known as Seres Health, Inc. and changed its name to Seres Therapeutics, Inc. in May 2015. Seres Therapeutics, Inc. was incorporated in 2010 and is headquartered in Cambridge, Massachusetts.
Healthcare
Biotechnology
103
2015-06-26
0.26

CAMBRIDGE, Mass., April 09, 2026 (GLOBE NEWSWIRE) -- Seres Therapeutics, Inc. (Nasdaq: MCRB), (Seres or the Company), a leading live biotherapeutics company, today announced that it will present at the 2026 CARB-X Investor Day on April 16, 2026, which precedes the European Society of Clinical Microbiology and Infectious Diseases (ESCMID) Global conference in Munich, Germany.

Readout of investigator-sponsored SER-155 study in immune checkpoint–related enterocolitis, a frequent and serious side effect in cancer patients treated with immune checkpoint inhibitors, on track for Q2 2026

Seres Therapeutics, Inc. (MCRB) Discusses Leadership Transition, Strategic Direction and Microbiome Therapeutics Platform Prepared Remarks Transcript

Accomplished pharmaceutical executive brings extensive business development, licensing and finance experience Seres is implementing a focused corporate strategy to advance live biotherapeutic programs in inflammatory and immune diseases and support the readout of investigator-sponsored SER-155 study in immune checkpoint–related enterocolitis, a frequent and serious side effect in cancer patients treated with immune checkpoint inhibitors, expected in Q2 2026 SER-155 is Phase 2 ready for patients undergoing allogeneic hematopoietic stem cell transplant (allo-HSCT) to treat hematologic malignancies (cancers of the blood, bone marrow, and lymph nodes); efforts to secure funding for the program continue Company to host conference call tomorrow, March 3, at 8:30 am ET CAMBRIDGE, Mass., March 02, 2026 (GLOBE NEWSWIRE) -- Seres Therapeutics, Inc. (Nasdaq: MCRB), (Seres or the Company), a leading live biotherapeutics company, today announced the appointment of Richard N.

Seres Therapeutics Inc. (NASDAQ: MCRB) shares are down during Thursday's premarket session following the company's announcement of a strategic shift in its operations.

Seres has finalized the protocol for the Phase 2 study of SER-155 in patients undergoing allogeneic hematopoietic stem cell transplant (allo-HSCT) with the FDA and has advanced key study startup activities and will pause further investment, while efforts to seek funding for the study remain ongoing Company's runway extension actions, including reducing the workforce by approximately 30%, are expected to extend its cash runway through Q3 2026 Seres will focus on advancing development of its early-stage live biotherapeutic programs in Inflammatory and immune diseases and supporting the read-out of clinical results from the fully enrolled Investigator-sponsored SER-155 study in immune checkpoint related enterocolitis (irEC), a frequent and severe adverse events in recipients of ICI therapy, expected in early Q2 2026 CAMBRIDGE, Mass., Feb. 12, 2026 (GLOBE NEWSWIRE) -- Seres Therapeutics, Inc. (Nasdaq: MCRB), a leading live biotherapeutics company, today announced that, following advancement of key startup activities for the SER-155 Phase 2 study in allo-HSCT, including the submission of a final protocol to the FDA, study site evaluation and qualification with its CRO, and manufacturing of Phase 2 study drug substance, Seres is pausing additional investment in that program and will shift its operational focus to high-value earlier-stage pipeline programs while continuing to seek funding for the SER-155 Phase 2 study.
Brady Kelly
officer: See Remarks
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Brady Kelly
officer: See Remarks
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Brady Kelly
officer: See Remarks
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Brady Kelly
officer: See Remarks
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Brady Kelly
officer: See Remarks
1,430 SH @ $23.00
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Brady Kelly
officer: See Remarks
730 SH @ $0.00
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Kender Richard N
director, officer: See Remarks
150,000 SH @ $9.13
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Henn Matthew R
officer: See Remarks
75,000 SH @ $9.13
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