SER-155 Clinical Progress
SER-155 Phase Ib study showed a 77% relative risk reduction in bacterial bloodstream infections, decreased antibiotic exposure, and febrile neutropenia. The FDA provided constructive feedback, aligning on key study parameters for the Phase II protocol.
Non-Dilutive Funding and Recognition
Seres received a $3.6 million award from CARB-X to develop an oral liquid formulation of SER-155, highlighting global recognition of the potential of their biotherapeutic approach to address antimicrobial resistance.
Financial Turnaround
Seres reported a net income from continuing operations of $8.2 million in Q3 2025, compared to a net loss of $51 million in Q3 2024, with a $27.2 million gain on the sale of VOWST.
Cost Reduction Measures
Implemented a 25% workforce reduction to extend cash runway and focus resources on core development priorities.