v3.26.1
Document and Entity Information
 3 Months Ended
Mar. 31, 2026
Document Information [Line Items]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Mar. 31, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus Q1
Trading Symbol MCRB
Entity Registrant Name Seres Therapeutics, Inc.
Entity Central Index Key 0001609809
Entity Current Reporting Status Yes
Current Fiscal Year End Date --12-31
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Entity Shell Company false
Entity File Number 001-37465
Entity Tax Identification Number 27-4326290
Entity Address, Address Line One 101 Cambridgepark Drive
Entity Address, City or Town Cambridge
Entity Address, State or Province MA
Entity Address, Postal Zip Code 02140
City Area Code 617
Local Phone Number 945-9626
Entity Incorporation, State or Country Code DE
Document Quarterly Report true
Document Transition Report false
Entity Interactive Data Current Yes
Title of 12(b) Security Common Stock, par value $0.001
Security Exchange Name NASDAQ