UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 8-K CURRENT REPORT Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 Date of Report (Date of earliest event reported): January 9, 2025 SERES THERAPEUTICS, INC. (Exact name of Registrant as Specified in Its Charter) Delaware 001-37465 27-4326290 (State or other jurisdiction of incorporation) (Commission File Number) (IRS Employer Identification No.) 101 Cambridgepark Drive Cambridge, MA 02140 (Address of princip ...