Seres Therapeutics, Inc.

MCRB·NASDAQ·$7.59Share Price as of 11/2·$74MMarket Cap as of 11/2

Financials

10-QQ2 ended 06/30/2608/05/26 10-QQ1 ended 03/31/2605/05/26 10-KFY 202503/12/26 10-QQ3 ended 09/30/2511/05/25 10-QQ2 ended 06/30/2508/06/25

Disclosures

8-KCurrent report10/26/26 8-KCurrent report08/05/26 8-KEntry into Material Agreement; Termination of Material Agreement08/04/26 8-KChange in Directors or Officers; Shareholder Vote Results07/08/26 8-KRegulation FD Disclosure; Other Events07/08/26

Prospectuses and Registrations

S-3Shelf registration08/13/26 424B5Prospectus supplement08/04/26 S-8Registration of securities for employees07/09/26 S-8Registration of securities for employees05/07/25 S-8Registration of securities for employees03/13/25

Proxies

DEF 14ADefinitive proxy04/27/26 DEFA14AAdditional proxy materials04/27/26 DEFA14AAdditional proxy materials04/04/25 DEF 14ADefinitive proxy03/13/25 PRE 14APreliminary proxy03/03/25

Ownership

Form 4Insider transaction08/18/26 Form 4Insider transaction08/18/26 Form 4Insider transaction08/18/26 Form 4Insider transaction08/18/26 Form 4Insider transaction07/10/26

Other

EFFECTRequest for effectiveness08/21/26 EFFECTRequest for effectiveness10/11/24 CORRESPCorrespondence with the SEC10/09/24 UPLOADLetter from the SEC10/08/24 EFFECTRequest for effectiveness08/15/23