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Seres Therapeutics, Inc.

For the period ended Sep 30, 2026. Filed Nov 4, 2026.

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About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Sep 30, 2026 · Filed Nov 4, 2026

MCRB$1.70-14.1%Stored close · as of Nov 9, 2026

Extracted filing text, with the paragraph anchors used by the comparison.

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Item 6. Exhibits

Incorporated by Reference · Filed/
ExhibitNumberExhibit DescriptionFormFile No.ExhibitFilingDateFurnishedHerewith
3.1Restated Certificate of Incorporation, filed on July 1, 20158-K001-374653.17/1/15
3.2Certificate of Amendment to Restated Certificate of Incorporation of Seres Therapeutics, Inc., dated June 27, 20238-K001-374653.16/28/23
3.3Certificate of Amendment to Restated Certificate of Incorporation of Seres Therapeutics, Inc., dated April 5, 20248-K001-374653.14/8/24
3.4Certificate of Amendment to Restated Certificate of Incorporation of Seres Therapeutics, Inc., dated April 21, 20258-K001-374653.14/22/25
3.5Amended and Restated Bylaws8-K001-374653.11/2/24
10.1Third Amendment to Lease and Termination Agreement, dated July 31, 2026, by and between Seres Therapeutics, Inc. and BMR-Sidney Research Campus, LLC8-K001-3746510.18/4/26
10.2Stock Issuance Agreement, dated July 31, 2026, by and between Seres Therapeutics, Inc. and BMR-Sidney Research Campus, LLC8-K001-3746510.28/4/26
10.3Advisory Agreement, dated November 2, 2026, by and between Marella Thorell and Seres Therapeutics, Inc.
31.1Rule 13a-14(a)/15d-14(a) Certification of Interim Chief Executive Officer*
31.2Rule 13a-14(a)/15d-14(a) Certification of Chief Financial Officer*
32.1Section 1350 Certification of Interim Chief Executive Officer**
32.2Section 1350 Certification of Chief Financial Officer**
101.INSInline XBRL Instance Document - the Instance Document does not appear in the interactive data file because its XBRL tags are embedded within the Inline XBRL document*
101.SCHInline XBRL Taxonomy Extension Schema Document*
104Cover Page Interactive Data File (formatted as Inline XBRL and contained in Exhibit 101)*
  • Filed herewith.

** Furnished herewith.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.