---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-23-250341"
form_type: "8-K"
ticker: "MCRB"
cik: "0001609809"
company_name: "Seres Therapeutics, Inc."
filed_at: "2023-10-04T23:59:59+00:00"
generated_at: "2026-06-10T04:49:34.446735+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Director Grégory Behar resigns from Seres Therapeutics board effective Oct 2, 2023

## Summary
- Grégory Behar resigned from the board effective October 2, 2023.
- Resignation follows his departure from Nestlé Health Science.
- No replacement or additional board changes were announced.

## SEC filing metadata
- accession: 0001193125-23-250341
- form_type: 8-K
- ticker: MCRB
- cik: 0001609809
- company_name: Seres Therapeutics, Inc.
- filed_at: 2023-10-04T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1609809/000119312523250341/0001193125-23-250341-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1609809/000119312523250341/d547449d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-23-250341
- JSON: https://secwatch.observer/filing/0001193125-23-250341.json
- Plain text: https://secwatch.observer/filing/0001193125-23-250341.txt

## Key facts
- Executive change
  Grégory Behar resigned as director at Seres Therapeutics, Inc..
  - Action: resigned
  - Role: director
  source text: On October 2, 2023, Grégory Behar informed Seres Therapeutics, Inc. (the “Company”) of his resignation from the board of directors of the Company, effective immediately, in connection with his resignation from Nestlé Health Science.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1609809/000119312523250341/0001193125-23-250341-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.