---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-108482"
form_type: "8-K"
ticker: "MCRB"
cik: "0001609809"
company_name: "Seres Therapeutics, Inc."
filed_at: "2026-03-16T23:59:59+00:00"
generated_at: "2026-05-15T11:46:03.974541+00:00"
event_type: "other"
sentiment: "neutral"
materiality_score: 0.1
calibrated_materiality_score: 0.1
confidence: "high"
source: SEC EDGAR
---

# Seres Therapeutics sets 2026 annual meeting for June 9

## Summary
- Record date for voting is April 13, 2026; stockholders of record on that date are entitled to vote.
- Rule 14a-8 stockholder proposals must be received by March 26, 2026, which is 10 days after this filing.
- Definitive proxy statement will specify meeting time and location.
- Meeting is scheduled more than 30 days after the 2025 annual meeting, triggering the revised proposal deadline.

## SEC filing metadata
- accession: 0001193125-26-108482
- form_type: 8-K
- ticker: MCRB
- cik: 0001609809
- company_name: Seres Therapeutics, Inc.
- filed_at: 2026-03-16T23:59:59+00:00
- event_type: other
- sentiment: neutral
- materiality_score: 0.1
- calibrated_materiality_score: 0.1
- confidence: high
- sec_items: 8.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1609809/000119312526108482/0001193125-26-108482-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1609809/000119312526108482/d47103d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-108482
- JSON: https://secwatch.observer/filing/0001193125-26-108482.json
- Plain text: https://secwatch.observer/filing/0001193125-26-108482.txt

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