---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-24-005633"
form_type: "8-K"
ticker: null
cik: "0001828522"
company_name: "eFFECTOR Therapeutics, Inc."
filed_at: "2024-01-10T23:59:59+00:00"
generated_at: "2026-06-07T01:02:14.532912+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# eFFECTOR Therapeutics to effect 1-for-25 reverse stock split on Jan 12, 2024

## Summary
- Reverse stock split of 1-for-25 effective at 12:01 a.m. ET on Jan 12, 2024.
- Outstanding shares reduce from approx. 74.9M to approx. 3.0M; authorized shares cut from 1B to 40M.
- Par value unchanged; no fractional shares issued, cash paid for fractional interests.
- Trading on Nasdaq on split-adjusted basis begins at market open Jan 12; new CUSIP 28202V207 for common.

## SEC filing metadata
- accession: 0001193125-24-005633
- form_type: 8-K
- cik: 0001828522
- company_name: eFFECTOR Therapeutics, Inc.
- filed_at: 2024-01-10T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 3.03, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1828522/000119312524005633/0001193125-24-005633-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1828522/000119312524005633/d435653d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-24-005633
- JSON: https://secwatch.observer/filing/0001193125-24-005633.json
- Plain text: https://secwatch.observer/filing/0001193125-24-005633.txt

## Key facts
- Governance Changes
  eFFECTOR Therapeutics, Inc.: Amendment to certificate of incorporation to effectuate a 1-for-25 reverse stock split, reducing authorized shares proportionally (effective 2024-01-12).
  - Change: charter amendment
  - Effective: 2024-01-12
  source text: On January 9, 2024, eFFECTOR Therapeutics, Inc. (the “Company”) filed an amendment (the “Amendment”) to its amended and restated certificate of incorporation to effectuate a reverse stock split of the Company’s common stock, par value $0.0001per share (“Common Stock”).
  evidence_url: https://www.sec.gov/Archives/edgar/data/1828522/000119312524005633/0001193125-24-005633-index.htm

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