---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-093436"
form_type: "8-K"
ticker: "IMRX"
cik: "0001790340"
company_name: "Immuneering Corp"
filed_at: "2025-09-25T23:59:59+00:00"
generated_at: "2026-05-17T05:41:25.025009+00:00"
event_type: "other_material"
sentiment: "neutral"
materiality_score: 0.75
calibrated_materiality_score: 0.75
confidence: "high"
source: SEC EDGAR
---

# Immuneering prices $175M public offering; Sanofi invests $25M in concurrent private placement

## Summary
- Public offering of 18,959,914 shares at $9.23/share; expected gross ~$175M; net proceeds ~$164.1M.
- Sanofi subsidiary Aventis to invest $25M via private placement at same price, 2,708,559 shares.
- Combined net proceeds ~$187.4M; cash runway extended into 2029; closing expected Sep 26, 2025.
- Company reduced ATM program by $1.25M and suspended sales under that amount.
- Proceeds to advance preclinical/clinical development and for general corporate purposes.

## SEC filing metadata
- accession: 0001104659-25-093436
- form_type: 8-K
- ticker: IMRX
- cik: 0001790340
- company_name: Immuneering Corp
- filed_at: 2025-09-25T23:59:59+00:00
- event_type: other_material
- sentiment: neutral
- materiality_score: 0.75
- calibrated_materiality_score: 0.75
- confidence: high
- sec_items: 1.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1790340/000110465925093436/0001104659-25-093436-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1790340/000110465925093436/tm2526946d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-093436
- JSON: https://secwatch.observer/filing/0001104659-25-093436.json
- Plain text: https://secwatch.observer/filing/0001104659-25-093436.txt

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