---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-013266"
form_type: "8-K"
ticker: "PULM"
cik: "0001574235"
company_name: "Pulmatrix, Inc."
filed_at: "2026-03-27T23:59:59+00:00"
generated_at: "2026-05-15T08:37:53.009930+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.85
calibrated_materiality_score: 0.85
confidence: "high"
source: SEC EDGAR
---

# Pulmatrix to merge with Eos SENOLYTIX; Eos stockholders to own ~94% of combined company

## Summary
- Pre-Merger Eos stockholders to own ~94% of combined company; Pulmatrix stockholders ~6% on fully-diluted basis.
- Combined company to be renamed 'Eos SENOLYTIX, Inc.'; board of 6 members, 5 designated by Eos.
- Pulmatrix raises $1M via Series B Convertible Preferred (8% dividend, conversion at $2.20) from Eos affiliate.
- Eos to raise up to $18M via convertible notes (8% interest) and Series A Preferred financing.
- Closing conditions include stockholder approvals, Nasdaq listing, and SEC registration statement effectiveness.

## SEC filing metadata
- accession: 0001493152-26-013266
- form_type: 8-K
- ticker: PULM
- cik: 0001574235
- company_name: Pulmatrix, Inc.
- filed_at: 2026-03-27T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.85
- calibrated_materiality_score: 0.85
- confidence: high
- sec_items: 1.01, 3.02, 3.03, 5.01, 5.03, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1574235/000149315226013266/0001493152-26-013266-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1574235/000149315226013266/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-013266
- JSON: https://secwatch.observer/filing/0001493152-26-013266.json
- Plain text: https://secwatch.observer/filing/0001493152-26-013266.txt

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