---
schema_version: "secwatch.filing_event.v1"
accession: "0001493152-26-018202"
form_type: "8-K"
ticker: "PULM"
cik: "0001574235"
company_name: "Pulmatrix, Inc."
filed_at: "2026-04-21T23:59:59+00:00"
generated_at: "2026-05-15T05:06:34.491910+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 0.6
calibrated_materiality_score: 0.6
confidence: "high"
source: SEC EDGAR
---

# Pulmatrix closes $1M Series B preferred placement as part of planned merger with Eos

## Summary
- Gross proceeds of approximately $1 million from Series B Preferred Stock issued to Eos affiliate.
- Conversion price of $2.20 per share; convertible 90 days after issuance.
- Placement is an initial step in the planned merger with Eos SENOLYTIX; definitive agreement signed.
- Net proceeds to be used for working capital and general corporate purposes.
- Interim CEO Peter Ludlum highlighted the investment as part of the ongoing merger process.

## SEC filing metadata
- accession: 0001493152-26-018202
- form_type: 8-K
- ticker: PULM
- cik: 0001574235
- company_name: Pulmatrix, Inc.
- filed_at: 2026-04-21T23:59:59+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 0.6
- calibrated_materiality_score: 0.6
- confidence: high
- sec_items: 7.01, 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1574235/000149315226018202/0001493152-26-018202-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1574235/000149315226018202/form8-k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001493152-26-018202
- JSON: https://secwatch.observer/filing/0001493152-26-018202.json
- Plain text: https://secwatch.observer/filing/0001493152-26-018202.txt

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