# Pulmatrix, Inc. (PULM) — merger/definitive [pending]
Source: SEC API (secapi.ai) · situation sit_391449707995de7cc760 · retrieved 2026-08-11T16:12:42.407Z

## Overview
Eos SENOLYTIX is a biotechnology company developing first-in-class gerotherapeutic peptide medicines that target the underlying biological mechanisms of aging, with lead clinical candidates PTC-2105 and PTC-2107 designed to improve mitochondrial efficiency and selectively trigger apoptosis of senescent cells.

Eos SENOLYTIX, Inc., a biotechnology company developing first-in-class mitochondrial-targeted gerotherapeutic medicines, entered into a Merger Agreement with Pulmatrix, Inc. (Nasdaq: PULM) on March 26, 2026. The proposed merger is expected to close in the third quarter of 2026, subject to customary closing conditions. Upon completion, the combined company will operate under the new ticker symbol MTXL. Merger-associated financings are expected to support advancement of the combined company's pipeline through key clinical milestones.

## Terms
- Counterparty: Pulmatrix, Inc.

## Key dates
- Announced 2026-06-05 · Expected close 2026-09-30

## Timeline
- 2026-06-05 · 425 (0001493152-26-027416): 425 - Pulmatrix, Inc. — *Eos SENOLYTIX is a biotechnology company developing first-in-class gerotherapeutic peptide medicines that target the underlying biological mechanisms of aging, with lead clinical candidates PTC-2105 and PTC-2107 designed to improve mitochondrial efficiency and selectively trigger apoptosis of senescent cells.* Eos SENOLYTIX, Inc., a biotechnology company developing first-in-class mitochondrial-targeted gerotherapeutic medicines, entered into a Merger Agreement with Pulmatrix, Inc. (Nasdaq: PULM) on March 26, 2026. The proposed merger is expected to close in the third quarter of 2026, subject to customary closing conditions. Upon completion, the combined company will operate under the new ticker symbol MTXL. Merger-associated financings are expected to support advancement of the combined company's pipeline through key clinical milestones.
  https://www.sec.gov/Archives/edgar/data/1574235/0001493152-26-027416.txt

## Citations
- 0001493152-26-027416 — https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&type=&dateb=&owner=include&count=40&search_text=000149315226027416