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AI brief of an SEC Form 8-K · Pulmatrix, Inc. (PULM)

Pulmatrix closes $1 million Series B preferred sale tied to planned Eos merger

Neutral Impact 3 of 5 financing Written later

Pulmatrix, Inc. closed a private placement of Series B Convertible Preferred Stock on April 16, 2026, with an affiliate of Eos SENOLYTIX, Inc. The company said the investment is part of its planned merger with Eos and was made as part of the signing of the definitive merger agreement. The gross proceeds of approximately $1 million are intended for working capital and general corporate purposes.

Key points

  • Closed on April 16, 2026; aggregate gross proceeds of approximately $1 million before offering expenses
  • Preferred stock convertible into common stock at $2.20 per share, exercisable from 90 days after issuance
  • Investment made with an affiliate of Eos SENOLYTIX, Inc. as part of the planned merger
  • Securities were issued under Section 4(a)(2) and Regulation D and are not registered

The filing

CompanyPulmatrix, Inc. (PULM)
Form8-K, current report
Filed with the SECApr 21, 2026, 8:00 AM ET
Accession number0001493152-26-018202

Items reported: 7.01 Regulation FD Disclosure8.01 Other Events

Read the filing on SEC.gov ↗

Written by AI on Nov 9, 2026, 8:38 AM ET, from this filing only. Written later: this filing was briefed after the fact, when past filings were added to the site, so the brief may be read with hindsight; the filing itself is the record of what was known on April 21, 2026.

Briefs are written by AI from the filing text and can contain mistakes — open the filing before acting on anything. Impact (1-5) and tone are the AI's reading of the filing for shareholders, not a price forecast. Not investment advice.