Monitor for the effective date of the S-4 and shareholder vote on the merger. The removal of Exhibit 99.9 suggests finalization of the registration statement; watch for the prospectus/proxy statement mailing and any material changes in the exchange ratio or financing terms.
Price Chart
Executive Summary
Pulmatrix filed Amendment No. 4 to its S-4 registration statement for the proposed merger with Eos SENOLYTIX, Inc. This is an exhibits-only filing to remove Exhibit 99.9; no new financial or business terms are disclosed. The merger agreement, dated March 26, 2026, contemplates Pulmatrix acquiring Eos SENOLYTIX via a reverse merger, with Pulmatrix to be renamed Eos SENOLYTIX, Inc. The filing is a routine procedural step with no material new information for investors.
Key Facts
- Amendment No. 4 to Form S-4 (File No. 333-297342) filed September 23, 2026, as an exhibits-only filing to remove Exhibit 99.9.
- Merger Agreement dated March 26, 2026, among Pulmatrix, PUOS Merger Sub, Inc., and Eos SENOLYTIX, Inc. (Exhibit 2.1).
- Post-merger, Pulmatrix will be renamed Eos SENOLYTIX, Inc., with new directors including Kevin Slawin, Frank McGuyer, Jerold Winograd, Ralph Mack, Brian Goldstein, Blair LaCorte, and Teofilo Raad.
- Retention Bonus Agreement dated September 16, 2026, between Peter Ludlum (Interim CEO/CFO) and Pulmatrix (Exhibit 10.37).
- No financial terms (exchange ratio, valuation, or deal size) are disclosed in this amendment.
Financial Impact
No financial figures disclosed in this filing.
Risk Factors
- Merger may not close if shareholder approval or regulatory conditions are not met.
- No financial terms disclosed; valuation and dilution for PULM shareholders remain unknown.
- Post-merger entity will be a different business (senolytics) with no current revenue from the combined operations.
Investment Themes
Documents Analyzed
This report is based on 4 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| S-4/A Filing (Primary) | 0001493152-26-043938 |
| Document: 0001493152-26-043938-index-headers.html | 0001493152-26-043938 |
| Document: 0001493152-26-043938-index.html | 0001493152-26-043938 |
| Document: 0001493152-26-043938.txt | 0001493152-26-043938 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 23, 2026 4d ago | EFFECT | $1.48 | awaiting T+5 | — | $1.46 (+1.35%) |
Oct 22, 2026 5d ago | 425 | $1.42 | awaiting T+5 | — | $1.46 (+2.82%) |
Oct 13, 2026 14d ago | 425 | $1.38 $1.43 | ▲ +3.62% | ▲ +4.77% | $1.46 (+5.80%) |
Oct 7, 2026 19d ago | DEFA14A | $1.53 $1.41 | ▼ −7.67% | ▼ −7.39% | $1.46 (−4.39%) |
Oct 2, 2026 24d ago | S-3/A | $1.48 $1.43 | ▲ +3.38% | ▲ +3.80% | $1.46 (+1.35%) |
Sep 28, 2026 29d ago | EFFECT | $1.59 $1.48 | ▲ +6.92% | ▲ +8.12% | $1.46 (+8.18%) |
Sep 25, 2026 4w ago | DEFM14A | $1.59 $1.48 | ▲ +6.92% | ▲ +8.12% | $1.46 (+8.18%) |
Sep 23, 2026 4w ago | S-4/A | $1.67 $1.54 | ▼ −7.78% | ▼ −7.37% | $1.46 (−12.57%) |
Sep 22, 2026 4w ago | 425 | $1.69 $1.52 | ▼ −9.79% | ▼ −9.12% | $1.46 (−13.35%) |
Sep 17, 2026 5w ago | S-4/A | $1.44 $1.61 | ▲ +11.81% | ▲ +10.54% | $1.46 (+1.39%) |
US Market Status
Subscribe to SecBot
Get Real-Time SEC Filing Intelligence
Comprehensive SEC filing analysis delivered the moment filings hit EDGAR. Sentiment scoring, impact analysis, and actionable insights for every material event.
Create a free account Live analysis, Telegram alerts, watchlists and the MCP server for subscribers