The S-4 effectiveness signals that Passage BIO is moving forward with a merger or exchange transaction. Monitor for the definitive proxy/prospectus or transaction announcement, which will reveal the deal structure, valuation, and potential dilution for existing shareholders.
Price Chart
Executive Summary
Passage BIO's registration statement on Form S-4 (File No. 333-297601) was declared effective by the SEC on October 9, 2026. This allows the company to proceed with the securities transaction covered by the S-4, typically a merger or business combination. The effectiveness removes a key regulatory hurdle but does not disclose the size or terms of the offering.
Key Facts
- Effectiveness date: October 9, 2026
- Registration statement type: S-4 (typically used for business combinations or exchange offers)
- SEC File Number: 333-297601
- No offering size, pricing, or terms disclosed in the EFFECT notice
Financial Impact
Undisclosed — no dollar amounts provided in the filing
Risk Factors
- No financial terms disclosed — the transaction could be dilutive to current shareholders
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| EFFECT Filing (Primary) | 9999999995-26-003198 |
| Document: 9999999995-26-003198-index.html | 9999999995-26-003198 |
| Document: 9999999995-26-003198.txt | 9999999995-26-003198 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Oct 13, 2026 14d ago | EFFECT | $3.64 | awaiting T+20 | — | $3.36 (−7.72%) |
Oct 8, 2026 18d ago | S-4/A | $3.69 | awaiting T+20 | — | $3.36 (+8.97%) |
Oct 5, 2026 21d ago | S-4/A | $4.08 | awaiting T+20 | — | $3.36 (−17.67%) |
Sep 21, 2026 5w ago | S-4/A | $4.95 $3.60 | ▼ −27.27% | ▼ −26.71% | $3.36 (−32.14%) |
Sep 2, 2026 7w ago | S-4/A / 425 | $4.75 $4.12 | ▲ +13.26% | ▲ +12.08% | $3.36 (+29.28%) |
Sep 2, 2026 7w ago | 8-K | $4.75 $4.12 | ▼ −13.26% | ▼ −12.08% | $3.36 (−29.28%) |
Jun 24, 2026 17w ago | 425 | $4.33 $4.90 | ▼ −13.16% | ▼ −12.64% | $3.36 (+22.42%) |
Jun 24, 2026 17w ago | 425 | $4.33 $4.90 | ▼ −13.16% | ▼ −12.64% | $3.36 (+22.42%) |
Jun 24, 2026 17w ago | 8-K | $4.33 $4.90 | ▼ −13.16% | ▼ −12.64% | $3.36 (+22.42%) |
May 27, 2026 21w ago | 8-K | $5.71 $4.70 | ▲ +17.69% | ▲ +14.54% | $3.36 (+41.17%) |
US Market Status
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