Monitor for a subsequent prospectus supplement or takedown notice, which would indicate an actual offering and trigger dilution. The shelf's effectiveness alone is a procedural step with no immediate capital event.
Price Chart
Executive Summary
Nautilus Biotechnology's shelf registration statement (S-3, File No. 333-298884) became effective on September 18, 2026. This allows the company to offer and sell securities (common stock, preferred stock, warrants, etc.) from time to time at its discretion, creating potential dilution overhang for existing shareholders.
Key Facts
- Effectiveness date: September 18, 2026.
- Registration statement on Form S-3 (File No. 333-298884) declared effective.
- Company was formerly known as ARYA Sciences Acquisition Corp III (de-SPAC).
- No specific offering size, pricing, or timing disclosed in this filing.
Financial Impact
Undisclosed — shelf registration enables future offerings of up to an unspecified amount; no immediate capital raise.
Risk Factors
- Potential future dilution if the company sells shares under the shelf.
- De-SPAC companies often use shelf registrations for at-the-market (ATM) offerings or PIPE backstops, which could pressure the stock.
Investment Themes
Documents Analyzed
This report is based on 3 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| EFFECT Filing (Primary) | 9999999995-26-003012 |
| Document: 9999999995-26-003012-index.html | 9999999995-26-003012 |
| Document: 9999999995-26-003012.txt | 9999999995-26-003012 |
Track record builds as more directional reports settle.
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Sep 21, 2026 5w ago | EFFECT | $0.9547 $2.63 | ▲ +175.48% | ▲ +176.39% | $2.44 (+155.58%) |
Sep 18, 2026 5w ago | 424B5 | $0.9547 $2.63 | ▼ −175.48% | ▼ −176.39% | $2.44 (−155.58%) |
Apr 28, 2026 25w ago | Press Release | $2.59 $2.43 | ▼ −6.18% | ▼ −11.65% | $2.44 (−5.79%) |
Apr 27, 2026 26w ago | 8-K | $2.59 $2.56 | ▼ −1.16% | ▼ −6.61% | $2.44 (−5.79%) |
Mar 18, 2026 31w ago | Press Release | $2.74 $3.13 | ▲ +14.05% | ▲ +8.00% | $2.44 (−10.95%) |
Feb 26, 2026 34w ago | 8-K | $2.42 $3.78 | ▲ +56.20% | ▲ +62.60% | $2.44 (+0.83%) |
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