Traders should expect a sharp decline in CPRX shares upon delisting. The stock will likely move to the OTC markets with significantly reduced liquidity. Any remaining positions should be evaluated for exit before the delisting takes full effect. Monitor for any subsequent going-private transaction or bankruptcy filing.
Price Chart
Executive Summary
Nasdaq filed a Form 25-NSE to delist Catalyst Pharmaceuticals' common stock under Rule 12d2-2(a)(3), effective immediately on July 15, 2026. This is a mandatory removal initiated by the exchange, not a voluntary delisting, and represents a severe negative event for a $3.9B market-cap company.
Key Facts
- Nasdaq Stock Market LLC filed Form 25-NSE to remove Catalyst Pharmaceuticals' common stock from listing and registration.
- The delisting is under 17 CFR 240.12d2-2(a)(3), which covers securities that have been redeemed, retired, or matured — but here it is an exchange-initiated removal.
- The filing was made effective on July 15, 2026.
- Catalyst Pharmaceuticals has a market cap of approximately $3.9B, making this a significant event.
Financial Impact
Delisting from Nasdaq — loss of exchange listing, likely severe price decline, reduced liquidity, and potential forced selling by institutional holders.
Risk Factors
- Complete loss of exchange listing and trading halts.
- Forced selling by institutional investors who cannot hold OTC stocks.
- Potential default on debt covenants tied to exchange listing.
- Risk of further regulatory or legal actions.
Market Snapshot
Investment Themes
Documents Analyzed
This report is based on 8 SEC documents filed with EDGAR.
| Document | Accession Number |
|---|---|
| 25-NSE Filing (CPRX) — Batch item 1 | 0001354457-26-000694 |
| Document: 0001354457-26-000694-index-headers.html | 0001354457-26-000694 |
| Document: 0001354457-26-000694-index.html | 0001354457-26-000694 |
| Document: 0001354457-26-000694.txt | 0001354457-26-000694 |
| 25-NSE Filing (CPRX) — Batch item 5 | 0001354457-26-000694 |
| Document: 0001354457-26-000694-index-headers.html | 0001354457-26-000694 |
| Document: 0001354457-26-000694-index.html | 0001354457-26-000694 |
| Document: 0001354457-26-000694.txt | 0001354457-26-000694 |
Filters
| Type | Now | ||||
|---|---|---|---|---|---|
Aug 22, 2026 5w ago | Institutional Cluster | — | awaiting T+5 | — | — |
Jul 24, 2026 9w ago | 15-12G | $31.49 awaiting T+5 | awaiting T+5 | — | — |
Jul 17, 2026 11w ago | EFFECT | $31.49 $31.49 | · 0.00% | ▼ −0.59% | — |
Jul 15, 2026 11w ago | 25-NSE | $31.49 $31.49 | · 0.00% | ▼ −0.98% | — |
Jul 8, 2026 12w ago | 8-K | $31.47 $31.49 | ▲ +0.06% | ▲ +0.20% | — |
Jun 30, 2026 13w ago | DEFA14A | $31.44 $31.49 | ▲ +0.16% | ▼ −0.10% | — |
Jun 30, 2026 13w ago | 8-K | $31.44 $31.49 | ▲ +0.16% | ▼ −0.10% | — |
May 28, 2026 18w ago | PREM14A | $31.23 $31.28 | ▲ +0.16% | ▲ +0.45% | — |
May 12, 2026 20w ago | DEFA14A | $31.14 $31.23 | ▲ +0.29% | ▲ +0.21% | — |
May 11, 2026 20w ago | Press Release | $31.14 $31.23 | ▼ −0.29% | ▼ −0.21% | — |
US Market Status
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