---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-26-304984"
form_type: "8-K"
ticker: "CPRX"
cik: "0001369568"
company_name: "CATALYST PHARMACEUTICALS, INC."
filed_at: "2026-07-15T21:36:30+00:00"
generated_at: "2026-07-16T10:05:38.415890+00:00"
event_type: "m_and_a"
sentiment: "neutral"
materiality_score: 1.0
calibrated_materiality_score: 1.0
confidence: "high"
source: SEC EDGAR
---

# Catalyst Pharmaceuticals completes merger with Angelini Pharma; shareholders receive $31.50/share

## Summary
- Merger closed July 15, 2026; each share converted to $31.50 cash, no interest.
- Stock to be delisted from Nasdaq; trading suspended July 16, 2026.
- All directors resigned; new directors from Angelini (Sergio Marullo di Condojanni, Massimo Marin, Enrica Dogali) appointed.
- Certificate of incorporation and bylaws amended and restated.
- Company becomes wholly owned subsidiary of Angelini Pharma S.p.A.

## SEC filing metadata
- accession: 0001193125-26-304984
- form_type: 8-K
- ticker: CPRX
- cik: 0001369568
- company_name: CATALYST PHARMACEUTICALS, INC.
- filed_at: 2026-07-15T21:36:30+00:00
- event_type: m_and_a
- sentiment: neutral
- materiality_score: 1.0
- calibrated_materiality_score: 1.0
- confidence: high
- sec_items: 2.01, 3.01, 3.03, 5.01, 5.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/d159184d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-26-304984
- JSON: https://secwatch.observer/filing/0001193125-26-304984.json
- Plain text: https://secwatch.observer/filing/0001193125-26-304984.txt

## Key facts
- Executive change
  David S. Tierney, M.D. resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Enrica Dogali was appointed as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: appointed
  - Role: Director
  source text: the directors of Merger Sub immediately prior to the Effective Time (Sergio Marullo di Condojanni; Massimo Marin; Enrica Dogali) became the directors of the Surviving Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Daniel J. Curran, M.D. resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Massimo Marin was appointed as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: appointed
  - Role: Director
  source text: the directors of Merger Sub immediately prior to the Effective Time (Sergio Marullo di Condojanni; Massimo Marin; Enrica Dogali) became the directors of the Surviving Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Molly Harper resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Tamar Thompson resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Patrick J. McEnany resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Donald A. Denkhaus resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Sergio Marullo di Condojanni was appointed as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: appointed
  - Role: Director
  source text: the directors of Merger Sub immediately prior to the Effective Time (Sergio Marullo di Condojanni; Massimo Marin; Enrica Dogali) became the directors of the Surviving Corporation.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm
- Executive change
  Richard J. Daly resigned as Director at CATALYST PHARMACEUTICALS, INC..
  - Action: resigned
  - Role: Director
  source text: each of the directors of the Company (Patrick J. McEnany; Richard J. Daly; Daniel J. Curran, M.D.; Donald A. Denkhaus; Molly Harper; Tamar Thompson; and David S. Tierney, M.D.) resigned and ceased to be directors of the board of directors of the Company and members of any committee thereof, as applicable.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1369568/000119312526304984/0001193125-26-304984-index.htm

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.