<div id="readability-page-1"><article>CORAL GABLES, Fla., March 06, 2026 (GLOBE NEWSWIRE) -- Catalyst Pharmaceuticals, Inc. (&#34;Catalyst&#34;) (Nasdaq: CPRX), a commercial-stage biopharmaceutical company focused on in-licensing, developing, and commercializing novel medicines for patients living with rare and difficult-to-treat diseases, today announced that the Company will showcase real‑world findings in Duchenne muscular dystrophy (DMD) through multiple poster presentations at the 2026 MDA Clinical &amp; Scientific Conference in Orlando, Florida. Catalyst will also sponsor a vamorolone-focused MDA Industry Forum with Santhera Pharmaceuticals. “The MDA meeting is a key opportunity to highlight the expanding real‑world evidence shaping care for the Duchenne community,” said Will Andrews, MD, Chief Medical Officer of Catalyst. “Through our poster presentations and our sponsored symposium on long‑term evidence generation, we’re contributing clinical insights that help clarify AGAMREE®’s profile and its role in patient care. Our commitment is to advance rigorous, meaningful research that moves the field forward for patients and their families.” The poster presentations will focus on real-world analysis of vamorolone in patients living with DMD: Poster Presentations: Abstract Title: Real-world analysis of concomitant cardiac medication use with the novel corticosteroid vamorolone in patients with Duchenne muscular dystrophy (DMD) Authors: Linda Cripe, MD, Nationwide Children's Hospital, Steven Woods, PharmD, Catalyst, Katherine Habkouk, PharmD, AnovoRx Specialty Pharmacy, Regina Grebla, PhD, Northeast Epi, LLC Session Name: Poster Session Topic: Clinical Management Poster Number: 74 S Date of Presentation: Sunday, March 8, 2026, 6:00 PM–8:00 PM ET Abstract Title: Association Between Glucocorticoid Treatment Duration and Health Care Resource Utilization in Duchenne Muscular Dystrophy: A Real-World Analysis. Authors: Steven Woods, PharmD, Catalyst Pharmaceuticals, Bridget McGowan, MD, Ann and Robert H. Lurie Children's Hospital of Chicago, Ashley Martin, PhD, BluePath Solutions, Alexa Gordon, MS, BluePath Solutions, Sana Mirza, MPH, BluePath Solutions, Paula Alvarez, MBA, MS, Rph, Critical Intelligence Consulting Session Name: Poster Session Topic: Other Poster Number: 75 S Date of Presentation: Sunday, March 8, 2026, 6:00 PM–8:00 PM ET Abstract Title: Glucocorticoid Use and Delayed Respiratory Decline in Duchenne Muscular Dystrophy Patients: A Real-World Analysis Authors: Steven Woods, PharmD, Catalyst Pharmaceuticals, Bridget McGowan, MD, Ann and Robert H. Lurie Children's Hospital of Chicago, Ashley Martin, PhD, BluePath Solutions, Alexa Gordon, MS, BluePath Solutions, Sana Mirza, MPH, BluePath Solutions, Paula Alvarez, MBA, MS, Rph, Critical Intelligence Consulting, Oscar Mayer, MD, The Children's Hospital of Philadelphia Session Name: Poster Session Topic: Other Poster Number: 76S Date of Presentation: Sunday, March 8, 2026, 6:00 PM–8:00 PM ET MDA Industry Forum will highlight the latest insights from clinical leaders advancing our understanding of DMD: Symposium: Title: MDA Industry Forum Sponsored by Catalyst Pharmaceuticals in Conjunction With Santhera Pharmaceuticals Speakers: <ul type="disc"><li>Dr. Craig McDonald, MD, Chair, Department of Physical Medicine &amp; Rehabilitation Professor, Departments of Pediatrics and Physical Medicine &amp; Rehabilitation UC Davis Health, Sacramento, CA</li><li>Dr. Leanne Ward, MD, Professor of Pediatrics, University of Ottawa, Ottawa, ON</li></ul> Date of Presentation: Tuesday, March 10, 2026, 12:00 PM-1:30 PM ET Location: Key Largo Room, The Hilton Orlando About Catalyst Pharmaceuticals, Inc. Catalyst Pharmaceuticals, Inc. (Nasdaq: CPRX) is a biopharmaceutical company committed to improving the lives of patients with rare diseases. With a proven track record of bringing life-changing treatments to the market, we focus on in-licensing, commercializing, and developing innovative therapies. Guided by our deep commitment to patient care, we prioritize accessibility, ensuring patients receive the care they need through a comprehensive suite of support services designed to provide seamless access and ongoing assistance. Catalyst maintains a well-established U.S. presence, which remains the cornerstone of our commercial strategy, while continuously evaluating strategic opportunities to expand our global footprint. Catalyst, headquartered in Coral Gables, Fla., has been recognized by Forbes as one of America’s Most Successful Company in 2023, 2024, and 2025, and on the 2025 Deloitte Technology Fast 500™ list as one of North America’s Fastest-Growing Companies. For more information, please visit Catalyst's website at www.catalystpharma.com. Forward-Looking Statements This press release contains forward-looking statements, as that term is defined in the Private Securities Litigation Reform Act of 1995. Forward-looking statements involve known and unknown risks and uncertainties, which may cause Catalyst's actual results in future periods to differ materially from forecasted results. A number of factors described in Catalyst's Annual Report on Form 10-K for the 2025 fiscal year and its subsequent filings with the U.S. Securities and Exchange Commission (“SEC”), could adversely affect Catalyst. Copies of Catalyst's filings with the SEC are available from the SEC, may be found on Catalyst's website, or may be obtained upon request from Catalyst. Catalyst does not undertake any obligation to update the information contained herein, which speaks only as of this date. Contact Information: Investor Contact Melissa Kendis, Catalyst Pharmaceuticals, Inc. (305) 420-3200 IR@catalystpharma.com Media Contact Ignacio Guerrero-Ros, Ph.D., Russo Partners, LLC (646) 249-6817 Ignacio.Guerrero-Ros@russopartnersllc.com <img src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RZMk56STVOaU0zTkRjd056ZzNJekl3TVRrME9URT0?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://www.globenewswire.com/newsroom/ti/query-bmY9T1RZMk56STVOaU0zTkRjd056ZzNJekl3TVRrME9URT0"/> <img src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/NGJjYzA0ZGYtYTlkYS00OTc3LTgzZDktZDk0NjI0MmM4ZTM5LTEwMzEwMzEtMjAyNi0wMy0wNi1lbg==/tiny/Catalyst-Pharmaceuticals-Inc-.png?x-oss-process=image/auto-orient,1/interlace,1/resize,w_1440,h_1440/quality,q_95/format,jpg" width="1" height="1" original-src="https://imageproxy.pbkrs.com/https://ml.globenewswire.com/media/NGJjYzA0ZGYtYTlkYS00OTc3LTgzZDktZDk0NjI0MmM4ZTM5LTEwMzEwMzEtMjAyNi0wMy0wNi1lbg==/tiny/Catalyst-Pharmaceuticals-Inc-.png"/></article></div>

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Catalyst Pharmaceuticals, Inc. (Nasdaq: CPRX) will present real-world findings on Duchenne muscular dystrophy (DMD) at the 2026 MDA Clinical & Scientific Conference in Orlando, Florida. The company will showcase multiple poster presentations and sponsor a vamorolone-focused symposium in collaboration with Santhera Pharmaceuticals. Key topics include the analysis of cardiac medication use and glucocorticoid treatment duration in DMD patients. The event aims to enhance understanding and care for the Duchenne community, highlighting Catalyst's commitment to advancing research and patient care.

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Catalyst Pharmaceuticals to Showcase Real‑World Findings in Duchenne Muscular Dystrophy and Host Vamorolone-Focused Symposium at the 2026 MDA Clinical & Scientific Conference | CPRX Stock News