Ultragenyx Pharmaceutical Inc. (RARE)

US — Healthcare Sector
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News

RARE Deadline: Rosen Law Firm Urges Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) Stockholders with Losses in Excess of $100K to Contact the Firm for Information About Their Rights
RARE
Published: April 03, 2026 by: Business Wire
Sentiment: Neutral

NEW YORK--(BUSINESS WIRE)--Rosen Law Firm, a global investor rights law firm, reminds investors about a class action lawsuit on behalf of purchasers of common stock of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) between August 3, 2023 and December 26, 2025. Ultragenyx describes itself as a “biopharmaceutical company focused on rare and ultrarare genetic disorders.” For more information, submit a form, email attorney Phillip Kim, or give us a call at 866-767-3653. The Allegations: Rosen Law Fi.

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image for news RARE Deadline: Rosen Law Firm Urges Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) Stockholders with Losses in Excess of $100K to Contact the Firm for Information About Their Rights
DEADLINE NEXT WEEK: Berger Montague Advises Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) Investors to Contact the Firm Before April 6, 2026
RARE
Published: April 03, 2026 by: PRNewsWire
Sentiment: Neutral

PHILADELPHIA, April 3, 2026 /PRNewswire/ -- National plaintiffs' law firm Berger Montague PC announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) ("Ultragenyx" or the "Company") on behalf of investors who purchased common shares of Ultragenyx during the period from August 3, 2023 through December 26, 2025 (the "Class Period"). Investor Deadline: Investors who purchased Ultragenyx securities during the Class Period may, no later than April 6, 2026 , seek to be appointed as a lead plaintiff representative of the class.

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image for news DEADLINE NEXT WEEK: Berger Montague Advises Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) Investors to Contact the Firm Before April 6, 2026
RARE FINAL DEADLINE: ROSEN, A LEADING LAW FIRM, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
RARE
Published: April 03, 2026 by: Newsfile Corp
Sentiment: Neutral

New York, New York--(Newsfile Corp. - April 3, 2026) - WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) between August 3, 2023 and December 26, 2025, inclusive (the "Class Period"), of the important April 6, 2026 lead plaintiff deadline. SO WHAT: If you purchased Ultragenyx common stock during the Class Period you may be entitled to compensation without payment of any out of pocket fees or costs through a contingency fee arrangement.

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image for news RARE FINAL DEADLINE: ROSEN, A LEADING LAW FIRM, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
RARE
Published: April 01, 2026 by: GlobeNewsWire
Sentiment: Neutral

New class action for Ultragenyx (RARE) urges investors to seek recovery for alleged securities fraud violations – lead plaintiff deadline of 4/6/2026.

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image for news Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
RARE
Published: March 31, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 31, 2026 (GLOBE NEWSWIRE) -- Pomerantz LLP announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or the “Company”) (NASDAQ: RARE). Such investors are advised to contact Danielle Peyton at [email protected] or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext. 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased.

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image for news INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
Ultragenyx Pharmaceutical Announces FDA Acceptance of UX016 IND
RARE
Published: March 31, 2026 by: Zacks Investment Research
Sentiment: Neutral

RARE's IND for UX016, a novel sialic acid prodrug targeting GNEM, a rare muscle disease, gets accepted by the FDA. The first-in-human study is slated for H2'26.

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image for news Ultragenyx Pharmaceutical Announces FDA Acceptance of UX016 IND
RARE FINAL DEADLINE: ROSEN, A HIGHLY RECOGNIZED LAW FIRM, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
RARE
Published: March 30, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 30, 2026 (GLOBE NEWSWIRE) -- WHY: New York, N.Y., March 30, 2026. Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), of the important April 6, 2026 lead plaintiff deadline.

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image for news RARE FINAL DEADLINE: ROSEN, A HIGHLY RECOGNIZED LAW FIRM, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
NASDAQ: RARE CLASS ACTION NOTICE: Berger Montague Encourages Ultragenyx Pharmaceutical Inc. (RARE) Investors to Inquire About a Securities Fraud Class Action
RARE
Published: March 30, 2026 by: Newsfile Corp
Sentiment: Neutral

Philadelphia, Pennsylvania--(Newsfile Corp. - March 30, 2026) - National plaintiffs' law firm Berger Montague PC announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) ("Ultragenyx" or the "Company") on behalf of investors who purchased Ultragenyx common stock during the period from August 3, 2023 through December 26, 2025 (the "Class Period"). Investor Deadline: Investors who purchased Ultragenyx common stock during the Class Period may, no later than April 6, 2026, seek to be appointed as a lead plaintiff representative of the class.

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image for news NASDAQ: RARE CLASS ACTION NOTICE: Berger Montague Encourages Ultragenyx Pharmaceutical Inc. (RARE) Investors to Inquire About a Securities Fraud Class Action
ULTRAGENYX DEADLINE: ROSEN, TOP-RANKED INVESTOR COUNSEL, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
RARE
Published: March 27, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 27, 2026 (GLOBE NEWSWIRE) -- WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), of the important April 6, 2026 lead plaintiff deadline.

Read More
image for news ULTRAGENYX DEADLINE: ROSEN, TOP-RANKED INVESTOR COUNSEL, Encourages Ultragenyx Pharmaceutical Inc. Investors with Losses in Excess of $100K to Secure Counsel Before Important April 6 Deadline in Securities Class Action - RARE
RARE Shareholder Alert: Ultragenyx Pharmaceutical Inc. Securities Class Action Lawsuit Investors With Losses May Join — The Gross Law Firm
RARE
Published: March 27, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 27, 2026 (GLOBE NEWSWIRE) -- The Gross Law Firm issues the following notice to shareholders of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE).

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image for news RARE Shareholder Alert: Ultragenyx Pharmaceutical Inc. Securities Class Action Lawsuit Investors With Losses May Join — The Gross Law Firm
RARE INVESTOR ALERT: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
RARE
Published: March 27, 2026 by: Newsfile Corp
Sentiment: Neutral

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Ultragenyx To Contact Him Directly To Discuss Their Options If you purchased or acquired securities in Ultragenyx between August 3, 2023 and December 26, 2025 and would like to discuss your legal rights, call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310). [You may also click here for additional information] New York, New York--(Newsfile Corp. - March 27, 2026) - Faruqi & Faruqi, LLP, a leading national securities law firm, is investigating potential claims against Ultragenyx Pharmaceutical Inc ("Ultragenyx" …

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image for news RARE INVESTOR ALERT: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
RARE
Published: March 25, 2026 by: GlobeNewsWire
Sentiment: Neutral

New class action for Ultragenyx (RARE) urges investors to seek recovery for alleged securities fraud violations – lead plaintiff deadline of 4/6/2026.

Read More
image for news Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
RARE
Published: March 24, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 24, 2026 (GLOBE NEWSWIRE) -- Pomerantz LLP announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or the “Company”) (NASDAQ: RARE). Such investors are advised to contact Danielle Peyton at [email protected] or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext. 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased.

Read More
image for news INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
RARE SHAREHOLDER REMINDER: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
RARE
Published: March 24, 2026 by: GlobeNewsWire
Sentiment: Neutral

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Ultragenyx To Contact Him Directly To Discuss Their Options

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image for news RARE SHAREHOLDER REMINDER: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
INVESTOR DEADLINE: Ultragenyx Pharmaceutical Inc. (RARE) Investors with Substantial Losses Have Opportunity to Lead Securities Class Action Lawsuit - RGRD Law
RARE
Published: March 23, 2026 by: GlobeNewsWire
Sentiment: Neutral

SAN DIEGO, March 23, 2026 (GLOBE NEWSWIRE) -- The law firm of Robbins Geller Rudman & Dowd LLP announces purchasers or acquirers of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) common stock between August 3, 2023 and December 26, 2025, all dates inclusive (the “Class Period”), have until Monday, April 6, 2026 to seek appointment as lead plaintiff of the Ultragenyx class action lawsuit. Captioned Bailey v.

Read More
image for news INVESTOR DEADLINE: Ultragenyx Pharmaceutical Inc. (RARE) Investors with Substantial Losses Have Opportunity to Lead Securities Class Action Lawsuit - RGRD Law
RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
RARE
Published: March 23, 2026 by: GlobeNewsWire
Sentiment: Neutral

LOS ANGELES, March 23, 2026 (GLOBE NEWSWIRE) -- The Schall Law Firm , a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or “the Company”) (NASDAQ: RARE) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission. Investors who purchased the Company's securities between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), are encouraged to contact the firm before April 6, 2026.

Read More
image for news RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
RARE INVESTOR NOTICE: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
RARE
Published: March 20, 2026 by: Newsfile Corp
Sentiment: Neutral

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Ultragenyx To Contact Him Directly To Discuss Their Options If you purchased or acquired securities in Ultragenyx between August 3, 2023 and December 26, 2025 and would like to discuss your legal rights, call Faruqi & Faruqi partner Josh Wilson directly at 877-247-4292 or 212-983-9330 (Ext. 1310). [You may also click here for additional information] New York, New York--(Newsfile Corp. - March 20, 2026) - Faruqi & Faruqi, LLP, a leading national securities law firm, is investigating potential claims against Ultragenyx Pharmaceutical Inc ("Ultragenyx" …

Read More
image for news RARE INVESTOR NOTICE: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
RARE
Published: March 19, 2026 by: GlobeNewsWire
Sentiment: Neutral

LOS ANGELES, March 19, 2026 (GLOBE NEWSWIRE) -- The Schall Law Firm , a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or “the Company”) (NASDAQ: RARE) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission. Investors who purchased the Company's securities between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), are encouraged to contact the firm before April 6, 2026.

Read More
image for news RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines - RARE
RARE
Published: March 19, 2026 by: PRNewsWire
Sentiment: Neutral

NEW YORK, March 19, 2026 /PRNewswire/ -- Pomerantz LLP announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. ("Ultragenyx" or the "Company") (NASDAQ: RARE). Such investors are advised to contact Danielle Peyton at [email protected] or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext.

Read More
image for news INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines - RARE
RARE CLASS ACTION NOTICE: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
RARE
Published: March 18, 2026 by: GlobeNewsWire
Sentiment: Neutral

Faruqi & Faruqi, LLP Securities Litigation Partner James (Josh) Wilson Encourages Investors Who Suffered Losses In Ultragenyx To Contact Him Directly To Discuss Their Options

Read More
image for news RARE CLASS ACTION NOTICE: Faruqi & Faruqi, LLP Reminds Ultragenyx Pharmaceutical (RARE) Investors of Securities Class Action Deadline on April 6, 2026
Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
RARE
Published: March 18, 2026 by: GlobeNewsWire
Sentiment: Neutral

New class action for Ultragenyx (RARE) urges investors to seek recovery for alleged securities fraud violations – lead plaintiff deadline of 4/6/2026.

Read More
image for news Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
RARE
Published: March 06, 2026 by: GlobeNewsWire
Sentiment: Neutral

LOS ANGELES, March 06, 2026 (GLOBE NEWSWIRE) -- The Schall Law Firm , a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or “the Company”) (NASDAQ: RARE) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission. Investors who purchased the Company's securities between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), are encouraged to contact the firm before April 6, 2026.

Read More
image for news RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
Robbins LLP Urges RARE Stockholders to Contact the Firm for Information About the Class Action Against Ultragenyx Pharmaceutical Inc.
RARE
Published: March 04, 2026 by: GlobeNewsWire
Sentiment: Neutral

SAN DIEGO, March 04, 2026 (GLOBE NEWSWIRE) -- Robbins LLP reminds stockholders that a class action was filed on behalf of all investors who purchased or otherwise acquired Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) common stock between August 3, 2023 and December 26, 2025. Ultragenyx is a biopharmaceutical company focused on rare and ultrarare genetic disorders.

Read More
image for news Robbins LLP Urges RARE Stockholders to Contact the Firm for Information About the Class Action Against Ultragenyx Pharmaceutical Inc.
Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
RARE
Published: March 04, 2026 by: GlobeNewsWire
Sentiment: Neutral

New class action for Ultragenyx (RARE) urges investors to seek recovery for alleged securities fraud violations – lead plaintiff deadline of 4/6/2026.

Read More
image for news Bronstein, Gewirtz & Grossman LLC Urges Ultragenyx Pharmaceutical Inc. Investors to Act: Class Action Filed Alleging Investor Harm
ROSEN, GLOBAL INVESTOR COUNSEL, Encourages Ultragenyx Pharmaceutical Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - RARE
RARE
Published: March 03, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 03, 2026 (GLOBE NEWSWIRE) -- WHY: Rosen Law Firm, a global investor rights law firm, reminds purchasers of common stock of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), of the important April 6, 2026 lead plaintiff deadline.

Read More
image for news ROSEN, GLOBAL INVESTOR COUNSEL, Encourages Ultragenyx Pharmaceutical Inc. Investors to Secure Counsel Before Important Deadline in Securities Class Action - RARE
INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
RARE
Published: March 03, 2026 by: GlobeNewsWire
Sentiment: Neutral

NEW YORK, March 03, 2026 (GLOBE NEWSWIRE) -- Pomerantz LLP announces that a class action lawsuit has been filed against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or the “Company”) (NASDAQ: RARE). Such investors are advised to contact Danielle Peyton at [email protected] or 646-581-9980, (or 888.4-POMLAW), toll-free, Ext. 7980. Those who inquire by e-mail are encouraged to include their mailing address, telephone number, and the number of shares purchased.

Read More
image for news INVESTOR ALERT: Pomerantz Law Firm Reminds Investors with Losses on their Investment in Ultragenyx Pharmaceutical Inc. of Class Action Lawsuit and Upcoming Deadlines – RARE
Kessler Topaz Meltzer & Check, LLP - Ultragenyx Pharmaceutical Inc. (RARE) Securities Fraud Class Action Lawsuit Filed; March 13, 2026, Lead Plaintiff Deadline
RARE
Published: March 03, 2026 by: GlobeNewsWire
Sentiment: Neutral

Did you buy RARE common stock between August 3, 2023, and December 26, 2025? Affected Ultragenyx Pharmaceutical Inc. Investor Summary Who: Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) What: Securities fraud class action lawsuit filed Class Period: August 3, 2023, through December 26, 2025 Deadline to Seek Lead Plaintiff Status: April 6, 2026 Key Lawsuit Allegations: Material misstatements and/or omissions concerning the company's drug, setrusumab Investor Action: Contact Kessler Topaz Meltzer & Check, LLP (www.ktmc.com) for recovery options at no cost to investor RADNOR, Pa.

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image for news Kessler Topaz Meltzer & Check, LLP - Ultragenyx Pharmaceutical Inc. (RARE) Securities Fraud Class Action Lawsuit Filed; March 13, 2026, Lead Plaintiff Deadline
RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
RARE
Published: March 03, 2026 by: GlobeNewsWire
Sentiment: Neutral

LOS ANGELES, March 03, 2026 (GLOBE NEWSWIRE) -- The Schall Law Firm , a national shareholder rights litigation firm, reminds investors of a class action lawsuit against Ultragenyx Pharmaceutical Inc. (“Ultragenyx” or “the Company”) (NASDAQ: RARE) for violations of §§10(b) and 20(a) of the Securities Exchange Act of 1934 and Rule 10b-5 promulgated thereunder by the U.S. Securities and Exchange Commission. Investors who purchased the Company's securities between August 3, 2023 and December 26, 2025, inclusive (the “Class Period”), are encouraged to contact the firm before April 6, 2026.

Read More
image for news RARE Investors Have Opportunity to Lead Ultragenyx Pharmaceutical Inc. Securities Fraud Lawsuit with the Schall Law Firm
Ultragenyx Pharmaceutical Inc. (RARE) Class Action Lawsuit Seeks Recovery for Investors; April 6, 2026, Deadline - Contact Kessler Topaz Meltzer & Check, LLP
RARE
Published: March 02, 2026 by: PRNewsWire
Sentiment: Neutral

Did you buy RARE common stock between August 3, 2023, and December 26, 2025? Affected Ultragenyx Pharmaceutical Inc. Investor Summary Who: Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) What: Securities fraud class action lawsuit filed Class Period: August 3, 2023, through December 26, 2025 Deadline to Seek Lead Plaintiff Status: April 6, 2026 Key Lawsuit Allegations: Material misstatements and/or omissions concerning the company's drug, setrusumab Investor Action: Contact Kessler Topaz Meltzer & Check, LLP (www.ktmc.com) for recovery options at no cost to investor RADNOR, Pa.

Read More
image for news Ultragenyx Pharmaceutical Inc. (RARE) Class Action Lawsuit Seeks Recovery for Investors; April 6, 2026, Deadline - Contact Kessler Topaz Meltzer & Check, LLP
Ultragenyx Pharmaceutical Inc. Investors with Substantial Losses Have Opportunity to Lead Class Action Lawsuit - RGRD Law
RARE
Published: March 02, 2026 by: GlobeNewsWire
Sentiment: Neutral

SAN DIEGO, March 02, 2026 (GLOBE NEWSWIRE) -- Robbins Geller Rudman & Dowd LLP announces purchasers or acquirers of Ultragenyx Pharmaceutical Inc. (NASDAQ: RARE) common stock between August 3, 2023 and December 26, 2025, both dates inclusive (the “Class Period”), have until Monday, April 6, 2026 to seek appointment as lead plaintiff of the Ultragenyx class action lawsuit. Captioned Bailey v.

Read More
image for news Ultragenyx Pharmaceutical Inc. Investors with Substantial Losses Have Opportunity to Lead Class Action Lawsuit - RGRD Law

About Ultragenyx Pharmaceutical Inc. (RARE)

  • IPO Date 2014-01-31
  • Website https://www.ultragenyx.com
  • Industry Biotechnology
  • CEO Emil D. Kakkis
  • Employees 1294

Ultragenyx Pharmaceutical Inc., a biopharmaceutical company, focuses on the identification, acquisition, development, and commercialization of novel products for the treatment of rare and ultra-rare genetic diseases in North America, Europe, and internationally. Its biologic products include Crysvita (burosumab), an antibody targeting fibroblast growth factor 23 for the treatment of X-linked hypophosphatemia, as well as tumor-induced osteomalacia; Mepsevii, an enzyme replacement therapy for the treatment of children and adults with Mucopolysaccharidosis VII; Dojolvi for treating long-chain fatty acid oxidation disorders; and Evkeeza (evinacumab) for the treatment of homozygous familial hypercholesterolemia. The company's products candidatures include DTX401, an adeno-associated virus 8 (AAV8) gene therapy clinical candidate for the treatment of patients with glycogen storage disease type Ia; DTX301, an AAV8 gene therapy for the treatment of patients with ornithine transcarbamylase; UX143, a human monoclonal antibody for the treatment of osteogenesis imperfecta; GTX-102, an antisense oligonucleotide for the treatment of Angelman syndrome; UX701, for the treatment of Wilson disease; and UX053 for the treatment of glycogen storage disease type III. Ultragenyx Pharmaceutical Inc. has collaboration and license agreement with Kyowa Kirin Co., Ltd.; Saint Louis University; Baylor Research Institute; REGENXBIO Inc.; Bayer Healthcare LLC; GeneTx; Mereo; University of Pennsylvania; Arcturus Therapeutics Holdings Inc., Solid Biosciences Inc.; and Daiichi Sankyo Co., Ltd. Ultragenyx Pharmaceutical Inc. was incorporated in 2010 and is headquartered in Novato, California.