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Ultragenyx Pharmaceutical

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uuid0000dvt

Namestring
Ultragenyx Pharmaceutical
Legal namestring
Ultragenyx Pharmaceutical Inc.
Websiteurl
ultragenyx.com
Company typeenum
Public
Founded yearint
2010
Operating statusenum
Operating
Ownership categoryenum
Headcount rangeband
1,001–5,000
akta.pro rankint
HeadquartersNovato, United States
HQ citystring
Novato
HQ countrystring
United States
HQ regionstring
North America
Markets served

Serves global market

Offices23 records

Each record includes

City, Country, Type, Description, Source

Keyword5 values
rare disease therapeutics, gene therapy development, biopharmaceutical products, enzyme replacement therapy, AAV gene therapy
Industry4 codes
1Genetic & Genomic Rare Disease Therapeutics
CodeHLAIAIAAPrimaryYes
2Gene Therapy for Rare/Monogenic Diseases
CodeHLAAACAEPrimaryNo
3Rare Pediatric & Congenital Disorder Therapies
CodeHLAIAIANPrimaryNo
4Rare Neurology & Neurodegenerative Disorder Therapies
CodeHLAIAIADPrimaryNo
NAICS code3 codes
  • Biological Product (except Diagnostic) Manufacturing325414
  • Pharmaceutical and Medicine Manufacturing3254
  • Research and Development in Biotechnology (except Nanobiotechnology)541714
SIC code2 codes
  • Biological Products, (No Disgnostic Substances)2836
  • Pharmaceutical Preparations2834
Product category
Rare Disease Biopharmaceuticals
GTM motion1 record

Each record includes

Type, Description, Source

Revenue model3 records
1Product Sales - Commercialized Therapies
TypeOne Time License
Description

Ultragenyx generates revenue from four approved products: Crysvita (burosumab), Dojolvi (triheptanoin), and additional rare disease therapies. The company reported Q1 2026 revenue of $136 million and reaffirmed 2026 revenue guidance of $730-760 million. Crysvita has surpassed $4 billion in US and Canada sales since launch.

seekingalpha.com
2Royalty Revenue
TypeLicensing Royalties
Description

The company receives royalty payments from partnered products including Kyowa Kirin's collaboration on Crysvita. In November 2025, Ultragenyx sold a 25% royalty interest on Crysvita to OMERS for $400 million, with additional royalties starting January 2028.

openpr.com
3Gene Therapy Development
TypeLicensing Royalties
Description

Revenue generated from development and potential approval of gene therapy candidates including UX111 (Sanfilippo syndrome), DTX401 (GSDIa), and DTX301 (OTC deficiency), with upcoming PDUFA dates in 2026.

ir.ultragenyx.com
Marketing channels5 records

Each record includes

Title, Type, Stage, Description, Source

Distribution channels4 records

Each record includes

Title, Type, Scope, Target buyer, Description, Source

Cost components5 values
Technology or R&D, Personnel, Operations, Supply Chain, Marketing or Sales
GTM typeB2B
B2B
Offering typeHardware or Manufacturing
Hardware or Manufacturing
Core offering1 text field

Ultragenyx Pharmaceutical develops and commercializes biologic and small-molecule therapeutics for rare and ultra-rare genetic diseases. The company's approved and clinical-stage portfolio spans multiple drug modalities, including AAV gene therapies, antisense oligonucleotides, monoclonal antibodies, enzyme replacement therapies, and substrate replacement therapies, sold globally through specialty pharmacies, hospitals, and regional commercial operations.

Differentiator
Functional benefit
Problem solved
Quantifiable outcome1 of 5 values shown
  • 18% reduction in 24-hour plasma ammonia levels (p=0.018) in OTC deficiency patients treated with DTX301 gene therapy
+4 more records
Product overview1 text field

Ultragenyx Pharmaceutical is a biopharmaceutical company focused on developing and delivering treatments for rare and ultrarare genetic diseases. The company has a diversified pipeline spanning multiple drug modalities including gene therapies, monoclonal antibodies, and antisense oligonucleotides. Approved products include Crysvita (burosumab) for XLH and TIO. Key pipeline candidates include: gene therapies DTX401 (GSDIa, PDUFA Aug 2026), DTX301 (OTC deficiency), UX111 (MPS IIIA, PDUFA Sep 2026), and UX701 (Wilson disease); GTX-102 for Angelman syndrome (Phase 3); UX016 for GNE myopathy (Phase 1/2); and setrusumab for osteogenesis imperfecta. The company operates in multiple countries globally and is working toward profitability by 2027.

Product and service10 records
1Crysvita (Burosumab)
CategoryApproved biopharmaceutical product
Description

Crysvita is an approved monoclonal antibody therapy for X-linked hypophosphatemia (XLH) and tumor-induced osteomalacia (TIO), rare bone diseases. Developed in collaboration with Kyowa Kirin, it has surpassed $4 billion in US and Canada sales since launch, with a 25% royalty interest sold to OMERS for $400 million in November 2025.

2Dojolvi (Triheptanoin)
CategoryApproved biopharmaceutical product
Description

Dojolvi (triheptanoin) is an approved Ultragenyx therapy for a rare metabolic disorder, part of the company's four-product commercial portfolio contributing to 2026 revenue guidance of $730–760 million.

3GTX-102
CategoryClinical-stage pipeline therapy
Description

GTX-102 is an antisense oligonucleotide therapy being developed for Angelman syndrome, a rare neurological disorder with no currently approved therapies. Phase 3 Aspire trial is ongoing with primary endpoint of cognition. Acquired through the July 2022 GeneTx Biotherapeutics acquisition for $75 million.

4UX111 (Rebisufligene Etisparvovec)
CategoryGene therapy - BLA stage
Description

UX111 (rebisufligene etisparvovec) is an adeno-associated virus (AAV9) gene therapy for Sanfilippo syndrome Type A (MPS IIIA), a rare neurodegenerative disease affecting young children. FDA accepted the BLA with a PDUFA action date of September 19, 2026, and clinical data spanning up to 8 years demonstrates durable treatment effect.

5DTX401
CategoryGene therapy - BLA stage
Description

DTX401 is an investigational AAV8 gene therapy for Glycogen Storage Disease Type Ia (GSDIa). Phase 3 GlucoGene study showed 60% reduction in daily cornstarch dependence while maintaining stable glucose levels. If approved, would be the first-ever gene therapy for GSDIa. PDUFA action date of August 23, 2026.

6DTX301
CategoryGene therapy - Phase 3
Description

DTX301 is an investigational AAV8 gene therapy for ornithine transcarbamylase (OTC) deficiency. Phase 3 Enh3ance study showed 18% reduction in 24-hour plasma ammonia versus placebo at Week 36 (p=0.018). Second primary endpoint evaluating treatment burden reduction is expected H1 2027.

7UX701
CategoryClinical-stage pipeline therapy
Description

UX701 is an investigational gene therapy for Wilson disease, a rare genetic disorder causing copper accumulation. Part of Ultragenyx's diverse pipeline targeting rare genetic diseases.

8UX143 (Setrusumab)
CategoryClinical-stage pipeline therapy
Description

UX143 (setrusumab) is a monoclonal antibody being developed for Osteogenesis Imperfecta. Phase 3 ORBIT and COSMIC studies failed to meet primary endpoints in December 2025. The company is pursuing an accelerated approval pathway based on bone mineral density data.

9UX016
CategoryClinical-stage pipeline therapy
Description

UX016 is an investigational sialic acid prodrug being developed as a substrate replacement therapy for GNE myopathy (GNEM), a rare, severely debilitating neuromuscular disorder affecting approximately 10,000 people in commercially accessible geographies. FDA cleared IND in March 2026 with a Phase 1/2 study planned for H2 2026 involving 24 US patients. The program is externally funded through a venture philanthropy agreement with a patient group.

10UX055
CategoryClinical-stage pipeline therapy
Description

UX055 is an investigational therapy for CDD (cerebellar degeneration) in Ultragenyx's pipeline for rare genetic diseases.

Scale indicator12 records

Each record includes

Type, Value, Description, Source

Partnership5 partners
Strategic tierMinorTypeStrategic or Co-development PartnerAnnounced on2026-04-03
Description

Potential merger between Ultragenyx and Mereo BioPharma was discussed, with a shareholder vote deadline of April 30, 2026. If approved, the merger could create a stronger biopharmaceutical company focused on rare diseases.

Strategic tierMinorTypeStrategic or Co-development PartnerAnnounced on2026-03-30
Description

The UX016 program for GNE myopathy is externally funded through a venture philanthropy agreement with a patient group. This patient organization provides funding and support for the development of treatments for this rare neuromuscular disorder.

Strategic tierCoreTypeStrategic or Co-development PartnerAnnounced on2025-11-04
Description

Collaboration with Kyowa Kirin on Crysvita (burosumab), a treatment for rare bone diseases including X-linked hypophosphatemia (XLH) and tumor-induced osteomalacia (TIO). Crysvita has surpassed $4 billion in US and Canada sales since launch. The partnership involves co-development, co-promotion, and royalty arrangements.

Strategic tierCoreTypeStrategic or Co-development PartnerAnnounced on2022-07-18
Description

Ultragenyx exercised its option to acquire GeneTx Biotherapeutics for $75 million to advance the development of GTX-102, an investigational therapy for Angelman syndrome. GeneTx was founded by the Foundation for Angelman Syndrome Therapeutics (FAST). The acquisition allows Ultragenyx to fully own and develop the Angelman syndrome treatment program.

Strategic tierCoreTypeStrategic or Co-development Partner
Description

FAST founded GeneTx Biotherapeutics, which Ultragenyx acquired for $75 million. FAST is a patient advocacy organization that drives research and development for Angelman syndrome treatments, working closely with Ultragenyx on the GTX-102 program.

Recent move7 records

Each record includes

Date, Type, Title, Description, Source

Expansion highlight6 records

Each record includes

Type, Description

Market position
Competitive moat5 records

Each record includes

Type, Details

Key risks6 records

Each record includes

Headline, Details, Source

Key highlights7 records

Each record includes

Headline, Details, Source

Customer concentration

Classification, Details

Segment1 record

Each record includes

Title, Type, Primary, Description, Pain point addressed, Use case, Source

Ideal customer profile2 records

Each record includes

Profile, Firmographic size, Sales motion, Sales cycle length, Buying structure, Purchase trigger, Buyer persona, Geography, Industry vertical, Primary use case, Description, Pain points, Evidence proof points, Target buyer

Technology focused
Yes
API detail
Has APIbool
No

Docs URL, Description

AI maturity
App detail

Has app

Feature4 records

Each record includes

Title, Differentiator, Description, Source

Core technology
Revenue estimate
Valuation estimate
Number of profiles
Profiles17 records

Each record includes

Name, Designation, Designation category, Overview, Profile commentary, Source

Subsidiaries1 record

Each record includes

Name, Acquired on, Relationship type, Type, Business focus

No data
Funding overview

Funding stage, Last funding date, Total funding USD

Funding rounds7 records

Each record includes

Round, Amount USD, Date, Pre money valuation, Total investors, Investors, News

Investors10 records

Each record includes

Name, Type, Date of entry, Rounds participated, Website

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A2 records

Each record includes

Name, Acquisition type, Announced date, Completed date, Status, Website, News

Investment2 records

Each record includes

Name, Round, Announced date, Lead investor, Website, News

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Ultragenyx Pharmaceutical

Rare Disease Biopharmaceuticalsultragenyx.com

Ultragenyx Pharmaceutical firmographics

Firmographics
Name
Ultragenyx Pharmaceutical
Legal name
Ultragenyx Pharmaceutical Inc.
Website
https://ultragenyx.com
Company type
Public
Founded year
2010
Operating status
Operating
Headcount range
1,001–5,000 employees
Ownership category
akta.pro rank

Ultragenyx Pharmaceutical industry classification

Industry
Product category
Rare Disease Biopharmaceuticals
NAICS
Biological Product (except Diagnostic) Manufacturing (325414), Pharmaceutical and Medicine Manufacturing (3254), Research and Development in Biotechnology (except Nanobiotechnology) (541714)
SIC
Biological Products, (No Disgnostic Substances) (2836), Pharmaceutical Preparations (2834)
akta.pro primary industry
Genetic & Genomic Rare Disease Therapeutics (HLAIAIAA)
akta.pro secondary industries
Gene Therapy for Rare/Monogenic Diseases (HLAAACAE), Rare Pediatric & Congenital Disorder Therapies (HLAIAIAN), Rare Neurology & Neurodegenerative Disorder Therapies (HLAIAIAD)

Keywords

  • Rare disease therapeutics
  • Gene therapy development
  • Biopharmaceutical products
  • Enzyme replacement therapy
  • AAV gene therapy

Where Ultragenyx Pharmaceutical is headquartered

Location

Headquarters

HQ city
Novato
HQ country
United States
HQ region
North America

Offices23 records

Markets served

Ultragenyx Pharmaceutical business model

Business model
GTM type
B2B
Offering type
Hardware or Manufacturing
Cost components
Technology or R&D, Personnel, Operations, Supply Chain, Marketing or Sales

Revenue model

  1. Product Sales - Commercialized Therapies: Ultragenyx generates revenue from four approved products: Crysvita (burosumab), Dojolvi (triheptanoin), and additional rare disease therapies. The company reported Q1 2026 revenue of $136 million and reaffirmed 2026 revenue guidance of $730-760 million. Crysvita has surpassed $4 billion in US and Canada sales since launch.
  2. Royalty Revenue: The company receives royalty payments from partnered products including Kyowa Kirin's collaboration on Crysvita. In November 2025, Ultragenyx sold a 25% royalty interest on Crysvita to OMERS for $400 million, with additional royalties starting January 2028.
  3. Gene Therapy Development: Revenue generated from development and potential approval of gene therapy candidates including UX111 (Sanfilippo syndrome), DTX401 (GSDIa), and DTX301 (OTC deficiency), with upcoming PDUFA dates in 2026.

Go-to-market motion1 record

Distribution channels4 records

Marketing channels5 records

Ultragenyx Pharmaceutical product offering

Product offering

Core offering

Ultragenyx Pharmaceutical develops and commercializes biologic and small-molecule therapeutics for rare and ultra-rare genetic diseases. The company's approved and clinical-stage portfolio spans multiple drug modalities, including AAV gene therapies, antisense oligonucleotides, monoclonal antibodies, enzyme replacement therapies, and substrate replacement therapies, sold globally through specialty pharmacies, hospitals, and regional commercial operations.

Product overview

Ultragenyx Pharmaceutical is a biopharmaceutical company focused on developing and delivering treatments for rare and ultrarare genetic diseases. The company has a diversified pipeline spanning multiple drug modalities including gene therapies, monoclonal antibodies, and antisense oligonucleotides. Approved products include Crysvita (burosumab) for XLH and TIO. Key pipeline candidates include: gene therapies DTX401 (GSDIa, PDUFA Aug 2026), DTX301 (OTC deficiency), UX111 (MPS IIIA, PDUFA Sep 2026), and UX701 (Wilson disease); GTX-102 for Angelman syndrome (Phase 3); UX016 for GNE myopathy (Phase 1/2); and setrusumab for osteogenesis imperfecta. The company operates in multiple countries globally and is working toward profitability by 2027.

Differentiator

Problem solved

Functional benefit

Products and services

  • Crysvita (Burosumab) Crysvita is an approved monoclonal antibody therapy for X-linked hypophosphatemia (XLH) and tumor-induced osteomalacia (TIO), rare bone diseases. Developed in collaboration with Kyowa Kirin, it has surpassed $4 billion in US and Canada sales since launch, with a 25% royalty interest sold to OMERS for $400 million in November 2025.
  • Dojolvi (Triheptanoin) Dojolvi (triheptanoin) is an approved Ultragenyx therapy for a rare metabolic disorder, part of the company's four-product commercial portfolio contributing to 2026 revenue guidance of $730–760 million.
  • GTX-102 GTX-102 is an antisense oligonucleotide therapy being developed for Angelman syndrome, a rare neurological disorder with no currently approved therapies. Phase 3 Aspire trial is ongoing with primary endpoint of cognition. Acquired through the July 2022 GeneTx Biotherapeutics acquisition for $75 million.
  • UX111 (Rebisufligene Etisparvovec) UX111 (rebisufligene etisparvovec) is an adeno-associated virus (AAV9) gene therapy for Sanfilippo syndrome Type A (MPS IIIA), a rare neurodegenerative disease affecting young children. FDA accepted the BLA with a PDUFA action date of September 19, 2026, and clinical data spanning up to 8 years demonstrates durable treatment effect.
  • DTX401 DTX401 is an investigational AAV8 gene therapy for Glycogen Storage Disease Type Ia (GSDIa). Phase 3 GlucoGene study showed 60% reduction in daily cornstarch dependence while maintaining stable glucose levels. If approved, would be the first-ever gene therapy for GSDIa. PDUFA action date of August 23, 2026.
  • DTX301 DTX301 is an investigational AAV8 gene therapy for ornithine transcarbamylase (OTC) deficiency. Phase 3 Enh3ance study showed 18% reduction in 24-hour plasma ammonia versus placebo at Week 36 (p=0.018). Second primary endpoint evaluating treatment burden reduction is expected H1 2027.
  • UX701 UX701 is an investigational gene therapy for Wilson disease, a rare genetic disorder causing copper accumulation. Part of Ultragenyx's diverse pipeline targeting rare genetic diseases.
  • UX143 (Setrusumab) UX143 (setrusumab) is a monoclonal antibody being developed for Osteogenesis Imperfecta. Phase 3 ORBIT and COSMIC studies failed to meet primary endpoints in December 2025. The company is pursuing an accelerated approval pathway based on bone mineral density data.
  • UX016 UX016 is an investigational sialic acid prodrug being developed as a substrate replacement therapy for GNE myopathy (GNEM), a rare, severely debilitating neuromuscular disorder affecting approximately 10,000 people in commercially accessible geographies. FDA cleared IND in March 2026 with a Phase 1/2 study planned for H2 2026 involving 24 US patients. The program is externally funded through a venture philanthropy agreement with a patient group.
  • UX055 UX055 is an investigational therapy for CDD (cerebellar degeneration) in Ultragenyx's pipeline for rare genetic diseases.

Quantifiable outcome

  • 18% reduction in 24-hour plasma ammonia levels (p=0.018) in OTC deficiency patients treated with DTX301 gene therapy
  • +4 more outcomes

Companies that use Ultragenyx Pharmaceutical

Customer profile

Segments1 record

Ideal customer profiles2 records

Ultragenyx Pharmaceutical technology and API

Technology

Technology focussed Yes

API detail

Has API
No
API docs
API detail

Core technology

AI maturity

App detail

Feature4 records

Ultragenyx Pharmaceutical partnerships and signals

Strategic signal

Partnerships

Five partnerships are on record, tiered minor and core.

  • Mereo BioPharmaminorStrategic or Co-development Partner · 3 April 2026Potential merger between Ultragenyx and Mereo BioPharma was discussed, with a shareholder vote deadline of April 30, 2026. If approved, the merger could create a stronger biopharmaceutical company focused on rare diseases.
  • Patient Advocacy Group (GNE Myopathy)minorStrategic or Co-development Partner · 30 March 2026The UX016 program for GNE myopathy is externally funded through a venture philanthropy agreement with a patient group. This patient organization provides funding and support for the development of treatments for this rare neuromuscular disorder.
  • Kyowa KirincoreStrategic or Co-development Partner · 4 November 2025Collaboration with Kyowa Kirin on Crysvita (burosumab), a treatment for rare bone diseases including X-linked hypophosphatemia (XLH) and tumor-induced osteomalacia (TIO). Crysvita has surpassed $4 billion in US and Canada sales since launch. The partnership involves co-development, co-promotion, and royalty arrangements.
  • GeneTx BiotherapeuticscoreStrategic or Co-development Partner · 18 July 2022Ultragenyx exercised its option to acquire GeneTx Biotherapeutics for $75 million to advance the development of GTX-102, an investigational therapy for Angelman syndrome. GeneTx was founded by the Foundation for Angelman Syndrome Therapeutics (FAST). The acquisition allows Ultragenyx to fully own and develop the Angelman syndrome treatment program.
  • Foundation for Angelman Syndrome Therapeutics (FAST)coreStrategic or Co-development PartnerFAST founded GeneTx Biotherapeutics, which Ultragenyx acquired for $75 million. FAST is a patient advocacy organization that drives research and development for Angelman syndrome treatments, working closely with Ultragenyx on the GTX-102 program.

Scale indicators12 records

Recent moves7 records

Expansion highlights6 records

Ultragenyx Pharmaceutical competitors and assessment

Company assessment

Market position

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Ultragenyx Pharmaceutical social profiles

Digital presence

Ultragenyx Pharmaceutical financial estimates

Financial estimate

Revenue estimate

Valuation estimate

Ultragenyx Pharmaceutical leadership team

Management profile

Number of profiles

Profiles17 records

Ultragenyx Pharmaceutical subsidiaries and ownership

Company hierarchy

Subsidiaries1 record

Ultragenyx Pharmaceutical funding detail

Funding detail

Funding overview

Funding rounds7 records

Investors10 records

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

Ultragenyx Pharmaceutical M&A and investment

M&A and investment

M&A2 records

Investments2 records

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Ultragenyx Pharmaceutical

What does Ultragenyx Pharmaceutical do?

Ultragenyx Pharmaceutical develops and commercializes biologic and small-molecule therapeutics for rare and ultra-rare genetic diseases. The company's approved and clinical-stage portfolio spans multiple drug modalities, including AAV gene therapies, antisense oligonucleotides, monoclonal antibodies, enzyme replacement therapies, and substrate replacement therapies, sold globally through specialty pharmacies, hospitals, and regional commercial operations.

Is Ultragenyx Pharmaceutical a public or private company?

Ultragenyx Pharmaceutical is a public company. It is classified as public and is currently operating.

When was Ultragenyx Pharmaceutical founded?

Ultragenyx Pharmaceutical was founded in 2010. It employs 1,001 to 5,000 people.

Where is Ultragenyx Pharmaceutical based?

Ultragenyx Pharmaceutical is headquartered in Novato, United States, in the North America region.

How does Ultragenyx Pharmaceutical make money?

Three revenue lines are on record. Product Sales - Commercialized Therapies are the primary driver. The others are royalty Revenue and gene Therapy Development.

Does Ultragenyx Pharmaceutical have an API?

No public API is recorded for Ultragenyx Pharmaceutical.

What industry is Ultragenyx Pharmaceutical in?

Ultragenyx Pharmaceutical's product category is Rare Disease Biopharmaceuticals. Its primary akta.pro industry code is HLAIAIAA, Genetic & Genomic Rare Disease Therapeutics, with a secondary code of HLAAACAE, Gene Therapy for Rare/Monogenic Diseases. Its NAICS code is 325414 and its SIC code is 2836.

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Live signals
FinancialContent Business PageINVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Ultragenyx Pharmaceutical Inc. - RAREPomerantz LLP is investigating claims on behalf of Ultragenyx Pharmaceutical investors, alleging securities fraud. The investigation follows a September 2, 2026 press release stating the Phase 3 Aspire study for apazunersen failed to meet primary and key secondary endpoints, causing the stock to drop 44.03% to $14.85.American Banking and Market NewsComparing Ultragenyx Pharmaceutical (NASDAQ:RARE) & Mereo BioPharma Group (NASDAQ:MREO)Ultragenyx Pharmaceutical and Mereo BioPharma Group are compared on profitability, institutional ownership, and analyst ratings. Mereo has higher probable upside (329.55% vs 138.48%) and lower valuation, but Ultragenyx beats on 9 of 14 factors. Analysts favor Mereo due to higher upside.American Banking and Market NewsUltragenyx Pharmaceutical (NASDAQ:RARE) Stock Price Down 6% – Should You Sell?Ultragenyx Pharmaceutical shares fell 6% to $14.3060 on Monday, with volume down 85% from average. Analysts have an average "Hold" rating and $34.58 target, while the company beat Q2 EPS estimates at -$0.90 and revenue rose 28.5% to $214 million.Simply Wall StUltragenyx Pharmaceutical (RARE) Could Be 42% Undervalued On EMA Filing ProgressUltragenyx Pharmaceutical's EMA validated its Marketing Authorisation Application for rebisufligene etisparvovec in Sanfilippo syndrome Type A, following FDA approval. Shares rose 3.19% in one day but fell 42.63% over 30 days, with a 1-year total shareholder return down 51.23%. Analysts peg fair value at $26 versus a last close of $15.22.Quiver QuantitativeUltragenyx Announces EMA Validation of Marketing Authorisation Application for Rebisufligene Etisparvovec for MPS IIIA | RARE Stock NewsUltragenyx announced the EMA validated its Marketing Authorisation Application for rebisufligene etisparvovec, an investigational gene therapy for MPS IIIA. The validation allows formal scientific review, but does not guarantee approval. The company is also engaging with UK and Saudi authorities for potential geographic expansion.Stock TitanUltragenyx MPS IIIA gene therapy MAA validated by EMAUltragenyx announced that the EMA validated its Marketing Authorisation Application for rebisufligene etisparvovec, a gene therapy for MPS IIIA. The validation enables formal scientific review but does not constitute approval. The company plans to expand to other geographies.BioSpaceUltragenyx Announces Marketing Authorisation Application (MAA) Submission to the European Medicines Agency (EMA) for the First Investigational Gene Therapy for MPS IIIA (Sanfilippo Syndrome Type A)Ultragenyx announced that the EMA validated its Marketing Authorisation Application for rebisufligene etisparvovec, an investigational gene therapy for MPS IIIA. The validation confirms the application is sufficiently complete for formal review, but does not constitute approval. The company plans to expand to other geographies over time.PR NewswireINVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Ultragenyx Pharmaceutical Inc. - RAREPomerantz LLP is investigating claims on behalf of Ultragenyx Pharmaceutical investors, alleging securities fraud. The investigation follows a September 2, 2026 press release stating the Phase 3 Aspire study for apazunersen failed to meet primary and key secondary endpoints, causing the stock to drop 44.03% to $14.85 per share.FinancialContent Business PageINVESTOR ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Ultragenyx Pharmaceutical Inc. - RAREPomerantz LLP is investigating claims on behalf of Ultragenyx Pharmaceutical investors, alleging securities fraud. The investigation follows a September 2, 2026 press release stating the Phase 3 Aspire study for apazunersen failed to meet primary and key secondary endpoints, causing the stock to drop 44.03% to $14.85.BioSpaceMilestone Sanfilippo nod helps Ultragenyx regroup after tough Angelman defeatUltragenyx received FDA approval for Fayuvi in Sanfilippo syndrome type A and Genglycos for glycogen storage disease type Ia, but its Phase 3 Angelman trial failed, prompting cost-cutting. The company has $436 million in cash and reaffirmed 2026 revenue guidance of $730–760 million.