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Mirum Pharmaceuticals (MIRM) investor relations material

Mirum Pharmaceuticals M&A Announcement summary

Complete event summary combining all related documents: earnings call transcript, report, and slide presentation.
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M&A Announcement summary8 Dec, 2025

Deal rationale and strategic fit

  • Acquisition expands leadership in rare diseases, particularly rare liver disorders, by adding a late-stage asset for chronic hepatitis delta virus (HDV) to the portfolio and advancing the late-stage pipeline for overlooked conditions with high unmet need.

  • Brelovitug, the acquired anti-hepatitis B surface antigen monoclonal antibody, is highly synergistic with existing expertise and leverages established relationships in the rare liver disease community.

  • The deal aligns with the strategy to deliver breakthrough medicines, unlocks significant value for patients, and leverages existing commercialization capabilities.

  • The acquisition is expected to deepen relationships with key stakeholders and provide a fourth potential registrational readout within 18 months.

Financial terms and conditions

  • Purchase price includes $250 million in cash and $370 million in stock at $71.21 per share, plus up to $200 million in tiered sales-based milestone payments starting at $500 million in annual sales.

  • Private placement to raise approximately $200 million at $68.48 per share to fund the transaction.

  • Mirum remains financially independent with $378 million in cash, equivalents, and investments.

  • Low single-digit royalty and minimal milestones owed to Novartis for background license.

Synergies and expected cost savings

  • Significant synergies anticipated by leveraging existing commercial operations, infrastructure, and rare liver expertise.

  • Operational efficiency and disciplined execution expected to maintain over 50% commercial margins.

  • Only modest incremental additions to field teams expected, maximizing operating leverage.

How does Brelovitug fit Mirum's commercial model
Brelovitug's path to accelerated approval
How does private placement impact financials
AZURE 1 interim data: What is its key purpose?
Strategies to boost US HDV diagnosis rates
Brelovitug's core competitive advantages?
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Frequently asked questions

Mirum Pharmaceuticals Inc. is a biopharmaceutical company focused on the development and commercialization of therapies for rare liver diseases. The company targets conditions that primarily affect children and adults with limited treatment options. Mirum’s therapeutic approach addresses disorders related to bile acid metabolism, aiming to improve liver function and quality of life for patients. The company's portfolio includes both approved treatments and investigational therapies designed to manage chronic liver diseases. The company is headquartered in Foster City, California, and its shares are listed on the NASDAQ.

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