Updates Preliminary Unaudited 2025 Estimates: - Total Revenue of $1,385 - $1,400 million, YoY Growth of 36% to 38%1 - Royalty Revenue of $865 - $870 million, YoY Growth of 51% to 52%1 Raises 2026 Financial Guidance Ranges: - Increases Total Revenue to $1,710 - $1,810 million, YoY Growth of 23% to 30%2 - Increases Royalty Revenue to $1,130 - $1,170 million, YoY Growth of 30% to 35%2 - Increases Adjusted EBITDA to $1,125 - $1,205 million3,4 - Increases non-GAAP Diluted EPS to $7.75 - $8.253,4 Expands Drug Delivery Opportunity with Acquisition of Surf Bio and its Hyperconcentration Technology Conference Call Scheduled Today at 5:30am PT/8:30am ET SAN DIEGO, Jan. 28, 2026 /PRNewswire/ -- Halozyme Therapeutics, Inc. (Nasdaq: HALO) ("Halozyme" or the "Company") today provided a business update, including providing preliminary unaudited 2025 revenue estimates and raising full year 2026 and multi-year financial guidance. The Company also announced it acquired Surf Bio, Inc. ("Surf Bio"), a biopharmaceutical company with an innovative, biologic hyperconcentration technology seeking to transform the delivery of antibodies and biologics, in December 2025.