1. Halozyme plans to offer $650 million in convertible notes due 2031 and 2032. 2. Proceeds will fund capped call transactions and repurchase existing convertible notes. 3. The offering aims to improve cash flow and reduce potential dilution. 4. Market price of HALO stock may fluctuate post-offering and due to hedging activities. 5. The notes are senior, unsecured obligations, maturing in 2031 and 2032.