2025 Wells Fargo Healthcare Conference September 3, 2025 Highly Purified Peptide/Protein Proprietary Injectables Inhalation Intranasal Biosimilar Interchangeable Complex Generic Combination Products Forward Looking Statements This presentation and the accompanying oral presentation contain forward-looking statements, of Amphastar Pharmaceuticals, Inc. ("Amphastar", "we". "our" and that are based on our management's current expectations and assumptions and on information currently available to management. Fo ...

Company Strategy & Business Model - Amphastar focuses on a "Three-H" strategy: High Quality, High Efficiency, and High Technology, aiming for high net income margins[8, 15, 17] - The company employs a dual-strategy growth model, combining organic pipeline development with strategic acquisitions[8, 13, 14] - Amphastar operates with a fully integrated business model, encompassing R&D, manufacturing, and distribution[8, 9, 10] Financial Performance & Pipeline Evolution - Amphastar's revenue increased from $295 million in 2018 to $732 million in 2024[15] - Adjusted net income margin grew from 3.5% in 2018 to 27.4% in 2024[15] - The company is shifting its pipeline focus from generic drugs (63% in 2021) towards biosimilars (35%) and proprietary products (50%) by 2026[20] Key Products & Milestones - BAQSIMI sales are projected to reach a peak of $250 million to $275 million[47] - Primatene MIST sales surpassed $100 million in 2024[55] - The company has invested approximately $351 million in R&D over the past 5 years[26]

Company Strategy & Focus - Amphastar operates under a "Three-H Focus" emphasizing High Quality, High Efficiency, and High Technology to drive high net income margins[8, 15, 17] - The company employs a dual-strategy growth model, combining organic pipeline development with strategic acquisitions[8, 13, 14] - Amphastar is shifting its pipeline focus towards proprietary and biosimilar products, projecting a change from 63% generic, 16% biosimilar, and 21% proprietary in 2021 to 15% generic, 35% biosimilar, and 50% proprietary in 2026[20] - The company has invested approximately $351 million in self-funded R&D over the recent 5 years[26] Financial Performance & Projections - Amphastar's revenue has grown from $295 million in 2018 to $732 million in 2024[15] - Adjusted net income margin increased from 3.5% in 2018 to 27.4% in 2024[15] - BAQSIMI® sales are projected to reach a peak of $250 million to $275 million[47] - The company projects $2.00 to $2.50 incremental adjusted EPS at peak from BAQSIMI®[52] Key Products & Pipeline - Primatene MIST® sales surpassed $100 million in 2024[55] - BAQSIMI® annual worldwide sales increased from $76 million in 2020 to $166 million in 2024[51] - The company has several ANDA and BLA pipeline candidates, including AMP-002, AMP-015, AMP-018, AMP-007, and AMP-028, targeting markets with multi-million dollar sales potential[29]

Company Strategy & Focus - Amphastar operates with a "Three-H Focus" on High Quality, High Efficiency, and High Technology to drive high net income margins[8, 15, 17] - The company employs a dual-strategy growth model, combining organic pipeline development with strategic acquisitions[8, 13, 14] - Amphastar is shifting its pipeline towards proprietary and biosimilar drugs, projecting a change from 63% generic, 16% biosimilar, and 21% proprietary in 2021 to 15% generic, 35% biosimilar, and 50% proprietary in 2026[19, 20] Financial Performance & R&D - Amphastar's revenue increased from $295 million in 2018 to $732 million in 2024[15] - Adjusted net income margin grew from 3.5% in 2018 to 27.4% in 2024[15] - The company has invested approximately $351 million in self-funded R&D over the past 5 years[26] Key Products & Pipeline - Baqsimi® sales are projected to reach a peak of $250 million to $275 million, with an estimated $2.00 to $2.50 incremental adjusted EPS at peak[47, 52] - Primatene MIST® annual sales surpassed $100 million in 2024[55] - The company has several ANDA and BLA pipeline candidates, including AMP-007 (inhalation) with a market size of +$1.5 billion and AMP-028 (biosimilar) with a market size of +$2.0 billion[29]