 RANCHO CUCAMONGA, CA ACCESSWIRE November 22, 2022 Amphastar Pharmaceuticals, Inc. NASDAQ:AMPH announced today that Bill Peters, CFO and Tony Marrs, Sr. Vice President Regulatory Affairs and Clinical Operations, will participate in an Analyst-Moderated fireside chat at the Piper Sandler 34th Annual Healthcare Conference on November 30th, 2022 at 11:00 am Eastern Time. For access, visit Amphastars Pharmaceuticals website at 