 RANCHO CUCAMONGA, CA ACCESSWIRE October 28, 2022 Amphastar Pharmaceuticals, Inc. NASDAQ:AMPH announced that the Company will release results for its third quarter of 2022 ended September 30, 2022, after the market closes on Monday, November 7, 2022, and will hold a conference call to discuss its financial results at 2:00 p.m. Pacific Time. 