0000818033 2021-05-10 2021-05-10 false 0000818033 8-K 2021-05-10 Heron Therapeutics, Inc. DE 001-33221 94-2875566 4242 Campus Point Court Suite 200 San Diego CA 92121 (858) 251-4400 false false false false Common Stock, par value $0.01 per share HRTX NASDAQ false