0001587221 2021-11-17 2021-11-17 false 0001587221 8-K 2022-01-05 ZOSANO PHARMA CORPORATION DE 001-36570 45-4488360 34790 Ardentech Court Fremont CA 94555 510 745-1200 false false false false Common Stock, $0.0001 par value ZSAN NASDAQ false