The following common stock equivalents were excluded from the calculation of diluted net loss per share applicable to common stockholders for the periods indicated because including them would have had an anti-dilutive effect:

* As of June 30, 2021, this is comprised of 2,117,094 warrants to purchase common stock issued in connection with the Company’s April 2019 financing (refer to Note 10), 27,548 warrants to purchase common stock issued in connection with the execution of the Company’s loan agreement in February 2020 (refer to Note 7), 17,389 warrants to purchase common stock issued in connection with the second draw on this loan agreement in December 2020 (refer to Note 7), and 2,828,125 warrants to purchase common stock issued in connection with the private placement in December 2020 (refer to Note 10). As of June 30, 2020, this is comprised of 2,118,094 warrants to purchase common stock issued in connection with the Company’s April 2019 financing (refer to Note 10) and 27,548 warrants to purchase common stock issued in connection with the execution of the Company’s loan agreement in February 2020 (refer to Note 7).