Summary of significant accounting policies (Tables)

3 Months Ended

Mar. 31, 2021

Summary of significant accounting policies

Schedule of potentially dilutive securities have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive

The following potentially dilutive securities outstanding as of March 31, 2021 and 2020 have been excluded from the computation of diluted weighted-average shares of common stock outstanding, as they would be anti-dilutive:

	Three Months Ended March 31,
	2021	2020
Stock options(1)	1,636,069	1,016,634
Common stock warrants(1)	1,023,530	—
Convertible preferred stock(1)	—	4,447,981
	2,659,599	5,464,615

(1) Represents common stock equivalents.