| Schedule of common stock | |
| | |
| Tranche 2 Institutional Placement, subject to shareholder approval | |
| 9,210,757 | |
| Conversion of Common Stock warrants | |
| 1,944,214 | |
| 2013 Equity Incentive Plan | |
| 1,594,564 | |
| Amended 2021 Equity Incentive Plan | |
| 5,411,631 | |
| Outside of Amended 2021 Equity Incentive Plan | |
| 158,180 | |
| Total shares of Common stock reserved for issuance | |
| 18,319,346 | |