Exhibit 99.1
Joint Filing Agreement
In accordance with Rule13d-1(f) under the Securities and Exchange Act of 1934, the persons or entities named below agree to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Shares of the Issuer and further agree that this joint filing agreement be included as an exhibit to this Schedule 13D. In evidence thereof, the undersigned, being duly authorized, have executed this Joint Filing Agreement as of July 16, 2019.
| CANAAN VIII L.P. | ||
| By: | Canaan Partners VIII LLC, its general partner | |
| By: | /s/ Nancy Levenson | |
Nancy Levenson Attorney-in-Fact | ||
| CANAAN PARTNERS VIII LLC | ||
| By: | /s/ Nancy Levenson | |
Nancy Levenson Attorney-in-Fact | ||
