| CUSIP NUMBER 75737F108 | 13G | Page 23 of 25 Pages |
Exhibit 99.1
Pursuant to Rule 13d-1(k)(1)(iii) of Regulation 13D-G of the General Rules and Regulations of the Securities and Exchange Commission under the Securities and Exchange Act of 1934, as amended, the undersigned agrees that the statement to which this Exhibit is attached is filed on behalf of each of them.
Dated: January 26, 2018
| Draper Fisher Jurvetson Fund IX, L.P. | ||
| By: | Draper Fisher Jurvetson Fund IX Partners, L.P. (general partner) | |
| By: | DFJ Fund IX, Ltd., its general partner | |
| By: | /s/ John H. N. Fisher | |
| Name: | John H. N. Fisher | |
| Title: | Managing Director |
| Draper Fisher Jurvetson Fund IX Partners, L.P. | ||
| By: | DFJ Fund IX, Ltd., its general partner | |
| By: | /s/ John H. N. Fisher | |
| Name: | John H. N. Fisher | |
| Title: | Managing Director |
| DFJ Fund IX, Ltd. | ||
| By: | /s/ John H. N. Fisher | |
| Name: | John H. N. Fisher | |
| Title: | Managing Director | |
| CUSIP NUMBER 75737F108 | 13G | Page 2 4 of 25 Pages |
| Draper Fisher Jurvetson Partners IX, LLC | ||
| By: | /s/ John H. N. Fisher | |
| Name: | John H. N. Fisher | |
| Title: | Managing Member | |
| Draper Associates, L.P. | ||
| By: | Draper Associates, Inc. (General Partner) | |
| By: | /s/Timothy C. Draper | |
| Name: | Timothy C. Draper | |
| Title: | President |
| Draper Associates, Inc. | ||
| By: | /s/ Timothy C. Draper | |
| Name: | Timothy C. Draper | |
| Title: | President | |
| Draper Associates Riskmasters Fund II, LLC | ||
| By: | /s/ Timothy C. Draper | |
| Name: | Timothy C. Draper | |
| Title: | Managing Member | |
| Draper Associates Riskmasters Fund III, LLC | ||
| By: | /s/ Timothy C. Draper | |
| Name: | Timothy C. Draper | |
| Title: | Managing Member | |
| CUSIP NUMBER 75737F108 | 13G | Page 25 of 25 Pages |
| /s/ Timothy Draper |
| Timothy Draper |
| /s/ John H. N. Fisher |
| John H. N. Fisher |
| /s/ Stephen T. Jurvetson |
| Stephen T. Jurvetson |