CUSIP No. 39536G105
EXHIBIT 99.1
JOINT FILING AGREEMENT
The undersigned, being duly authorized thereunder, hereby execute this agreement as an exhibit to this Schedule 13D amendment to evidence the agreement of the below-named parties, in accordance with the rules promulgated pursuant to the Securities Exchange Act of 1934, to file this Schedule 13D amendment (including amendments thereto) jointly on behalf of each such party.
| MORNINGSIDE VENTURE INVESTMENTS LIMITED | ||
| By: | /s/ Frances Anne Elizabeth Richard | |
| Frances Anne Elizabeth Richard, Director | ||
| MVIL, LLC | ||
| By: | /s/ Cheng Yee Wing Betty | |
| Cheng Yee Wing Betty, Manager | ||
| /s/ Frances Anne Elizabeth Richard | ||
| Frances Anne Elizabeth Richard | ||
| /s/ Jill Marie Franklin | ||
| Jill Marie Franklin | ||
| /s/ Peter Stuart Allenby Edwards | ||
| Peter Stuart Allenby Edwards | ||
| /s/ Cheung Ka Ho | ||
| Cheung Ka Ho | ||
| /s/ Cheng Yee Wing Betty | ||
| Cheng Yee Wing Betty | ||
| /s/ Wong See Wai | ||
| Wong See Wai | ||