Exhibit 99.1
The undersigned agree that this Schedule 13D, and all amendments thereto, relating to the Common Stock of Graybug Vision, Inc. shall be filed on behalf of the undersigned.
| DEERFIELD MGMT III, L.P. | ||
| By: J.E. Flynn Capital III, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Name: | Jonathan Isler | |
| Title: | Attorney-in-Fact | |
| DEERFIELD PRIVATE DESIGN FUND III, L.P. | ||
| By: Deerfield Mgmt III, L.P., General Partner | ||
| By: J.E. Flynn Capital III, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Name: | Jonathan Isler | |
| Title: | Attorney-in-Fact | |
| DEERFIELD MGMT HIF, L.P. | ||
| By: J.E. Flynn Capital HIF, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Jonathan Isler, Attorney-In-Fact | ||
| DEERFIELD HEALTHCARE INNOVATIONS FUND, L.P. | ||
| By: Deerfield Mgmt HIF, L.P., General Partner | ||
| By: J.E. Flynn Capital HIF, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Jonathan Isler, Attorney-In-Fact | ||
| DEERFIELD PARTNERS, L.P. | ||
| By: Deerfield Mgmt, L.P., General Partner | ||
| By: J.E. Flynn Capital, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Name: | Jonathan Isler | |
| Title: | Attorney-in-Fact | |
| DEERFIELD MGMT, L.P. | ||
| By: J.E. Flynn Capital, LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Name: | Jonathan Isler | |
| Title: | Attorney-in-Fact | |
| DEERFIELD MANAGEMENT COMPANY, L.P. | ||
| By: Flynn Management LLC, General Partner | ||
| By: | /s/ Jonathan Isler | |
| Name: | Jonathan Isler | |
| Title: | Attorney-in-Fact | |
| JAMES E. FLYNN | ||
| /s/ Jonathan Isler | ||
| Jonathan Isler, Attorney-in-Fact | ||
