LLC Its:General Partner By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer Yorkville Advisors GP, LLC By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer D-Beta One EQ, Ltd. By:Delta Beta Advisors, LLC Its:Investment Manager By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer D-Beta One Blocker EQ, Ltd. By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer D-Beta One Growth and Opportunity Fund Offshore, LP By:D-Beta One GP, LP Its:General Partner By:D-Beta One GP, LLC Its:General Partner By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer D-Beta One GP, LLC By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer Delta Beta Advisors, LP By:Delta Beta Advisors, LLC Its:General Partner By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer D-Beta One GP, LLC By:/s/ Troy J. Rillo, Esq. Date: 4/8/2020 Troy J. Rillo, Esq. Chief Compliance Officer /s/ Matthew Beckman Date: 4/8/2020 Matthew Beckman