Spero Therapeutics, Inc. Shares of Common Stock (par value $0.001 per share) Controlled Equity OfferingSM Sales AgreementSales Agreement • December 3rd, 2018 • Spero Therapeutics, Inc. • Pharmaceutical preparations • New York
Contract Type FiledDecember 3rd, 2018 Company Industry JurisdictionSpero Therapeutics, Inc., a Delaware corporation (the “Company”), confirms its agreement (this “Agreement”) with Cantor Fitzgerald & Co. (the “Agent”), as follows: