Analyst Coverage

Tazeen Ahmad
Bank of America Merrill Lynch
Ed Arce
H.C. Wainwright
Ritu Baral
Cowen & Company
Louise Chen
Cantor Fitzgerald
Kevin DeGeeter
Steve Willey

Spero Therapeutics, Inc. is followed by the analysts listed above. Please note that any opinions, estimates or forecasts regarding Spero Therapeutics, Inc.'s performance made by these analysts are theirs alone and do not represent opinions, forecasts or predictions of Spero Therapeutics, Inc. or its management. Spero Therapeutics, Inc. does not by its reference above or distribution imply its endorsement of or concurrence with such information, conclusions or recommendations.