Analyst Coverage

Ritu Baral
Cowen & Company
Louise Chen
Cantor Fitzgerald
Kevin DeGeeter
Raghuram Selvaraju, Ph.D.
H.C. Wainwright
Steve Willey
Joshua Schimmer
Evercore ISI

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.