SPRO Spero Therapeutics Inc

Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will report its first quarter 2025 financial results and provide a business update on Tuesday, May 13, after the market close. The Company does not intend to host a conference call.

About Spero TherapeuticsSpero Therapeutics, headquartered in Cambridge, Massachusetts, is a clinical-stage biopharmaceutical company focused on identifying and developing novel treatments for rare diseases and MDR bacterial infections with high unmet need. For more information, visit www.sperotherapeutics.com

Investor Relations Contact:Shai Biran, PhDSpero Therapeutics IR@Sperotherapeutics.com Media Inquiries: media@sperotherapeutics.com