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Search for companies, drugs, and catalysts

Spero Therapeutics, Inc.

SPRO
$73MMicro Cap

Next catalyst

No upcoming catalyst in our data

No upcoming FDA decision, filing or trial readout is on file for SPRO. That does not mean none is planned.

Get an email about SPRO's next catalysts

Track Spero Therapeutics (SPRO) and we email you when an FDA date moves, 7 days and 1 day before the decision when the exact day is known, and when it is announced. Free account, no card.

1 upcoming event in our data (earnings).See the timeline

Catalyst Timeline

1 upcoming, 0 past

Earnings

SPRO Earnings Report

November 2026~

Date estimated from past reporting pattern, not yet confirmed by the company | EPS Est: $-0.14 | FQ end Sep/2026 | Call: tbd

Market Overview

Stock performance and key metrics

NASDAQPharmaceutical PreparationsπŸ‡ΊπŸ‡ΈNorth AmericaCAMBRIDGE32 employees
Drug Pipeline

Frequently asked questions

What is in Spero Therapeutics, Inc.'s drug pipeline?β†’

CatalystAlert tracks 4 drug candidates in Spero Therapeutics, Inc.'s (SPRO) pipeline across Phase 3, Phase 2. Its lead program is Dummy Infusion (Phase 3). Each drug's phase, indication and upcoming catalysts are listed on this page.

When is Spero Therapeutics, Inc.'s next FDA catalyst?β†’

CatalystAlert tracks every upcoming catalyst for Spero Therapeutics, Inc. (SPRO) β€” PDUFA decision dates, Phase 1/2/3 trial readouts, FDA advisory committee meetings and NDA/BLA filings β€” each confidence-rated as confirmed, estimated or AI-detected.

How do I track SPRO biotech catalysts?β†’

Add SPRO to your CatalystAlert watchlist for alerts ahead of each catalyst, and follow Spero Therapeutics, Inc.'s live catalyst calendar, drug pipeline and clinical-trial timeline on this page β€” sourced from ClinicalTrials.gov, FDA and SEC filings.

Data is aggregated from public sources (FDA, SEC, ClinicalTrials.gov). While we strive for accuracy, information may be incomplete, delayed, or contain errors. Terms apply