R

Rib-X

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New Haven, United States · Founded 2000 · $209.5M raised

Founded
2000
Business Model
B2B
Total Funding
$209.5M
Last Round
$70.0M Venture RoundFeb 2014
Rounds
5

About

Rib-X Pharmaceuticals was an American biopharmaceutical company founded in 2000 in New Haven, Connecticut, focused on the structure-based design and development of novel broad-spectrum antibiotics to treat antibiotic-resistant infections in hospital settings. Its lead candidate, delafloxacin, was later named one of R&D Directions' 100 great investigational drugs of 2009. The company was renamed Melinta Therapeutics in 2013.

Summary

Rib-X is a Biotech company based in New Haven, United States, founded in 2000. It has raised $209.5M in total across 5 rounds, most recently a $70.0M Venture Round round in Feb 2014. Investors include SR One and Euclid SR Partners.

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Funding History

AcquisitionSep 2025

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