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Spero Therapeutics Announces $30 Million Series B Preferred Financing

CAMBRIDGE, Massachusetts, February 2, 2016 – Spero Therapeutics, a biopharmaceutical company founded to develop novel therapies to treat bacterial infections, announced existing Series A investors Atlas Venture, SR One, MRL Ventures, Lundbeckfond Ventures, The Kraft Group and Partners Innovation Fund will provide $30 million in Preferred B funding.

Spero will use proceeds from this financing to further progress its unique therapeutic “Potentiator Platform,” intended to improve drug potency and enhance the utility of existing anti-infective medications. Funding will also enable the organization to advance efforts in support of its DHFR program which targets Gram-positive and negative bacteria, fungi and protists. The DHFR program seeks to expand a novel antifolate’s antibacterial spectrum to treat trimethoprim-resistant isolates including key Gram-negative pathogens.

“Spero is making excellent progress in its effort to create novel therapies to combat severe infections by reinvigorating existing antibiotics and returning their relevance within the field of anti-infectives,” said Jean-François Formela, M.D., Partner at Atlas Venture. “We are excited to continue working with a company doing truly innovative work that has the potential to fulfill such an important unmet medical need.”

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