Pre-specified interim analysis of Phase 3 PIVOT-PO clinical trial of tebipenem HBr in complicated urinary tract infection (cUTI) is expected to be completed in Q2 2025 Company expects to complete analysis of full data set from the Phase 2 study of SPR720 for treatment of Nontuberculous Mycobacterial Pulmonary Disease (NTM-PD) and determine next steps for the program SPR206, a Phase 2 ready program for hospital and ventilator... Read More

CAMBRIDGE, Mass., March 18, 2025 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset 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 financial results for the fourth quarter and full year ended December 31, 2024, and provide a business update,... Read More

CAMBRIDGE, Mass., Feb. 25, 2025 (GLOBE NEWSWIRE) -- S pero Therapeutics , Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Esther Rajavelu, Spero’s Interim President and Chief Executive Officer, management will present and will be available for... Read More

CAMBRIDGE, Mass., Feb. 25, 2025 (GLOBE NEWSWIRE) -- Spero Therapeutics , Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Esther Rajavelu, Spero’s Interim President and Chief Executive Officer, management will present and will be available for... Read More

Esther Rajavelu Appointed Interim President and Chief Executive Officer, Frank Thomas Appointed Chairman of the Board Interim Changes to Leadership Follow the Company’s Response to a Wells Notice from the SEC Relating to Certain Public Disclosures Made in 2022 Phase 3 PIVOT-PO Trial of Tebipenem HBr Reaches Over 60% Enrollment as of December 31, 2024; Remains on Track to Complete Enrollment in 2H 2025 Cash Balance and Cash... Read More

Phase 3 PIVOT-PO trial of tebipenem HBr remains on track to complete enrollment in 2H 2025 Reiterate cash runway into mid-2026; Q3 2024 ending cash balance of $76.3M CAMBRIDGE, Mass., Nov. 14, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics , Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR)... Read More

CAMBRIDGE, Mass., Nov. 07, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset 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 third quarter 2024 financial results and provide an update on its business on Thursday, November 14, after the... Read More

Phase 2a proof-of-concept study of SPR720 for the treatment of Nontuberculous Mycobacterial Pulmonary Disease (NTM-PD) did not meet its primary endpoint, based on planned interim analysis of 16 patients Phase 3 PIVOT-PO trial of tebipenem HBr remains on track for enrollment completion in 2H 2025 Cash runway extended into mid-2026 following a reduction in workforce and restructuring of operations; Unaudited Q3 2024 ending... Read More

In vitro data on SPR719 show low propensity for resistance development in NTM-PD MAC strains when administered as a single agent and in combination with standard of care agents Study highlighting SPR720 potential benefits for prolonged combination regimens typical to NTM-PD treatment CAMBRIDGE, Mass., Oct. 16, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical... Read More

CAMBRIDGE, Mass., Oct. 02, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced the publication of data from its Phase 1 clinical trial, which assessed the intrapulmonary pharmacokinetics (PK) of SPR719. The full... Read More

CAMBRIDGE, Mass., Sept. 04, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc . (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer of Spero Therapeutics, will... Read More

Enrollment concluded in the Phase 2a proof-of-concept clinical trial evaluating SPR720 in nontuberculous mycobacterial pulmonary disease (NTM-PD); preliminary data expected in 4Q 2024 New SPR720 in-vitro resistance data to be presented at IDWeek 2024 conference in October Company announces departure of Chief Medical Officer Kamal Hamed, MD, MPH, MBA; Appoints Board member and Chair of Development Committee John C. Pottage,... Read More

CAMBRIDGE, Mass., July 29, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that management will host a conference call and live audio webcast on Monday August 5 th , 2024 at 4:30 p.m. ET to report financial... Read More

CAMBRIDGE, Mass., July 03, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on May 28, 2024, the Compensation Committee of Spero’s Board of Directors approved the grant of an aggregate of 227,500 restricted... Read More

CAMBRIDGE, Mass., June 03, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on May 28, 2024, the Compensation Committee of Spero’s Board of Directors approved the grant of 116,667 restricted stock unit awards... Read More

CAMBRIDGE, Mass., May 16, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer of Spero Therapeutics, will participate in a fireside chat and be available for... Read More

On track for topline data from SPR720 Phase 2a proof-of-concept trial in treatment-naive and treatment-experienced non-refractory NTM-PD patients, expected in 2H 2024 Enrollment ongoing in PIVOT-PO, a pivotal Phase 3 clinical trial of oral tebipenem HBr in cUTI Received FDA Fast Track designation for SPR206 for treatment of HABP/VABP due to CRABc and CRPA Cash balance of $82.3 million as of March 31, 2024; reiterate expected... Read More

CAMBRIDGE, Mass., May 08, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset 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 2024 financial results and provide an update on its business and pipeline on Wednesday, May 15,... Read More

CAMBRIDGE, Mass., May 01, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on April 29, 2024, the Compensation Committee of Spero’s Board of Directors approved the grant of an aggregate of 10,833 restricted... Read More

On track for topline data from SPR720 Phase 2a proof-of-concept trial in treatment-naive and treatment-experienced non-refractory NTM-PD patients, expected in 2H 2024 Initiated enrollment in PIVOT-PO, a pivotal Phase 3 clinical trial of oral Tebipenem HBr in cUTI Submitted IND for SPR206 and received FDA clearance to proceed with Phase 2 clinical trial Reiterate expected cash runway into late 2025 Conference call and webcast... Read More

CAMBRIDGE, Mass., March 06, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will host a conference call and live audio webcast on Wednesday, March 13, 2024 at 4:30 p.m. ET to... Read More

CAMBRIDGE, Mass., Feb. 28, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it has received clearance by the U.S. Food and Drug Administration (FDA) for its investigational new... Read More

CAMBRIDGE, Mass., Feb. 26, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing novel therapies for rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer of Spero Therapeutics, will present and be available for one-on-one... Read More

CAMBRIDGE, Mass., Jan. 31, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying and developing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on January 29, 2024, the Compensation Committee of Spero’s Board of Directors approved the grant of an... Read More

In 2H 2024, expect to provide Phase 2a topline proof-of-concept data from our wholly-owned lead program SPR720 in NTM-PD patients Initiated dosing in PIVOT-PO Phase 3 trial for tebipenem HBr in cUTI patients. Entitled to receive $95 million in development milestones, payable over two years, as part of the GSK license agreement Updated preliminary cash balance and cash runway guidance into late 2025 CAMBRIDGE, Mass., Jan. 05,... Read More

CAMBRIDGE, Mass., Jan. 02, 2024 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, announced today the first patient, first visit for PIVOT-PO, a global pivotal Phase 3 clinical trial of... Read More

Special Protocol Assessment Agreement with FDA for Phase 3 PIVOT-PO trial of tebipenem HBr; Trial expected to begin with First Patient, First Visit in 4Q 2023 Conference call and webcast at 4:30pm ET today CAMBRIDGE, Mass., Nov. 13, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing, and commercializing treatments in... Read More

CAMBRIDGE, Mass., Nov. 06, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will host a conference call and live audio webcast on Monday, November 13, 2023 at 4:30... Read More

CAMBRIDGE, Mass., Nov. 01, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer, will be available for... Read More

CAMBRIDGE, Mass., Nov. 01, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing, and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced the appointment of Esther Rajavelu as Chief Financial Officer and Chief Business Officer. Ms.... Read More

CAMBRIDGE, Mass., Oct. 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on October 27, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

CAMBRIDGE, Mass., Sept. 29, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on September 27, 2023, the Compensation Committee of Spero’s Board of Directors approved... Read More

CAMBRIDGE, Mass., Sept. 20, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer of Spero Therapeutics, will... Read More

CAMBRIDGE, Mass., Sept. 06, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Sath Shukla, President and Chief Executive Officer of Spero Therapeutics, will... Read More

CAMBRIDGE, Mass., Aug. 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on August 25, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

SPA Agreement with FDA for Phase 3 PIVOT-PO Trial of Tebipenem HBr Phase 3 PIVOT-PO trial is expected to begin with First Patient, First Visit in 4Q 2023 Sath Shukla Became President and CEO, Effective August 1 Conference call and webcast at 4:30pm ET today CAMBRIDGE, Mass., Aug. 10, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on... Read More

CAMBRIDGE, Mass., Aug. 03, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will host a conference call and live audio webcast on Thursday, August 10, 2023 at 4:30... Read More

Phase 3 PIVOT-PO trial is expected to begin with First Patient, First Visit in 4Q 2023 Spero to receive $30 million development milestone payment from GSK CAMBRIDGE, Mass., July 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in areas of high unmet need involving rare diseases and... Read More

CAMBRIDGE, Mass., June 30, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on June 22, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

Sath Shukla, current Spero Chief Financial Officer, will bring more than 20 years of strategic and financial leadership to the role of CEO, to be effective August 1, 2023 Current President and Chief Executive Officer, Ankit Mahadevia, M.D to become Chairman of the Board of Directors CAMBRIDGE, Mass., June 14, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical... Read More

CAMBRIDGE, Mass., May 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on May 25, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

Phase 2 trial of SPR720 in nontuberculous mycobacterial pulmonary disease (NTM-PD) on track for top line data readout in 1H 2024 Update on status of Special Protocol Assessment agreement for tebipenem HBr program expected mid-year 2023; initiation of Phase 3 trial in complicated urinary tract infection (cUTI) expected in 2H 2023 Conference call and webcast at 4:30 p.m. ET today CAMBRIDGE, Mass., May 11, 2023 (GLOBE NEWSWIRE)... Read More

CAMBRIDGE, Mass., May 04, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will host a conference call and live audio webcast on Thursday, May 11, 2023 at 4:30... Read More

CAMBRIDGE, Mass., April 28, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on April 21, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

CAMBRIDGE, Mass., April 26, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Spero’s management team will present and be available for one-on-one meetings at... Read More

CAMBRIDGE, Mass., April 14, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced two poster presentations at the 33 r d European Congress of Clinical Microbiology and... Read More

CAMBRIDGE, Mass., March 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on March 23, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

Initiated proof-of-concept Phase 2 trial of SPR720 in nontuberculous mycobacterial pulmonary disease (NTM-PD); top line data expected in 1H 2024 Exclusive license agreement with GSK for tebipenem HBr provided Spero with $66 million upfront, a $9 million direct equity investment, and eligibility for future milestone payments and tiered royalties Conference call and live webcast at 4:30 p.m. ET today CAMBRIDGE, Mass., March... Read More

CAMBRIDGE, Mass., March 13, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas, involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it has changed the date of its previously announced 2022 fourth quarter and full year... Read More

CAMBRIDGE, Mass., March 06, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas, involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that it will host a conference call and live audio webcast on Monday, March 13, 2023 at 4:30... Read More

CAMBRIDGE, Mass., Feb. 28, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on February 22, 2023, the Compensation Committee of Spero’s Board of Directors approved... Read More

CAMBRIDGE, Mass., Feb. 28, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) (Spero), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that Ankit Mahadevia, M.D., President and Chief Executive Officer of Spero... Read More

CAMBRIDGE, Mass., Jan. 31, 2023 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on January 27, 2023, the Compensation Committee of Spero’s Board of Directors approved the... Read More

CAMBRIDGE, Mass., Dec. 22, 2022 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a multi-asset clinical-stage biopharmaceutical company, focused on identifying, developing and commercializing treatments in high unmet need areas involving rare diseases and multi-drug resistant (MDR) bacterial infections, today announced that on December 19, 2022, the Compensation Committee of Spero’s Board of Directors approved a... Read More