SPRO

Spero Therapeutics Inc
NASDAQHEALTHCAREBIOTECHNOLOGY

Key Statistics

Market Cap
$71.63M
P/E Ratio
8.79
EPS
$0.14
Beta
1.48
52W High
$3.08
52W Low
$1.08
50-Day MA
$1.86
200-Day MA
$2.31
Dividend Yield
Profit Margin
15.70%
Forward P/E
PEG Ratio
0.00

About Spero Therapeutics Inc

Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying, developing, and commercializing novel treatments for multidrug resistant (MDR) bacterial infections and rare diseases in the United States. The company is headquartered in Cambridge, Massachusetts.

Official WebsiteUSAFY End: December

Fundamentals

Revenue (TTM)$47.00M
Gross Profit (TTM)$26.46M
EBITDA$7.16M
Operating Margin14.10%
Return on Equity19.20%
Return on Assets7.19%
Revenue/Share (TTM)$0.82
Book Value$0.91
Price-to-Book1.62
Price-to-Sales (TTM)1.52
EV/Revenue0.533
EV/EBITDA3.46
Quarterly Earnings Growth (YoY)75.30%
Quarterly Revenue Growth (YoY)-95.60%
Shares Outstanding$58.23M
Float$46.20M
% Insiders22.61%
% Institutions17.55%

Historical Volatility

HV 10-Day
51.95%
HV 20-Day
59.58%
HV 30-Day
90.98%
HV 60-Day
96.85%
HV Rank
84.9%

Volatility is currently contracting

Latest News

Spero Therapeutics Q2 Earnings Call Highlights

Spero Therapeutics NASDAQ: SPRO used its second-quarter update to outline a strategic shift toward immune-mediated diseases, supported by the FDA approval of Utebzi and a new licensing agreement for SP001, an antibody candidate the company plans to develop initially for IgG4-related disease.

MarketBeat8/13/2026Positive
Spero Therapeutics Announces Inducement Grant Under Nasdaq Listing Rule 5635(c)(4)

CAMBRIDGE, Mass., Aug. 05, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today announced that on July 22, 2026, the Compensation Committee of Spero's Board of Directors approved a grant, to be made on August 3rd, of an aggregate of 324,622 stock options and 162,311 restricted stock unit awards (RSUs) to a new employee under the Spero Therapeutics, Inc. 2019 Inducement Equity Incentive Plan, as amended (2019 Inducement Plan).

GlobeNewsWire8/5/2026Neutral
Spero Therapeutics to Report Second Quarter 2026 Financial Results and Provide Business Update on August 12, 2026

CAMBRIDGE, Mass., Aug. 04, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today announced that announced that it will report its financial results for the second quarter ended June 30, 2026 on Wednesday, August 12, 2026, after market close.

GlobeNewsWire8/4/2026Neutral
Spero Therapeutics Appoints Debra Jeske Zack, M.D., Ph.D., as Chief Medical Officer

Dr. Zack brings more than 25 years of leadership in developing therapeutics for immune-mediated diseases Appointment strengthens Spero's clinical leadership team as the Company advances SP001, a Phase 2-ready third-generation anti-CD40L antibody for IgG4-related disease (IgG4-RD) and other immune-mediated conditions CAMBRIDGE, Mass., July 27, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today announced the appointment of Debra Jeske Zack, M.D.

GlobeNewsWire7/27/2026Neutral
Spero Therapeutics: 'Buy' On Utebzi Royalty Deal For Funding And SP001 In-Licensing

Spero Therapeutics is initiated with a "Buy" rating, driven by its strategic pivot to immunology and strong non-dilutive financing. SPRO secured FDA approval for Utebzi and a $105M royalty deal, enabling funding for SP001 development without shareholder dilution. SP001, a third-generation anti-CD40L antibody, targets IgG4-RD and Sjögren's disease, with phase 2 trials planned for 2027 and a differentiated, B-cell-sparing MOA.

Seeking Alpha7/14/2026Positive
Spero Therapeutics Announces $105 Million Non-Recourse Non-Dilutive Financing Backed by a Portion of Utebzi Milestones & Royalties

CAMBRIDGE, Mass., July 14, 2026 (GLOBE NEWSWIRE) --  Spero Therapeutics, Inc. (Nasdaq: SPRO), a clinical-stage biopharmaceutical company focused on advancing next-generation medicines in immunology and inflammation, today announced a $105 million non-recourse non-dilutive royalty financing transaction with affiliates of Healthcare Royalty, a business of KKR (HCRx). Under the agreement, HCRx will receive a portion of future milestone and royalty payments associated with sales of Utebzi™ (tebipenem pivoxil). The proceeds will primarily be used to support advancement of Spero's lead immunology drug candidate, SP001, a Phase 2-ready, Fc-silent, third-generation anti-CD40L monoclonal antibody with potential for development across a range of immune-mediated diseases.

GlobeNewsWire7/14/2026Neutral
Innovent Biologics and Spero Therapeutics Announce Exclusive License for IBI355 (SP001), a Phase 2-Ready Third-Generation Anti-CD40L Antibody

Under the terms of the agreement, Spero will receive exclusive global rights, excluding Greater China, to develop, research, manufacture, and commercialize IBI355 (Spero R&D code: SP001) Innovent will receive an upfront payment, and is eligible to receive development, regulatory and commercial milestone payments, totaling approximately US$1.1 billion, as well as tiered royalties on net sales Spero plans to initiate a Phase 2 trial for IBI355 in Q2 2027 in IgG4-related disease (IgG4-RD), a serious, chronic fibroinflammatory condition with significant treatment burden and limited therapeutic options Innovent plans to initiate a Phase 2 trial in China by early 2027 for Sjögren's disease (SjD), a chronic autoimmune disorder with limited therapeutic options SAN FRANCISCO, CAMBRIDGE, Mass., and SUZHOU, China, July 14, 2026 /PRNewswire/ -- Innovent Biologics, Inc. (01801.HK) and Spero Therapeutics, Inc. (Nasdaq: SPRO) today announced an exclusive license agreement for IBI355 (Spero R&D code: SP001), a third-generation Fc-silent anti-CD40L antibody.

PRNewsWire7/14/2026Neutral
Spero Therapeutics and Innovent Biologics Announce Exclusive License for SP001 (IBI355), a Phase 2-Ready Third-Generation Anti-CD40L Antibody

CAMBRIDGE, Mass. and SAN FRANCISCO and SUZHOU, China, July 14, 2026 (GLOBE NEWSWIRE) -- Spero Therapeutics, Inc. (Nasdaq: SPRO) and Innovent Biologics, Inc. (01801.HK) today announced an exclusive license agreement for SP001 (Innovent R&D code: IBI355), a third-generation Fc-silent anti-CD40L antibody. Spero will receive exclusive rights to develop, research, manufacture, and commercialize SP001 worldwide, excluding Greater China, where Innovent retains rights. Spero currently expects to advance SP001 into a Phase 2 study in IgG4-RD patients in Q2 2027; Innovent expects to initiate a Phase 2 trial in China for SjD by early 2027.

GlobeNewsWire7/14/2026Neutral

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Data last updated: 8/18/2026