Spero Therapeutics, Inc.

Spero Therapeutics, Inc.

SPROยทNASDAQ

$2.83

+6.9%
HealthcareBiotechnology

Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying, developing, and commercializing treatments for multi-drug resistant (MDR) bacterial infections and rare diseases in the United States. The company's product candidates include tebipenem pivoxil hydrobromide (HBr), an oral carbapenem-class antibiotic to treat complicated urinary tract infections, including pyelonephritis for adults; SPR206, a direct acting IV-administered agent to treat MDR Gram-negative bacterial infections in the hospital; and SPR720, an oral antibiotic for the treatment of non-tuberculous mycobacterial pulmonary disease. It has license agreement with Meiji Seika Pharma Co., Ltd. to support the development of tebipenem HBr; license agreement with Everest Medicines to develop, manufacture, and commercialize SPR206 in Greater China, South Korea, and Southeast Asian countries; collaboration agreement with Bill & Melinda Gates Medical Research Institute to develop SPR720 for the treatment of lung infections caused by Mycobacterium tuberculosis; and license agreement with Vertex Pharmaceuticals Incorporated for patents relating to SPR720, as well as SPR719, an active metabolite. The company was founded in 2013 and is headquartered in Cambridge, Massachusetts.

At a Glance

Live Snapshot
Market Cap$163.86M
EPS0.1500
P/E Ratio15.23
Earnings Date08/11/2026
3Y+23.0%
5Y+539.0%
10Y+17697.0%
3Y-118.0%
5Y-111.0%
10Y-134.0%
3Y+63.0%
5Y-85.0%
10Y-56.0%
Spero Therapeutics, Inc.

Spero Therapeutics, Inc. Profit Bridge

SPRO ยท NASDAQ
Revenue59.62M
Cost of Goods Sold (0.00)
Gross Profit59.62M
Operating Expenses (59.64M)
Operating Income-24.00K
Interest Expense (0.00)
Other Income/Expense8.86M
Pretax Income8.83M
Income Tax (261.00K)
Net Income8.57M
Net Income
8.57M

Profitability Analysis

Gross Margin

100.0%

Exceptional pricing power and cost management. The company retains over half of revenue after direct costs.

Operating Margin

-0.0%

Operating losses indicate the core business is unprofitable. Requires restructuring or revenue growth.

Net Profit Margin

14.4%

Strong net margins indicate efficient operations and favorable tax/interest management.

Effective Tax Rate

3.0%

Below-average tax rate suggests effective tax planning, favorable jurisdictions, or tax credits.

Profitability Insight

Margin squeeze alert: Healthy gross margins but weak operating margins suggest excessive operating expenses. Cost optimization could unlock significant value.

Spero Therapeutics, Inc. Income Statement

SPRO โ€ข NASDAQ

Spero Therapeutics, Inc. Income StatementDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
REVENUE
59.6M
48M
103.8M
48.6M
3.1M
9.3M
4.7M
4M
2M
335K
0.0
GROSS PROFIT
(0.0)
(96.8M)
(51.4M)
(0.0)
(0.0)
(67M)
(65.8M)
(33.9M)
(32.9M)
(26.3M)
(11K)
59.6M
-48.8M
52.3M
48.6M
3.1M
-57.7M
-61M
-29.9M
-30.9M
-26M
-11K
OPERATING INCOME
(59.6M)
(24.6M)
(30.9M)
(90.8M)
(91M)
(21.4M)
(68M)
(42.8M)
(41.7M)
(33.6M)
(13.3M)
(21.2M)
(23.7M)
(25.6M)
(36.5M)
(41.7M)
(21.4M)
(15.6M)
(12.9M)
(10.8M)
(7.2M)
(2.2M)
(38.5M)
(96.8M)
(51.4M)
(47.6M)
(64.5M)
(69.4M)
(65.8M)
(33.9M)
(32.9M)
(26.3M)
(11.1M)
-24K
-73.4M
21.5M
-42.2M
-88M
-79.1M
-63.2M
-42.8M
-41.7M
-33.2M
-13.3M
PRE-TAX INCOME
(0.0)
(0.0)
(0.0)
(2.6M)
(1.9M)
(0.0)
(0.0)
(303K)
(303K)
(0.0)
(0.0)
2.5M
4.7M
3.9M
-1.5M
-1.6M
401K
1.3M
841K
0.0
0.0
0.0
(0.0)
-95.9M
-46.1M
(6.7M)
-15.2M
-69.4M
-13.4M
(1.1M)
-4.4M
(0.0)
(0.0)
8.9M
4.8M
3.9M
-4.2M
-1.8M
833K
2.3M
1.1M
1.8M
580K
174K
8.8M
-68.6M
25.4M
-46.4M
-89.8M
-78.3M
-60.9M
-41.7M
-46.1M
-32.6M
-13.2M
NET INCOME
(261K)
(0.0)
(2.6M)
(0.0)
(0.0)
(0.0)
-750K
(0.0)
-363K
(0.0)
(0.0)
8.6M
-68.6M
22.8M
-46.4M
-89.8M
-78.3M
-60.9M
-41.7M
-46.1M
-25.5M
-10.2M

SEC Filings

SPRO - Filing history and reports

Filing TypeFiling DatePeriod EndingFiscal YearActions
10-Q

10-Q 2026 Q1

Q1

May 13, 2026
March 31, 2026
2026
8-K

8-K 2026

N/A

May 13, 2026
May 13, 2026
2026
DEF 14A

DEF 14A 2026

N/A

April 27, 2026
June 23, 2026
2026
8-K

8-K 2026

N/A

March 26, 2026
March 26, 2026
2026
10-K

10-K 2025 FY

FY

March 26, 2026
December 31, 2025
2025
8-K

8-K 2026

N/A

January 30, 2026
January 30, 2026
2026
8-K

8-K 2025

N/A

December 19, 2025
December 19, 2025
2025
8-K

8-K 2025

N/A

November 13, 2025
November 13, 2025
2025
10-Q

10-Q 2025 Q3

Q3

November 13, 2025
September 30, 2025
2025
10-Q

10-Q 2025 Q2

Q2

August 12, 2025
June 30, 2025
2025
Showing 1 to 10 of 165 filings