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+63.0%
5Y-85.0%
10Y-56.0%
3Y-100.0%
5Y-100.0%
10Y-100.0%
3Y-100.0%
5Y-100.0%
10Y-100.0%
SPRO

Spero Therapeutics, Inc. Cash Conversion Engine

SPRO ยท NASDAQ
Net Income8.57M
Depreciation & Amortization0.00
Stock-Based Compensation4.33M
Change in Working Capital0.00
Others-25.52M
Capital Expenditures0.00
Free Cash Flow-12.62M

Cash Flow Quality Analysis

FCF Conversion Rate

-147.3%

Negative free cash flow despite positive earnings raises concerns about cash generation ability or heavy capital requirements.

FCF Growth Trend

+46.2%

Strong FCF growth demonstrates improving cash generation and business momentum. Positive signal for sustainability.

Working Capital Impact

+$0.00

Neutral working capital impact. Changes in current assets and liabilities balanced out.

Cash Flow Quality Insight

Cash flow concerns: Despite profitability, the company is burning cash. Review working capital management, CapEx levels, and sustainability of current operations.

Spero Therapeutics, Inc. Cash Flow Statement

SPRO โ€ข NASDAQ

Spero Therapeutics, Inc. Cash Flow StatementDec 2025Dec 2024Dec 2023Dec 2022Dec 2021Dec 2020Dec 2019Dec 2018Dec 2017Dec 2016Dec 2015
OPERATING ACTIVITIES
8.6M
-68.6M
22.8M
-46.4M
-89.8M
-78.3M
-60.9M
-41.7M
-39.9M
-32.6M
-13.2M
0.0
2K
367K
1.5M
1.1M
761K
750K
409K
363K
279K
11K
0.0
0.0
0.0
0.0
0.0
0.0
-808K
0.0
83K
-580K
-174K
4.3M
7.8M
7.9M
0.0
0.0
4.9M
3.8M
2.7M
1.4M
180K
21K
-25.5M
1M
6.3M
15.1M
11.4M
151K
356K
-50K
-1.5M
4.6M
3.5M
(0.0)
(99K)
(2.2M)
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
0.0
36.3M
-70.4M
22.1M
12.9M
-13.4M
6.8M
-1.1M
443K
-792K
170K
-12.6M
-23.4M
-33M
-7.7M
-64.3M
-85.9M
-50M
-39.6M
-39.1M
-29M
-9.6M
INVESTING ACTIVITIES
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
-157K
-314K
-2.4M
-27K
-830K
-232K
(0.0)
(0.0)
(0.0)
(0.0)
(39K)
(0.0)
-29.8M
(83.2M)
-1.2M
(0.0)
(0.0)
(0.0)
(0.0)
(0.0)
-27M
-43.9M
-45.7M
-89M
-130.2M
(0.0)
(0.0)
(0.0)
0.0
0.0
0.0
60.8M
51.5M
56.4M
118.8M
49.5M
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
29.8M
-83.2M
-27K
0.0
0.0
(0.0)
(0.0)
(0.0)
(33.8M)
(7.7M)
(10.5M)
(29.5M)
-83.2M
-27K
-830K
-232K
FINANCING ACTIVITIES
0.0
0.0
221K
24.9M
36.6M
78.7M
15.8M
70.5M
77.7M
0.0
0.0
0.0
0.0
0.0
-54.5M
47.5M
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
0.0
1.2M
350K
-977K
-4.7M
8.5M
7.9M
0.0
0.0
221K
-29.6M
84.1M
130.9M
16.1M
69.5M
116.1M
34.4M
15.3M
CASH FLOW SUMMARY
0.0
0.0
0.0
0.0
-1.0
0.0
0.0
0.0
0.0
0.0
0.0
-12.6M
-23.4M
-32.8M
-3.5M
27.4M
55.5M
-4.4M
-53.3M
77M
4.6M
5.4M
52.9M
76.3M
109.1M
112.6M
85.2M
29.7M
34.1M
87.3M
10.3M
5.7M
256K
40.3M
52.9M
76.3M
109.1M
112.6M
85.2M
29.7M
34.1M
87.3M
10.3M
5.7M
-12.6M
-23.4M
-33M
-7.7M
0.0
-86M
-50.3M
-42.1M
-39.1M
-29.8M
-9.8M

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