$2.83
+6.9%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.
Chief Executive Officer, Chief Financial Officer, President & Treasurer
Compensation
$668,290
Chief Human Resource Officer
Chief Operating Officer
Compensation
$657,072
Co-Founder & Director
Compensation
$176,110
Senior Vice President of Clinical Development
Senior Vice President of Controller
Senior Vice President of Finance & Business Operations
During the last 12 months, insiders have sold $404K worth of SPRO shares, with no buying activity reported.
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25.2K
63.35K
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102.1K
229.30K
-229K
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0.00
40.3K
95.44K
-95K
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16.29K
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-$16K
No buying activity
Rajavelu Esther
Officer: See Remarks
$287K
Keutzer Timothy
Officer: Chief Operating Officer
$105K
Mahadevia Ankit
Director
$13K
Strong bearish signal with $404K net selling. Heavy insider selling may indicate concerns about valuation or near-term prospects.
Very poor ratio. Heavy selling with minimal buying suggests insiders may be concerned about valuation or outlook.
Heavy recent selling activity. Recent insider sales notably exceed purchases—may warrant investigation into company developments.
3 insider sellers vs. 0 buyers. Widespread selling across multiple insiders may signal concerns.
Multiple red flags: Heavy selling, numerous sellers, and continued recent selling create a concerning pattern. Investigate fundamental drivers and consider whether company guidance or industry conditions have deteriorated.
SPRO - Filing history and reports
| Filing Type | Filing Date | Period Ending | Fiscal Year | Actions |
|---|---|---|---|---|
DEF 14A DEF 14A 2026 N/A | April 27, 2026 | June 23, 2026 | 2026 | |
DEF 14A DEF 14A 2025 N/A | April 28, 2025 | June 12, 2025 | 2025 | |
DEF 14A DEF 14A 2024 N/A | April 16, 2024 | May 29, 2024 | 2024 | |
DEF 14A DEF 14A 2023 N/A | September 01, 2023 | October 05, 2023 | 2023 | |
DEF 14A DEF 14A 2022 N/A | August 05, 2022 | September 15, 2022 | 2022 | |
DEF 14A DEF 14A 2021 N/A | July 06, 2021 | August 17, 2021 | 2021 | |
DEF 14A DEF 14A 2020 N/A | September 30, 2020 | October 27, 2020 | 2020 | |
DEF 14A DEF 14A 2019 N/A | April 26, 2019 | June 05, 2019 | 2019 | |
DEF 14A DEF 14A 2018 N/A | April 27, 2018 | June 05, 2018 | 2018 |
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