Market Cap 127.38M
Revenue (ttm) 66.80M
Net Income (ttm) 8.57M
EPS (ttm) N/A
PE Ratio 9.25
Forward PE N/A
Profit Margin 12.83%
Debt to Equity Ratio 0.00
Volume 629,500
Avg Vol 1,113,554
Day's Range N/A - N/A
Shares Out 57.90M
Stochastic %K 54%
Beta 1.49
Analysts Sell
Price Target $4.50

Company Profile

Spero Therapeutics, Inc., a clinical-stage biopharmaceutical company, focuses on identifying and developing novel treatments for multi-drug resistant (MDR) bacterial infections and rare diseases in the United States. The company's product candidates include Tebipenem HBr (tebipenem pivoxil hydrobromide), an oral carbapenem-class antibiotic to treat complicated urinary tract infections, including pyelonephritis for adult patients, which has completed second Phase 3 trial. It has license agreement...

Industry: Biotechnology
Sector: Healthcare
Phone: 857 242 1600
Address:
675 Massachusetts Avenue, 14th Floor, Cambridge, United States
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:26 AM
$SPRO $GSK $NUVL wilmer hale, leerink, mintz, pwc, ropes & gray ... someone in Boston knows something imo CLOSE BIZ -- then go watch the Boston Pops at the Hatch Shell Ampitheatre on the Charles River Esplanade .... if it isn't too hot
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:23 AM
$SPRO Mintz Levin is SPRO corporate law firm for a long time -- not sure if Mintz totally lost Spero now that Wilmer Hale is doing stuff. But Mintz wading into reverse merger PIPE deals like with RallyBio and Longwood Fund portfolio company Avenzo Therapeutics Mintz is a serious white shoe law firm particularly in IP / life sciences in Boston market. (wilmer hale serious too)
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:18 AM
$SPRO Leerink advised $GSK in the $NUVL deal https://investors.nuvalent.com/2026-06-09-GSK-enters-agreement-to-acquire-Nuvalent,-Inc
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:15 AM
$SPRO or Leerink Partners?
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:53 AM
$SPRO $GSK growth pivot probably requires about 400-500 million net cash on balance sheet for 3rd party reverse merger target to accept ... 350-500 million seems like sweet spot for Candid Therapeutics, Korsana Bio, Obsidian, Avenzo deals since March.
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:48 AM
doubtful. Put another way, $SPRO retains about 8-10% of tebi rights. Let's call to 10% for round numbers. What you are saying is Tebi is worth $10 billion today. ~600 million UPFFONT gets it done imo Let's go $GSK
1 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:23 AM
Paul Hastings, eh? $SPRO $LGND ? $XOMA ? $KLRA $GSK ?
0 · Reply
IDDoc
IDDoc Jul. 3 at 10:57 PM
$SPRO No potential competition active on clinicaltrials.gov means moat for years If history guides, number of use cases could double over the next 10 years. ROW also huge SPRO mgmt may be holding out for much more than $1 Billion upfront.
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 3 at 6:50 PM
$SPRO I suppose if laying off ~10 staff, it would be good to do after the holiday break alongside transaction details. Probably salary out to Sept 15 and then some form of cash severance/accelerated equity vesting.
1 · Reply
BxxZ
BxxZ Jul. 3 at 2:56 PM
$SPRO $GSK SM is closed but nonetheless Esther is fighting hard & negotiating the final outcome..... She & the Spro Board are genuine hard workers & hard work is always 10fold repaid (min!)..... So - do the extra mile and end Story nr.1, for the SH to fully embrace the bright path into New Growth Era!!! 🤣🤣🤣
0 · Reply
Latest News on SPRO
Spero Therapeutics Transcript: AGM 2026

Jun 23, 2026, 9:00 AM EDT - 11 days ago

Spero Therapeutics Transcript: AGM 2026


GSK, Spero Therapeutics announce FDA approval of Utebzi

2026-06-17T15:17:18.000Z - 17 days ago

GSK, Spero Therapeutics announce FDA approval of Utebzi

GSK


Spero Therapeutics Earnings release: Q1 2026

May 13, 2026, 4:00 PM EDT - 7 weeks ago

Spero Therapeutics Earnings release: Q1 2026


Spero Therapeutics Quarterly report: Q1 2026

May 13, 2026, 4:00 PM EDT - 7 weeks ago

Spero Therapeutics Quarterly report: Q1 2026


Spero Therapeutics Proxy statement: Proxy filing

Apr 27, 2026, 8:00 AM EDT - 2 months ago

Spero Therapeutics Proxy statement: Proxy filing


Spero Therapeutics Proxy statement: Proxy filing

Apr 27, 2026, 8:00 AM EDT - 2 months ago

Spero Therapeutics Proxy statement: Proxy filing


Spero Therapeutics Proxy statement: Proxy filing

Apr 13, 2026, 8:00 AM EDT - 2 months ago

Spero Therapeutics Proxy statement: Proxy filing


Spero Therapeutics Earnings release: Q4 2025

Mar 26, 2026, 4:00 PM EDT - 3 months ago

Spero Therapeutics Earnings release: Q4 2025


Spero Therapeutics Annual report: Q4 2025

Mar 26, 2026, 4:00 PM EDT - 3 months ago

Spero Therapeutics Annual report: Q4 2025


Spero Therapeutics Earnings release: Q3 2025

Nov 13, 2025, 4:00 PM EST - 8 months ago

Spero Therapeutics Earnings release: Q3 2025


Spero Therapeutics Quarterly report: Q3 2025

Nov 13, 2025, 4:00 PM EST - 8 months ago

Spero Therapeutics Quarterly report: Q3 2025


Spero Therapeutics Earnings Call Transcript: Q2 2025

Aug 12, 2025, 4:30 PM EDT - 11 months ago

Spero Therapeutics Earnings Call Transcript: Q2 2025


Spero Therapeutics Quarterly report: Q2 2025

Aug 12, 2025, 4:30 PM EDT - 11 months ago

Spero Therapeutics Quarterly report: Q2 2025


Spero Therapeutics Earnings release: Q2 2025

Aug 12, 2025, 4:30 PM EDT - 11 months ago

Spero Therapeutics Earnings release: Q2 2025


Spero Therapeutics Slides: Corporate Presentation

Jun 16, 2025, 7:00 AM EDT - 1 year ago

Spero Therapeutics Slides: Corporate Presentation


Spero Therapeutics Earnings release: Q1 2025

May 13, 2025, 4:00 PM EDT - 1 year ago

Spero Therapeutics Earnings release: Q1 2025


Spero Therapeutics Quarterly report: Q1 2025

May 13, 2025, 4:00 PM EDT - 1 year ago

Spero Therapeutics Quarterly report: Q1 2025


Spero Therapeutics Proxy statement: Proxy Filing

Apr 28, 2025, 8:00 AM EDT - 1 year ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Proxy statement: Proxy Filing

Apr 28, 2025, 8:00 AM EDT - 1 year ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Earnings Call Transcript: Q4 2024

Mar 27, 2025, 4:30 PM EDT - 1 year ago

Spero Therapeutics Earnings Call Transcript: Q4 2024


Spero Therapeutics Annual report: Q4 2024

Mar 27, 2025, 4:30 PM EDT - 1 year ago

Spero Therapeutics Annual report: Q4 2024


Spero Therapeutics Earnings release: Q4 2024

Mar 27, 2025, 4:30 PM EDT - 1 year ago

Spero Therapeutics Earnings release: Q4 2024


Spero Therapeutics reports Q4 EPS (38c), consensus (31c)

2025-03-27T20:20:55.000Z - 1 year ago

Spero Therapeutics reports Q4 EPS (38c), consensus (31c)


Spero Therapeutics announces interim leadership changes

2025-01-10T12:31:40.000Z - 1 year ago

Spero Therapeutics announces interim leadership changes


Spero Therapeutics downgraded to Hold from Buy at TD Cowen

2024-11-18T12:41:28.000Z - 1 year ago

Spero Therapeutics downgraded to Hold from Buy at TD Cowen


Spero Therapeutics reports Q3 EPS (32c), consensus (36c)

2024-11-14T21:20:42.000Z - 1 year ago

Spero Therapeutics reports Q3 EPS (32c), consensus (36c)


Spero Therapeutics Earnings release: Q3 2024

Nov 14, 2024, 12:00 AM EST - 1 year ago

Spero Therapeutics Earnings release: Q3 2024


Spero Therapeutics Quarterly report: Q3 2024

Nov 14, 2024, 12:00 AM EST - 1 year ago

Spero Therapeutics Quarterly report: Q3 2024


Spero Therapeutics Earnings Call Transcript: Q2 2024

Aug 5, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Earnings Call Transcript: Q2 2024


Spero Therapeutics Quarterly report: Q2 2024

Aug 5, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Quarterly report: Q2 2024


Spero Therapeutics Earnings release: Q2 2024

Aug 5, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Earnings release: Q2 2024


Spero Therapeutics Quarterly report: Q1 2024

May 15, 2024, 4:00 PM EDT - 2 years ago

Spero Therapeutics Quarterly report: Q1 2024


Spero Therapeutics Earnings release: Q1 2024

May 15, 2024, 4:00 PM EDT - 2 years ago

Spero Therapeutics Earnings release: Q1 2024


Spero Therapeutics Proxy statement: Proxy Filing

Apr 16, 2024, 8:00 AM EDT - 2 years ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Proxy statement: Proxy Filing

Apr 16, 2024, 8:00 AM EDT - 2 years ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Registration statement: Registration Filing

Mar 15, 2024, 8:00 AM EDT - 2 years ago

Spero Therapeutics Registration statement: Registration Filing


Spero Therapeutics Earnings Call Transcript: Q4 2023

Mar 13, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Earnings Call Transcript: Q4 2023


Spero Therapeutics Annual report: Q4 2023

Mar 13, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Annual report: Q4 2023


Spero Therapeutics Earnings release: Q4 2023

Mar 13, 2024, 4:30 PM EDT - 2 years ago

Spero Therapeutics Earnings release: Q4 2023


Spero Therapeutics Provides Corporate Update and 2024 Outlook

Jan 5, 2024, 8:05 AM EST - 2 years ago

Spero Therapeutics Provides Corporate Update and 2024 Outlook


Spero Therapeutics Earnings Call Transcript: Q3 2023

Nov 13, 2023, 4:30 PM EST - 2 years ago

Spero Therapeutics Earnings Call Transcript: Q3 2023


Spero Therapeutics Quarterly report: Q3 2023

Nov 13, 2023, 4:30 PM EST - 2 years ago

Spero Therapeutics Quarterly report: Q3 2023


Spero Therapeutics Earnings release: Q3 2023

Nov 13, 2023, 4:30 PM EST - 2 years ago

Spero Therapeutics Earnings release: Q3 2023


Spero Therapeutics Slides: Investor Presentation

Nov 1, 2023, 7:45 AM EDT - 2 years ago

Spero Therapeutics Slides: Investor Presentation


Spero Therapeutics Proxy statement: Proxy Filing

Sep 1, 2023, 8:00 AM EDT - 3 years ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Proxy statement: Proxy Filing

Aug 22, 2023, 8:00 AM EDT - 3 years ago

Spero Therapeutics Proxy statement: Proxy Filing


Spero Therapeutics Earnings Call Transcript: Q2 2023

Aug 10, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Earnings Call Transcript: Q2 2023


Spero Therapeutics Quarterly report: Q2 2023

Aug 10, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Quarterly report: Q2 2023


Spero Therapeutics Earnings release: Q2 2023

Aug 10, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Earnings release: Q2 2023


Spero Therapeutics Earnings Call Transcript: Q1 2023

May 11, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Earnings Call Transcript: Q1 2023


Spero Therapeutics Quarterly report: Q1 2023

May 11, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Quarterly report: Q1 2023


Spero Therapeutics Earnings release: Q1 2023

May 11, 2023, 4:30 PM EDT - 3 years ago

Spero Therapeutics Earnings release: Q1 2023


Spero Therapeutics to Present at Upcoming Investor Conference

Apr 26, 2023, 8:05 AM EDT - 3 years ago

Spero Therapeutics to Present at Upcoming Investor Conference


MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:26 AM
$SPRO $GSK $NUVL wilmer hale, leerink, mintz, pwc, ropes & gray ... someone in Boston knows something imo CLOSE BIZ -- then go watch the Boston Pops at the Hatch Shell Ampitheatre on the Charles River Esplanade .... if it isn't too hot
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:23 AM
$SPRO Mintz Levin is SPRO corporate law firm for a long time -- not sure if Mintz totally lost Spero now that Wilmer Hale is doing stuff. But Mintz wading into reverse merger PIPE deals like with RallyBio and Longwood Fund portfolio company Avenzo Therapeutics Mintz is a serious white shoe law firm particularly in IP / life sciences in Boston market. (wilmer hale serious too)
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:18 AM
$SPRO Leerink advised $GSK in the $NUVL deal https://investors.nuvalent.com/2026-06-09-GSK-enters-agreement-to-acquire-Nuvalent,-Inc
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 1:15 AM
$SPRO or Leerink Partners?
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:53 AM
$SPRO $GSK growth pivot probably requires about 400-500 million net cash on balance sheet for 3rd party reverse merger target to accept ... 350-500 million seems like sweet spot for Candid Therapeutics, Korsana Bio, Obsidian, Avenzo deals since March.
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:48 AM
doubtful. Put another way, $SPRO retains about 8-10% of tebi rights. Let's call to 10% for round numbers. What you are saying is Tebi is worth $10 billion today. ~600 million UPFFONT gets it done imo Let's go $GSK
1 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 4 at 12:23 AM
Paul Hastings, eh? $SPRO $LGND ? $XOMA ? $KLRA $GSK ?
0 · Reply
IDDoc
IDDoc Jul. 3 at 10:57 PM
$SPRO No potential competition active on clinicaltrials.gov means moat for years If history guides, number of use cases could double over the next 10 years. ROW also huge SPRO mgmt may be holding out for much more than $1 Billion upfront.
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 3 at 6:50 PM
$SPRO I suppose if laying off ~10 staff, it would be good to do after the holiday break alongside transaction details. Probably salary out to Sept 15 and then some form of cash severance/accelerated equity vesting.
1 · Reply
BxxZ
BxxZ Jul. 3 at 2:56 PM
$SPRO $GSK SM is closed but nonetheless Esther is fighting hard & negotiating the final outcome..... She & the Spro Board are genuine hard workers & hard work is always 10fold repaid (min!)..... So - do the extra mile and end Story nr.1, for the SH to fully embrace the bright path into New Growth Era!!! 🤣🤣🤣
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 2 at 9:27 PM
Apparently an FDA approval for a biotech shitco that owns 10% of a drug gets same reaction as a biotech shitco that owns 100% of its drug which gets a CRL. $SPRO vs $UNCY 3+ days after FDA
0 · Reply
BxxZ
BxxZ Jul. 2 at 8:46 PM
$SPRO $GSK How low can U go? (not Spro - actually GSK!!!) Fuj in fej - MUPM
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 2 at 7:04 PM
No. The scientists in The People's Republic of Cambridge are killing this stock by not unlocking value. $SPRO
0 · Reply
GeneralGainz
GeneralGainz Jul. 2 at 6:40 PM
$SPRO This is WAY too low after getting FDA approval. Going to load another 10k shares from my $NFLX profits after earnings into this!
1 · Reply
Inc82
Inc82 Jul. 2 at 5:59 PM
$SPRO The shorts are killing this stock.
0 · Reply
Inc82
Inc82 Jul. 2 at 5:57 PM
$SPRO what a disaster!
0 · Reply
DDel
DDel Jul. 2 at 5:24 PM
$SPRO bought more, again. gsk for the win.
0 · Reply
Zalsalman
Zalsalman Jul. 2 at 3:37 PM
Hello $SPRO Is anyone from the company here? 👀 Why is everything so quiet?
1 · Reply
BxxZ
BxxZ Jul. 2 at 1:59 PM
$SPRO $GSK The stock market does not predict any tebi rights buy or RM being on the horizon!!! What they do predict is stubburn intention of the mgt. to go alone on their New Growth phase project - meaning new shares to be issued (up to 120m for measly 240-250m????) and dillution of current shareholders into oblivion (less than 1/3 rd of ownership) - all just for mgt's wish for their new journey!!! Well Esther - there is another path ; prepare Cost saving plan & make everybody apart from yourself (actually being only a shell also you could work part-time!!!) redundant. All U need is external accountancy&legal support!!! To much to ask being dependant only on GSK checks?! Doubt so!!! Makes far more sense than your alone fantasy growth story (current leadership is not up to it!!!)...... So, in case WS is correct do not dream of "yoir own story" and if there eis no discusion with GSK just do your job and reduce costs!!!!
3 · Reply
BxxZ
BxxZ Jul. 2 at 11:58 AM
$SPRO $GSK Seems Forrest is tired.... Better let him rest through summer to be fully "reffiled" in Sept/Oct. Lost opp's & tight dates do not matter. Procrastination is becoming his new "motto". 🤣🤣🤣
0 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 1 at 11:54 PM
Hope $SPRO doesnt sell for 40 cents on the dollar like the Celts did with Jaylen Brown
1 · Reply
MikeyMcDermott
MikeyMcDermott Jul. 1 at 9:50 PM
fwiw, the $CYCN and Korsana Biosciences reverse merger deal was executed on April 1, 2026. Is there something special about first day of new quarter or these reverse merger deals? Either something about SEC reporting / clean break for a new quarter or confirmation bias cc $SPRO $GSK
0 · Reply