Stock listing
NASDAQ:SPRO Spero Therapeutics, Inc. Stock
Home listing (NASDAQ) of Spero Therapeutics, Inc.
Follow Spero Therapeutics, Inc. into a list and get an email when it puts out news.
Share price · NASDAQ:SPRO
$1.06 USD -0.05 (-4.5%)
Close on Oct 30, 2026
- Day range
- $1.05 – $1.12 USDOct 30, 2026
- Volume
- 308,863 sharesOct 30, 2026
- Market cap
- $61.73M USDAt the close on Oct 30, 2026 · price × 58.23M shares outstanding
- 52-week range
- $1.04 – $3.08 USDLowest and highest trades, Oct 31, 2025 – Oct 30, 2026
- Traded on an average day
- $737,387 USDMedian day 403,600 shares · last 3 months, Jul 30, 2026 – Oct 30, 2026
Prices by listing
| Listing | Last | Change | Volume | Open | High | Low | Previous close | Price from |
|---|---|---|---|---|---|---|---|---|
| NASDAQ:SPRO · Home | $1.06 USD | -0.05 (-4.5%) | 308,863 | $1.11 | $1.115 | $1.05 | $1.11 | Close on Oct 30, 2026 |
| Frankfurt:2HA | €0.902 EUR | +0.025 (+2.9%) | — | €0.926 | €0.962 | €0.902 | €0.877 | Close on Oct 30, 2026 |
Daily closes
Last 3 months, Jul 30, 2026 – Oct 30, 2026 · NASDAQ:SPRO · USD, adjusted for splits
| Day | Close | Change | % | Open | High | Low | Volume |
|---|---|---|---|---|---|---|---|
| $1.06 | -0.05 | -4.5% | $1.11 | $1.115 | $1.05 | 308,863 | |
| $1.11 | -0.06 | -5.1% | $1.18 | $1.18 | $1.11 | 209,416 | |
| $1.17 | +0.03 | +2.6% | $1.18 | $1.18 | $1.12 | 337,935 | |
| $1.14 | +0.07 | +6.5% | $1.08 | $1.14 | $1.04 | 507,344 | |
| $1.07 | -0.04 | -3.6% | $1.10 | $1.11 | $1.06 | 513,860 | |
| $1.11 | -0.02 | -1.8% | $1.13 | $1.13 | $1.10 | 316,200 | |
| $1.13 | -0.04 | -3.4% | $1.16 | $1.17 | $1.13 | 201,800 | |
| $1.17 | -0.05 | -4.1% | $1.21 | $1.22 | $1.165 | 265,700 | |
| $1.22 | +0.10 | +8.9% | $1.12 | $1.24 | $1.11 | 678,800 | |
| $1.12 | +0.02 | +1.8% | $1.09 | $1.13 | $1.09 | 203,000 | |
| $1.10 | -0.03 | -2.7% | $1.14 | $1.17 | $1.09 | 361,300 | |
| $1.13 | +0.01 | +0.9% | $1.12 | $1.14 | $1.11 | 233,800 | |
| $1.12 | -0.03 | -2.6% | $1.15 | $1.17 | $1.11 | 696,500 | |
| $1.15 | -0.03 | -2.5% | $1.19 | $1.203 | $1.15 | 272,500 | |
| $1.18 | -0.02 | -1.7% | $1.20 | $1.22 | $1.165 | 414,100 | |
| $1.20 | +0.06 | +5.3% | $1.14 | $1.21 | $1.13 | 438,800 | |
| $1.14 | -0.03 | -2.6% | $1.20 | $1.22 | $1.13 | 718,900 | |
| $1.17 | -0.02 | -1.7% | $1.19 | $1.19 | $1.16 | 233,600 | |
| $1.19 | +0.03 | +2.6% | $1.21 | $1.236 | $1.18 | 347,000 | |
| $1.16 | -0.03 | -2.5% | $1.17 | $1.20 | $1.15 | 935,700 | |
| $1.19 | -0.07 | -5.6% | $1.26 | $1.266 | $1.171 | 906,900 | |
| $1.26 | +0.05 | +4.1% | $1.22 | $1.31 | $1.195 | 1,039,200 | |
| $1.21 | +0.01 | +0.8% | $1.21 | $1.29 | $1.20 | 557,900 | |
| $1.20 | +0.01 | +0.8% | $1.20 | $1.22 | $1.17 | 334,900 | |
| $1.19 | -0.04 | -3.3% | $1.22 | $1.22 | $1.175 | 393,100 | |
| $1.23 | -0.02 | -1.6% | $1.27 | $1.29 | $1.21 | 541,800 | |
| $1.25 | -0.01 | -0.8% | $1.25 | $1.29 | $1.24 | 473,900 | |
| $1.26 | -0.10 | -7.4% | $1.36 | $1.398 | $1.24 | 1,402,900 | |
| $1.36 | +0.22 | +19.3% | $1.30 | $1.44 | $1.28 | 7,759,500 | |
| $1.14 | +0.01 | +0.9% | $1.14 | $1.15 | $1.12 | 319,100 | |
| $1.13 | +0.01 | +0.9% | $1.12 | $1.21 | $1.115 | 501,400 | |
| $1.12 | +0.01 | +0.9% | $1.14 | $1.14 | $1.114 | 180,100 | |
| $1.11 | -0.02 | -1.8% | $1.12 | $1.14 | $1.10 | 439,600 | |
| $1.13 | -0.01 | -0.9% | $1.14 | $1.151 | $1.11 | 224,300 | |
| $1.14 | +0.01 | +0.9% | $1.13 | $1.16 | $1.13 | 266,100 | |
| $1.13 | +0.01 | +0.9% | $1.13 | $1.15 | $1.13 | 308,600 | |
| $1.12 | -0.05 | -4.3% | $1.18 | $1.18 | $1.12 | 569,300 | |
| $1.17 | -0.02 | -1.7% | $1.20 | $1.21 | $1.17 | 367,100 | |
| $1.19 | -0.02 | -1.7% | $1.21 | $1.22 | $1.19 | 348,400 | |
| $1.21 | -0.01 | -0.8% | $1.20 | $1.22 | $1.185 | 362,900 | |
| $1.22 | 0.00 | 0.0% | $1.22 | $1.23 | $1.201 | 203,300 | |
| $1.22 | +0.02 | +1.7% | $1.20 | $1.239 | $1.20 | 169,500 | |
| $1.20 | -0.02 | -1.6% | $1.22 | $1.22 | $1.18 | 382,300 | |
| $1.22 | +0.02 | +1.7% | $1.20 | $1.23 | $1.20 | 330,200 | |
| $1.20 | -0.01 | -0.8% | $1.21 | $1.22 | $1.181 | 312,400 | |
| $1.21 | -0.01 | -0.8% | $1.22 | $1.23 | $1.18 | 538,100 | |
| $1.22 | -0.01 | -0.8% | $1.22 | $1.228 | $1.20 | 154,700 | |
| $1.23 | +0.015 | +1.2% | $1.23 | $1.26 | $1.20 | 645,500 | |
| $1.215 | -0.005 | -0.4% | $1.22 | $1.24 | $1.20 | 367,300 | |
| $1.22 | +0.01 | +0.8% | $1.22 | $1.246 | $1.21 | 359,100 | |
| $1.21 | -0.02 | -1.6% | $1.22 | $1.27 | $1.20 | 558,800 | |
| $1.23 | +0.03 | +2.5% | $1.20 | $1.24 | $1.192 | 480,200 | |
| $1.20 | +0.01 | +0.8% | $1.20 | $1.20 | $1.175 | 477,400 | |
| $1.19 | -0.04 | -3.3% | $1.21 | $1.24 | $1.19 | 299,000 | |
| $1.23 | -0.01 | -0.8% | $1.26 | $1.26 | $1.194 | 744,500 | |
| $1.24 | +0.05 | +4.2% | $1.26 | $1.30 | $1.21 | 1,292,900 | |
| $1.19 | -0.04 | -3.3% | $1.24 | $1.245 | $1.185 | 774,600 | |
| $1.23 | 0.00 | 0.0% | $1.24 | $1.25 | $1.21 | 364,100 | |
| $1.23 | -0.03 | -2.4% | $1.25 | $1.276 | $1.225 | 350,800 | |
| $1.26 | -0.01 | -0.8% | $1.27 | $1.28 | $1.24 | 459,000 | |
| $1.27 | +0.01 | +0.8% | $1.26 | $1.275 | $1.23 | 974,700 | |
| $1.26 | +0.03 | +2.4% | $1.25 | $1.28 | $1.21 | 574,900 | |
| $1.23 | +0.08 | +7.0% | $1.15 | $1.25 | $1.15 | 752,000 | |
| $1.15 | -0.02 | -1.7% | $1.19 | $1.22 | $1.125 | 1,373,000 | |
| $1.17 | -0.03 | -2.5% | $1.20 | $1.214 | $1.17 | 824,600 | |
| $1.20 | +0.01 | +0.8% | $1.20 | $1.22 | $1.175 | 486,600 |
- Ticker
- NASDAQ:SPRO
- Asset type
- Stock
- Sector
- Health care
- Industry
- Biotechnology
- Exchange
- NASDAQ
- Currency
- USD
What changed lately
Latest news release · Oct 26, 2026
Spero Therapeutics Strengthens Leadership Team to Advance Immunology Pipeline
Latest earnings call · Aug 12, 2026
Spero Therapeutics (NASDAQ:SPRO) Q2 2026 Earnings Call
Replay and transcript
Latest deck · Aug 12, 2026
Q2 2026 Earnings Presentation
Earnings · 4 slides
Calls
Replays
Spero Therapeutics (NASDAQ:SPRO) Q2 2026 Earnings Call
Wed, Aug 12, 2026 · 5:00 PM ET
Watch TranscriptSpero Therapeutics (NASDAQ:SPRO) Q2 2025 Earnings Call
Tue, Aug 12, 2025 · 4:30 PM ET
Watch TranscriptSpero Therapeutics (NASDAQ:SPRO) Q4 2024 Earnings Call
Thu, Mar 27, 2025 · 4:30 PM ET
Watch Transcript
Latest news
Spero Therapeutics Strengthens Leadership Team to Advance Immunology Pipeline
Oct 26, 2026
Closed $1.07 (-3.6%) on Oct 26, 2026
Spero Therapeutics to Participate in the Chardan 10th Annual Healthcare Conference
Oct 15, 2026
Closed $1.10 (-2.7%) on Oct 16, 2026
Spero Therapeutics Announces Inducement Grants Under Nasdaq Listing Rule 5635(c)(4)
Oct 2, 2026
Closed $1.16 (-2.5%) on Oct 5, 2026
Spero Therapeutics to Present at H.C. Wainwright 28th Annual Global Investment Conference
Sep 2, 2026
Closed $1.22 (0.0%) on Sep 3, 2026
Spero Therapeutics Announces Second Quarter 2026 Operating Results and Provides Business Update
Aug 12, 2026
Closed $1.24 (+4.2%) on Aug 13, 2026
Spero Therapeutics to Report Second Quarter 2026 Financial Results and Provide Business Update on August 12, 2026
Aug 4, 2026
Closed $1.26 (+2.4%) on Aug 5, 2026
Spero Therapeutics Appoints Debra Jeske Zack, M.D., Ph.D., as Chief Medical Officer
Jul 27, 2026
Closed $1.18 (-0.8%) on Jul 27, 2026
Spero Therapeutics Announces $105 Million Non-Recourse Non-Dilutive Financing Backed by a Portion of Utebzi Milestones & Royalties
Jul 14, 2026
Closed $1.70 (-22.0%) on Jul 14, 2026
Decks
Q2 2026 Earnings Presentation
Earnings · 4 slides · Aug 12, 2026
Investor Presentation (July 2026)
Investor deck · 28 slides · Jul 14, 2026
Investor Presentation (November 2025)
Investor deck · 20 slides · Nov 13, 2025
Investor Presentation (August 2025)
Investor deck · 19 slides · Aug 12, 2025
Spero Therapeutics, Inc. on 6ix
- Sector
- Health care
- Industry
- Biotechnology
- News releases
- 18 in the last 12 months · 110 in all · newest Oct 26, 2026 · oldest 2019
- Calls
- 16 calls with a replay · 16 with a transcript · latest Aug 12, 2026
- Decks
- 19 decks · latest Aug 12, 2026
Where Spero Therapeutics, Inc. is listed
| Listing | Exchange | Country | Currency |
|---|---|---|---|
| NASDAQ:SPRO · Home listing · This page | NASDAQ | United States | USD |
| LS Exchange:A2H63F | LS Exchange | Germany | EUR |
| Lang & Schwarz:A2H63F | Lang & Schwarz | Germany | EUR |
| BOATS:SPRO | BOATS | United States | USD |
| gettex:2HA | gettex | Germany | EUR |
| Tradegate:2HA | Tradegate | Germany | EUR |
| Dusseldorf:2HA | Dusseldorf | Germany | EUR |
| Frankfurt:2HA | Frankfurt | Germany | EUR |
| Munich:2HA | Munich | Germany | EUR |
| Stuttgart:2HA | Stuttgart | Germany | EUR |
| BIVA:SPRO | BIVA | Mexico | MXN |
| BMV:SPRO | BMV | Mexico | MXN |
Log in to ask 6ix AI your own questions about Spero Therapeutics, Inc.