No.1
Disclosure
2026/10/28 06:16
臨時報告（重要事象）（8-K）
役員の異動（就任・退任・報酬）（Item 5.02）
役員の異動（就任・退任・報酬）（Item 5.02）
SPRO Spero Therapeutics, Inc.US-listed
1 post
Spero Therapeutics, Inc. (SPRO) at a glance
Prices are from Yahoo! Finance and may be delayed. Always check the latest price before trading.
Spero Therapeutics, Inc. (SPRO) Stock Price HistoryNear a 52-week low
Spero Therapeutics, Inc. closed at $1.03 on Nov 6, 2026, −13.4% over 1 month, −58.1% over 1 year.
Price5-day MA25-day MAS&P 500Disclosures
1-Month High$1.22Oct 20
1-Month Low$1.02Nov 5
1-Week Change−2.8%vs Oct 30
1-Month Change−13.4%vs Oct 6
If you had invested $1,000 1 month ago, it would be worth $866 today (−13.4%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −5.7%, while this stock moved −13.4%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $1.03 | +0.01 | +0.98% |
| Nov 5 (Thu) | $1.02 | −0.05 | −4.67% |
| Nov 4 (Wed) | $1.07 | +0.03 | +2.88% |
| Nov 3 (Tue) | $1.04 | +0.00 | +0.00% |
| Nov 2 (Mon) | $1.04 | −0.02 | −1.89% |
| Oct 30 (Fri) | $1.06 | −0.05 | −4.50% |
| Oct 29 (Thu) | $1.11 | −0.06 | −5.13% |
| Oct 28 (Wed) | $1.17 | +0.03 | +2.63% |
| Oct 27 (Tue) | $1.14 | +0.07 | +6.54% |
| Oct 26 (Mon) | $1.07 | −0.04 | −3.60% |
Price5-day MA25-day MAS&P 500Disclosures
3-Month High$1.36Sep 22
3-Month Low$1.02Nov 5
1-Month Change−13.4%vs Oct 6
3-Month Change−18.9%vs Aug 6
If you had invested $1,000 3 months ago, it would be worth $811 today (−18.9%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved −4.3%, while this stock moved −18.9%.
Last 10 Trading Days
| Date | Close | Change | % Change |
|---|---|---|---|
| Nov 6 (Fri) | $1.03 | +0.01 | +0.98% |
| Nov 5 (Thu) | $1.02 | −0.05 | −4.67% |
| Nov 4 (Wed) | $1.07 | +0.03 | +2.88% |
| Nov 3 (Tue) | $1.04 | +0.00 | +0.00% |
| Nov 2 (Mon) | $1.04 | −0.02 | −1.89% |
| Oct 30 (Fri) | $1.06 | −0.05 | −4.50% |
| Oct 29 (Thu) | $1.11 | −0.06 | −5.13% |
| Oct 28 (Wed) | $1.17 | +0.03 | +2.63% |
| Oct 27 (Tue) | $1.14 | +0.07 | +6.54% |
| Oct 26 (Mon) | $1.07 | −0.04 | −3.60% |
Price25-day MA75-day MAS&P 500Disclosures
6-Month High$2.98Jun 4
6-Month Low$1.02Nov 5
3-Month Change−18.9%vs Aug 6
6-Month Change−59.3%vs May 6
If you had invested $1,000 6 months ago, it would be worth $407 today (−59.3%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +0.2%, while this stock moved −59.3%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $1.03 | −2.8% |
| Oct 2026 | $1.06 | −12.4% |
| Sep 2026 | $1.21 | −0.8% |
| Aug 2026 | $1.22 | +4.3% |
| Jul 2026 | $1.17 | −47.1% |
| Jun 2026 | $2.21 | −21.9% |
| May 2026 | $2.83 | +12.7% |
Price25-day MA75-day MAS&P 500Disclosures
52-Week High$2.98Jun 4
52-Week Low$1.02Nov 5
Year to Date−55.8%vs Dec 31
From 52-Week High−65.4%Jun 4
If you had invested $1,000 1 year ago, it would be worth $419 today (−58.1%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +9.6%, while this stock moved −58.1%.
Monthly Closes
| Month | Month-End Close | Monthly % |
|---|---|---|
| Nov 2026 | $1.03 | −2.8% |
| Oct 2026 | $1.06 | −12.4% |
| Sep 2026 | $1.21 | −0.8% |
| Aug 2026 | $1.22 | +4.3% |
| Jul 2026 | $1.17 | −47.1% |
| Jun 2026 | $2.21 | −21.9% |
| May 2026 | $2.83 | +12.7% |
| Apr 2026 | $2.51 | +7.3% |
| Mar 2026 | $2.34 | +7.8% |
| Feb 2026 | $2.17 | −0.9% |
| Jan 2026 | $2.19 | −6.0% |
| Dec 2025 | $2.33 | −2.9% |
| Nov 2025 | $2.40 | ― |
Price13-week MA26-week MAS&P 500
3-Year High$3.02Jun 16, 2025
3-Year Low$0.58Mar 31, 2025
Annualized Return−2.5%
Max Drawdown−67.5%
If you had invested $1,000 3 years ago, it would be worth $928 today (−7.2%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +67.1%, while this stock moved −7.2%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $1.03 | −55.8% |
| 2025 | $2.33 | ― |
Price13-week MA26-week MAS&P 500
5-Year High$16.79Nov 8, 2021
5-Year Low$0.58Mar 31, 2025
Annualized Return−42.8%
Max Drawdown−96.5%
If you had invested $1,000 5 years ago, it would be worth $61 today (−93.9%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +57.5%, while this stock moved −93.9%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $1.03 | −55.8% |
| 2025 | $2.33 | ― |
Price1-year MA2-year MAS&P 500
All-Time High$21.97Dec 2020
All-Time Low$0.58Mar 2025
Total Change−91.1%vs Oct 2017
Annualized Return−23.5%
If you had invested $1,000 in Oct 2017, it would be worth $89 today (−91.1%).Price change only; dividends and fees are not included.
Over the same period the S&P 500 moved +178.6%, while this stock moved −91.1%.
Yearly Closes
| Year | Year-End Close | Yearly % |
|---|---|---|
| 2026 (YTD) | $1.03 | −56.2% |
| 2025 | $2.35 | +113.6% |
| 2024 | $1.10 | −25.2% |
| 2023 | $1.47 | −15.0% |
| 2022 | $1.73 | −89.2% |
| 2021 | $16.01 | −17.4% |
| 2020 | $19.39 | +102.4% |
| 2019 | $9.58 | +41.9% |
| 2018 | $6.75 | −42.6% |
| 2017 | $11.75 | ― |
Daily, weekly and monthly closes (Yahoo! Finance, split-adjusted, dividends excluded). "All" covers the range Yahoo provides (from Oct 2017). Please check the latest prices before trading.
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