Spero Therapeutics (SPRO) Shares Outstanding (2016 - 2026)
Spero Therapeutics (SPRO) reported Shares Outstanding of 57.97 million for Q2 2026, up 3.5% from 56.03 million a year earlier and up 1.2% from the prior quarter.
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Analysis
Spero Therapeutics (SPRO) Shares Outstanding (2016 - 2026) Analysis & Trends
For FY2025, Spero Therapeutics posted Shares Outstanding of 56.02 million, up 3.7% from FY2024.
- Shares Outstanding has increased for ten consecutive years, with a five-year compound annual growth rate of 20.1% (FY2020 to FY2025).
- By year, Shares Outstanding came in at 54.04 million in FY2024 (+2.5%), 52.7 million in FY2023 (+40.2%), 37.59 million in FY2022 (+21.7%) and 30.9 million in FY2021 (+38.0%).
- The Q2 2026 figure ranks as the highest quarterly Shares Outstanding in data going back to Q3 2016.
- Year over year, Shares Outstanding has now increased in each of the last 31 quarters, with growth averaging 3.4% over the last eight quarters.
- Across the past five years, year-over-year growth in Shares Outstanding ran from 1.9% in Q1 2024 to 61.1% in Q1 2023.
- Per Business Quant data, the three quarters before Q2 2026 came in at 57.28 million (Q1 2026), 56.02 million (Q4 2025) and 56.28 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Qtr) |
|---|---|---|---|---|---|
| 1 | Eli Lilly | 1,136.97 Bn | 1,105.55 Bn | 19.71 Bn | 892.40 Mn |
| 2 | Johnson & Johnson | 619.72 Bn | 538.25 Bn | 17.26 Bn | 2.41 Bn |
| 3 | AbbVie | 503.40 Bn | 476.52 Bn | 12.70 Bn | 1.77 Bn |
| 4 | Merck | 370.15 Bn | 324.53 Bn | 12.21 Bn | 2.47 Bn |
| 5 | Novartis Ag | 298.64 Bn | 262.63 Bn | 11.24 Bn | 1.94 Bn |
| 6 | Astrazeneca | 261.07 Bn | 234.76 Bn | 12.86 Bn | 1.55 Bn |
| 7 | Amgen | 237.00 Bn | 192.40 Bn | 7.24 Bn | 540.00 Mn |
| 8 | Gilead Sciences | 191.24 Bn | 165.43 Bn | 6.22 Bn | 1.24 Bn |
| 9 | Pfizer | 170.31 Bn | 116.96 Bn | 10.94 Bn | 5.70 Bn |
| 10 | Spero Therapeutics | 68.40 Mn | -127.38 Mn | - | 57.97 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 57.97 Mn |
| Mar 31, 2026 | 57.28 Mn |
| Dec 31, 2025 | 56.02 Mn |
| Sep 30, 2025 | 56.28 Mn |
| Jun 30, 2025 | 56.03 Mn |
| Mar 31, 2025 | 55.38 Mn |
| Dec 31, 2024 | 54.04 Mn |
| Sep 30, 2024 | 54.12 Mn |
| Jun 30, 2024 | 53.96 Mn |
| Mar 31, 2024 | 53.52 Mn |
| Dec 31, 2023 | 52.70 Mn |
| Sep 30, 2023 | 52.71 Mn |
| Jun 30, 2023 | 52.57 Mn |
| Mar 31, 2023 | 52.53 Mn |
| Dec 31, 2022 | 37.59 Mn |
| Sep 30, 2022 | 35.88 Mn |
| Jun 30, 2022 | 32.98 Mn |
| Mar 31, 2022 | 32.61 Mn |
| Dec 31, 2021 | 30.90 Mn |
| Sep 30, 2021 | 32.13 Mn |
API Access
Spero Therapeutics Shares Outstanding API
Pull this series into your own models, spreadsheets and apps with the Business Quant
Historical Metrics API. The request below matches the chart above — change the
frequency, period or values and it follows. Swap YOUR_API_KEY for your own key.
https://data.businessquant.com/historic?slug=shares-outstanding&ticker=SPRO&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "shares-outstanding", "ticker": "SPRO", "period": "max", "api_key": "YOUR_API_KEY"}
data = requests.get(url, params=params).json()const res = await fetch("https://data.businessquant.com/historic?slug=shares-outstanding&ticker=SPRO&period=max&api_key=YOUR_API_KEY");
const data = await res.json();