Spero Therapeutics (SPRO) Shares Outstanding (Entity) (2016 - 2026)
Spero Therapeutics (SPRO) recorded Shares Outstanding (Entity) of 58.15 million in Q2 2026, up 3.5% from 56.19 million a year earlier and up 0.4% from the prior quarter.
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Analysis
Spero Therapeutics (SPRO) Shares Outstanding (Entity) (2016 - 2026) Analysis & Trends
For FY2025, Spero Therapeutics reported Shares Outstanding (Entity) of 56.41 million, up 3.3% from FY2024.
- Annual Shares Outstanding (Entity) has increased for ten straight years, with a five-year compound annual growth rate of 20.3% (FY2020 to FY2025).
- Across earlier years, Shares Outstanding (Entity) came in at 54.59 million in FY2024 (+3.0%), 53 million in FY2023 (+41.0%), 37.59 million in FY2022 (+16.0%) and 32.39 million in FY2021 (+44.7%).
- The Q2 2026 figure is the highest quarterly Shares Outstanding (Entity) in data going back to Q3 2016.
- On a year-over-year basis, Shares Outstanding (Entity) has increased for 31 consecutive quarters, with growth averaging 3.4% over the last eight quarters.
- The year-over-year growth in Shares Outstanding (Entity) has ranged between 2.5% (Q1 2024) and 60.5% (Q1 2023) over the last five years.
- Per Business Quant, the preceding three quarters came in at 57.89 million (Q1 2026), 56.41 million (Q4 2025) and 56.31 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Entity.) (Qtr) |
|---|---|---|---|---|---|
| 1 | Eli Lilly | 1,136.97 Bn | 1,105.55 Bn | 19.71 Bn | 941.36 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 | - |
| 6 | Astrazeneca | 261.07 Bn | 234.76 Bn | 12.86 Bn | - |
| 7 | Amgen | 237.00 Bn | 192.40 Bn | 7.24 Bn | 540.60 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 | - | 58.15 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 58.15 Mn |
| Mar 31, 2026 | 57.89 Mn |
| Dec 31, 2025 | 56.41 Mn |
| Sep 30, 2025 | 56.31 Mn |
| Jun 30, 2025 | 56.19 Mn |
| Mar 31, 2025 | 55.90 Mn |
| Dec 31, 2024 | 54.59 Mn |
| Sep 30, 2024 | 54.31 Mn |
| Jun 30, 2024 | 54.01 Mn |
| Mar 31, 2024 | 53.87 Mn |
| Dec 31, 2023 | 53.00 Mn |
| Sep 30, 2023 | 53.00 Mn |
| Jun 30, 2023 | 52.57 Mn |
| Mar 31, 2023 | 52.57 Mn |
| Dec 31, 2022 | 37.59 Mn |
| Sep 30, 2022 | 42.86 Mn |
| Jun 30, 2022 | 35.07 Mn |
| Mar 31, 2022 | 32.76 Mn |
| Dec 31, 2021 | 32.39 Mn |
| Sep 30, 2021 | 32.22 Mn |
API Access
Spero Therapeutics Shares Outstanding (Entity) 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-entity&ticker=SPRO&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "shares-outstanding-entity", "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-entity&ticker=SPRO&period=max&api_key=YOUR_API_KEY");
const data = await res.json();