Upstream Bio (UPB) Shares Outstanding (Diluted) (2023 - 2026)
Upstream Bio (UPB) reported Shares Outstanding (Diluted) of 54.57 million for Q2 2026, up 1.5% from 53.77 million a year earlier and up 0.4% from the prior quarter.
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Analysis
Upstream Bio (UPB) Shares Outstanding (Diluted) (2023 - 2026) Analysis & Trends
For FY2025, Upstream Bio posted Shares Outstanding (Diluted) of 53.85 million, up 293.6% from FY2024.
- By year, Shares Outstanding (Diluted) came in at 13.68 million in FY2024 (+363.2%) and 2.95 million in FY2023.
- The Q2 2026 figure ranks as the highest quarterly Shares Outstanding (Diluted) in data going back to Q3 2023.
- Year over year, Shares Outstanding (Diluted) has now increased in each of the last three quarters, with growth averaging 132.4% over the last five quarters.
- Per Business Quant data, the three quarters before Q2 2026 came in at 54.33 million (Q1 2026), 53.85 million (Q4 2025) and 53.93 million (Q3 2025).
Peer Set
Peer Comparison
| # | Company | Market Cap | Enterprise Value | Gross Profit (Qtr) | Shares Outstanding (Dil.) (Qtr) |
|---|---|---|---|---|---|
| 1 | Johnson & Johnson | 638.12 Bn | 556.64 Bn | 17.26 Bn | 2.44 Bn |
| 2 | AbbVie | 462.60 Bn | 435.75 Bn | 12.70 Bn | 1.77 Bn |
| 3 | Merck | 358.70 Bn | 313.13 Bn | 12.21 Bn | 2.47 Bn |
| 4 | Novartis Ag | 272.16 Bn | 228.03 Bn | 11.24 Bn | 1.96 Bn |
| 5 | Astrazeneca | 250.36 Bn | 223.92 Bn | 12.86 Bn | 1.56 Bn |
| 6 | Amgen | 227.87 Bn | 183.27 Bn | 7.24 Bn | 544.00 Mn |
| 7 | Gilead Sciences | 184.97 Bn | 159.08 Bn | 6.22 Bn | 1.24 Bn |
| 8 | Pfizer | 162.61 Bn | 109.56 Bn | 10.94 Bn | 5.70 Bn |
| 9 | Vertex Pharmaceuticals | 132.45 Bn | 104.46 Bn | 2.84 Bn | 255.20 Mn |
| 10 | Upstream Bio | 288.64 Mn | 288.64 Mn | -3.29 Mn | 54.57 Mn |
Historic Data
Download Data
Historic Data
| Date | Value |
|---|---|
| Jun 30, 2026 | 54.57 Mn |
| Mar 31, 2026 | 54.33 Mn |
| Dec 31, 2025 | 53.85 Mn |
| Sep 30, 2025 | 53.93 Mn |
| Jun 30, 2025 | 53.77 Mn |
| Mar 31, 2025 | 53.62 Mn |
| Dec 31, 2024 | 13.68 Mn |
| Sep 30, 2024 | 3.02 Mn |
| Jun 30, 2024 | 3.01 Mn |
| Mar 31, 2024 | 3.00 Mn |
| Dec 31, 2023 | 2.95 Mn |
| Sep 30, 2023 | 2.96 Mn |
API Access
Upstream Bio Shares Outstanding (Diluted) 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-diluted&ticker=UPB&period=max&api_key=YOUR_API_KEYimport requests
url = "https://data.businessquant.com/historic"
params = {"slug": "shares-outstanding-diluted", "ticker": "UPB", "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-diluted&ticker=UPB&period=max&api_key=YOUR_API_KEY");
const data = await res.json();