Quick Answer
Gossamer Bio, Inc. reported Shares Outstanding of 233.68 million shares for fiscal year 2025.
Gossamer Bio, Inc. Shares Outstanding — Annual History
| Fiscal Year | Shares Outstanding | YoY Change |
|---|---|---|
| 2025 | 233.68M | +3.1% |
| 2024 | 226.60M | +0.5% |
| 2023 | 225.41M | +138.7% |
| 2022 | 94.42M | +24.6% |
| 2021 | 75.75M | +2.5% |
| 2020 | 73.87M | +19.9% |
| 2019 | 61.64M | +665.5% |
| 2018 | 8.05M | — |
Quarterly Shares Outstanding
| Quarter Ending | Shares Outstanding | YoY | QoQ |
|---|---|---|---|
| September 30, 2025 | 231.31M | +2.1% | +1.8% |
| June 30, 2025 | 227.32M | +0.5% | +0.0% |
| March 31, 2025 | 227.22M | +0.4% | +0.3% |
| December 31, 2024 | 226.60M | +0.5% | +0.0% |
| September 30, 2024 | 226.60M | +0.5% | +0.2% |
| June 30, 2024 | 226.23M | +137.0% | +0.0% |
| March 31, 2024 | 226.22M | +137.0% | +0.4% |
| December 31, 2023 | 225.41M | +138.7% | +0.0% |
- Gossamer Bio, Inc. showed an increase of +3.1% in Shares Outstanding compared to the prior fiscal year.
- Over the 2018–2025 period, Gossamer Bio, Inc.’s shares outstanding has grown by 2802.3% (from 8.05 million shares to 233.68 million shares).
- The most recent figure is from Gossamer Bio, Inc.’s fiscal year 2025 report (Form 10-K), filed with the SEC on March 17, 2026.
- All figures are sourced from SEC EDGAR XBRL filings, last verified June 17, 2026.
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