NASDAQ$GOSS
Gossamer Bio Inc · Q3 2025 earnings
Q3 2025 earnings · · After market close · Investor relations
Briefing
Gossamer Bio reported Q3 2025 collaboration revenue of $13.3M and a net loss of $48.2M ($0.21 per share).
Collaboration revenue from the Chiesi agreement rose to $13.3 million from $9.5 million a year ago while R&D spending increased on seralutinib programs. The company reported a Q3 net loss of $48.2 million, or $0.21 per share, and continues to advance PROSERA and SERANATA while managing cash runway.
- Q3 collaboration revenue $13.3M (+40% YoY); nine-month revenue $34.7M.
- Net loss $48.2M; EPS $(0.21).
- R&D expense up on seralutinib trials; workforce actions align spend with regulatory path.
- Cash and marketable securities support operations into 2027 on current resources.
Headline financials
Revenue & EPS history
Gossamer Bio · Revenue · Quarterly
$13.3M
Revenue by segment
Gossamer Bio · $17M total across 1 segment · Q1 2026
- Collaborators$17M—100.0%
Forward guidance
The filing discusses Gossamer Bio's outlook, capital priorities, and key risks, including guidance or operating targets where disclosed.
Tailwinds
- Gossamer Bio cites execution and demand supporting the near-term outlook.
- Balance sheet and capital allocation remain focal points in the filing.
Headwinds
- GAAP profitability remained under pressure in the quarter.
- Macro, competition, and input costs may pressure margins quarter to quarter.
- One-time items and segment mix can affect comparability versus prior periods.
- Clinical and regulatory timelines drive funding needs.
Historical earnings impact
How earnings announcements have historically affected this stock's price.
Avg. return before/after earnings
Based on 19 quarterly earnings reports · overlaid with Q3 2025
-0.6%
Avg return
Earnings day
-1.3%
Avg return
5 days after
-1.1%
Avg return
30 days after
43%
13 / 30 earnings
Positive
+15.2%
Q4 2022
Best reaction
-15.6%
Q1 2020
Worst reaction
| Quarter | Report date | Reaction (Day 0) | +5 days | +30 days |
|---|---|---|---|---|
| Q1 2026 | +1.2% | -34.9% | -50.9% | |
| Q4 2025 | -10.8% | -21.0% | -5.5% | |
| Q3 2025 | +2.2% | +16.9% | +44.2% | |
| Q2 2025 | -8.5% | -18.9% | +15.7% | |
| Q1 2025 | +1.0% | +9.5% | +18.1% | |
| Q4 2024 | +0.0% | +6.0% | -38.4% | |
| Q3 2024 | -0.9% | -4.4% | -15.1% | |
| Q2 2024 | +4.3% | +7.5% | +12.5% | |
| Q1 2024 | -3.2% | -5.0% | -23.2% | |
| Q4 2023 | +4.1% | -4.8% | -26.2% | |
| Q3 2023 | -12.0% | +4.7% | +73.1% | |
| Q2 2023 | -7.0% | -9.3% | -24.7% | |
| Q1 2023 | +3.7% | -11.8% | -7.4% | |
| Q4 2022 | +15.2% | +5.7% | -0.5% | |
| Q3 2022 | -0.8% | -4.2% | -14.9% | |
| Q2 2022 | +4.6% | +6.5% | +13.7% | |
| Q1 2022 | +12.5% | +34.2% | +9.5% | |
| Q4 2021 | +3.7% | +1.0% | -2.8% | |
| Q3 2021 | -1.4% | -9.1% | -16.6% | |
| Q2 2021 | -0.8% | +9.5% | +18.9% | |
| Q1 2021 | -0.7% | -0.7% | +1.7% | |
| Q4 2020 | -9.4% | -5.5% | -11.6% | |
| Q3 2020 | -0.9% | -1.3% | +4.2% | |
| Q2 2020 | +5.1% | +2.4% | -1.1% | |
| Q1 2020 | -15.6% | -11.5% | -27.8% | |
| Q4 2019 | +5.5% | +5.7% | +40.0% | |
| Q3 2019 | -4.3% | -1.2% | +12.4% | |
| Q2 2019 | -2.5% | +3.2% | +2.6% | |
| Q1 2019 | +1.3% | +3.7% | -3.9% | |
| Q4 2018 | -4.9% | -10.8% | -30.1% | |
| Q3 2018 | — | — | — | |
| Q2 2018 | — | — | — | |
| Q1 2018 | — | — | — | |
| Q4 2017 | — | — | — | |
| Q3 2017 | — | — | — | |
| Q2 2017 | — | — | — | |
| Q1 2017 | — | — | — |
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