Gossamer Bio Secures Up to $250M Structured Private Placement to Fund Seralutinib Through FDA Approval
GOSS sits 84% above its 52-week low of $0.114 on light trading volume (0.3× avg).
Summary
Gossamer Bio announced a structured private placement of up to $250 million, with $150 million committed, to fund seralutinib through potential FDA approval. The financing includes an initial $25 million closing, a $125 million second closing contingent on FDA acceptance of the NDA, and warrants for up to $100 million upon FDA approval.
Updates
· SEC 8-K — The Series A-1 preferred stock has a $0.14 conversion price, 4X liquidation preference, and 25,000 authorized shares.
Key Events · Financing and Capital Events · GOSS
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Up to $250M Private Placement
Gossamer Bio entered into a securities purchase agreement for a private placement of up to $250 million, with $150 million committed from institutional investors including EcoR1 Capital, RA Capital Management, and Samsara BioCapital.
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Initial $25M Closing
The initial closing on August 24, 2026 will issue pre-funded warrants for $25 million at $0.1399 per warrant, representing a common stock-equivalent price of $0.14, a discount to the current $0.2095 stock price.
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Second $125M Closing on FDA Acceptance
An additional $125 million will fund upon FDA acceptance of the seralutinib NDA in PAH, expected in 2026. The purchase price will be the lesser of $0.1399 or the five-day VWAP preceding the second closing.
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FDA Approval Warrants for $100M
At the second closing, investors will receive warrants exercisable upon FDA approval of seralutinib at $0.187 per share, potentially providing up to $100 million in additional proceeds.
Analysis · GOSS · Life Sciences
Gossamer Bio entered into a securities purchase agreement for a private placement of up to $250 million, with $150 million committed. The initial $25 million closes August 24, 2026, and an additional $125 million funds upon FDA acceptance of the seralutinib NDA. FDA Approval Warrants could add another $100 million if the drug is approved. The financing is highly dilutive at current prices — the initial pre-funded warrants are priced at $0.1399, a discount to the current $0.2095 stock price, and the second closing price may be even lower. However, the capital extends the company's cash runway into 2028, addressing the going concern warning disclosed in the recent 10-Q. The structure aligns funding with regulatory milestones, reducing near-term dilution risk if the NDA is not accepted.
How filings like this one have moved
In the 30 days to Oct 16, 2026, 44.9% of the 303 measured filings Wiseek scored 9 moved their stock by 5% or more by the next session's close. The median move was -0.26%. These are measured outcomes after filings of this importance, not a forecast for this one.
Measured one observation per ticker per day, after exclusions. Current figures: Filing Impact Tracker · open dataset
At the time of this filing, GOSS was trading at $0.21 on NASDAQ in the Life Sciences sector, with a market capitalization of approximately $77M. The 52-week trading range was $0.11 to $3.87. This filing was assessed with negative market sentiment and an importance score of 9 out of 10.