Gossamer Bio Inc
🔔 Watch stock
Assessment
Our Rating
A journalistic assessment by our editorial team at the time of the deep dive — it rates the company, not the entry point. Not investment advice and not a solicitation to buy or sell.
We found at least one documented issue that threatens the company itself — regardless of how the stock is currently valued.
Why this colour
Red here is not a judgment on the price and not a verdict on the science — the seralutinib signals in the risk subgroup deserve to be taken seriously, and the open regulatory path is a genuine opportunity. Red follows from four documented findings on substance, each of which would carry the rating on its own: a stockholders' deficit of $161.5 million as of March 31, 2026; an explicit going-concern statement in the quarterly report and the auditor's report; a cash runway well under four quarters against continuing outflows and a monthly-tested minimum liquidity of $40 million; and a listing deadline of October 5, 2026 whose only extension would require a move to the Nasdaq Capital Market, which in turn triggers a cash repurchase offer on the new notes. If approval arrives together with durable financing, this rating deserves a fresh look. Until then the substance itself is at stake, not merely the price. The decision is yours.
What the thesis turns on
Assessment: Opportunities & Risks
Gossamer Bio is the acquittal trap in its purest form: the announcement of July 27, 2026 — an NDA planned for September, worldwide rights back, $5 million from Chiesi — is real and relevant. It changes nothing about the numbers underneath: a stockholders' deficit of $161.5 million, a going-concern statement, $57.0 million of cash against a monthly-tested $40 million covenant, a Nasdaq deadline of October 5, 2026, and a share count that jumped to 488,846,722 in a single day, June 4, 2026. Whoever invests here buys a sequence: submission in September, acceptance for filing and written FDA confirmation by December, a capital raise before the covenant breaks, approval in 2027. Not investment advice.
Regulatory path
After the Pre-NDA Type B meeting in mid-June 2026 the FDA, per the minutes, characterized the degree of statistical significance and the magnitude of the treatment effect in PROSERA as questions of review rather than of filing (8-K of July 27, 2026). The application is planned for September 2026 — as of the data cut-off it has therefore neither been submitted nor accepted for filing by the agency; only upon acceptance would a decision in the third quarter of 2027 be possible. After a trial that missed its primary endpoint, that is considerably more than the base case.
Trial result
On February 23, 2026 the Phase 3 PROSERA study produced a treatment effect of +13.3 meters of walking distance at a p-value of 0.0320 — the prespecified threshold was α = 0.025. The primary endpoint is therefore missed and the secondary endpoints are formally uninterpretable. The signals in the prespecified risk subgroup (+20.0 meters, n = 234) and in the NT-proBNP biomarker (−120.4 ng/L) are consistent, but they do not replace the evidence that was missed.
Balance sheet & going concern
As of March 31, 2026 there was a stockholders' deficit of $161.5 million (end of 2024: positive $29.5 million), an accumulated deficit of $1,485.6 million, and an explicit going-concern statement in the quarterly report and in the auditor's report on the 2025 annual report. Cash and marketable securities fell within six months from $136.9 million to a preliminary $57.0 million.
Debt covenants
The indenture of June 4, 2026 requires minimum liquidity of $40 million, tested monthly and first for the fiscal month ending June 30, 2026 — with $57.0 million on hand and a recent quarterly burn of about $42 million there is little room. Lowering the threshold to $20 million or $10 million requires equity raises of $100 million to $150 million and written FDA confirmation of acceptance by December 1, 2026.
Dilution & listing
The note exchange of June 4, 2026 lifted the share count from 234,696,282 to 488,846,722; up to 667 million further shares can arise from conversions and warrants, and authorized capital was raised to 4 billion. In parallel the Nasdaq compliance date of October 5, 2026 runs for a $1.00 minimum bid price; the most recent price recorded in a mandatory filing was $0.1351 on July 24, 2026 (Schedule I to the SC 13D/A). A second 180-day period is available only on a move to the Nasdaq Capital Market — which triggers a cash repurchase offer on the new notes.
Revenue
All reported revenue came from the Chiesi agreement: $114.7 million in 2024, $48.5 million in 2025 and $17.0 million in the first quarter of 2026; on a rolling basis the twelve months to March 31, 2026 came to $55.5 million. With the termination on July 23, 2026 that line ends; the offset is a one-time $5 million, and Gossamer now carries the development and pre-commercial costs alone.
Worth Noting
Gossamer Bio did not reach our research list through a ranked list — the company appears in none of our stock scanners (as of July 28, 2026; the lists are recomputed daily), which is to be expected given no product revenue, a loss and negative equity. The hook was the EDGAR filing stream: a single Form 8-K of July 27, 2026 carrying six item numbers at once.
This analysis deliberately quotes no market capitalization and no derived multiple. The reason: the most recent price recorded in a mandatory filing ($0.1351 on July 24, 2026, Schedule I to the SC 13D/A) multiplied by 488,846,722 shares gives about $66 million, while market data show about $97.5 million for the same period — a divergence of roughly 48 percent and thus far more than one fifth. On top of that an authorized but unexecuted reverse split is pending.
Every date in this analysis is sourced from a mandatory filing: NDA submission planned for September 2026, FDA acceptance confirmation as a covenant condition by December 1, 2026, Nasdaq compliance date October 5, 2026, springing maturity of the new notes March 2, 2027, maturity of the old notes June 2027. Not to be confused: Gossamer Bio, Inc. (GOSS) is not the same as similarly named private companies without SEC registration.
Stock Watch
This analysis is as of August 26, 2026. Stock Watch will tell you what's changed at GOSS since then.
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Price history
Chart
Interactive price chart (TradingView).
52-week range: 0.136 $ to 12.80 $ · Last price: 11.90 $ (As of: September 17, 2026)
Key figures
Key figures at a glance
Every figure we hold for this stock, grouped by topic. The question mark next to a label explains what the number means.
Basics
Performance
Technical Indicators
Calculated from the price history · as of 09/18/2026
Valuation
Profitability
Balance Sheet & Safety
Growth
Dividend
This stock currently pays no dividend.
Quality & Screener
Highlighted are things our editorial team noticed: green = stands out as strong, red = deserves a closer look. No single metric is a verdict on its own — always read it in context.
Comparison
Industry comparison
The stock alongside the largest companies in the same group. The median row is the middle value of the companies shown above — not of the whole industry.
Industry: Biotechnology
| Company | Market cap ($B) | P/E | EV/EBITDA | Gross Margin % | EBIT Margin % | Sales Growth (Year) % | Perf. 1Y % |
|---|---|---|---|---|---|---|---|
| Gossamer Bio Inc GOSS | 0.1 | – | -0.4 | 100.0 | – | -57.7 | -95.0 |
| Vertex Pharmaceuticals Inc VRTX | 130.6 | 31.3 | 24.5 | 55.0 | 38.1 | 9.6 | 33.4 |
| Regeneron Pharmaceuticals Inc REGN | 82.0 | 19.9 | 13.1 | 44.5 | 20.7 | 1.0 | 35.5 |
| Moderna Inc MRNA | 62.7 | – | 4.6 | -66.0 | -131.1 | -39.2 | 532.3 |
| argenx NV ARGX | 61.9 | 38.1 | 34.2 | 59.1 | 32.0 | 89.6 | 30.9 |
| Revolution Medicines Inc RVMD | 40.9 | – | -9.7 | -174,708.6 | 0.0 | -100.0 | 338.3 |
| BeiGene, Ltd. ONC | 40.0 | 63.1 | 34.1 | 88.9 | 19.1 | 40.2 | 6.4 |
| Alnylam Pharmaceuticals Inc ALNY | 32.6 | 61.8 | 28.4 | 79.7 | 23.0 | 65.2 | -48.1 |
| Royalty Pharma Plc RPRX | 32.5 | 31.8 | 19.6 | 95.8 | 100.3 | 5.1 | 68.6 |
| Median of companies shown | 40.9 | 34.9 | 19.6 | 59.1 | 21.8 | 5.1 | 33.4 |
Based on the most recently reported figures. Only stocks from the same trading venue are lined up, so the market caps are counted in one currency. Compare in a chart →
Fiscal years
Annual Figures
Fiscal years from the audited annual reports, oldest first. EBIT is the operating profit before interest and taxes; total assets are everything the company owns.
Revenue, operating income and net income per fiscal year $M
Revenue Operating income Net income
| Fiscal Year | Revenue ($M) | EBIT ($M) | Net Income ($M) | EPS ($) | Operating Cash Flow ($M) | Equity ($M) | Total Assets ($M) |
|---|---|---|---|---|---|---|---|
| 2016 | 0 | 0 | 0 | -0.01 | 0 | 0 | 0 |
| 2017 | 0 | -7 | -7 | -0.27 | -6 | -7 | 0 |
| 2018 | 0 | -149 | -147 | -2.43 | -51 | -120 | 239 |
| 2019 | 0 | -186 | -181 | -3.30 | -145 | 352 | 427 |
| 2020 | 0 | -211 | -243 | -3.55 | -176 | 321 | 539 |
| 2021 | 0 | -216 | -234 | -3.13 | -189 | 121 | 344 |
| 2022 | 0 | -219 | -229 | -216.97 | -187 | 12 | 272 |
| 2023 | 0 | -184 | -180 | -94.26 | -159 | 63 | 312 |
| 2024 | 115 | -60 | -57 | -19.99 | -3 | 29 | 315 |
| 2025 | 48 | -163 | -170 | -59.64 | -171 | -123 | 172 |
Quarters
Quarterly Figures
Each bar is one quarter, the last one is the most recent. Use the switch to step through the individual figures.
Revenue & Profit
Cash Flow
Balance Sheet
Margins
Per Share
Click the chart or tab into it, then use ← and → to step through the periods.
None of the selected stocks reports this metric. Pick another metric or switch between annual and quarterly.
· Total · per year
These companies report in different currencies — switch on “Indexed” or pick a margin for a fair comparison.
The figures could not be loaded right now.
Source: fundamental data
| Quarter | EPS (Earnings Per Share) | EPS YoY (%) | Sales ($M) | Sales YoY (%) | Net Margin (%) | OCF ($M) | FCF ($M) |
|---|---|---|---|---|---|---|---|
| 2024: Q4 | -0.15 | – | 9 | 38.30 | -352.20 | -36 | -36 |
| 2025: Q1 | -0.16 | – | 10 | – | -370.50 | -40 | -40 |
| 2025: Q2 | -0.17 | -181.60 | 12 | -88.00 | -333.10 | -47 | -47 |
| 2025: Q3 | -0.21 | – | 13 | 40.20 | -362.70 | -36 | -36 |
| 2025: Q4 | -0.21 | – | 14 | 47.10 | -342.30 | -48 | -48 |
| 2026: Q1 | -0.20 | – | 17 | 71.50 | -275.20 | -39 | -39 |
| 2026: Q2 | -0.08 | 52.90 | 9 | -20.00 | 183.70 | -39 | -39 |
What Do These Terms Mean?
- EPS (Earnings Per Share):
- Quarterly profit divided by the total share count — how much of the profit works out to a single share.
- YoY (Year over Year):
- Change versus the same quarter a year ago — this is how you compare without seasonal distortion (e.g. the holiday shopping season).
- Sales:
- All revenue for the quarter, before any costs are deducted — the top line of the income statement.
- Net Margin:
- What percentage of sales is left over as profit in the end. Negative means the company is posting a loss.
- OCF (Operating Cash Flow):
- The cash that actually flows into the till from the core business during the quarter — harder to dress up than book profit.
- FCF (Free Cash Flow):
- Operating cash flow minus capital expenditures — the money that's genuinely free to use, say for paying down debt, buybacks, or dividends.
Screening
Appears in These Scanners
This stock currently matches 14 of our scanner strategies — each hit links to the scanner.
Breakout & Setup
Momentum & Trend
Research
Risk & Weakness
- Bankruptcy Study: Stacked Warning Signals
- Below the 50- & 200-SMA
- Beneish M-Score
- Going Concern (Distress Proxy)
- Insolvency Radar: Cash Running Low
- RS Weakness (≤10)
- Stage 4 (Downtrend)
- Stan Weinstein: Stage 4
- Stan Weinstein: Stage 4B-
- Weakness Cluster
Only genuine hits from verified scanners count; pure ranking metrics (P/E, P/S, and similar, which just sort the whole universe) don't count as a hit. Scanners marked in red are red-flag signals (risk/short scanners) — appearing there is not a seal of approval. View all scanners
Outlook
Analysts & Price Target
Combined picture of the price targets and recommendations of every analyst covering the stock. Price targets are expectations for the next 12 months, not promises — and they often follow the price rather than predict it.
Distribution of Recommendations
Estimates by Fiscal Year
| Fiscal Year | EPS Estimate ($) | EPS Range ($) | Revenue Estimate ($M) | Expected Growth | Analysts |
|---|---|---|---|---|---|
| 12/31/2026 | -16.32 | -20.16 – -11.20 | 36 | 72.8% | 3 |
| 12/31/2027 | -15.62 | -28.80 – -2.88 | 20 | 4.3% | 5 |
Average of the analyst estimates for the coming fiscal years. The range shows how far the most optimistic and the most cautious estimate sit apart — the wider it is, the less certain the expectation.
Valuation
What is priced in?
Free cash flow over the past twelve months is negative, which rules out a serious reverse calculation. Any growth rate only makes a negative cash flow more negative; no present value comes out of it. What the price reflects here is therefore not a stream of cash flows, but the expectation that there will be one at all.
A simplified model calculation — not a forecast and not a recommendation.
AI classification
AI Rating
Gossamer Bio verkauft keine KI-Produkte und nennt KI auch nicht als Bedrohung des eigenen Biotech-Geschäftsmodells, erklärt im Geschäftsbericht (10-K) für 2025 aber ausdrücklich, KI punktuell im eigenen Betrieb einzusetzen — der einzige belastbare KI-Bezug in den sechs ausgewerteten Berichten, ohne Angabe zu Anwendungsfeld oder Umfang.
View the full file — quotes, sources, reviewed filings
„In addition, we selectively use artificial intelligence, or AI, in our business."
Darüber hinaus setzen wir in unserem Geschäftsbetrieb punktuell Künstliche Intelligenz (KI) ein.
10-K · 2026-03-17 · View SEC filing
„Further, the cost to comply with such laws, regulations, or decisions and/or guidance interpreting existing laws, could be significant and would increase our operating expenses (such as by imposing additional reporting obligations regarding our use of AI)."
Zudem könnten die Kosten für die Einhaltung solcher Gesetze, Vorschriften oder Entscheidungen bzw. Auslegungshinweise zu bestehenden Gesetzen erheblich sein und unsere Betriebsausgaben erhöhen (etwa durch zusätzliche Berichtspflichten zu unserem Einsatz von KI).
10-K · 2026-03-17 · View SEC filing
Filings Reviewed: 10-Q 2026-05-15 · 10-Q 2025-11-05 · 10-Q 2025-08-05 · 10-Q 2025-05-15 · 10-K 2026-03-17 · 10-K 2025-03-13
Rated on July 28, 2026 · How the Rating Is Built
Growth
Growth Score
Ten checks against the annual reports — each one passed counts a point.
- Revenue grows by more than 15% a year over three years no data
- More than 10% revenue growth is expected for the coming year 45.5%
- Share count grows by less than 3% a year 39.3%
- Revenue growth plus cash-flow margin add up to at least 40 ("Rule of 40") -411.2%
- Gross margin at 40% or higher and without meaningful erosion no data
- Goodwill from acquisitions does not grow faster than revenue 0.0%
- Net debt below twice EBITDA failed
- Operating cash flow covers the profits of the last three years 73 m
- Return on capital at 15% or higher, or up versus two years ago -150.0%
- Insiders hold at least 10% or are net buyers 1.7%
A criterion without figures counts neither as passed nor as failed; a score is only produced from 7 judgeable criteria upwards. Source: fundamental data. All ten criteria in detail
Quality check
AAQS
0/10The AAQS (AlleAktien Quality Score) checks 10 quality criteria on growth, profitability, and balance-sheet strength — per the methodology developed and published by AlleAktien, calculated by us from our own fundamental data. A stock counts as a quality stock from 9 out of 10 points. Where a company has a shorter listing history, we calculate over the fiscal years available (at least five).
- Sales growth 10Y > 5% –
- Exp. sales growth 3Y > 5% -35.8%
- EBIT growth 10Y > 5% –
- Exp. EBIT growth 3Y > 5% -35.8%
- Net debt < 4x EBIT –
- EBIT positive, 10Y straight 0
- Max. EBIT decline < 50% –
- Return on equity > 15% –
- ROCE > 15% -150.0%
- Expected return > 10% -197.6%
View stocks with the full AAQS score · Read the methodology at AlleAktien
Source: fundamental data
The company
About the Company
Gossamer Bio, Inc., ein biopharmazeutisches Unternehmen in der klinischen Phase, konzentriert sich auf die Entwicklung und Vermarktung von Seralutinib zur Behandlung von pulmonaler Hypertonie und pulmonal-arterieller Hypertonie in den USA.
- Employees
- 161
- Headquarters
- San Diego, CA
- Address
- 3115 Merryfield Row, 92121 San Diego, United States
- Phone
- 858 684 1300
- Website
- gossamerbio.com
- IPO Date
- 02/08/2019
- ISIN
- US38341P1021
- Stock Split
- 1:80 on 09/11/2026
Management
| Name | Title | Birth Year |
|---|---|---|
| Faheem Hasnain | Co-Founder, CEO, President & Chairman | 1958 |
| Bryan Giraudo | COO & CFO | 1975 |
| Robert Paul Smith Jr. | Chief Commercial Officer | 1969 |
| Christian Waage J.D. | Executive VP, General Counsel & Secretary | 1967 |
| Jeanine Anthony | Senior Vice President of Marketing | – |
| Deanna Weber | Executive Vice President of Human Resources | – |
| Robert F. Roscigno Ph.D. | Senior Vice President of Clinical Development of Pulmonary Vascular Disease | 1966 |
| Caryn L. Peterson | Chief Development Officer | 1959 |
| Kelly Dawson | Senior Vice President & Program Team Lead | – |
| Conor O'Donovan | Senior Vice President of Regulatory Affairs | – |
Executives per the latest required filings; titles kept in their original language. Source: fundamental data.
Filings
Company Filings (8-K)
An 8-K is the filing a US company must use to disclose material events immediately — takeovers, changes at the top, major contracts or payment troubles, for instance. The links open the original document at the US Securities and Exchange Commission (SEC).
- 09/16/2026 Gossamer Bio, Inc. (GOSS): Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers: Compensatory Arrangements of Certain Officers; Financial Statements and Exhibits SEC ↗
- 09/11/2026 Gossamer Bio, Inc. (GOSS): Material Modifications to Rights of Security Holders; Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year; Other Events; Financial Statements and Exhibits SEC ↗
- 09/09/2026 Gossamer Bio, Inc. (GOSS): Other Events; Financial Statements and Exhibits SEC ↗
- 09/03/2026 Gossamer Bio, Inc. (GOSS): Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year; Financial Statements and Exhibits SEC ↗
- 08/26/2026 Gossamer Bio, Inc. (GOSS): Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year; Financial Statements and Exhibits SEC ↗
- 08/21/2026 Gossamer Bio, Inc. (GOSS): Entry into a Material Definitive Agreement; Unregistered Sales of Equity Securities; Amendments to Articles of Incorporation or Bylaws; Change in Fiscal Year; Regulation FD Disclosure; Financial Statements and Exhibits SEC ↗
- 08/13/2026 Gossamer Bio, Inc. (GOSS): Results of Operations and Financial Condition; Financial Statements and Exhibits SEC ↗
- 07/27/2026 Gossamer Bio, Inc. (GOSS): Entry into a Material Definitive Agreement; Termination of a Material Definitive Agreement; Results of Operations and Financial Condition; Regulation FD Disclosure; Other Events; Financial Statements and Exhibits SEC ↗
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.