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Gossamer Bio, Inc. (GOSS)

Gossamer Bio, Inc. at a glance — key fundamentals, SEC filings, insider buying and selling, and earnings dates.

Gossamer Bio, Inc. (GOSS) is a Biotechnology company based in US with a market capitalization of $49.4M. Free cash flow was negative at -$171.3M. This page tracks GOSS's SEC filings, insider buying and selling, earnings dates, and key fundamentals in one place.

US · 144 employees · IPO Feb 8, 2019

Valuation

Valuation & price

$0.21 · as of May 23, 2026 · -94.5% vs 52w high

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P/E ratio

Latest-FY diluted EPS

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P/B ratio

Market cap ÷ book equity

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Dividend yield

Price — last 12 months

$3.79$1.97$0.16Jul 25Dec 25Jun 26Jul 7, 25$1.25Jul 9, 25$1.36Jul 11, 25$1.36Jul 15, 25$1.45Jul 17, 25$1.71Jul 21, 25$1.75Jul 23, 25$1.87Jul 25, 25$1.84Jul 29, 25$1.96Jul 31, 25$2.04Aug 4, 25$2.17Aug 6, 25$1.98Aug 8, 25$1.76Aug 12, 25$1.93Aug 14, 25$1.96Aug 18, 25$1.99Aug 20, 25$1.95Aug 22, 25$2.34Aug 27, 25$2.46Aug 29, 25$2.47Sep 3, 25$2.58Sep 5, 25$2.94Sep 9, 25$2.77Sep 11, 25$3.46Sep 15, 25$3.18Sep 17, 25$2.99Sep 19, 25$3.05Sep 23, 25$3.08Sep 25, 25$2.78Sep 29, 25$2.82Oct 1, 25$2.49Oct 3, 25$2.57Oct 7, 25$2.50Oct 9, 25$2.56Oct 13, 25$2.44Oct 16, 25$2.31Oct 20, 25$2.27Oct 22, 25$2.21Oct 24, 25$2.48Oct 28, 25$2.38Oct 30, 25$2.42Nov 3, 25$2.39Nov 5, 25$2.37Nov 7, 25$2.36Nov 11, 25$2.59Nov 13, 25$2.51Nov 17, 25$2.99Nov 19, 25$3.14Nov 21, 25$3.06Nov 25, 25$3.27Nov 28, 25$3.34Dec 2, 25$2.99Dec 5, 25$3.33Dec 9, 25$3.45Dec 11, 25$3.62Dec 15, 25$3.79Dec 17, 25$3.57Dec 19, 25$3.44Dec 23, 25$3.29Dec 26, 25$3.23Dec 30, 25$3.12Jan 2, 26$2.88Jan 6, 26$2.56Jan 8, 26$2.50Jan 12, 26$2.52Jan 14, 26$2.55Jan 16, 26$2.52Jan 21, 26$2.74Jan 23, 26$2.70Jan 28, 26$2.55Jan 30, 26$2.28Feb 3, 26$2.67Feb 5, 26$2.44Feb 9, 26$2.26Feb 11, 26$2.35Feb 13, 26$2.29Feb 18, 26$2.17Feb 20, 26$2.13Feb 24, 26$0.42Feb 26, 26$0.40Mar 2, 26$0.43Mar 4, 26$0.58Mar 6, 26$0.50Mar 10, 26$0.51Mar 12, 26$0.46Mar 16, 26$0.46Mar 19, 26$0.45Mar 23, 26$0.37Mar 25, 26$0.38Mar 27, 26$0.35Mar 31, 26$0.33Apr 2, 26$0.37Apr 7, 26$0.33Apr 9, 26$0.37Apr 13, 26$0.40Apr 15, 26$0.45Apr 17, 26$0.45Apr 21, 26$0.38Apr 23, 26$0.37Apr 27, 26$0.35Apr 29, 26$0.35May 1, 26$0.37May 5, 26$0.34May 8, 26$0.33May 12, 26$0.34May 14, 26$0.33May 18, 26$0.19May 20, 26$0.22May 22, 26$0.21May 27, 26$0.22May 29, 26$0.23Jun 2, 26$0.20Jun 4, 26$0.18Jun 8, 26$0.17Jun 10, 26$0.16Jun 12, 26$0.16Jun 16, 26$0.17Jun 18, 26$0.17Jun 23, 26$0.17Jun 29, 26$0.16
$0.1652-week range$3.79
Loading valuation history…

Fundamentals

Key fundamentals

$49.4M

Market cap

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Revenue growth (YoY)

97.9%

Gross margin

-$171.3M

Free cash flow (USD)

$65M

Net debt

1.0%

Share dilution

0/4

Graham criteria passed

Defensive-investor screen

Healthcare

Sector

Trajectory

Long-term trends

Revenue by year

2016 → 2025

FY 2016$0.00FY 2017$0.00FY 2018$0.00FY 2019$0.00FY 2020$0.00FY 2021$0.00FY 2022$0.00FY 2023$0.00FY 2024$114.7MFY 2025$48.5M
$0$48.5M

Free cash flow by year

2016 → 2025

FY 2016$20.0KFY 2017$-5.7MFY 2018$-72.3MFY 2019$-151.4MFY 2020$-201.2MFY 2021$-190.5MFY 2022$-187.5MFY 2023$-159.2MFY 2024$-3.5MFY 2025$-171.3M
$20K-$171.3M

Gross margin by year

2024 → 2025

FY 2024100.0%FY 202597.9%
100.0%97.9%

Value screen

Graham defensive-investor tests

Computing the scorecard — refreshing any stale inputs…

0

Insider buys · 90 days

0

Insider sells · 90 days

Earnings

Last reported: May 18, 2026 (EPS $-0.20)

Next expected: not yet scheduled

On the tape

Recent SEC & insider activity

  • 8-K eventConvertible Notes Conversion RateJul 1, 2026Filing
  • 8-K eventExchange Offer ResultsJun 17, 2026Filing
  • 8-K eventAnnual Meeting ResultsJun 5, 2026Filing
  • 8-K eventDebt IssuanceJun 5, 2026Filing
  • 8-K eventExchange Offer ExtensionJun 2, 2026Filing
  • 8-K eventDebt Exchange AgreementMay 18, 2026Filing
  • Quarterly report10-Q FiledMay 15, 2026Filing
  • 8-K eventDelisting NoticeApr 9, 2026Filing

Questions

Frequently asked questions

What is Gossamer Bio, Inc.'s market cap?

Gossamer Bio, Inc. (GOSS) has a market capitalization of $49.4M.

What is GOSS's P/E ratio?

A meaningful P/E ratio is not available for GOSS — the company's latest fiscal-year earnings per share is zero, negative, or not yet cached.

When did Gossamer Bio, Inc. last report earnings?

GOSS last reported earnings on May 18, 2026; the next date is not yet scheduled.

Are insiders buying GOSS stock?

SEC Form 4 filings show no open-market insider buys at Gossamer Bio, Inc. in the last 90 days (0 sells).

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Timeline

Every filing, insider trade & earnings on a price-anchored timeline

Filing Analyzer

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News

Latest press coverage in one feed

Data: SEC EDGAR filings and cached fundamental data; prices and ratios use the most recent cached quote and statements (may lag by up to a day). Educational and research purposes only. Not investment advice.