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Gritstone bio, Inc. (GRTS)

For informational purposes only. Not financial advice. Analysis by Sedat Aydin, Founder & Editor-in-Chief | AI-powered analysis. Data sourced from SEC filings and institutional-grade financial providers. Editorially reviewed. Not financial advice.

Gritstone bio, Inc. (GRTS) trades at $0.03 with AI Score 44/100 (Weak). Gritstone bio, Inc. is a clinical-stage biotechnology company focused on developing innovative immunotherapies for cancer and infectious diseases. Market cap: 4M, Sector: Healthcare.

Last analyzed: Feb 8, 2026
Gritstone bio, Inc. is a clinical-stage biotechnology company focused on developing innovative immunotherapies for cancer and infectious diseases. Their pipeline includes neoantigen-based and off-the-shelf immunotherapies, as well as vaccines against SARS-CoV-2 and HIV.
44/100 AI Score MCap 4M Vol 56M

Gritstone bio, Inc. (GRTS) Healthcare & Pipeline Overview

CEOAndrew R. Allen BCh, BM, MA, MRCP,
Employees231
HeadquartersEmeryVille, CA, US
IPO Year2018

Gritstone bio is pioneering the next generation of cancer and infectious disease immunotherapies, leveraging its innovative vaccine platform to target neoantigens and deliver personalized treatments, positioning it for significant growth in the rapidly evolving biotechnology landscape and strategic collaborations.

Data Provenance | Financial Data Quantitative Analysis NASDAQ Analysis: Feb 8, 2026

Investment Thesis

Investing in Gritstone bio presents a notable opportunity due to its innovative immunotherapy platforms and diversified pipeline targeting significant unmet medical needs in oncology and infectious diseases. The GRANITE and SLATE programs hold promise in the treatment of solid tumors, while the CORAL vaccine platform offers potential in addressing current and future SARS-CoV-2 variants. The company's strategic collaborations with bluebird bio, Gilead Sciences, and Genevant Sciences further validate its technology and provide financial resources for development. While the company's Profit Margin is currently -10405.0% and Gross Margin is -470.3%, these figures are typical for clinical-stage biotech companies that are heavily investing in R&D. Key catalysts include upcoming clinical trial results for GRANITE and SLATE, as well as potential partnerships for the CORAL vaccine platform. Success in these areas could drive significant value appreciation for GRTS.

Based on FMP financials and quantitative analysis

Key Highlights

  • Gritstone bio is a clinical-stage biotechnology company focused on developing immunotherapies for cancer and infectious diseases.
  • Lead product candidate GRANITE is a neoantigen-based immunotherapy targeting solid tumors, including lung, gastroesophageal, bladder, and colorectal cancers.
  • Developing SLATE, an off-the-shelf immunotherapy candidate for common solid tumors, offering broader patient applicability.
  • CORAL, a SARS-CoV-2 vaccine platform, aims to provide protection against current and future variants.
  • Strategic collaborations with bluebird bio, Gilead Sciences, and Genevant Sciences validate technology and provide financial support.

Competitors & Peers

Strengths

  • Innovative neoantigen-based immunotherapy platform.
  • Diversified pipeline targeting cancer and infectious diseases.
  • Strategic collaborations with established pharmaceutical companies.
  • Experienced management team with expertise in immunotherapy development.

Weaknesses

  • Clinical-stage company with no currently approved products.
  • High R&D expenses and negative profit margins.
  • Dependence on clinical trial success and regulatory approvals.
  • Limited commercialization capabilities.

Catalysts

  • Clinical trial results for GRANITE in metastatic non-small cell lung cancer.
  • Clinical trial results for SLATE in colorectal cancer.
  • Potential partnerships for CORAL vaccine platform.
  • Advancement of HIV therapeutic vaccine candidate into clinical trials.

Risks

  • Clinical trial failures or delays.
  • Regulatory setbacks or rejection of product candidates.
  • Competition from other biotechnology and pharmaceutical companies.
  • Dependence on securing additional funding to support R&D activities.
  • Intellectual property disputes or challenges.

Growth Opportunities

  • Expansion of GRANITE clinical trials: Gritstone has the opportunity to expand the clinical trials for GRANITE to include additional solid tumor types and combination therapies. The market for solid tumor treatments is substantial, with a global market size estimated at billions of dollars annually. Positive clinical data from these expanded trials could lead to accelerated regulatory approval and commercialization, driving significant revenue growth for Gritstone.
  • Advancement of SLATE program: The SLATE program, an off-the-shelf immunotherapy candidate, offers the potential to treat a broader range of patients with common solid tumors. Successful clinical development and commercialization of SLATE could tap into a large market, providing a significant growth opportunity for Gritstone. The timeline for this growth opportunity is dependent on clinical trial progress, with potential for commercialization within the next 3-5 years.
  • Partnerships for CORAL vaccine platform: Gritstone's CORAL vaccine platform, designed to address SARS-CoV-2 variants, presents a valuable opportunity for partnerships with larger pharmaceutical companies. The global market for COVID-19 vaccines remains significant, and Gritstone's platform could offer a differentiated approach to addressing emerging variants. Securing a partnership could provide substantial upfront payments, milestone payments, and royalties, driving revenue growth.
  • Development of HIV therapeutic vaccine: Gritstone is developing a therapeutic vaccine candidate targeting HIV infection, a disease with a significant unmet medical need. Successful development and commercialization of this vaccine could address a large patient population and generate substantial revenue. The timeline for this growth opportunity is longer-term, dependent on clinical trial progress and regulatory approval.
  • Expansion of neoantigen discovery platform: Gritstone's neoantigen discovery platform is a key competitive advantage, enabling the identification of novel targets for immunotherapy. Expanding the capabilities of this platform and applying it to new disease areas could lead to the development of additional product candidates and partnerships, driving long-term growth for the company.

Opportunities

  • Expansion of clinical trials to new indications.
  • Partnerships for commercialization of product candidates.
  • Advancements in personalized medicine and immunotherapy.
  • Growing market for cancer and infectious disease therapies.

Threats

  • Clinical trial failures and regulatory setbacks.
  • Competition from established pharmaceutical companies.
  • Changes in the regulatory landscape.
  • Economic downturn and reduced healthcare spending.

Competitive Advantages

  • Proprietary neoantigen discovery platform.
  • Personalized immunotherapy approach.
  • Off-the-shelf immunotherapy candidates.
  • Strategic collaborations with leading pharmaceutical companies.

About GRTS

Gritstone bio, Inc., founded in 2015 and headquartered in Emeryville, California, is a clinical-stage biotechnology company dedicated to developing cutting-edge immunotherapies. The company's mission is to combat cancer and infectious diseases through innovative vaccine platforms that stimulate the body's immune system. Gritstone's lead product candidate, GRANITE, is a neoantigen-based immunotherapy designed to treat solid tumors, including metastatic non-small cell lung cancer, gastroesophageal, bladder, and microsatellite stable colorectal cancers. This personalized approach targets the unique mutations present in each patient's tumor, aiming for a more effective and durable response. In addition to GRANITE, Gritstone is developing SLATE, an off-the-shelf immunotherapy candidate targeting common solid tumors like metastatic non-small cell lung cancer, colorectal cancer, pancreatic cancer, and shared neoantigen-positive tumors. This off-the-shelf approach offers a broader application, potentially benefiting a larger patient population. Furthermore, Gritstone is leveraging its platform to address infectious diseases, with CORAL, a SARS-CoV-2 vaccine platform, designed to deliver spike and additional SARS-CoV-2 T cell epitopes for enhanced protection against variants. The company is also developing a therapeutic vaccine candidate targeting HIV infection, aiming to treat and potentially cure the disease. Gritstone has established strategic collaborations with companies like bluebird bio, Inc., Gilead Sciences, Inc., and Genevant Sciences GmbH, further validating its technology and expanding its development capabilities. Formerly known as Gritstone Oncology, Inc., the company rebranded to Gritstone bio, Inc. in May 2021 to reflect its broader focus on both cancer and infectious diseases.

What They Do

  • Develop neoantigen-based immunotherapies for solid tumors.
  • Create off-the-shelf immunotherapies for common cancers.
  • Design vaccines against SARS-CoV-2 variants.
  • Develop therapeutic vaccines for HIV infection.
  • Utilize a proprietary neoantigen discovery platform.
  • Partner with pharmaceutical companies for development and commercialization.

Business Model

  • Develop and out-license immunotherapies and vaccines.
  • Generate revenue through strategic collaborations and partnerships.
  • Receive upfront payments, milestone payments, and royalties from partners.
  • Potentially commercialize products independently upon regulatory approval.

Industry Context

The biotechnology industry is characterized by rapid innovation and intense competition, with companies vying to develop novel therapies for unmet medical needs. The immunotherapy market, in particular, is experiencing significant growth, driven by advancements in personalized medicine and the increasing prevalence of cancer and infectious diseases. Gritstone bio is positioned within this landscape as a developer of neoantigen-based immunotherapies, a promising approach that leverages the unique mutations present in individual tumors. Competitors like Affimed (AFMD), Aptose Biosciences (APTO), BioCellebrate (BCEL), Gamida Cell (GMDA), and Idera Pharmaceuticals (IDRA) are also pursuing innovative approaches in oncology and immunology, but Gritstone's focus on neoantigen-based therapies and its diversified pipeline differentiate it within the competitive landscape.

Key Customers

  • Patients with solid tumors (e.g., lung, colorectal, pancreatic cancer).
  • Individuals at risk of SARS-CoV-2 infection.
  • People living with HIV.
  • Pharmaceutical companies seeking innovative immunotherapy technologies.
AI Confidence: 70% Updated: Feb 8, 2026

GRTS Financials

GRTS Price Today & Live Chart

Gritstone bio, Inc. (GRTS) stock price: $0.03 (-0.01, -31.78%)

GRTS Latest News

GRTS Analyst Consensus

Consensus Rating

Aggregated Buy/Hold/Sell recommendations from Benzinga, Yahoo Finance, and Finnhub for GRTS.

Price Targets

Wall Street price target analysis for GRTS.

GRTS MoonshotScore

44/100

What does this score mean?

The MoonshotScore rates GRTS's growth potential on a scale of 0-100 across multiple factors including innovation, market disruption, financial health, and momentum.

Common Questions About GRTS (Healthcare)

What does Gritstone bio, Inc. do?

Gritstone bio, Inc. is a clinical-stage biotechnology company focused on developing innovative immunotherapies for cancer and infectious diseases. The company leverages its proprietary neoantigen discovery platform to identify unique targets for personalized cancer treatments. Its lead product candidate, GRANITE, is a neoantigen-based immunotherapy designed to treat solid tumors. Gritstone is also developing SLATE, an off-the-shelf immunotherapy, and CORAL, a SARS-CoV-2 vaccine platform, demonstrating its commitment to addressing significant unmet medical needs through cutting-edge science and strategic partnerships.

Is GRTS stock worth researching?

GRTS stock represents a high-risk, high-reward investment opportunity. As a clinical-stage biotech company, Gritstone's value is heavily dependent on the success of its clinical trials and regulatory approvals. While the company's innovative immunotherapy platforms and diversified pipeline offer significant potential, investors should be aware of the inherent risks associated with drug development. The company's negative Profit Margin of -10405.0% reflects its current stage of development. Positive clinical trial data and strategic partnerships could drive significant value appreciation, but negative results could have a detrimental impact on the stock price. A balanced approach considering both the potential upside and the inherent risks is crucial.

What are the main risks for GRTS?

The primary risks for Gritstone bio include clinical trial failures, regulatory setbacks, and competition from other biotechnology and pharmaceutical companies. As a clinical-stage company, Gritstone is heavily reliant on the success of its clinical trials, and any negative results could significantly impact its stock price. Regulatory approval is also a major hurdle, and delays or rejections could derail the company's development plans. Furthermore, the biotechnology industry is highly competitive, and Gritstone faces competition from larger, more established companies with greater resources. The company's ongoing need for funding to support R&D activities also poses a risk, as it may need to raise additional capital through dilutive financing.

What are the key factors to evaluate for GRTS?

Gritstone bio, Inc. (GRTS) currently holds an AI score of 44/100, indicating low score. Key strength: Innovative neoantigen-based immunotherapy platform. Primary risk to monitor: Clinical trial failures or delays. This is not financial advice.

How frequently does GRTS data refresh on this page?

GRTS prices update in real time during U.S. market hours (9:30 AM-4:00 PM ET, weekdays). Fundamentals refresh after quarterly or annual filings. Analyst ratings and AI insights update daily. News is aggregated continuously from financial sources.

What has driven GRTS's recent stock price performance?

Recent price movement in Gritstone bio, Inc. (GRTS) can be influenced by earnings results, analyst revisions, sector rotation, and broader market sentiment. Notable catalyst: Innovative neoantigen-based immunotherapy platform. Check the News and Technical Analysis tabs for the latest drivers. Past performance does not predict future results.

Should investors consider GRTS overvalued or undervalued right now?

Determining whether Gritstone bio, Inc. (GRTS) is overvalued or undervalued requires examining multiple metrics. Compare valuation ratios (P/E, P/S, EV/EBITDA) against sector peers for a comprehensive view.

What research should beginners do before buying GRTS?

Before investing in Gritstone bio, Inc. (GRTS), research these four areas: (1) the company's revenue model and competitive position (see Company Overview), (2) financial health through revenue growth, margins, and cash flow (see MoonshotScore), (3) what Wall Street analysts recommend and their price targets (see Analyst tab), and (4) specific risk factors that could impact the stock (see Risk Factors section).

Disclaimer: This content is for informational purposes only and does not constitute investment advice. Always do your own research and consult a financial advisor.

Official Resources

Price as of Analysis updated AI Score refreshed daily
Data Sources & Methodology
Market data powered by Financial Modeling Prep & Yahoo Finance. AI analysis by Stock Expert AI proprietary algorithms. Technical indicators via industry-standard calculations. Last updated: .

Data provided for informational purposes only.

Analysis Notes
  • Stock data pending update.
  • Financial metrics based on available data and may not reflect the most recent information.
Data Sources

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