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Peak Bio, Inc. (PKBO) Stock Analysis

DELISTED 2023

What happened to Peak Bio, Inc. (PKBO) stock?

Peak Bio, Inc. (PKBO) no longer trades on public markets. It was delisted in January 2023. The figures below are historical and are not a current quote.

Data from FMP · Methodology

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

Peak Bio, Inc. (PKBO) trades at $0.0225. Peak Bio, Inc. is a clinical-stage biopharmaceutical company focused on developing novel therapeutics for oncology and inflammation. Sector: Healthcare.

Last analyzed: Mar 17, 2026
Peak Bio, Inc. is a clinical-stage biopharmaceutical company focused on developing novel therapeutics for oncology and inflammation. Their lead candidate, PHP-303, is undergoing Phase II clinical study for Alpha1 anti-trypsin deficiency (AATD).

Analyst Coverage for PKBO: PKBO does not currently have published analyst price targets in our coverage universe. This is common for smaller-cap names with limited Wall Street coverage. In the absence of analyst consensus, our AI model evaluates PKBO against Healthcare peers across nine fundamental dimensions and assigns a neutral fundamental signal based on the underlying data.

Watch the PKBO film Every key number, told as a short cinematic story — just press play. ~2 min
Council Score · Weighted Average of 3 Disciplines
Strongly Bearish 12/100 · F

PKBO: 2/2 scored disciplines lean bearish.

How is this calculated? →
Munger's Mindset · Balance Sheet & Valuation
Financial Health
Weak
Margin of Safety
Fairly Valued
Council Score · Weighted Average of 3 Disciplines · See tabs for details →

Peak Bio, Inc. (PKBO) Healthcare & Pipeline Overview

CEOHoyoung Huh
Employees6
HeadquartersPalo Alto, US
IPO Year2021

Peak Bio, Inc. is a clinical-stage biopharmaceutical company developing targeted therapies for oncology and inflammation, leveraging its proprietary Thailanstatin technology to create novel Antibody-Drug Conjugates (ADCs). The company's lead candidate, PHP-303, addresses the unmet needs in Alpha1 anti-trypsin deficiency (AATD).

Data Provenance | Financial Data Quantitative Analysis Analysis: Mar 17, 2026

What Is the Investment Thesis for PKBO?

As of Mar 17, 2026 — figures reflect the data available on that date.

Peak Bio, Inc. presents a high-risk, high-reward investment opportunity characteristic of clinical-stage biopharmaceutical companies. The primary value driver is the successful clinical development and potential commercialization of PHP-303 for AATD, a market with significant unmet need. Positive Phase II results could serve as a major catalyst, potentially leading to partnerships or acquisition. The company's ADC platform, based on Thailanstatin, offers additional upside potential, though it is in earlier stages of development. Key risks include clinical trial failures, regulatory hurdles, and the need for additional financing. With a market capitalization of $0.00B and a beta of 1.78, PKBO exhibits the volatility expected of a pre-revenue biotech company. Investors should carefully consider the inherent risks and potential rewards associated with investing in a company at this stage of development.

Based on FMP financials and quantitative analysis

PKBO Key Highlights

Lead product candidate PHP-303 is awaiting Phase II dose clinical study in the orphan disease Alpha1 anti-trypsin deficiency (AATD).

  • Proprietary toxin, PH-1 or Thailanstatin, a spliceosome modulator is being used to generate its first pipeline of novel ADC product candidates.
  • The company focuses on therapeutics addressing unmet needs in the areas of oncology and inflammation.
  • Peak Bio, Inc. is based in Palo Alto, California, a hub for biotechnology innovation.
  • The company has a beta of 1.78, indicating higher volatility compared to the overall market.

Who Are PKBO's Competitors?

PKBO is benchmarked below against 8 industry peers on price, market cap, and our AI MoonshotScore.

Company Price Change Market Cap AI Score
ADAPY Adaptimmune Therapeutics plc $0.03 +0.00% $7.16M 72
RLYB Rallybio Corporation $16.60 -2.35% $88.1M 81
ICCC ImmuCell Corporation $10.09 -0.39% $91.3M 77
JNCE Jounce Therapeutics, Inc. $1.88 +0.00% $99.0M 71
ORMP Oramed Pharmaceuticals Inc. $4.79 +0.00% $196M 77
CGEN Compugen Ltd. $2.65 +8.61% $251M 76
NAGE Niagen Bioscience Inc $3.15 -0.63% $251M 74
ADGI Adagio Therapeutics, Inc. $4.64 +0.87% $506M 71

AI Score by Stock Expert AI · Price data: FMP / Yahoo Finance

What Are PKBO's Key Strengths?

Proprietary Thailanstatin technology platform.

  • Lead product candidate PHP-303 targeting AATD.
  • Focus on unmet medical needs in oncology and inflammation.
  • Experienced leadership team.

What Are PKBO's Weaknesses?

Limited financial resources.

  • Early-stage clinical development.
  • High dependence on successful clinical trial outcomes.
  • Small team size.

What Could Drive PKBO Stock Higher?

Phase II clinical trial results for PHP-303 in AATD (expected in 2027).

  • Expansion of the ADC pipeline with new drug candidates.
  • Potential strategic partnerships with larger pharmaceutical companies.
  • Regulatory milestones for PHP-303, including Orphan Drug designation.

What Are the Key Risks for PKBO?

Negative return on equity (-18.3%) — the business is not currently generating profit on shareholder capital.

  • Clinical trial failures for PHP-303 or other drug candidates.
  • Regulatory delays or rejection of marketing applications.
  • Competition from established pharmaceutical companies with greater resources.
  • Need for additional financing to support clinical development.
  • Intellectual property challenges or patent infringement claims.

What Are the Growth Opportunities for PKBO?

  • Expansion of ADC Pipeline: Peak Bio's Thailanstatin-based ADC platform represents a significant growth opportunity. The global ADC market is projected to reach $29.4 billion by 2028, growing at a CAGR of 22.7% from 2021. By developing multiple ADC candidates targeting different cancer types, Peak Bio can diversify its pipeline and increase its chances of success. This strategy could involve partnering with larger pharmaceutical companies to accelerate development and commercialization.
  • Successful Phase II Trial for PHP-303: The successful completion of the Phase II clinical trial for PHP-303 in AATD would be a major catalyst for Peak Bio. Positive data could lead to accelerated regulatory approval and Orphan Drug designation, providing market exclusivity. The AATD market is estimated to be worth several billion dollars, offering a substantial revenue opportunity for Peak Bio. A successful trial could also attract potential acquirers or strategic partners.
  • Strategic Partnerships and Licensing Agreements: Peak Bio can leverage its proprietary technology and clinical assets to form strategic partnerships with larger pharmaceutical companies. These partnerships could provide funding for clinical development, access to larger patient populations, and expertise in commercialization. Licensing agreements for specific ADC candidates or the Thailanstatin platform could generate significant upfront payments and royalties.
  • Expansion into New Therapeutic Areas: While currently focused on oncology and inflammation, Peak Bio could expand its pipeline into other therapeutic areas with unmet medical needs. This could involve leveraging its ADC platform to target other diseases or developing new small molecule therapies. This diversification strategy could reduce the company's reliance on a single therapeutic area and increase its overall growth potential.
  • Geographic Expansion: Initially focused on the US market, Peak Bio could expand its operations to other regions, such as Europe and Asia. These markets offer significant growth opportunities, particularly for innovative therapies targeting unmet medical needs. Geographic expansion could involve establishing local partnerships, conducting clinical trials in new regions, and seeking regulatory approvals in multiple countries.

What Are PKBO's Competitive Advantages?

  • Proprietary Thailanstatin technology platform for ADC development.
  • Patent protection for its drug candidates and therapeutic methods.
  • Expertise in targeted therapies and precision medicine.
  • Focus on unmet medical needs in oncology and inflammation.

What Does PKBO Do?

Peak Bio, Inc., headquartered in Palo Alto, California, is a clinical-stage biopharmaceutical company dedicated to creating innovative therapeutics for oncology and inflammation. The company was founded with the goal of addressing significant unmet medical needs through targeted therapies. Peak Bio's core technology revolves around Thailanstatin (PH-1), a spliceosome modulator, which is being utilized to develop a pipeline of novel ADC (Antibody-Drug Conjugate) product candidates designed to improve outcomes for cancer patients. Their lead product candidate, PHP-303, is a small molecule currently awaiting Phase II dose clinical study for the treatment of the orphan disease Alpha1 anti-trypsin deficiency (AATD). This rare genetic disorder leads to a deficiency in the AAT protein, resulting in lung and liver damage. Peak Bio is focused on advancing PHP-303 through clinical trials to potentially offer a new treatment option for AATD patients. The company's strategic focus on ADCs and targeted therapies reflects a commitment to precision medicine and personalized healthcare solutions. Peak Bio operates with a lean structure, currently employing six individuals, allowing for efficient resource allocation and agile decision-making in the dynamic biotechnology landscape.

What Products and Services Does PKBO Offer?

  • Develops novel Antibody-Drug Conjugates (ADCs) for cancer treatment.
  • Focuses on addressing unmet needs in oncology and inflammation.
  • Utilizes Thailanstatin (PH-1) as a spliceosome modulator for targeted therapies.
  • Conducts clinical trials to evaluate the safety and efficacy of its drug candidates.
  • Aims to improve outcomes for patients with cancer and inflammatory diseases.
  • Develops small molecule therapies for rare diseases.
  • Seeks strategic partnerships to accelerate drug development and commercialization.

How Does PKBO Make Money?

  • Develops and patents novel therapeutic compounds.
  • Conducts preclinical and clinical research to evaluate drug candidates.
  • Out-licenses or partners with larger pharmaceutical companies for commercialization.
  • Generates revenue through licensing fees, milestone payments, and royalties.

What Industry Does PKBO Operate In?

The biotechnology industry is characterized by high R&D spending, long development timelines, and significant regulatory oversight. Companies like Peak Bio operate in a competitive landscape, facing established pharmaceutical giants and other emerging biotech firms. The market for targeted therapies and ADCs is growing rapidly, driven by advances in genomics and personalized medicine. The AATD market represents a niche opportunity with limited treatment options, while the oncology market is vast but highly competitive. Success in this industry requires strong scientific expertise, efficient clinical trial execution, and strategic partnerships.

Who Are PKBO's Key Customers?

  • Patients suffering from cancer and inflammatory diseases.
  • Healthcare providers who prescribe and administer Peak Bio's therapies.
  • Pharmaceutical companies that partner with Peak Bio for drug development and commercialization.
AI Confidence: 71% Updated: Mar 17, 2026

Company Profile

Peak Bio, Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Palo Alto, US. The company is led by CEO Hoyoung Huh. PKBO has traded publicly since 2021.

ROE -18%

Key Financial Metrics

Return on equity for Peak Bio, Inc. stands at -18.3%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is -18.2%, showing how much profit it generates from its asset base. Its free cash flow yield is -0.1%, a gauge of the cash the business throws off relative to its market value. A current ratio of 21.48 indicates the company holds enough short-term assets to cover its near-term obligations. Its earnings yield is -52.3%, the inverse of the P/E and a quick read on earnings relative to price.

F-Score 4/9

Financial Health

Peak Bio, Inc.'s Piotroski F-Score is 4/9, a 9-point checklist of profitability, leverage and efficiency — a middling fundamental profile.

Net buying

Insider Activity

The most recent 12 insider filings for Peak Bio, Inc. break down as 9 sales and 3 purchases. On net that is roughly 736K shares acquired (about $740K) — insiders putting money in tends to read as conviction.

PKBO Financials

Fundamental Snapshot

Revenue Growth (FY)
-100.0%
Net Income Growth (FY)
-33.1%
Return on Equity (TTM)
-18.3%
Current Ratio
21.5

Based on FMP financials and quantitative analysis · FY 2024

Bull Case vs Bear Case

Bull Case

  • Proprietary Thailanstatin technology platform.
  • Lead product candidate PHP-303 targeting AATD.
  • Focus on unmet medical needs in oncology and inflammation.
  • Experienced leadership team.

Bear Case

  • Limited financial resources.
  • Early-stage clinical development.
  • High dependence on successful clinical trial outcomes.
  • Small team size.

AI-generated arguments based on insider flow, news sentiment and technicals — not financial advice · August 2026

PKBO Latest News

No recent news available for PKBO.

Leadership: Hoyoung Huh

CEO

Hoyoung Huh serves as the CEO of Peak Bio, Inc., bringing extensive experience in the biotechnology and pharmaceutical industries. His background includes leadership roles in various companies, focusing on drug development, clinical trials, and commercialization strategies. He has a proven track record of driving innovation and building successful teams. Huh's expertise spans across multiple therapeutic areas, including oncology and inflammation, aligning with Peak Bio's core focus. His strategic vision and operational expertise are crucial for guiding Peak Bio through its clinical development programs and achieving its long-term goals.

Track Record: Under Hoyoung Huh's leadership, Peak Bio has advanced PHP-303 into Phase II clinical development for AATD. He has also overseen the expansion of the company's ADC pipeline, leveraging the Thailanstatin platform. His focus on strategic partnerships and efficient resource allocation has been instrumental in advancing Peak Bio's programs despite its limited size. Huh's leadership is critical for navigating the challenges and opportunities in the competitive biotechnology landscape.

Common Questions About PKBO (Healthcare)

What happened to Peak Bio, Inc. (PKBO) stock?

Peak Bio, Inc. (PKBO) no longer trades on public markets. It was delisted in January 2023. The figures below are historical and are not a current quote.

Can I still buy PKBO shares?

No. PKBO stopped trading on public markets in January 2023, so the shares are not available through a broker. Anything you see quoted for PKBO elsewhere is historical data, not a live market.

Are the figures on this page current?

No. Every number here is the last value recorded before PKBO stopped trading. Nothing on this page updates, and none of it is a current quote.

Why does this page still exist?

Because people still search for what happened to Peak Bio, Inc.. An archived profile that states the delisting plainly is more useful than a dead link — provided it is labelled as history, which is what this page does.

What does Peak Bio, Inc. do?

Peak Bio, Inc. is a clinical-stage biopharmaceutical company focused on developing innovative therapies for oncology and inflammation. The company's core technology revolves around Thailanstatin (PH-1), a spliceosome modulator, which is being utilized to develop a pipeline of novel ADC (Antibody-Drug Conjugate) product candidates designed to improve outcomes for cancer patients.

What do analysts say about PKBO stock?

As of March 17, 2026, there is no available analyst coverage for Peak Bio, Inc. (PKBO). Given its market capitalization of $0.00B and status as a clinical-stage biopharmaceutical company, PKBO is considered a high-risk, high-reward investment. The company's success hinges on the clinical development and potential commercialization of its drug candidates, particularly PHP-303 for AATD.

What are the main risks for PKBO?

The primary risks for Peak Bio, Inc. include clinical trial failures, regulatory hurdles, and the need for additional financing. As a clinical-stage biopharmaceutical company, PKBO's success depends on the positive outcomes of its clinical trials. Negative results could significantly impact the company's value. Regulatory delays or rejection of marketing applications could also hinder the commercialization of its drug candidates.

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

Analysis updated
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 Provenance
Sources: Financial Modeling Prep (FMP) — Primary · Yahoo Finance — Fallback · Alpaca — Tertiary
Last fetched:
Cache TTL: Quote 5min · Profile 7d · Financials 7d · Insider 48h
How we use AI: Numbers are pulled directly from FMP & Yahoo Finance — our AI writes the analysis, it never edits the figures.
Data provided as-is for educational purposes. Not financial advice. Methodology

Data provided for informational purposes only.

Analysis Notes
  • Information is based on limited available data.
  • AI analysis is pending and may provide further insights.
Data Sources

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