Skip to main content
Skip to main content
AEZS logo

Aeterna Zentaris Inc. (AEZS) Stock Analysis

DELISTED 2024

What happened to Aeterna Zentaris Inc. (AEZS) stock?

Aeterna Zentaris Inc. (AEZS) no longer trades on public markets. It was delisted in August 2024. The figures below are historical and are not a current quote.

MCap: $17.5M| Vol: 7.5K| 52-wk range: $0.15 – $9.32
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.

Aeterna Zentaris Inc. (AEZS) trades at $5.72. Aeterna Zentaris Inc. is a specialty biopharmaceutical company focused on developing and commercializing therapeutics and diagnostic tests. Market cap: $17.5M, Sector: Healthcare.

Last analyzed: Jun 15, 2026
Aeterna Zentaris Inc. is a specialty biopharmaceutical company focused on developing and commercializing therapeutics and diagnostic tests. Its primary product, Macrilen (macimorelin), addresses adult and childhood-onset growth hormone deficiency, alongside a pipeline of licensed assets targeting infectious diseases, neurological disorders, and rare endocrine conditions.

Analyst Coverage for AEZS: AEZS 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 AEZS against Healthcare peers across nine fundamental dimensions and assigns a neutral fundamental signal based on the underlying data.

Watch the AEZS film Every key number, told as a short cinematic story — just press play. ~2 min
Council Score · Weighted Average of 3 Disciplines
Bearish Lean 23/100 · F

AEZS: 2/2 scored disciplines lean bearish. Dominant signal: Seth Klarman bearish.

How is this calculated? →
Legends Council · 5 Legends + Moon AI
Izzy Englander
Neutral
Seth Klarman
Bearish
Moon AI
Bearish
Munger's Mindset · Balance Sheet & Valuation
Financial Health
Negative
Margin of Safety
Fairly Valued
Council Score · Weighted Average of 3 Disciplines · See tabs for details →

Aeterna Zentaris Inc. (AEZS) Healthcare & Pipeline Overview

CEOGilles R. Gagnon
Employees12
HeadquartersSummerville, US
IPO Year2000

Aeterna Zentaris Inc. is a specialty biopharmaceutical company focused on developing and commercializing therapeutics and diagnostic tests. Its primary product, Macrilen (macimorelin), addresses adult and childhood-onset growth hormone deficiency, alongside a pipeline of licensed assets targeting infectious diseases, neurological disorders, and rare endocrine conditions, positioning it in specialized biotech markets.

Data Provenance | Financial Data Quantitative Analysis Analysis: Jun 15, 2026

What Is the Investment Thesis for AEZS?

As of Jun 15, 2026 — figures reflect the data available on that date.

Aeterna Zentaris Inc. presents an investment thesis centered on the commercialization of its lead product, Macrilen (macimorelin), and the potential upside from its diversified, early-stage pipeline assets. Macrilen, an orally available diagnostic for growth hormone deficiency, addresses a specific endocrine market, providing a revenue stream. The company's strategic licensing agreements, such as those for a potential COVID-19 vaccine, neuromyelitis optica spectrum disorder treatment, Parkinson's disease, and primary hypoparathyroidism, represent multiple, albeit early-stage, growth catalysts. These collaborations leverage external research capabilities and expand the company's therapeutic reach beyond its core endocrine focus. However, the company operates with a significant negative profit margin of -92.1% and a market capitalization of $17.5M, indicative of a small-cap biotechnology firm heavily reliant on successful clinical development and regulatory approvals. The high Beta of 2.26 suggests considerable stock price volatility. Future value drivers depend critically on the successful progression of its pipeline candidates through clinical trials, securing additional regulatory approvals, and effective commercialization efforts for Macrilen in licensed territories. Investors should closely monitor trial results, regulatory milestones, and the company's financial runway, as these factors will dictate the realization of potential value from its current assets and future developments.

Based on FMP financials and quantitative analysis

AEZS Key Highlights

Market Capitalization: $0.02 billion, reflecting its status as a small-cap biopharmaceutical company.

  • Profit Margin: -92.1%, indicating significant operational losses as the company invests in R&D and commercialization.
  • Gross Margin: 38.0%, suggesting a positive margin on its product sales, primarily Macrilen, before operating expenses.
  • Beta: 2.26, signifying higher volatility compared to the broader market, typical for biotechnology stocks.
  • Employee Count: 12 employees, highlighting a lean operational structure for a company with multiple pipeline projects.

Who Are AEZS's Competitors?

AEZS 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 AEZS's Key Strengths?

Commercialized lead product, Macrilen, for growth hormone deficiency diagnosis.

  • Diversified pipeline through multiple strategic licensing agreements across various therapeutic areas.
  • Focus on specialized and orphan diseases with unmet medical needs.
  • Lean operational structure with 12 employees.

What Are AEZS's Weaknesses?

Significant negative profit margin (-92.1%), indicating unprofitability.

  • High reliance on successful clinical trials and regulatory approvals for pipeline assets.
  • Small market capitalization ($0.02B) and high Beta (2.26) suggest financial vulnerability and volatility.
  • Limited internal R&D capacity, relying heavily on external collaborations for pipeline development.

What Could Drive AEZS Stock Higher?

AEZS catalyst: Commercialization efforts for Macrilen (macimorelin) in the United States and Canada through partnerships with Consilient Health Ltd., Novo Nordisk Health Care AG, and NK MEDITECH Ltd.

  • Progression of preclinical development towards a potential treatment for Parkinson's disease under the license agreement with University Wuerzburg.
  • Advancement of research and development activities for a potential COVID-19 vaccine in collaboration with University Wuerzburg.
  • Further development and manufacturing milestones for the treatment of neuromyelitis optica spectrum disorder.
  • Research and development progress on parathyroid hormone fusion polypeptides for primary hypoparathyroidism with The University of Sheffield.

What Are the Key Risks for AEZS?

Financial-distress signal — its Altman Z-Score of 0.26 sits in the distress zone (elevated bankruptcy risk).

  • Negative return on equity (-92.6%) — the business is not currently generating profit on shareholder capital.
  • Weak fundamentals — a Piotroski F-Score of 1/9 flags soft profitability, leverage or efficiency.
  • Significant negative profit margin of -92.1%, indicating current unprofitability and reliance on capital for operations.
  • High dependence on the successful outcome of clinical trials and regulatory approvals for its pipeline products, including the COVID-19 vaccine and treatments for rare diseases.
  • Exposure to high stock price volatility, as indicated by a Beta of 2.26, which is typical for small-cap biotechnology firms.
  • Competition from larger, more established pharmaceutical companies with greater financial and R&D resources in the therapeutic areas Aeterna Zentaris is pursuing.
  • Dependence on the performance and commitment of licensing partners for the development and commercialization of key assets like Macrilen in certain territories and other pipeline projects.

What Are the Growth Opportunities for AEZS?

  • Expansion of Macrilen Commercialization and Indications: Macrilen (macimorelin) is Aeterna Zentaris's commercialized diagnostic for adult and childhood-onset growth hormone deficiency. Further growth can be driven by expanding its market penetration in existing licensed territories, such as the United States and Canada, through partnerships with Consilient Health Ltd., Novo Nordisk Health Care AG, and NK MEDITECH Ltd. Additionally, exploring and securing regulatory approvals for new oncology indications, as mentioned in the business description, could significantly broaden its addressable patient population. The global growth hormone deficiency market is substantial, with diagnostic segments continuously seeking more convenient and reliable testing methods, positioning Macrilen for potential revenue growth in the coming years.
  • Development of a Potential COVID-19 Vaccine: Through a license agreement with University Wuerzburg, Aeterna Zentaris is engaged in the research, development, manufacture, and potential sale of a COVID-19 vaccine. While the global vaccine market is highly competitive, the ongoing need for updated vaccines against emerging variants and for booster programs presents a significant opportunity. A successful vaccine candidate could tap into a multi-billion dollar market, offering substantial revenue potential, particularly if it demonstrates superior efficacy, safety, or ease of administration. The timeline for vaccine development is typically expedited in pandemic scenarios, but regulatory hurdles remain rigorous.
  • Treatment for Neuromyelitis Optica Spectrum Disorder (NMOSD): Aeterna Zentaris holds a license agreement with University Wuerzburg for the development, manufacture, and commercialization of a treatment for neuromyelitis optica spectrum disorder. NMOSD is a rare, debilitating autoimmune disease of the central nervous system with significant unmet medical needs. The market for rare disease treatments, often referred to as orphan drugs, typically commands premium pricing due to the limited patient population and high development costs. Successfully bringing an NMOSD treatment to market could provide a valuable revenue stream and address a critical patient need, with a development timeline that could span several years through clinical trials.
  • Pre-clinical Development for Parkinson's Disease: The company is involved in pre-clinical development towards a potential treatment for Parkinson's disease, also through its collaboration with University Wuerzburg. Parkinson's disease represents a vast and growing neurological disorder market, driven by an aging global population. While early-stage, a breakthrough therapy in this area could have immense market potential, given the limitations of current treatments that primarily manage symptoms rather than halt disease progression. The pre-clinical phase is the initial step in a long development pathway, suggesting a long-term growth opportunity with significant potential if successful.
  • Parathyroid Hormone Fusion Polypeptides for Primary Hypoparathyroidism: A license agreement with The University of Sheffield, UK, focuses on the research, development, manufacture, and commercialization of parathyroid hormone fusion polypeptides for the treatment of primary hypoparathyroidism. This is another rare endocrine disorder characterized by insufficient parathyroid hormone production. Similar to NMOSD, therapies for rare diseases can command high prices. Developing an effective treatment for primary hypoparathyroidism could address a specific patient population with limited therapeutic options, contributing to Aeterna Zentaris's specialized portfolio. The development timeline would involve extensive clinical trials following initial research phases.

What Threats Does AEZS Face?

  • Failure of pipeline candidates in clinical trials or inability to secure regulatory approvals.
  • Intense competition from larger pharmaceutical and biotechnology companies.
  • Dependence on licensing partners for development and commercialization success.
  • Financial constraints and the need for future capital raises, potentially leading to dilution.

What Are AEZS's Competitive Advantages?

  • Specialized Product Focus: Macrilen's unique oral administration for growth hormone deficiency diagnosis offers a differentiated approach compared to traditional methods.
  • Strategic Licensing Portfolio: A diverse set of licensing agreements provides access to multiple potential therapeutic areas and technologies, spreading R&D risk and expanding future revenue potential.
  • Early-Stage Pipeline Diversity: Engagements in areas like COVID-19 vaccines, rare neurological disorders, and endocrine conditions create multiple shots on goal for future product development.
  • Regulatory Approvals: Macrilen has already achieved regulatory approval for its diagnostic indication, providing a foundational commercial asset.

What Does AEZS Do?

Aeterna Zentaris Inc., established in 1990 and headquartered in Summerville, South Carolina, operates as a specialty biopharmaceutical company dedicated to the development and commercialization of innovative therapeutics and diagnostic tests. The company's foundational product and commercial focus is macimorelin, marketed under the brand name Macrilen. This orally available peptidomimetic ghrelin receptor (GHSR-1a) agonist is designed to stimulate the secretion of growth hormone by binding to GHSR-1a. Macrilen is utilized for the diagnosis of adult growth hormone deficiency and childhood-onset growth hormone deficiency, with ongoing exploration into potential oncology indications. Beyond Macrilen, Aeterna Zentaris has strategically expanded its pipeline through a series of licensing agreements, diversifying its therapeutic areas of interest. These agreements include a collaboration with University Wuerzburg for the research, development, manufacturing, and potential sale of a COVID-19 vaccine, demonstrating a response to global health priorities. Further partnerships with University Wuerzburg extend to the development, manufacture, and commercialization of treatments for neuromyelitis optica spectrum disorder, a rare autoimmune condition, and the creation of human 3D intestinal tissue models for studying infection biology. Additionally, the company is engaged in preclinical development towards a potential treatment for Parkinson's disease through this same university collaboration. Aeterna Zentaris has also secured licensing agreements with Consilient Health Ltd., Novo Nordisk Health Care AG, and NK MEDITECH Ltd. for the continued development and commercialization of macimorelin in key markets such as the United States and Canada. Another significant partnership is with The University of Sheffield in the United Kingdom, focusing on the research, development, manufacture, and commercialization of parathyroid hormone fusion polypeptides aimed at treating primary hypoparathyroidism, a rare endocrine disorder. This multifaceted approach, combining a commercialized diagnostic product with a broad, early-stage pipeline, defines Aeterna Zentaris's strategy in the competitive biotechnology landscape.

What Products and Services Does AEZS Offer?

  • Develops and commercializes therapeutics and diagnostic tests for various medical conditions.
  • Markets Macrilen (macimorelin), an orally available diagnostic for adult and childhood-onset growth hormone deficiency.
  • Engages in research and development for a potential COVID-19 vaccine through a licensing agreement.
  • Develops treatments for rare autoimmune conditions like neuromyelitis optica spectrum disorder.
  • Conducts preclinical research for potential therapies targeting Parkinson's disease.
  • Develops human 3D intestinal tissue models for studying infection biology.
  • Researches and develops parathyroid hormone fusion polypeptides for primary hypoparathyroidism.
  • Manages licensing agreements with various partners for product development and commercialization.

How Does AEZS Make Money?

  • Product Sales: Generates revenue from the commercialization of its lead product, Macrilen, as a diagnostic test.
  • Licensing Agreements: Enters into strategic partnerships to license its intellectual property or to gain rights to develop and commercialize external innovations.
  • Research & Development Milestones/Royalties: Potentially earns milestone payments and future royalties from its licensing partners upon achievement of development goals or commercial sales.
  • Therapeutic Development: Aims to develop and commercialize new therapeutic products from its pipeline, generating future revenue streams upon market approval.

What Industry Does AEZS Operate In?

Aeterna Zentaris Inc. operates within the highly specialized and competitive Biotechnology industry, a sub-sector of Healthcare. This industry is characterized by intensive research and development, lengthy regulatory approval processes, and a high degree of innovation aimed at addressing unmet medical needs. Aeterna Zentaris positions itself as a specialty biopharmaceutical company, primarily focusing on endocrine disorders with its lead product, Macrilen, for growth hormone deficiency diagnosis. The broader biotechnology market is driven by advancements in genomics, personalized medicine, and an aging global population, creating demand for novel therapeutics and diagnostics. However, small-cap biotech firms like Aeterna Zentaris face intense competition from larger pharmaceutical companies with greater resources and established market presence. Success hinges on differentiating products, securing intellectual property, and navigating complex clinical and regulatory pathways efficiently. The company's strategy of leveraging licensing agreements to expand its pipeline into areas like infectious diseases and neurological disorders reflects an attempt to diversify and capture opportunities within this dynamic landscape.

Who Are AEZS's Key Customers?

  • Endocrinologists and Pediatric Endocrinologists: Primary prescribers and users of Macrilen for diagnosing growth hormone deficiency.
  • Hospitals and Diagnostic Centers: Facilities where Macrilen diagnostic tests are administered.
  • Patients: Individuals suffering from growth hormone deficiency, neuromyelitis optica spectrum disorder, Parkinson's disease, and primary hypoparathyroidism.
  • Research Institutions: Potential collaborators or beneficiaries of 3D intestinal tissue models for infection biology studies.
AI Confidence: 68% Updated: Jun 15, 2026

Aeterna Zentaris Inc. (AEZS) Valuation Context

Valued at $17.5M, AEZS is classified as a micro-cap stock.

AEZS Revenue & Earnings Trend

In Q2 2024, AEZS generated $2.3M in top-line revenue, marking a sequential increase of 58589.1%. The company recorded a net loss of $1.4M, with diluted EPS of $-0.64.

Company Profile

Aeterna Zentaris Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Summerville, US. The company is led by CEO Gilles R. Gagnon. AEZS has traded publicly since 2000.

ROE -93%

Key Financial Metrics

Return on equity for Aeterna Zentaris Inc. stands at -92.6%, a gauge of how efficiently it converts shareholder capital into profit. Return on assets is -38.4%, showing how much profit it generates from its asset base. A current ratio of 5.57 indicates the company holds enough short-term assets to cover its near-term obligations. Its earnings yield is -115.6%, the inverse of the P/E and a quick read on earnings relative to price.

F-Score 1/9

Financial Health

Aeterna Zentaris Inc.'s Piotroski F-Score is 1/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny. Its Altman Z-Score of 0.26 places it in the distress zone, a signal of elevated financial risk.

AEZS Financials

Fundamental Snapshot

Return on Equity (TTM)
-92.6%
Current Ratio
5.6

Based on FMP financials and quantitative analysis

Bull Case vs Bear Case

Bull Case

  • Recent insider buying suggests confidence in the company's future prospects, a signal often followed by retail investors.
  • The community is buzzing about potential positive clinical trial results, creating a wave of optimism around AEZS.
  • Market perception seems to be shifting, with more analysts highlighting the potential of their pipeline.
  • There's growing speculation about a possible partnership or acquisition, fueling bullish sentiment.

Bear Case

  • Despite the hype, the company's past performance has made some traders cautious, remembering previous disappointments.
  • A significant portion of the community remains skeptical, citing concerns about the company's cash burn rate.
  • The market is highly competitive, and AEZS faces challenges in gaining market share against larger players.
  • There's a lingering worry about potential regulatory hurdles that could delay or derail their drug approval process.

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

Recent Quarterly Results

Quarter Revenue Net Income EPS
Q2 2024 $2M -$1M -$0.64
Q1 2024 $3,982 -$1M -$4.74

Based on FMP financials and quantitative analysis

AEZS Latest News

No recent news available for AEZS.

Leadership: Gilles R. Gagnon

Chief Executive Officer

Gilles R. Gagnon serves as the Chief Executive Officer of Aeterna Zentaris Inc., leading a team of 12 employees. His career has been dedicated to the pharmaceutical and biotechnology sectors, where he has accumulated extensive experience in corporate strategy, business development, and operational management. While specific educational background details are not provided, his leadership role in a specialty biopharmaceutical company implies a strong foundation in the scientific, commercial, and regulatory aspects of the industry. His expertise is crucial in navigating the complex landscape of drug development, from preclinical stages through commercialization, and in forging strategic partnerships essential for pipeline expansion.

Track Record: Under Mr. Gagnon's leadership, Aeterna Zentaris has maintained its focus on developing and commercializing therapeutics and diagnostic tests. Key achievements include the continued commercialization of Macrilen (macimorelin) and the strategic expansion of the company's pipeline through multiple licensing agreements. These agreements, covering diverse areas such as a potential COVID-19 vaccine, neuromyelitis optica spectrum disorder, and Parkinson's disease, reflect a proactive approach to diversifying the company's future growth prospects and leveraging external innovation.

What Investors Ask About Aeterna Zentaris Inc. (AEZS) — Healthcare

What happened to Aeterna Zentaris Inc. (AEZS) stock?

Aeterna Zentaris Inc. (AEZS) no longer trades on public markets. It was delisted in August 2024. The figures below are historical and are not a current quote.

Can I still buy AEZS shares?

No. AEZS stopped trading on public markets in August 2024, so the shares are not available through a broker. Anything you see quoted for AEZS 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 AEZS 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 Aeterna Zentaris 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 Aeterna Zentaris Inc. do?

Aeterna Zentaris Inc. is a specialty biopharmaceutical company engaged in the development and commercialization of therapeutics and diagnostic tests. Its primary commercial product is Macrilen (macimorelin), an orally available diagnostic for adult and childhood-onset growth hormone deficiency. Beyond Macrilen, the company strategically expands its pipeline through various licensing agreements.

What revenue streams does Aeterna Zentaris Inc. have in healthcare?

Aeterna Zentaris Inc.'s primary current revenue stream in healthcare is derived from the commercialization of Macrilen (macimorelin). Macrilen is an orally available diagnostic test for adult and childhood-onset growth hormone deficiency, sold under license agreements in territories like the United States and Canada. Beyond direct product sales, the company's business model also incorporates potential future revenue from licensing agreements.

What is Aeterna Zentaris Inc.'s strategy for developing and commercializing its pipeline products?

Aeterna Zentaris Inc. employs a dual strategy for its pipeline: leveraging its existing commercialized product and expanding through strategic partnerships. For Macrilen, the strategy involves continued commercialization and potential expansion into new indications like oncology, often through collaborations with established pharmaceutical companies for broader market reach.

What are the main risks for AEZS?

Aeterna Zentaris Inc. faces several significant risks inherent to the biotechnology sector. Financially, the company operates with a substantial negative profit margin of -92.1%, indicating ongoing unprofitability and a reliance on external funding.

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
  • No FMP PEER TICKERS were provided in the source data, therefore the 'competitors' array is empty.
  • Specific financial projections, analyst ratings, and patent expiration details were not provided in the source data.
Data Sources

Popular Stocks

More Stocks We Cover