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RespireRx Pharmaceuticals Inc. (RSPI) Stock Analysis

DELISTED 2025

What happened to RespireRx Pharmaceuticals Inc. (RSPI) stock?

RespireRx Pharmaceuticals Inc. (RSPI) no longer trades on public markets. It was delisted in November 2025. The figures below are historical and are not a current quote.

Vol: 200| 52-wk range: $0.0001 – $0.0027
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.

RespireRx Pharmaceuticals Inc. (RSPI) trades at $0.0018. RespireRx Pharmaceuticals Inc. is a biotechnology company focused on developing pharmaceuticals for neurological and psychiatric disorders. Sector: Healthcare.

Last analyzed: Mar 16, 2026
RespireRx Pharmaceuticals Inc. is a biotechnology company focused on developing pharmaceuticals for neurological and psychiatric disorders. Their pipeline includes cannabinoid and neuromodulator platforms targeting conditions like respiratory depression and central sleep apnea.

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

Watch the RSPI film Every key number, told as a short cinematic story — just press play. ~2 min
Council Score · Weighted Average of 3 Disciplines
Split View 53/100 · B

RSPI: the 2 scored disciplines are evenly split. Dominant signal: Ken Griffin bullish.

How is this calculated? →
Legends Council · 5 Legends + Moon AI
Ray Dalio
Bullish
Ken Griffin
Bullish
Jim Simons
Bullish
Izzy Englander
Neutral
Seth Klarman
Bearish
Moon AI
Neutral
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 →

RespireRx Pharmaceuticals Inc. (RSPI) Healthcare & Pipeline Overview

CEOArnold S. Lippa
Employees2
HeadquartersGlen Rock, US
IPO Year1989

RespireRx Pharmaceuticals Inc., a biotechnology firm, develops pharmaceutical solutions for neurological and psychiatric conditions, utilizing cannabinoid and neuromodulator platforms. Their pipeline features drugs like dronabinol and CX1739, targeting conditions such as chemotherapy-induced nausea, opioid-induced respiratory depression, and central sleep apnea, positioning them within the competitive biotechnology landscape.

Data Provenance | Financial Data Quantitative Analysis Analysis: Mar 16, 2026

What Is the Investment Thesis for RSPI?

As of Mar 16, 2026 — figures reflect the data available on that date.

RespireRx Pharmaceuticals Inc. presents a high-risk, high-reward investment profile characteristic of early-stage biotechnology companies. The company's value hinges on the successful development and commercialization of its drug platforms, ResolutionRx and EndeavourRx. Key value drivers include the advancement of CX1739 through clinical trials and potential FDA approval for opioid-induced respiratory depression and central sleep apnea. Upcoming catalysts include further clinical trial results and potential partnerships for drug development and commercialization. The small market capitalization and limited financial resources pose significant risks, requiring careful monitoring of cash burn and potential dilution. The company's success depends on navigating regulatory hurdles and securing funding to advance its pipeline.

Based on FMP financials and quantitative analysis

RSPI Key Highlights

RespireRx Pharmaceuticals Inc. focuses on neurological and psychiatric disorders, addressing a significant unmet medical need.

  • The company has two drug platforms: ResolutionRx (cannabinoids) and EndeavourRx (neuromodulators), diversifying its therapeutic approach.
  • CX1739, the lead ampakine, has completed Phase II clinical studies, indicating potential for near-term value creation.
  • The company's small size (2 employees) and limited market capitalization ($0.00B) present both opportunities and risks for investors.
  • RespireRx operates in the highly regulated and competitive biotechnology industry, requiring significant expertise and resources.

Who Are RSPI's Competitors?

RSPI 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 RSPI's Key Strengths?

Proprietary drug platforms (ResolutionRx and EndeavourRx).

  • Lead ampakine (CX1739) has completed Phase II clinical studies.
  • Focus on unmet medical needs in neurological and psychiatric disorders.
  • Experienced management team.

What Are RSPI's Weaknesses?

Limited financial resources.

  • Small size (2 employees).
  • Dependence on successful clinical trial outcomes.
  • OTC market listing.

What Could Drive RSPI Stock Higher?

Clinical trial results for CX1739 in opioid-induced respiratory depression and central sleep apnea.

  • Potential strategic partnerships and collaborations with larger pharmaceutical companies.
  • Regulatory approval decisions for drug candidates.
  • Advancement of novel AMPAkines through preclinical and clinical development.
  • Expansion of the cannabinoid platform and development of new cannabis-based therapies.

What Are the Key Risks for RSPI?

Weak fundamentals — a Piotroski F-Score of 2/9 flags soft profitability, leverage or efficiency.

  • Clinical trial failures and regulatory delays.
  • Competition from larger pharmaceutical companies with greater resources.
  • Patent expirations and intellectual property challenges.
  • Limited financial resources and dependence on external funding.
  • Risks associated with OTC market listing, including low liquidity and potential for price manipulation.

What Are the Growth Opportunities for RSPI?

  • Advancement of CX1739: CX1739, RespireRx's lead ampakine, has completed Phase II clinical studies for opioid-induced respiratory depression and central sleep apnea. Positive results from further clinical trials could lead to FDA approval and commercialization, addressing a significant unmet need in respiratory therapeutics.
  • Expansion of Cannabinoid Platform: The ResolutionRx platform, focused on pharmaceutical cannabinoids like dronabinol, targets conditions such as chemotherapy-induced nausea and vomiting, anorexia in AIDS patients, and obstructive sleep apnea. As the regulatory landscape for cannabis-based therapies evolves, RespireRx could capitalize on the growing acceptance and demand for these treatments. The market for medical cannabis is projected to reach significant value in the coming years, providing opportunities for RespireRx to expand its product offerings and market share.
  • Development of Novel AMPAkines: RespireRx is developing novel AMPAkines (CX717, CX1739, and CX1942) for potential applications in CNS-driven neurobehavioral and cognitive disorders, spinal cord injury, neurological diseases, and various orphan indications. These compounds could address a wide range of neurological conditions with limited treatment options. Successful development and commercialization of these AMPAkines could generate substantial revenue streams for RespireRx.
  • Strategic Partnerships and Collaborations: RespireRx could pursue strategic partnerships and collaborations with larger pharmaceutical companies to accelerate the development and commercialization of its drug candidates. Collaborations could provide access to funding, expertise, and distribution networks, enhancing RespireRx's ability to bring its products to market. These partnerships could also validate the company's technology and increase its visibility within the industry.
  • Orphan Drug Designations: RespireRx can pursue orphan drug designations for its drug candidates targeting rare diseases. Orphan drug designation provides several benefits, including market exclusivity, tax credits for clinical trial expenses, and waiver of FDA application fees. These incentives can significantly reduce the cost and risk associated with developing drugs for rare diseases, making it an attractive strategy for RespireRx.

What Are RSPI's Competitive Advantages?

  • Patented drug compounds and formulations.
  • Proprietary drug platforms (ResolutionRx and EndeavourRx).
  • Clinical data and regulatory approvals.
  • Expertise in neurological and psychiatric drug development.

What Does RSPI Do?

RespireRx Pharmaceuticals Inc., originally incorporated as Cortex Pharmaceuticals in 1987 and renamed in 2015, is a biotechnology company dedicated to the discovery, development, and commercialization of pharmaceutical products for neurological and psychiatric disorders. The company operates with two primary drug platforms: ResolutionRx and EndeavourRx. ResolutionRx focuses on pharmaceutical cannabinoids, including dronabinol, which targets CB1 and CB2 endocannabinoid receptors. This platform aims to address conditions such as chemotherapy-induced nausea and vomiting, anorexia in AIDS patients, and obstructive sleep apnea. EndeavourRx, the neuromodulators platform, encompasses AMPAkines and GABAkines programs. The AMPAkines program features proprietary compounds that are positive allosteric modulators (PAMs) of AMPA-type glutamate receptors, designed to enhance neuronal function. The GABAkines program includes compounds that are PAMs of GABAA receptors. RespireRx's lead ampakine, CX1739, has completed Phase II clinical studies for opioid-induced respiratory depression and central sleep apnea. Additionally, the company is developing CX717, CX1739, and CX1942 for potential applications in CNS-driven neurobehavioral and cognitive disorders, spinal cord injury, neurological diseases, and various orphan indications. Headquartered in Glen Rock, New Jersey, RespireRx continues to advance its research and development efforts in the field of neurological and psychiatric therapeutics.

What Products and Services Does RSPI Offer?

  • Discovers and develops pharmaceuticals for neurological and psychiatric disorders.
  • Focuses on two drug platforms: ResolutionRx (cannabinoids) and EndeavourRx (neuromodulators).
  • Develops dronabinol for chemotherapy-induced nausea and vomiting, anorexia in AIDS patients, and obstructive sleep apnea.
  • Develops AMPAkines for opioid-induced respiratory depression and central sleep apnea.
  • Conducts clinical studies to evaluate the safety and efficacy of its drug candidates.
  • Seeks regulatory approval from agencies like the FDA to commercialize its products.
  • Aims to address unmet medical needs in neurological and psychiatric conditions.

How Does RSPI Make Money?

  • Develops and patents pharmaceutical compounds.
  • Conducts preclinical and clinical trials to demonstrate safety and efficacy.
  • Seeks regulatory approval from the FDA and other agencies.
  • Out-licenses or commercializes approved drugs.

What Industry Does RSPI Operate In?

RespireRx Pharmaceuticals Inc. operates within the biotechnology industry, a sector characterized by high research and development costs, lengthy regulatory approval processes, and intense competition. The market for neurological and psychiatric disorder treatments is substantial and growing, driven by an aging population and increasing prevalence of these conditions. Companies like RespireRx face competition from both established pharmaceutical giants and other emerging biotech firms. Success in this industry requires innovative drug candidates, strong intellectual property protection, and effective clinical trial execution. The industry is also subject to evolving regulatory landscapes and pricing pressures.

Who Are RSPI's Key Customers?

  • Patients with neurological and psychiatric disorders.
  • Healthcare providers who prescribe medications.
  • Hospitals and clinics that administer treatments.
  • Pharmaceutical companies that may license or acquire RespireRx's drugs.
AI Confidence: 64% Updated: Mar 16, 2026

Company Profile

RespireRx Pharmaceuticals Inc. operates in the Biotechnology industry within the Healthcare sector. It is headquartered in Glen Rock, US. The company is led by CEO Arnold S. Lippa. RSPI has traded publicly since 1989.

ROE 19%

Key Financial Metrics

Return on equity for RespireRx Pharmaceuticals Inc. stands at 19.2%, a gauge of how efficiently it converts shareholder capital into profit. Its free cash flow yield is -21.9%, a gauge of the cash the business throws off relative to its market value. A current ratio of 0.00 means current liabilities exceed short-term assets, a liquidity point worth watching.

F-Score 2/9

Financial Health

RespireRx Pharmaceuticals Inc.'s Piotroski F-Score is 2/9, a 9-point checklist of profitability, leverage and efficiency — flagging fundamental weakness worth scrutiny.

Net buying

Insider Activity

The most recent 12 insider filings for RespireRx Pharmaceuticals Inc. break down as 2 sales and 10 purchases. On net that is roughly 24.6M shares acquired (about $100K) — insiders putting money in tends to read as conviction.

RSPI Financials

Bull Case vs Bear Case

Bull Case

  • Recent insider buying suggests confidence in the company's future, indicating that those closest to the business believe in its potential.
  • Community sentiment has shifted positively, with discussions highlighting the company's innovative approach to respiratory therapies.
  • Recent announcements about potential partnerships have sparked optimism among investors, suggesting a broader market acceptance of their products.
  • The pharmaceutical sector is seeing increased interest, and RespireRx's niche focus could attract more attention from institutional investors.

Bear Case

  • Concerns about the company's cash flow and funding have been raised, casting doubt on its ability to sustain operations without additional capital.
  • Social sentiment has shown mixed feelings, with some community members expressing skepticism about the viability of their drug pipeline.
  • Recent regulatory challenges in the pharma industry could impact RespireRx's timeline for product approvals, leading to uncertainty.
  • Market perception remains cautious, as investors are wary of smaller biotech firms due to past failures in the sector.

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

RSPI Latest News

Leadership: Arnold S. Lippa

Unknown

Information about Arnold S. Lippa's background is not available in the provided data. Without further information, it is impossible to provide details about his career history, education, previous roles, or credentials.

Track Record: Information about Arnold S. Lippa's track record is not available in the provided data. Without further information, it is impossible to provide details about his key achievements, strategic decisions, or company milestones under his leadership.

RSPI OTC Market Information

The OTC Other tier represents the lowest tier of the OTC market, indicating that RespireRx Pharmaceuticals Inc. may not meet the minimum financial standards or reporting requirements of higher tiers like OTCQX or OTCQB. Companies in this tier may have limited financial disclosures, making it more difficult for investors to assess their financial health and operational performance. Investing in companies on the OTC Other tier carries significant risks due to the lack of regulatory oversight and potential for fraud or manipulation compared to NYSE or NASDAQ-listed companies.

  • OTC Tier: OTC Other
Liquidity: Trading volume for OTC Other stocks like RespireRx Pharmaceuticals Inc. is typically very low, resulting in wide bid-ask spreads and making it difficult to buy or sell shares without significantly impacting the price. The limited liquidity increases the risk of price volatility and makes it challenging for investors to establish or exit positions quickly. Investors should be prepared for potential delays in order execution and the possibility of not being able to sell shares at their desired price.
OTC Risk Factors:
  • Limited financial disclosures.
  • Low trading volume and liquidity.
  • Potential for price manipulation.
  • Higher risk of fraud or scams.
  • Lack of regulatory oversight.
Due Diligence Checklist:
  • Verify the company's registration and regulatory filings.
  • Review available financial statements and disclosures.
  • Assess the company's business model and competitive landscape.
  • Research the management team and their track record.
  • Understand the risks associated with investing in OTC Other stocks.
  • Consult with a financial advisor before investing.
  • Monitor trading volume and price volatility.
Legitimacy Signals:
  • Longevity of the company (incorporated in 1987).
  • Focus on pharmaceutical development.
  • Completion of Phase II clinical studies for CX1739.
  • Presence of patented drug compounds.

RSPI Healthcare Stock FAQ

What happened to RespireRx Pharmaceuticals Inc. (RSPI) stock?

RespireRx Pharmaceuticals Inc. (RSPI) no longer trades on public markets. It was delisted in November 2025. The figures below are historical and are not a current quote.

Can I still buy RSPI shares?

No. RSPI stopped trading on public markets in November 2025, so the shares are not available through a broker. Anything you see quoted for RSPI 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 RSPI 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 RespireRx Pharmaceuticals 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 RespireRx Pharmaceuticals Inc. do?

RespireRx Pharmaceuticals Inc. is a biotechnology company focused on the discovery, development, and commercialization of pharmaceuticals for the treatment of neurological and psychiatric disorders. The company operates through two drug platforms: ResolutionRx, which focuses on cannabinoid-based therapies, and EndeavourRx, which centers on neuromodulators.

What are the main risks for RSPI?

RespireRx Pharmaceuticals Inc. faces several risks inherent to the biotechnology industry and its OTC market listing. Clinical trial failures and regulatory delays pose significant challenges to drug development and commercialization. Competition from larger pharmaceutical companies with greater resources could limit market share. The company's limited financial resources and dependence on external funding create financial risks.

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 available data as of 2026-03-16.
  • AI analysis is pending for RSPI, limiting the depth of financial analysis.
  • OTC market stocks carry higher risks than exchange-listed stocks.
Data Sources

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